# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID ad5b833122a8d88be39629751e1ee5c1d8629f96
# Parent 44e5abbf333b8d393423d99f89d2191dba022659
Linux: upgrade patches to 2.6.16.13.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
---
patches/linux-2.6.16/device_bind.patch |
13
patches/linux-2.6.16/i386-mach-io-check-nmi.patch |
35
patches/linux-2.6.16/net-csum.patch |
58 -
patches/linux-2.6.16/pmd-shared.patch |
100 -
patches/linux-2.6.16/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch |
27
patches/linux-2.6.16/smp-alts.patch |
540 ----------
patches/linux-2.6.16/x86-increase-interrupt-vector-range.patch |
90 -
patches/linux-2.6.16/xenoprof-generic.patch |
345 ------
patches/linux-2.6.16.13/device_bind.patch |
9
patches/linux-2.6.16.13/i386-mach-io-check-nmi.patch |
30
patches/linux-2.6.16.13/net-csum.patch |
43
patches/linux-2.6.16.13/pmd-shared.patch |
57 +
patches/linux-2.6.16.13/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch |
26
patches/linux-2.6.16.13/smp-alts.patch |
330 ++++++
patches/linux-2.6.16.13/x86-increase-interrupt-vector-range.patch |
73 +
patches/linux-2.6.16.13/xenoprof-generic.patch |
230 ++++
16 files changed, 798 insertions(+), 1208 deletions(-)
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16.13/device_bind.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/device_bind.patch Thu May 04 17:44:14 2006 +0100
@@ -0,0 +1,15 @@
+diff -pruN ../pristine-linux-2.6.16.13/drivers/base/bus.c ./drivers/base/bus.c
+--- ../pristine-linux-2.6.16.13/drivers/base/bus.c 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/base/bus.c 2006-05-04 17:41:30.000000000 +0100
+@@ -188,6 +188,11 @@ static ssize_t driver_bind(struct device
+ up(&dev->sem);
+ if (dev->parent)
+ up(&dev->parent->sem);
++
++ if (err > 0) /* success */
++ err = count;
++ else if (err == 0) /* driver didn't accept device */
++ err = -ENODEV;
+ }
+ put_device(dev);
+ put_bus(bus);
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16.13/i386-mach-io-check-nmi.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/i386-mach-io-check-nmi.patch Thu May 04
17:44:14 2006 +0100
@@ -0,0 +1,45 @@
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/traps.c
./arch/i386/kernel/traps.c
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/traps.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/traps.c 2006-05-04 17:41:34.000000000 +0100
+@@ -567,18 +567,11 @@ static void mem_parity_error(unsigned ch
+
+ static void io_check_error(unsigned char reason, struct pt_regs * regs)
+ {
+- unsigned long i;
+-
+ printk(KERN_EMERG "NMI: IOCK error (debug interrupt?)\n");
+ show_registers(regs);
+
+ /* Re-enable the IOCK line, wait for a few seconds */
+- reason = (reason & 0xf) | 8;
+- outb(reason, 0x61);
+- i = 2000;
+- while (--i) udelay(1000);
+- reason &= ~8;
+- outb(reason, 0x61);
++ clear_io_check_error(reason);
+ }
+
+ static void unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
+diff -pruN
../pristine-linux-2.6.16.13/include/asm-i386/mach-default/mach_traps.h
./include/asm-i386/mach-default/mach_traps.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/mach-default/mach_traps.h
2006-05-02 22:38:44.000000000 +0100
++++ ./include/asm-i386/mach-default/mach_traps.h 2006-05-04
17:41:34.000000000 +0100
+@@ -15,6 +15,18 @@ static inline void clear_mem_error(unsig
+ outb(reason, 0x61);
+ }
+
++static inline void clear_io_check_error(unsigned char reason)
++{
++ unsigned long i;
++
++ reason = (reason & 0xf) | 8;
++ outb(reason, 0x61);
++ i = 2000;
++ while (--i) udelay(1000);
++ reason &= ~8;
++ outb(reason, 0x61);
++}
++
+ static inline unsigned char get_nmi_reason(void)
+ {
+ return inb(0x61);
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16.13/net-csum.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/net-csum.patch Thu May 04 17:44:14 2006 +0100
@@ -0,0 +1,64 @@
+diff -pruN ../pristine-linux-2.6.16.13/net/ipv4/netfilter/ip_nat_proto_tcp.c
./net/ipv4/netfilter/ip_nat_proto_tcp.c
+--- ../pristine-linux-2.6.16.13/net/ipv4/netfilter/ip_nat_proto_tcp.c
2006-05-02 22:38:44.000000000 +0100
++++ ./net/ipv4/netfilter/ip_nat_proto_tcp.c 2006-05-04 17:41:37.000000000
+0100
+@@ -129,10 +129,14 @@ tcp_manip_pkt(struct sk_buff **pskb,
+ if (hdrsize < sizeof(*hdr))
+ return 1;
+
+- hdr->check = ip_nat_cheat_check(~oldip, newip,
++ if ((*pskb)->proto_csum_blank) {
++ hdr->check = ip_nat_cheat_check(oldip, ~newip, hdr->check);
++ } else {
++ hdr->check = ip_nat_cheat_check(~oldip, newip,
+ ip_nat_cheat_check(oldport ^ 0xFFFF,
+ newport,
+ hdr->check));
++ }
+ return 1;
+ }
+
+diff -pruN ../pristine-linux-2.6.16.13/net/ipv4/netfilter/ip_nat_proto_udp.c
./net/ipv4/netfilter/ip_nat_proto_udp.c
+--- ../pristine-linux-2.6.16.13/net/ipv4/netfilter/ip_nat_proto_udp.c
2006-05-02 22:38:44.000000000 +0100
++++ ./net/ipv4/netfilter/ip_nat_proto_udp.c 2006-05-04 17:41:37.000000000
+0100
+@@ -113,11 +113,16 @@ udp_manip_pkt(struct sk_buff **pskb,
+ newport = tuple->dst.u.udp.port;
+ portptr = &hdr->dest;
+ }
+- if (hdr->check) /* 0 is a special case meaning no checksum */
+- hdr->check = ip_nat_cheat_check(~oldip, newip,
++ if (hdr->check) { /* 0 is a special case meaning no checksum */
++ if ((*pskb)->proto_csum_blank) {
++ hdr->check = ip_nat_cheat_check(oldip, ~newip,
hdr->check);
++ } else {
++ hdr->check = ip_nat_cheat_check(~oldip, newip,
+ ip_nat_cheat_check(*portptr ^ 0xFFFF,
+ newport,
+ hdr->check));
++ }
++ }
+ *portptr = newport;
+ return 1;
+ }
+diff -pruN ../pristine-linux-2.6.16.13/net/ipv4/xfrm4_output.c
./net/ipv4/xfrm4_output.c
+--- ../pristine-linux-2.6.16.13/net/ipv4/xfrm4_output.c 2006-05-02
22:38:44.000000000 +0100
++++ ./net/ipv4/xfrm4_output.c 2006-05-04 17:41:37.000000000 +0100
+@@ -17,6 +17,8 @@
+ #include <net/xfrm.h>
+ #include <net/icmp.h>
+
++extern int skb_checksum_setup(struct sk_buff *skb);
++
+ /* Add encapsulation header.
+ *
+ * In transport mode, the IP header will be moved forward to make space
+@@ -103,6 +105,10 @@ static int xfrm4_output_one(struct sk_bu
+ struct xfrm_state *x = dst->xfrm;
+ int err;
+
++ err = skb_checksum_setup(skb);
++ if (err)
++ goto error_nolock;
++
+ if (skb->ip_summed == CHECKSUM_HW) {
+ err = skb_checksum_help(skb, 0);
+ if (err)
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16.13/pmd-shared.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/pmd-shared.patch Thu May 04 17:44:14 2006 +0100
@@ -0,0 +1,111 @@
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/mm/pageattr.c
./arch/i386/mm/pageattr.c
+--- ../pristine-linux-2.6.16.13/arch/i386/mm/pageattr.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/mm/pageattr.c 2006-05-04 17:41:40.000000000 +0100
+@@ -78,7 +78,7 @@ static void set_pmd_pte(pte_t *kpte, uns
+ unsigned long flags;
+
+ set_pte_atomic(kpte, pte); /* change init_mm */
+- if (PTRS_PER_PMD > 1)
++ if (HAVE_SHARED_KERNEL_PMD)
+ return;
+
+ spin_lock_irqsave(&pgd_lock, flags);
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/mm/pgtable.c
./arch/i386/mm/pgtable.c
+--- ../pristine-linux-2.6.16.13/arch/i386/mm/pgtable.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/mm/pgtable.c 2006-05-04 17:41:40.000000000 +0100
+@@ -215,9 +215,10 @@ void pgd_ctor(void *pgd, kmem_cache_t *c
+ spin_lock_irqsave(&pgd_lock, flags);
+ }
+
+- clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
+- swapper_pg_dir + USER_PTRS_PER_PGD,
+- KERNEL_PGD_PTRS);
++ if (PTRS_PER_PMD == 1 || HAVE_SHARED_KERNEL_PMD)
++ clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
++ swapper_pg_dir + USER_PTRS_PER_PGD,
++ KERNEL_PGD_PTRS);
+ if (PTRS_PER_PMD > 1)
+ return;
+
+@@ -249,6 +250,30 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
+ goto out_oom;
+ set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
+ }
++
++ if (!HAVE_SHARED_KERNEL_PMD) {
++ unsigned long flags;
++
++ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
++ pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
++ if (!pmd)
++ goto out_oom;
++ set_pgd(&pgd[USER_PTRS_PER_PGD], __pgd(1 + __pa(pmd)));
++ }
++
++ spin_lock_irqsave(&pgd_lock, flags);
++ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
++ unsigned long v = (unsigned long)i << PGDIR_SHIFT;
++ pgd_t *kpgd = pgd_offset_k(v);
++ pud_t *kpud = pud_offset(kpgd, v);
++ pmd_t *kpmd = pmd_offset(kpud, v);
++ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
++ memcpy(pmd, kpmd, PAGE_SIZE);
++ }
++ pgd_list_add(pgd);
++ spin_unlock_irqrestore(&pgd_lock, flags);
++ }
++
+ return pgd;
+
+ out_oom:
+@@ -263,9 +288,23 @@ void pgd_free(pgd_t *pgd)
+ int i;
+
+ /* in the PAE case user pgd entries are overwritten before usage */
+- if (PTRS_PER_PMD > 1)
+- for (i = 0; i < USER_PTRS_PER_PGD; ++i)
+- kmem_cache_free(pmd_cache, (void
*)__va(pgd_val(pgd[i])-1));
++ if (PTRS_PER_PMD > 1) {
++ for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
++ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
++ kmem_cache_free(pmd_cache, pmd);
++ }
++ if (!HAVE_SHARED_KERNEL_PMD) {
++ unsigned long flags;
++ spin_lock_irqsave(&pgd_lock, flags);
++ pgd_list_del(pgd);
++ spin_unlock_irqrestore(&pgd_lock, flags);
++ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
++ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
++ memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
++ kmem_cache_free(pmd_cache, pmd);
++ }
++ }
++ }
+ /* in the non-PAE case, free_pgtables() clears user pgd entries */
+ kmem_cache_free(pgd_cache, pgd);
+ }
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/pgtable-2level-defs.h
./include/asm-i386/pgtable-2level-defs.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/pgtable-2level-defs.h
2006-05-02 22:38:44.000000000 +0100
++++ ./include/asm-i386/pgtable-2level-defs.h 2006-05-04 17:41:40.000000000
+0100
+@@ -1,6 +1,8 @@
+ #ifndef _I386_PGTABLE_2LEVEL_DEFS_H
+ #define _I386_PGTABLE_2LEVEL_DEFS_H
+
++#define HAVE_SHARED_KERNEL_PMD 0
++
+ /*
+ * traditional i386 two-level paging structure:
+ */
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/pgtable-3level-defs.h
./include/asm-i386/pgtable-3level-defs.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/pgtable-3level-defs.h
2006-05-02 22:38:44.000000000 +0100
++++ ./include/asm-i386/pgtable-3level-defs.h 2006-05-04 17:41:40.000000000
+0100
+@@ -1,6 +1,8 @@
+ #ifndef _I386_PGTABLE_3LEVEL_DEFS_H
+ #define _I386_PGTABLE_3LEVEL_DEFS_H
+
++#define HAVE_SHARED_KERNEL_PMD 1
++
+ /*
+ * PGDIR_SHIFT determines what a top-level page table entry can map
+ */
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16.13/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++
b/patches/linux-2.6.16.13/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch
Thu May 04 17:44:14 2006 +0100
@@ -0,0 +1,30 @@
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/entry.S
./arch/i386/kernel/entry.S
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/entry.S 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/entry.S 2006-05-04 17:41:44.000000000 +0100
+@@ -177,7 +177,7 @@ need_resched:
+
+ # sysenter call handler stub
+ ENTRY(sysenter_entry)
+- movl TSS_sysenter_esp0(%esp),%esp
++ movl SYSENTER_stack_esp0(%esp),%esp
+ sysenter_past_esp:
+ sti
+ pushl $(__USER_DS)
+@@ -492,7 +492,7 @@ device_not_available_emulate:
+ * that sets up the real kernel stack. Check here, since we can't
+ * allow the wrong stack to be used.
+ *
+- * "TSS_sysenter_esp0+12" is because the NMI/debug handler will have
++ * "SYSENTER_stack_esp0+12" is because the NMI/debug handler will have
+ * already pushed 3 words if it hits on the sysenter instruction:
+ * eflags, cs and eip.
+ *
+@@ -504,7 +504,7 @@ device_not_available_emulate:
+ cmpw $__KERNEL_CS,4(%esp); \
+ jne ok; \
+ label: \
+- movl TSS_sysenter_esp0+offset(%esp),%esp; \
++ movl SYSENTER_stack_esp0+offset(%esp),%esp; \
+ pushfl; \
+ pushl $__KERNEL_CS; \
+ pushl $sysenter_past_esp
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16.13/smp-alts.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/smp-alts.patch Thu May 04 17:44:14 2006 +0100
@@ -0,0 +1,591 @@
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/Kconfig ./arch/i386/Kconfig
+--- ../pristine-linux-2.6.16.13/arch/i386/Kconfig 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/Kconfig 2006-05-04 17:41:45.000000000 +0100
+@@ -202,6 +202,19 @@ config SMP
+
+ If you don't know what to do here, say N.
+
++config SMP_ALTERNATIVES
++ bool "SMP alternatives support (EXPERIMENTAL)"
++ depends on SMP && EXPERIMENTAL
++ help
++ Try to reduce the overhead of running an SMP kernel on a uniprocessor
++ host slightly by replacing certain key instruction sequences
++ according to whether we currently have more than one CPU available.
++ This should provide a noticeable boost to performance when
++ running SMP kernels on UP machines, and have negligible impact
++ when running on an true SMP host.
++
++ If unsure, say N.
++
+ config NR_CPUS
+ int "Maximum number of CPUs (2-255)"
+ range 2 255
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/Makefile
./arch/i386/kernel/Makefile
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/Makefile 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/Makefile 2006-05-04 17:41:45.000000000 +0100
+@@ -37,6 +37,7 @@ obj-$(CONFIG_EFI) += efi.o efi_stub.o
+ obj-$(CONFIG_DOUBLEFAULT) += doublefault.o
+ obj-$(CONFIG_VM86) += vm86.o
+ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
++obj-$(CONFIG_SMP_ALTERNATIVES) += smpalts.o
+
+ EXTRA_AFLAGS := -traditional
+
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/smpalts.c
./arch/i386/kernel/smpalts.c
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/smpalts.c 1970-01-01
01:00:00.000000000 +0100
++++ ./arch/i386/kernel/smpalts.c 2006-05-04 17:41:45.000000000 +0100
+@@ -0,0 +1,85 @@
++#include <linux/kernel.h>
++#include <asm/system.h>
++#include <asm/smp_alt.h>
++#include <asm/processor.h>
++#include <asm/string.h>
++
++struct smp_replacement_record {
++ unsigned char targ_size;
++ unsigned char smp1_size;
++ unsigned char smp2_size;
++ unsigned char up_size;
++ unsigned char feature;
++ unsigned char data[0];
++};
++
++struct smp_alternative_record {
++ void *targ_start;
++ struct smp_replacement_record *repl;
++};
++
++extern struct smp_alternative_record __start_smp_alternatives_table,
++ __stop_smp_alternatives_table;
++extern unsigned long __init_begin, __init_end;
++
++void prepare_for_smp(void)
++{
++ struct smp_alternative_record *r;
++ printk(KERN_INFO "Enabling SMP...\n");
++ for (r = &__start_smp_alternatives_table;
++ r != &__stop_smp_alternatives_table;
++ r++) {
++ BUG_ON(r->repl->targ_size < r->repl->smp1_size);
++ BUG_ON(r->repl->targ_size < r->repl->smp2_size);
++ BUG_ON(r->repl->targ_size < r->repl->up_size);
++ if (system_state == SYSTEM_RUNNING &&
++ r->targ_start >= (void *)&__init_begin &&
++ r->targ_start < (void *)&__init_end)
++ continue;
++ if (r->repl->feature != (unsigned char)-1 &&
++ boot_cpu_has(r->repl->feature)) {
++ memcpy(r->targ_start,
++ r->repl->data + r->repl->smp1_size,
++ r->repl->smp2_size);
++ memset(r->targ_start + r->repl->smp2_size,
++ 0x90,
++ r->repl->targ_size - r->repl->smp2_size);
++ } else {
++ memcpy(r->targ_start,
++ r->repl->data,
++ r->repl->smp1_size);
++ memset(r->targ_start + r->repl->smp1_size,
++ 0x90,
++ r->repl->targ_size - r->repl->smp1_size);
++ }
++ }
++ /* Paranoia */
++ asm volatile ("jmp 1f\n1:");
++ mb();
++}
++
++void unprepare_for_smp(void)
++{
++ struct smp_alternative_record *r;
++ printk(KERN_INFO "Disabling SMP...\n");
++ for (r = &__start_smp_alternatives_table;
++ r != &__stop_smp_alternatives_table;
++ r++) {
++ BUG_ON(r->repl->targ_size < r->repl->smp1_size);
++ BUG_ON(r->repl->targ_size < r->repl->smp2_size);
++ BUG_ON(r->repl->targ_size < r->repl->up_size);
++ if (system_state == SYSTEM_RUNNING &&
++ r->targ_start >= (void *)&__init_begin &&
++ r->targ_start < (void *)&__init_end)
++ continue;
++ memcpy(r->targ_start,
++ r->repl->data + r->repl->smp1_size + r->repl->smp2_size,
++ r->repl->up_size);
++ memset(r->targ_start + r->repl->up_size,
++ 0x90,
++ r->repl->targ_size - r->repl->up_size);
++ }
++ /* Paranoia */
++ asm volatile ("jmp 1f\n1:");
++ mb();
++}
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/smpboot.c
./arch/i386/kernel/smpboot.c
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/smpboot.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/smpboot.c 2006-05-04 17:41:45.000000000 +0100
+@@ -1218,6 +1218,11 @@ static void __init smp_boot_cpus(unsigne
+ if (max_cpus <= cpucount+1)
+ continue;
+
++#ifdef CONFIG_SMP_ALTERNATIVES
++ if (kicked == 1)
++ prepare_for_smp();
++#endif
++
+ if (((cpu = alloc_cpu_id()) <= 0) || do_boot_cpu(apicid, cpu))
+ printk("CPU #%d not responding - cannot use it.\n",
+ apicid);
+@@ -1396,6 +1401,11 @@ int __devinit __cpu_up(unsigned int cpu)
+ return -EIO;
+ }
+
++#ifdef CONFIG_SMP_ALTERNATIVES
++ if (num_online_cpus() == 1)
++ prepare_for_smp();
++#endif
++
+ local_irq_enable();
+ per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
+ /* Unleash the CPU! */
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/vmlinux.lds.S
./arch/i386/kernel/vmlinux.lds.S
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/vmlinux.lds.S 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/vmlinux.lds.S 2006-05-04 17:41:45.000000000 +0100
+@@ -34,6 +34,13 @@ SECTIONS
+ __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
+ __stop___ex_table = .;
+
++ . = ALIGN(16);
++ __start_smp_alternatives_table = .;
++ __smp_alternatives : { *(__smp_alternatives) }
++ __stop_smp_alternatives_table = .;
++
++ __smp_replacements : { *(__smp_replacements) }
++
+ RODATA
+
+ /* writeable */
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/atomic.h
./include/asm-i386/atomic.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/atomic.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/atomic.h 2006-05-04 17:41:45.000000000 +0100
+@@ -4,18 +4,13 @@
+ #include <linux/config.h>
+ #include <linux/compiler.h>
+ #include <asm/processor.h>
++#include <asm/smp_alt.h>
+
+ /*
+ * Atomic operations that C can't guarantee us. Useful for
+ * resource counting etc..
+ */
+
+-#ifdef CONFIG_SMP
+-#define LOCK "lock ; "
+-#else
+-#define LOCK ""
+-#endif
+-
+ /*
+ * Make sure gcc doesn't try to be clever and move things around
+ * on us. We need to use _exactly_ the address the user gave us,
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/bitops.h
./include/asm-i386/bitops.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/bitops.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/bitops.h 2006-05-04 17:41:45.000000000 +0100
+@@ -7,6 +7,7 @@
+
+ #include <linux/config.h>
+ #include <linux/compiler.h>
++#include <asm/smp_alt.h>
+
+ /*
+ * These have to be done with inline assembly: that way the bit-setting
+@@ -16,12 +17,6 @@
+ * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
+ */
+
+-#ifdef CONFIG_SMP
+-#define LOCK_PREFIX "lock ; "
+-#else
+-#define LOCK_PREFIX ""
+-#endif
+-
+ #define ADDR (*(volatile long *) addr)
+
+ /**
+@@ -41,7 +36,7 @@
+ */
+ static inline void set_bit(int nr, volatile unsigned long * addr)
+ {
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btsl %1,%0"
+ :"+m" (ADDR)
+ :"Ir" (nr));
+@@ -76,7 +71,7 @@ static inline void __set_bit(int nr, vol
+ */
+ static inline void clear_bit(int nr, volatile unsigned long * addr)
+ {
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btrl %1,%0"
+ :"+m" (ADDR)
+ :"Ir" (nr));
+@@ -121,7 +116,7 @@ static inline void __change_bit(int nr,
+ */
+ static inline void change_bit(int nr, volatile unsigned long * addr)
+ {
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btcl %1,%0"
+ :"+m" (ADDR)
+ :"Ir" (nr));
+@@ -140,7 +135,7 @@ static inline int test_and_set_bit(int n
+ {
+ int oldbit;
+
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btsl %2,%1\n\tsbbl %0,%0"
+ :"=r" (oldbit),"+m" (ADDR)
+ :"Ir" (nr) : "memory");
+@@ -180,7 +175,7 @@ static inline int test_and_clear_bit(int
+ {
+ int oldbit;
+
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btrl %2,%1\n\tsbbl %0,%0"
+ :"=r" (oldbit),"+m" (ADDR)
+ :"Ir" (nr) : "memory");
+@@ -231,7 +226,7 @@ static inline int test_and_change_bit(in
+ {
+ int oldbit;
+
+- __asm__ __volatile__( LOCK_PREFIX
++ __asm__ __volatile__( LOCK
+ "btcl %2,%1\n\tsbbl %0,%0"
+ :"=r" (oldbit),"+m" (ADDR)
+ :"Ir" (nr) : "memory");
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/futex.h
./include/asm-i386/futex.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/futex.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/futex.h 2006-05-04 17:41:45.000000000 +0100
+@@ -28,7 +28,7 @@
+ "1: movl %2, %0\n\
+ movl %0, %3\n" \
+ insn "\n" \
+-"2: " LOCK_PREFIX "cmpxchgl %3, %2\n\
++"2: " LOCK "cmpxchgl %3, %2\n\
+ jnz 1b\n\
+ 3: .section .fixup,\"ax\"\n\
+ 4: mov %5, %1\n\
+@@ -68,7 +68,7 @@ futex_atomic_op_inuser (int encoded_op,
+ #endif
+ switch (op) {
+ case FUTEX_OP_ADD:
+- __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret,
++ __futex_atomic_op1(LOCK "xaddl %0, %2", ret,
+ oldval, uaddr, oparg);
+ break;
+ case FUTEX_OP_OR:
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/rwsem.h
./include/asm-i386/rwsem.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/rwsem.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/rwsem.h 2006-05-04 17:41:45.000000000 +0100
+@@ -40,6 +40,7 @@
+
+ #include <linux/list.h>
+ #include <linux/spinlock.h>
++#include <asm/smp_alt.h>
+
+ struct rwsem_waiter;
+
+@@ -99,7 +100,7 @@ static inline void __down_read(struct rw
+ {
+ __asm__ __volatile__(
+ "# beginning down_read\n\t"
+-LOCK_PREFIX " incl (%%eax)\n\t" /* adds 0x00000001, returns the old
value */
++LOCK " incl (%%eax)\n\t" /* adds 0x00000001, returns the old
value */
+ " js 2f\n\t" /* jump if we weren't granted the lock */
+ "1:\n\t"
+ LOCK_SECTION_START("")
+@@ -130,7 +131,7 @@ static inline int __down_read_trylock(st
+ " movl %1,%2\n\t"
+ " addl %3,%2\n\t"
+ " jle 2f\n\t"
+-LOCK_PREFIX " cmpxchgl %2,%0\n\t"
++LOCK " cmpxchgl %2,%0\n\t"
+ " jnz 1b\n\t"
+ "2:\n\t"
+ "# ending __down_read_trylock\n\t"
+@@ -150,7 +151,7 @@ static inline void __down_write(struct r
+ tmp = RWSEM_ACTIVE_WRITE_BIAS;
+ __asm__ __volatile__(
+ "# beginning down_write\n\t"
+-LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtract 0x0000ffff, returns
the old value */
++LOCK " xadd %%edx,(%%eax)\n\t" /* subtract 0x0000ffff, returns
the old value */
+ " testl %%edx,%%edx\n\t" /* was the count 0 before? */
+ " jnz 2f\n\t" /* jump if we weren't granted the lock */
+ "1:\n\t"
+@@ -188,7 +189,7 @@ static inline void __up_read(struct rw_s
+ __s32 tmp = -RWSEM_ACTIVE_READ_BIAS;
+ __asm__ __volatile__(
+ "# beginning __up_read\n\t"
+-LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns the old
value */
++LOCK " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns the old
value */
+ " js 2f\n\t" /* jump if the lock is being waited upon */
+ "1:\n\t"
+ LOCK_SECTION_START("")
+@@ -214,7 +215,7 @@ static inline void __up_write(struct rw_
+ __asm__ __volatile__(
+ "# beginning __up_write\n\t"
+ " movl %2,%%edx\n\t"
+-LOCK_PREFIX " xaddl %%edx,(%%eax)\n\t" /* tries to transition
0xffff0001 -> 0x00000000 */
++LOCK " xaddl %%edx,(%%eax)\n\t" /* tries to transition
0xffff0001 -> 0x00000000 */
+ " jnz 2f\n\t" /* jump if the lock is being waited upon */
+ "1:\n\t"
+ LOCK_SECTION_START("")
+@@ -239,7 +240,7 @@ static inline void __downgrade_write(str
+ {
+ __asm__ __volatile__(
+ "# beginning __downgrade_write\n\t"
+-LOCK_PREFIX " addl %2,(%%eax)\n\t" /* transitions 0xZZZZ0001 ->
0xYYYY0001 */
++LOCK " addl %2,(%%eax)\n\t" /* transitions 0xZZZZ0001 ->
0xYYYY0001 */
+ " js 2f\n\t" /* jump if the lock is being waited upon */
+ "1:\n\t"
+ LOCK_SECTION_START("")
+@@ -263,7 +264,7 @@ LOCK_PREFIX " addl %2,(%%eax)\n\t"
+ static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
+ {
+ __asm__ __volatile__(
+-LOCK_PREFIX "addl %1,%0"
++LOCK "addl %1,%0"
+ : "=m"(sem->count)
+ : "ir"(delta), "m"(sem->count));
+ }
+@@ -276,7 +277,7 @@ static inline int rwsem_atomic_update(in
+ int tmp = delta;
+
+ __asm__ __volatile__(
+-LOCK_PREFIX "xadd %0,(%2)"
++LOCK "xadd %0,(%2)"
+ : "+r"(tmp), "=m"(sem->count)
+ : "r"(sem), "m"(sem->count)
+ : "memory");
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/smp_alt.h
./include/asm-i386/smp_alt.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/smp_alt.h 1970-01-01
01:00:00.000000000 +0100
++++ ./include/asm-i386/smp_alt.h 2006-05-04 17:41:45.000000000 +0100
+@@ -0,0 +1,32 @@
++#ifndef __ASM_SMP_ALT_H__
++#define __ASM_SMP_ALT_H__
++
++#include <linux/config.h>
++
++#ifdef CONFIG_SMP
++#if defined(CONFIG_SMP_ALTERNATIVES) && !defined(MODULE)
++#define LOCK \
++ "6677: nop\n" \
++ ".section __smp_alternatives,\"a\"\n" \
++ ".long 6677b\n" \
++ ".long 6678f\n" \
++ ".previous\n" \
++ ".section __smp_replacements,\"a\"\n" \
++ "6678: .byte 1\n" \
++ ".byte 1\n" \
++ ".byte 0\n" \
++ ".byte 1\n" \
++ ".byte -1\n" \
++ "lock\n" \
++ "nop\n" \
++ ".previous\n"
++void prepare_for_smp(void);
++void unprepare_for_smp(void);
++#else
++#define LOCK "lock ; "
++#endif
++#else
++#define LOCK ""
++#endif
++
++#endif /* __ASM_SMP_ALT_H__ */
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/spinlock.h
./include/asm-i386/spinlock.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/spinlock.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/spinlock.h 2006-05-04 17:41:45.000000000 +0100
+@@ -6,6 +6,7 @@
+ #include <asm/page.h>
+ #include <linux/config.h>
+ #include <linux/compiler.h>
++#include <asm/smp_alt.h>
+
+ /*
+ * Your basic SMP spinlocks, allowing only a single CPU anywhere
+@@ -23,7 +24,8 @@
+
+ #define __raw_spin_lock_string \
+ "\n1:\t" \
+- "lock ; decb %0\n\t" \
++ LOCK \
++ "decb %0\n\t" \
+ "jns 3f\n" \
+ "2:\t" \
+ "rep;nop\n\t" \
+@@ -34,7 +36,8 @@
+
+ #define __raw_spin_lock_string_flags \
+ "\n1:\t" \
+- "lock ; decb %0\n\t" \
++ LOCK \
++ "decb %0\n\t" \
+ "jns 4f\n\t" \
+ "2:\t" \
+ "testl $0x200, %1\n\t" \
+@@ -65,10 +68,34 @@ static inline void __raw_spin_lock_flags
+ static inline int __raw_spin_trylock(raw_spinlock_t *lock)
+ {
+ char oldval;
++#ifdef CONFIG_SMP_ALTERNATIVES
+ __asm__ __volatile__(
+- "xchgb %b0,%1"
++ "1:movb %1,%b0\n"
++ "movb $0,%1\n"
++ "2:"
++ ".section __smp_alternatives,\"a\"\n"
++ ".long 1b\n"
++ ".long 3f\n"
++ ".previous\n"
++ ".section __smp_replacements,\"a\"\n"
++ "3: .byte 2b - 1b\n"
++ ".byte 5f-4f\n"
++ ".byte 0\n"
++ ".byte 6f-5f\n"
++ ".byte -1\n"
++ "4: xchgb %b0,%1\n"
++ "5: movb %1,%b0\n"
++ "movb $0,%1\n"
++ "6:\n"
++ ".previous\n"
+ :"=q" (oldval), "=m" (lock->slock)
+ :"0" (0) : "memory");
++#else
++ __asm__ __volatile__(
++ "xchgb %b0,%1\n"
++ :"=q" (oldval), "=m" (lock->slock)
++ :"0" (0) : "memory");
++#endif
+ return oldval > 0;
+ }
+
+@@ -178,12 +205,12 @@ static inline int __raw_write_trylock(ra
+
+ static inline void __raw_read_unlock(raw_rwlock_t *rw)
+ {
+- asm volatile("lock ; incl %0" :"=m" (rw->lock) : : "memory");
++ asm volatile(LOCK "incl %0" :"=m" (rw->lock) : : "memory");
+ }
+
+ static inline void __raw_write_unlock(raw_rwlock_t *rw)
+ {
+- asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ", %0"
++ asm volatile(LOCK "addl $" RW_LOCK_BIAS_STR ", %0"
+ : "=m" (rw->lock) : : "memory");
+ }
+
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-i386/system.h
./include/asm-i386/system.h
+--- ../pristine-linux-2.6.16.13/include/asm-i386/system.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-i386/system.h 2006-05-04 17:41:45.000000000 +0100
+@@ -5,7 +5,7 @@
+ #include <linux/kernel.h>
+ #include <asm/segment.h>
+ #include <asm/cpufeature.h>
+-#include <linux/bitops.h> /* for LOCK_PREFIX */
++#include <asm/smp_alt.h>
+
+ #ifdef __KERNEL__
+
+@@ -271,19 +271,19 @@ static inline unsigned long __cmpxchg(vo
+ unsigned long prev;
+ switch (size) {
+ case 1:
+- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
++ __asm__ __volatile__(LOCK "cmpxchgb %b1,%2"
+ : "=a"(prev)
+ : "q"(new), "m"(*__xg(ptr)), "0"(old)
+ : "memory");
+ return prev;
+ case 2:
+- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
++ __asm__ __volatile__(LOCK "cmpxchgw %w1,%2"
+ : "=a"(prev)
+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
+ : "memory");
+ return prev;
+ case 4:
+- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
++ __asm__ __volatile__(LOCK "cmpxchgl %1,%2"
+ : "=a"(prev)
+ : "r"(new), "m"(*__xg(ptr)), "0"(old)
+ : "memory");
+@@ -336,7 +336,7 @@ static inline unsigned long long __cmpxc
+ unsigned long long new)
+ {
+ unsigned long long prev;
+- __asm__ __volatile__(LOCK_PREFIX "cmpxchg8b %3"
++ __asm__ __volatile__(LOCK "cmpxchg8b %3"
+ : "=A"(prev)
+ : "b"((unsigned long)new),
+ "c"((unsigned long)(new >> 32)),
+@@ -503,11 +503,55 @@ struct alt_instr {
+ #endif
+
+ #ifdef CONFIG_SMP
++#if defined(CONFIG_SMP_ALTERNATIVES) && !defined(MODULE)
++#define smp_alt_mb(instr) \
++__asm__ __volatile__("6667:\nnop\nnop\nnop\nnop\nnop\nnop\n6668:\n" \
++ ".section __smp_alternatives,\"a\"\n" \
++ ".long 6667b\n" \
++ ".long 6673f\n" \
++ ".previous\n" \
++ ".section __smp_replacements,\"a\"\n" \
++ "6673:.byte 6668b-6667b\n" \
++ ".byte 6670f-6669f\n" \
++ ".byte 6671f-6670f\n" \
++ ".byte 0\n" \
++ ".byte %c0\n" \
++ "6669:lock;addl $0,0(%%esp)\n" \
++ "6670:" instr "\n" \
++ "6671:\n" \
++ ".previous\n" \
++ : \
++ : "i" (X86_FEATURE_XMM2) \
++ : "memory")
++#define smp_rmb() smp_alt_mb("lfence")
++#define smp_mb() smp_alt_mb("mfence")
++#define set_mb(var, value) do { \
++unsigned long __set_mb_temp; \
++__asm__ __volatile__("6667:movl %1, %0\n6668:\n" \
++ ".section __smp_alternatives,\"a\"\n" \
++ ".long 6667b\n" \
++ ".long 6673f\n" \
++ ".previous\n" \
++ ".section __smp_replacements,\"a\"\n" \
++ "6673: .byte 6668b-6667b\n" \
++ ".byte 6670f-6669f\n" \
++ ".byte 0\n" \
++ ".byte 6671f-6670f\n" \
++ ".byte -1\n" \
++ "6669: xchg %1, %0\n" \
++ "6670:movl %1, %0\n" \
++ "6671:\n" \
++ ".previous\n" \
++ : "=m" (var), "=r" (__set_mb_temp) \
++ : "1" (value) \
++ : "memory"); } while (0)
++#else
+ #define smp_mb() mb()
+ #define smp_rmb() rmb()
++#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
++#endif
+ #define smp_wmb() wmb()
+ #define smp_read_barrier_depends() read_barrier_depends()
+-#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
+ #else
+ #define smp_mb() barrier()
+ #define smp_rmb() barrier()
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16.13/x86-increase-interrupt-vector-range.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/x86-increase-interrupt-vector-range.patch Thu May
04 17:44:14 2006 +0100
@@ -0,0 +1,89 @@
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/entry.S
./arch/i386/kernel/entry.S
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/entry.S 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/entry.S 2006-05-04 17:41:49.000000000 +0100
+@@ -406,7 +406,7 @@ vector=0
+ ENTRY(irq_entries_start)
+ .rept NR_IRQS
+ ALIGN
+-1: pushl $vector-256
++1: pushl $~(vector)
+ jmp common_interrupt
+ .data
+ .long 1b
+@@ -423,7 +423,7 @@ common_interrupt:
+
+ #define BUILD_INTERRUPT(name, nr) \
+ ENTRY(name) \
+- pushl $nr-256; \
++ pushl $~(nr); \
+ SAVE_ALL \
+ movl %esp,%eax; \
+ call smp_/**/name; \
+diff -pruN ../pristine-linux-2.6.16.13/arch/i386/kernel/irq.c
./arch/i386/kernel/irq.c
+--- ../pristine-linux-2.6.16.13/arch/i386/kernel/irq.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/i386/kernel/irq.c 2006-05-04 17:41:49.000000000 +0100
+@@ -53,8 +53,8 @@ static union irq_ctx *softirq_ctx[NR_CPU
+ */
+ fastcall unsigned int do_IRQ(struct pt_regs *regs)
+ {
+- /* high bits used in ret_from_ code */
+- int irq = regs->orig_eax & 0xff;
++ /* high bit used in ret_from_ code */
++ int irq = ~regs->orig_eax;
+ #ifdef CONFIG_4KSTACKS
+ union irq_ctx *curctx, *irqctx;
+ u32 *isp;
+diff -pruN ../pristine-linux-2.6.16.13/arch/x86_64/kernel/entry.S
./arch/x86_64/kernel/entry.S
+--- ../pristine-linux-2.6.16.13/arch/x86_64/kernel/entry.S 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/x86_64/kernel/entry.S 2006-05-04 17:41:49.000000000 +0100
+@@ -601,7 +601,7 @@ retint_kernel:
+ */
+ .macro apicinterrupt num,func
+ INTR_FRAME
+- pushq $\num-256
++ pushq $~(\num)
+ CFI_ADJUST_CFA_OFFSET 8
+ interrupt \func
+ jmp ret_from_intr
+diff -pruN ../pristine-linux-2.6.16.13/arch/x86_64/kernel/irq.c
./arch/x86_64/kernel/irq.c
+--- ../pristine-linux-2.6.16.13/arch/x86_64/kernel/irq.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/x86_64/kernel/irq.c 2006-05-04 17:41:49.000000000 +0100
+@@ -96,8 +96,8 @@ skip:
+ */
+ asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
+ {
+- /* high bits used in ret_from_ code */
+- unsigned irq = regs->orig_rax & 0xff;
++ /* high bit used in ret_from_ code */
++ unsigned irq = ~regs->orig_rax;
+
+ exit_idle();
+ irq_enter();
+diff -pruN ../pristine-linux-2.6.16.13/arch/x86_64/kernel/smp.c
./arch/x86_64/kernel/smp.c
+--- ../pristine-linux-2.6.16.13/arch/x86_64/kernel/smp.c 2006-05-02
22:38:44.000000000 +0100
++++ ./arch/x86_64/kernel/smp.c 2006-05-04 17:41:49.000000000 +0100
+@@ -135,10 +135,10 @@ asmlinkage void smp_invalidate_interrupt
+
+ cpu = smp_processor_id();
+ /*
+- * orig_rax contains the interrupt vector - 256.
++ * orig_rax contains the negated interrupt vector.
+ * Use that to determine where the sender put the data.
+ */
+- sender = regs->orig_rax + 256 - INVALIDATE_TLB_VECTOR_START;
++ sender = ~regs->orig_rax - INVALIDATE_TLB_VECTOR_START;
+ f = &per_cpu(flush_state, sender);
+
+ if (!cpu_isset(cpu, f->flush_cpumask))
+diff -pruN ../pristine-linux-2.6.16.13/include/asm-x86_64/hw_irq.h
./include/asm-x86_64/hw_irq.h
+--- ../pristine-linux-2.6.16.13/include/asm-x86_64/hw_irq.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/asm-x86_64/hw_irq.h 2006-05-04 17:41:49.000000000 +0100
+@@ -127,7 +127,7 @@ asmlinkage void IRQ_NAME(nr); \
+ __asm__( \
+ "\n.p2align\n" \
+ "IRQ" #nr "_interrupt:\n\t" \
+- "push $" #nr "-256 ; " \
++ "push $~(" #nr ") ; " \
+ "jmp common_interrupt");
+
+ #if defined(CONFIG_X86_IO_APIC)
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16.13/xenoprof-generic.patch
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/patches/linux-2.6.16.13/xenoprof-generic.patch Thu May 04 17:44:14
2006 +0100
@@ -0,0 +1,384 @@
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/buffer_sync.c
./drivers/oprofile/buffer_sync.c
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/buffer_sync.c 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/oprofile/buffer_sync.c 2006-05-04 17:41:51.000000000 +0100
+@@ -6,6 +6,10 @@
+ *
+ * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
+ *
++ * Modified by Aravind Menon for Xen
++ * These modifications are:
++ * Copyright (C) 2005 Hewlett-Packard Co.
++ *
+ * This is the core of the buffer management. Each
+ * CPU buffer is processed and entered into the
+ * global event buffer. Such processing is necessary
+@@ -275,15 +279,24 @@ static void add_cpu_switch(int i)
+ last_cookie = INVALID_COOKIE;
+ }
+
+-static void add_kernel_ctx_switch(unsigned int in_kernel)
++static void add_cpu_mode_switch(unsigned int cpu_mode)
+ {
+ add_event_entry(ESCAPE_CODE);
+- if (in_kernel)
+- add_event_entry(KERNEL_ENTER_SWITCH_CODE);
+- else
+- add_event_entry(KERNEL_EXIT_SWITCH_CODE);
++ switch (cpu_mode) {
++ case CPU_MODE_USER:
++ add_event_entry(USER_ENTER_SWITCH_CODE);
++ break;
++ case CPU_MODE_KERNEL:
++ add_event_entry(KERNEL_ENTER_SWITCH_CODE);
++ break;
++ case CPU_MODE_XEN:
++ add_event_entry(XEN_ENTER_SWITCH_CODE);
++ break;
++ default:
++ break;
++ }
+ }
+-
++
+ static void
+ add_user_ctx_switch(struct task_struct const * task, unsigned long cookie)
+ {
+@@ -348,9 +361,9 @@ static int add_us_sample(struct mm_struc
+ * for later lookup from userspace.
+ */
+ static int
+-add_sample(struct mm_struct * mm, struct op_sample * s, int in_kernel)
++add_sample(struct mm_struct * mm, struct op_sample * s, int cpu_mode)
+ {
+- if (in_kernel) {
++ if (cpu_mode >= CPU_MODE_KERNEL) {
+ add_sample_entry(s->eip, s->event);
+ return 1;
+ } else if (mm) {
+@@ -496,7 +509,7 @@ void sync_buffer(int cpu)
+ struct mm_struct *mm = NULL;
+ struct task_struct * new;
+ unsigned long cookie = 0;
+- int in_kernel = 1;
++ int cpu_mode = 1;
+ unsigned int i;
+ sync_buffer_state state = sb_buffer_start;
+ unsigned long available;
+@@ -513,12 +526,12 @@ void sync_buffer(int cpu)
+ struct op_sample * s = &cpu_buf->buffer[cpu_buf->tail_pos];
+
+ if (is_code(s->eip)) {
+- if (s->event <= CPU_IS_KERNEL) {
++ if (s->event <= CPU_MODE_XEN) {
+ /* kernel/userspace switch */
+- in_kernel = s->event;
++ cpu_mode = s->event;
+ if (state == sb_buffer_start)
+ state = sb_sample_start;
+- add_kernel_ctx_switch(s->event);
++ add_cpu_mode_switch(s->event);
+ } else if (s->event == CPU_TRACE_BEGIN) {
+ state = sb_bt_start;
+ add_trace_begin();
+@@ -536,7 +549,7 @@ void sync_buffer(int cpu)
+ }
+ } else {
+ if (state >= sb_bt_start &&
+- !add_sample(mm, s, in_kernel)) {
++ !add_sample(mm, s, cpu_mode)) {
+ if (state == sb_bt_start) {
+ state = sb_bt_ignore;
+
atomic_inc(&oprofile_stats.bt_lost_no_mapping);
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/cpu_buffer.c
./drivers/oprofile/cpu_buffer.c
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/cpu_buffer.c 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/oprofile/cpu_buffer.c 2006-05-04 17:41:51.000000000 +0100
+@@ -6,6 +6,10 @@
+ *
+ * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
+ *
++ * Modified by Aravind Menon for Xen
++ * These modifications are:
++ * Copyright (C) 2005 Hewlett-Packard Co.
++ *
+ * Each CPU has a local buffer that stores PC value/event
+ * pairs. We also log context switches when we notice them.
+ * Eventually each CPU's buffer is processed into the global
+@@ -58,7 +62,7 @@ int alloc_cpu_buffers(void)
+ goto fail;
+
+ b->last_task = NULL;
+- b->last_is_kernel = -1;
++ b->last_cpu_mode = -1;
+ b->tracing = 0;
+ b->buffer_size = buffer_size;
+ b->tail_pos = 0;
+@@ -114,7 +118,7 @@ void cpu_buffer_reset(struct oprofile_cp
+ * collected will populate the buffer with proper
+ * values to initialize the buffer
+ */
+- cpu_buf->last_is_kernel = -1;
++ cpu_buf->last_cpu_mode = -1;
+ cpu_buf->last_task = NULL;
+ }
+
+@@ -164,13 +168,13 @@ add_code(struct oprofile_cpu_buffer * bu
+ * because of the head/tail separation of the writer and reader
+ * of the CPU buffer.
+ *
+- * is_kernel is needed because on some architectures you cannot
++ * cpu_mode is needed because on some architectures you cannot
+ * tell if you are in kernel or user space simply by looking at
+- * pc. We tag this in the buffer by generating kernel enter/exit
+- * events whenever is_kernel changes
++ * pc. We tag this in the buffer by generating kernel/user (and xen)
++ * enter events whenever cpu_mode changes
+ */
+ static int log_sample(struct oprofile_cpu_buffer * cpu_buf, unsigned long pc,
+- int is_kernel, unsigned long event)
++ int cpu_mode, unsigned long event)
+ {
+ struct task_struct * task;
+
+@@ -181,16 +185,16 @@ static int log_sample(struct oprofile_cp
+ return 0;
+ }
+
+- is_kernel = !!is_kernel;
++ WARN_ON(cpu_mode > CPU_MODE_XEN);
+
+ task = current;
+
+ /* notice a switch from user->kernel or vice versa */
+- if (cpu_buf->last_is_kernel != is_kernel) {
+- cpu_buf->last_is_kernel = is_kernel;
+- add_code(cpu_buf, is_kernel);
++ if (cpu_buf->last_cpu_mode != cpu_mode) {
++ cpu_buf->last_cpu_mode = cpu_mode;
++ add_code(cpu_buf, cpu_mode);
+ }
+-
++
+ /* notice a task switch */
+ if (cpu_buf->last_task != task) {
+ cpu_buf->last_task = task;
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/cpu_buffer.h
./drivers/oprofile/cpu_buffer.h
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/cpu_buffer.h 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/oprofile/cpu_buffer.h 2006-05-04 17:41:51.000000000 +0100
+@@ -36,7 +36,7 @@ struct oprofile_cpu_buffer {
+ volatile unsigned long tail_pos;
+ unsigned long buffer_size;
+ struct task_struct * last_task;
+- int last_is_kernel;
++ int last_cpu_mode;
+ int tracing;
+ struct op_sample * buffer;
+ unsigned long sample_received;
+@@ -51,7 +51,9 @@ extern struct oprofile_cpu_buffer cpu_bu
+ void cpu_buffer_reset(struct oprofile_cpu_buffer * cpu_buf);
+
+ /* transient events for the CPU buffer -> event buffer */
+-#define CPU_IS_KERNEL 1
+-#define CPU_TRACE_BEGIN 2
++#define CPU_MODE_USER 0
++#define CPU_MODE_KERNEL 1
++#define CPU_MODE_XEN 2
++#define CPU_TRACE_BEGIN 3
+
+ #endif /* OPROFILE_CPU_BUFFER_H */
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/event_buffer.h
./drivers/oprofile/event_buffer.h
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/event_buffer.h
2006-05-02 22:38:44.000000000 +0100
++++ ./drivers/oprofile/event_buffer.h 2006-05-04 17:41:51.000000000 +0100
+@@ -29,11 +29,12 @@ void wake_up_buffer_waiter(void);
+ #define CPU_SWITCH_CODE 2
+ #define COOKIE_SWITCH_CODE 3
+ #define KERNEL_ENTER_SWITCH_CODE 4
+-#define KERNEL_EXIT_SWITCH_CODE 5
++#define USER_ENTER_SWITCH_CODE 5
+ #define MODULE_LOADED_CODE 6
+ #define CTX_TGID_CODE 7
+ #define TRACE_BEGIN_CODE 8
+ #define TRACE_END_CODE 9
++#define XEN_ENTER_SWITCH_CODE 10
+
+ #define INVALID_COOKIE ~0UL
+ #define NO_COOKIE 0UL
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/oprof.c
./drivers/oprofile/oprof.c
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/oprof.c 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/oprofile/oprof.c 2006-05-04 17:41:51.000000000 +0100
+@@ -5,6 +5,10 @@
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
++ *
++ * Modified by Aravind Menon for Xen
++ * These modifications are:
++ * Copyright (C) 2005 Hewlett-Packard Co.
+ */
+
+ #include <linux/kernel.h>
+@@ -19,7 +23,7 @@
+ #include "cpu_buffer.h"
+ #include "buffer_sync.h"
+ #include "oprofile_stats.h"
+-
++
+ struct oprofile_operations oprofile_ops;
+
+ unsigned long oprofile_started;
+@@ -33,6 +37,17 @@ static DECLARE_MUTEX(start_sem);
+ */
+ static int timer = 0;
+
++extern unsigned int adomains;
++extern int active_domains[MAX_OPROF_DOMAINS];
++
++int oprofile_set_active(void)
++{
++ if (oprofile_ops.set_active)
++ return oprofile_ops.set_active(active_domains, adomains);
++
++ return -EINVAL;
++}
++
+ int oprofile_setup(void)
+ {
+ int err;
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/oprof.h
./drivers/oprofile/oprof.h
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/oprof.h 2006-05-02
22:38:44.000000000 +0100
++++ ./drivers/oprofile/oprof.h 2006-05-04 17:41:51.000000000 +0100
+@@ -35,5 +35,7 @@ void oprofile_create_files(struct super_
+ void oprofile_timer_init(struct oprofile_operations * ops);
+
+ int oprofile_set_backtrace(unsigned long depth);
++
++int oprofile_set_active(void);
+
+ #endif /* OPROF_H */
+diff -pruN ../pristine-linux-2.6.16.13/drivers/oprofile/oprofile_files.c
./drivers/oprofile/oprofile_files.c
+--- ../pristine-linux-2.6.16.13/drivers/oprofile/oprofile_files.c
2006-05-02 22:38:44.000000000 +0100
++++ ./drivers/oprofile/oprofile_files.c 2006-05-04 17:41:51.000000000
+0100
+@@ -5,15 +5,21 @@
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
++ *
++ * Modified by Aravind Menon for Xen
++ * These modifications are:
++ * Copyright (C) 2005 Hewlett-Packard Co.
+ */
+
+ #include <linux/fs.h>
+ #include <linux/oprofile.h>
++#include <asm/uaccess.h>
++#include <linux/ctype.h>
+
+ #include "event_buffer.h"
+ #include "oprofile_stats.h"
+ #include "oprof.h"
+-
++
+ unsigned long fs_buffer_size = 131072;
+ unsigned long fs_cpu_buffer_size = 8192;
+ unsigned long fs_buffer_watershed = 32768; /* FIXME: tune */
+@@ -117,11 +123,79 @@ static ssize_t dump_write(struct file *
+ static struct file_operations dump_fops = {
+ .write = dump_write,
+ };
+-
++
++#define TMPBUFSIZE 512
++
++unsigned int adomains = 0;
++long active_domains[MAX_OPROF_DOMAINS];
++
++static ssize_t adomain_write(struct file * file, char const __user * buf,
++ size_t count, loff_t * offset)
++{
++ char tmpbuf[TMPBUFSIZE];
++ char * startp = tmpbuf;
++ char * endp = tmpbuf;
++ int i;
++ unsigned long val;
++
++ if (*offset)
++ return -EINVAL;
++ if (!count)
++ return 0;
++ if (count > TMPBUFSIZE - 1)
++ return -EINVAL;
++
++ memset(tmpbuf, 0x0, TMPBUFSIZE);
++
++ if (copy_from_user(tmpbuf, buf, count))
++ return -EFAULT;
++
++ for (i = 0; i < MAX_OPROF_DOMAINS; i++)
++ active_domains[i] = -1;
++ adomains = 0;
++
++ while (1) {
++ val = simple_strtol(startp, &endp, 0);
++ if (endp == startp)
++ break;
++ while (ispunct(*endp))
++ endp++;
++ active_domains[adomains++] = val;
++ if (adomains >= MAX_OPROF_DOMAINS)
++ break;
++ startp = endp;
++ }
++ if (oprofile_set_active())
++ return -EINVAL;
++ return count;
++}
++
++static ssize_t adomain_read(struct file * file, char __user * buf,
++ size_t count, loff_t * offset)
++{
++ char tmpbuf[TMPBUFSIZE];
++ size_t len = 0;
++ int i;
++ /* This is all screwed up if we run out of space */
++ for (i = 0; i < adomains; i++)
++ len += snprintf(tmpbuf + len, TMPBUFSIZE - len,
++ "%u ", (unsigned int)active_domains[i]);
++ len += snprintf(tmpbuf + len, TMPBUFSIZE - len, "\n");
++ return simple_read_from_buffer((void __user *)buf, count,
++ offset, tmpbuf, len);
++}
++
++
++static struct file_operations active_domain_ops = {
++ .read = adomain_read,
++ .write = adomain_write,
++};
++
+ void oprofile_create_files(struct super_block * sb, struct dentry * root)
+ {
+ oprofilefs_create_file(sb, root, "enable", &enable_fops);
+ oprofilefs_create_file_perm(sb, root, "dump", &dump_fops, 0666);
++ oprofilefs_create_file(sb, root, "active_domains", &active_domain_ops);
+ oprofilefs_create_file(sb, root, "buffer", &event_buffer_fops);
+ oprofilefs_create_ulong(sb, root, "buffer_size", &fs_buffer_size);
+ oprofilefs_create_ulong(sb, root, "buffer_watershed",
&fs_buffer_watershed);
+diff -pruN ../pristine-linux-2.6.16.13/include/linux/oprofile.h
./include/linux/oprofile.h
+--- ../pristine-linux-2.6.16.13/include/linux/oprofile.h 2006-05-02
22:38:44.000000000 +0100
++++ ./include/linux/oprofile.h 2006-05-04 17:41:51.000000000 +0100
+@@ -16,6 +16,8 @@
+ #include <linux/types.h>
+ #include <linux/spinlock.h>
+ #include <asm/atomic.h>
++
++#include <xen/interface/xenoprof.h>
+
+ struct super_block;
+ struct dentry;
+@@ -27,6 +29,8 @@ struct oprofile_operations {
+ /* create any necessary configuration files in the oprofile fs.
+ * Optional. */
+ int (*create_files)(struct super_block * sb, struct dentry * root);
++ /* setup active domains with Xen */
++ int (*set_active)(int *active_domains, unsigned int adomains);
+ /* Do any necessary interrupt setup. Optional. */
+ int (*setup)(void);
+ /* Do any necessary interrupt shutdown. Optional. */
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16/device_bind.patch
--- a/patches/linux-2.6.16/device_bind.patch Thu May 04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,14 +0,0 @@
---- linux-2.6.16/drivers/base/bus.c 2006-03-16 10:50:20.000000000 -0500
-+++ linux-2.6.16/drivers/base/bus.c 2006-03-16 11:02:08.000000000 -0500
-@@ -188,6 +188,11 @@ static ssize_t driver_bind(struct device
- up(&dev->sem);
- if (dev->parent)
- up(&dev->parent->sem);
-+
-+ if (err > 0) /* success */
-+ err = count;
-+ else if (err == 0) /* driver didn't accept device */
-+ err = -ENODEV;
- }
- put_device(dev);
- put_bus(bus);
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16/i386-mach-io-check-nmi.patch
--- a/patches/linux-2.6.16/i386-mach-io-check-nmi.patch Thu May 04 17:38:25
2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,45 +0,0 @@
-diff -pruN ../pristine-linux-2.6.16/arch/i386/kernel/traps.c
./arch/i386/kernel/traps.c
---- ../pristine-linux-2.6.16/arch/i386/kernel/traps.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/kernel/traps.c 2006-03-20 19:38:17.000000000 +0000
-@@ -567,18 +567,11 @@ static void mem_parity_error(unsigned ch
-
- static void io_check_error(unsigned char reason, struct pt_regs * regs)
- {
-- unsigned long i;
--
- printk(KERN_EMERG "NMI: IOCK error (debug interrupt?)\n");
- show_registers(regs);
-
- /* Re-enable the IOCK line, wait for a few seconds */
-- reason = (reason & 0xf) | 8;
-- outb(reason, 0x61);
-- i = 2000;
-- while (--i) udelay(1000);
-- reason &= ~8;
-- outb(reason, 0x61);
-+ clear_io_check_error(reason);
- }
-
- static void unknown_nmi_error(unsigned char reason, struct pt_regs * regs)
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/mach-default/mach_traps.h
./include/asm-i386/mach-default/mach_traps.h
---- ../pristine-linux-2.6.16/include/asm-i386/mach-default/mach_traps.h
2006-03-20 05:53:29.000000000 +0000
-+++ ./include/asm-i386/mach-default/mach_traps.h 2006-03-20
19:38:17.000000000 +0000
-@@ -15,6 +15,18 @@ static inline void clear_mem_error(unsig
- outb(reason, 0x61);
- }
-
-+static inline void clear_io_check_error(unsigned char reason)
-+{
-+ unsigned long i;
-+
-+ reason = (reason & 0xf) | 8;
-+ outb(reason, 0x61);
-+ i = 2000;
-+ while (--i) udelay(1000);
-+ reason &= ~8;
-+ outb(reason, 0x61);
-+}
-+
- static inline unsigned char get_nmi_reason(void)
- {
- return inb(0x61);
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16/net-csum.patch
--- a/patches/linux-2.6.16/net-csum.patch Thu May 04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,64 +0,0 @@
-diff -pruN ../pristine-linux-2.6.16/net/ipv4/netfilter/ip_nat_proto_tcp.c
./net/ipv4/netfilter/ip_nat_proto_tcp.c
---- ../pristine-linux-2.6.16/net/ipv4/netfilter/ip_nat_proto_tcp.c
2006-03-20 05:53:29.000000000 +0000
-+++ ./net/ipv4/netfilter/ip_nat_proto_tcp.c 2006-03-20 19:38:19.000000000
+0000
-@@ -129,10 +129,14 @@ tcp_manip_pkt(struct sk_buff **pskb,
- if (hdrsize < sizeof(*hdr))
- return 1;
-
-- hdr->check = ip_nat_cheat_check(~oldip, newip,
-+ if ((*pskb)->proto_csum_blank) {
-+ hdr->check = ip_nat_cheat_check(oldip, ~newip, hdr->check);
-+ } else {
-+ hdr->check = ip_nat_cheat_check(~oldip, newip,
- ip_nat_cheat_check(oldport ^ 0xFFFF,
- newport,
- hdr->check));
-+ }
- return 1;
- }
-
-diff -pruN ../pristine-linux-2.6.16/net/ipv4/netfilter/ip_nat_proto_udp.c
./net/ipv4/netfilter/ip_nat_proto_udp.c
---- ../pristine-linux-2.6.16/net/ipv4/netfilter/ip_nat_proto_udp.c
2006-03-20 05:53:29.000000000 +0000
-+++ ./net/ipv4/netfilter/ip_nat_proto_udp.c 2006-03-20 19:38:19.000000000
+0000
-@@ -113,11 +113,16 @@ udp_manip_pkt(struct sk_buff **pskb,
- newport = tuple->dst.u.udp.port;
- portptr = &hdr->dest;
- }
-- if (hdr->check) /* 0 is a special case meaning no checksum */
-- hdr->check = ip_nat_cheat_check(~oldip, newip,
-+ if (hdr->check) { /* 0 is a special case meaning no checksum */
-+ if ((*pskb)->proto_csum_blank) {
-+ hdr->check = ip_nat_cheat_check(oldip, ~newip,
hdr->check);
-+ } else {
-+ hdr->check = ip_nat_cheat_check(~oldip, newip,
- ip_nat_cheat_check(*portptr ^ 0xFFFF,
- newport,
- hdr->check));
-+ }
-+ }
- *portptr = newport;
- return 1;
- }
-diff -r 601fa226a761 net/ipv4/xfrm4_output.c
---- a/net/ipv4/xfrm4_output.c Wed Apr 19 18:52:30 2006
-+++ b/net/ipv4/xfrm4_output.c Thu Apr 20 15:49:40 2006
-@@ -16,6 +16,8 @@
- #include <net/ip.h>
- #include <net/xfrm.h>
- #include <net/icmp.h>
-+
-+extern int skb_checksum_setup(struct sk_buff *skb);
-
- /* Add encapsulation header.
- *
-@@ -103,6 +105,10 @@
- struct xfrm_state *x = dst->xfrm;
- int err;
-
-+ err = skb_checksum_setup(skb);
-+ if (err)
-+ goto error_nolock;
-+
- if (skb->ip_summed == CHECKSUM_HW) {
- err = skb_checksum_help(skb, 0);
- if (err)
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16/pmd-shared.patch
--- a/patches/linux-2.6.16/pmd-shared.patch Thu May 04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,111 +0,0 @@
-diff -pruN ../pristine-linux-2.6.16/arch/i386/mm/pageattr.c
./arch/i386/mm/pageattr.c
---- ../pristine-linux-2.6.16/arch/i386/mm/pageattr.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/mm/pageattr.c 2006-03-20 19:38:23.000000000 +0000
-@@ -78,7 +78,7 @@ static void set_pmd_pte(pte_t *kpte, uns
- unsigned long flags;
-
- set_pte_atomic(kpte, pte); /* change init_mm */
-- if (PTRS_PER_PMD > 1)
-+ if (HAVE_SHARED_KERNEL_PMD)
- return;
-
- spin_lock_irqsave(&pgd_lock, flags);
-diff -pruN ../pristine-linux-2.6.16/arch/i386/mm/pgtable.c
./arch/i386/mm/pgtable.c
---- ../pristine-linux-2.6.16/arch/i386/mm/pgtable.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/mm/pgtable.c 2006-03-20 19:38:23.000000000 +0000
-@@ -215,9 +215,10 @@ void pgd_ctor(void *pgd, kmem_cache_t *c
- spin_lock_irqsave(&pgd_lock, flags);
- }
-
-- clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
-- swapper_pg_dir + USER_PTRS_PER_PGD,
-- KERNEL_PGD_PTRS);
-+ if (PTRS_PER_PMD == 1 || HAVE_SHARED_KERNEL_PMD)
-+ clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
-+ swapper_pg_dir + USER_PTRS_PER_PGD,
-+ KERNEL_PGD_PTRS);
- if (PTRS_PER_PMD > 1)
- return;
-
-@@ -249,6 +250,30 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
- goto out_oom;
- set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
- }
-+
-+ if (!HAVE_SHARED_KERNEL_PMD) {
-+ unsigned long flags;
-+
-+ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+ pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
-+ if (!pmd)
-+ goto out_oom;
-+ set_pgd(&pgd[USER_PTRS_PER_PGD], __pgd(1 + __pa(pmd)));
-+ }
-+
-+ spin_lock_irqsave(&pgd_lock, flags);
-+ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+ unsigned long v = (unsigned long)i << PGDIR_SHIFT;
-+ pgd_t *kpgd = pgd_offset_k(v);
-+ pud_t *kpud = pud_offset(kpgd, v);
-+ pmd_t *kpmd = pmd_offset(kpud, v);
-+ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+ memcpy(pmd, kpmd, PAGE_SIZE);
-+ }
-+ pgd_list_add(pgd);
-+ spin_unlock_irqrestore(&pgd_lock, flags);
-+ }
-+
- return pgd;
-
- out_oom:
-@@ -263,9 +288,23 @@ void pgd_free(pgd_t *pgd)
- int i;
-
- /* in the PAE case user pgd entries are overwritten before usage */
-- if (PTRS_PER_PMD > 1)
-- for (i = 0; i < USER_PTRS_PER_PGD; ++i)
-- kmem_cache_free(pmd_cache, (void
*)__va(pgd_val(pgd[i])-1));
-+ if (PTRS_PER_PMD > 1) {
-+ for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
-+ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+ kmem_cache_free(pmd_cache, pmd);
-+ }
-+ if (!HAVE_SHARED_KERNEL_PMD) {
-+ unsigned long flags;
-+ spin_lock_irqsave(&pgd_lock, flags);
-+ pgd_list_del(pgd);
-+ spin_unlock_irqrestore(&pgd_lock, flags);
-+ for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+ pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+ memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
-+ kmem_cache_free(pmd_cache, pmd);
-+ }
-+ }
-+ }
- /* in the non-PAE case, free_pgtables() clears user pgd entries */
- kmem_cache_free(pgd_cache, pgd);
- }
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/pgtable-2level-defs.h
./include/asm-i386/pgtable-2level-defs.h
---- ../pristine-linux-2.6.16/include/asm-i386/pgtable-2level-defs.h
2006-03-20 05:53:29.000000000 +0000
-+++ ./include/asm-i386/pgtable-2level-defs.h 2006-03-20 19:38:23.000000000
+0000
-@@ -1,6 +1,8 @@
- #ifndef _I386_PGTABLE_2LEVEL_DEFS_H
- #define _I386_PGTABLE_2LEVEL_DEFS_H
-
-+#define HAVE_SHARED_KERNEL_PMD 0
-+
- /*
- * traditional i386 two-level paging structure:
- */
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/pgtable-3level-defs.h
./include/asm-i386/pgtable-3level-defs.h
---- ../pristine-linux-2.6.16/include/asm-i386/pgtable-3level-defs.h
2006-03-20 05:53:29.000000000 +0000
-+++ ./include/asm-i386/pgtable-3level-defs.h 2006-03-20 19:38:23.000000000
+0000
-@@ -1,6 +1,8 @@
- #ifndef _I386_PGTABLE_3LEVEL_DEFS_H
- #define _I386_PGTABLE_3LEVEL_DEFS_H
-
-+#define HAVE_SHARED_KERNEL_PMD 1
-+
- /*
- * PGDIR_SHIFT determines what a top-level page table entry can map
- */
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch
--- a/patches/linux-2.6.16/rename-TSS_sysenter_esp0-SYSENTER_stack_esp0.patch
Thu May 04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,31 +0,0 @@
-Index: sysenter/linux-2.6-xen-sparse/arch/i386/kernel/entry.S
-===================================================================
---- linux-2.6.16.orig/arch/i386/kernel/entry.S 2006-04-05 11:12:51.000000000
+0100
-+++ linux-2.6.16/arch/i386/kernel/entry.S 2006-04-05 11:12:52.000000000
+0100
-@@ -177,7 +177,7 @@
-
- # sysenter call handler stub
- ENTRY(sysenter_entry)
-- movl TSS_sysenter_esp0(%esp),%esp
-+ movl SYSENTER_stack_esp0(%esp),%esp
- sysenter_past_esp:
- sti
- pushl $(__USER_DS)
-@@ -492,7 +492,7 @@
- * that sets up the real kernel stack. Check here, since we can't
- * allow the wrong stack to be used.
- *
-- * "TSS_sysenter_esp0+12" is because the NMI/debug handler will have
-+ * "SYSENTER_stack_esp0+12" is because the NMI/debug handler will have
- * already pushed 3 words if it hits on the sysenter instruction:
- * eflags, cs and eip.
- *
-@@ -504,7 +504,7 @@
- cmpw $__KERNEL_CS,4(%esp); \
- jne ok; \
- label: \
-- movl TSS_sysenter_esp0+offset(%esp),%esp; \
-+ movl SYSENTER_stack_esp0+offset(%esp),%esp; \
- pushfl; \
- pushl $__KERNEL_CS; \
- pushl $sysenter_past_esp
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16/smp-alts.patch
--- a/patches/linux-2.6.16/smp-alts.patch Thu May 04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,591 +0,0 @@
-diff -pruN ../pristine-linux-2.6.16/arch/i386/Kconfig ./arch/i386/Kconfig
---- ../pristine-linux-2.6.16/arch/i386/Kconfig 2006-03-20 05:53:29.000000000
+0000
-+++ ./arch/i386/Kconfig 2006-03-20 19:38:27.000000000 +0000
-@@ -202,6 +202,19 @@ config SMP
-
- If you don't know what to do here, say N.
-
-+config SMP_ALTERNATIVES
-+ bool "SMP alternatives support (EXPERIMENTAL)"
-+ depends on SMP && EXPERIMENTAL
-+ help
-+ Try to reduce the overhead of running an SMP kernel on a uniprocessor
-+ host slightly by replacing certain key instruction sequences
-+ according to whether we currently have more than one CPU available.
-+ This should provide a noticeable boost to performance when
-+ running SMP kernels on UP machines, and have negligible impact
-+ when running on an true SMP host.
-+
-+ If unsure, say N.
-+
- config NR_CPUS
- int "Maximum number of CPUs (2-255)"
- range 2 255
-diff -pruN ../pristine-linux-2.6.16/arch/i386/kernel/Makefile
./arch/i386/kernel/Makefile
---- ../pristine-linux-2.6.16/arch/i386/kernel/Makefile 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/kernel/Makefile 2006-03-20 19:38:27.000000000 +0000
-@@ -37,6 +37,7 @@ obj-$(CONFIG_EFI) += efi.o efi_stub.o
- obj-$(CONFIG_DOUBLEFAULT) += doublefault.o
- obj-$(CONFIG_VM86) += vm86.o
- obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-+obj-$(CONFIG_SMP_ALTERNATIVES) += smpalts.o
-
- EXTRA_AFLAGS := -traditional
-
-diff -pruN ../pristine-linux-2.6.16/arch/i386/kernel/smpalts.c
./arch/i386/kernel/smpalts.c
---- ../pristine-linux-2.6.16/arch/i386/kernel/smpalts.c 1970-01-01
01:00:00.000000000 +0100
-+++ ./arch/i386/kernel/smpalts.c 2006-03-20 19:38:27.000000000 +0000
-@@ -0,0 +1,85 @@
-+#include <linux/kernel.h>
-+#include <asm/system.h>
-+#include <asm/smp_alt.h>
-+#include <asm/processor.h>
-+#include <asm/string.h>
-+
-+struct smp_replacement_record {
-+ unsigned char targ_size;
-+ unsigned char smp1_size;
-+ unsigned char smp2_size;
-+ unsigned char up_size;
-+ unsigned char feature;
-+ unsigned char data[0];
-+};
-+
-+struct smp_alternative_record {
-+ void *targ_start;
-+ struct smp_replacement_record *repl;
-+};
-+
-+extern struct smp_alternative_record __start_smp_alternatives_table,
-+ __stop_smp_alternatives_table;
-+extern unsigned long __init_begin, __init_end;
-+
-+void prepare_for_smp(void)
-+{
-+ struct smp_alternative_record *r;
-+ printk(KERN_INFO "Enabling SMP...\n");
-+ for (r = &__start_smp_alternatives_table;
-+ r != &__stop_smp_alternatives_table;
-+ r++) {
-+ BUG_ON(r->repl->targ_size < r->repl->smp1_size);
-+ BUG_ON(r->repl->targ_size < r->repl->smp2_size);
-+ BUG_ON(r->repl->targ_size < r->repl->up_size);
-+ if (system_state == SYSTEM_RUNNING &&
-+ r->targ_start >= (void *)&__init_begin &&
-+ r->targ_start < (void *)&__init_end)
-+ continue;
-+ if (r->repl->feature != (unsigned char)-1 &&
-+ boot_cpu_has(r->repl->feature)) {
-+ memcpy(r->targ_start,
-+ r->repl->data + r->repl->smp1_size,
-+ r->repl->smp2_size);
-+ memset(r->targ_start + r->repl->smp2_size,
-+ 0x90,
-+ r->repl->targ_size - r->repl->smp2_size);
-+ } else {
-+ memcpy(r->targ_start,
-+ r->repl->data,
-+ r->repl->smp1_size);
-+ memset(r->targ_start + r->repl->smp1_size,
-+ 0x90,
-+ r->repl->targ_size - r->repl->smp1_size);
-+ }
-+ }
-+ /* Paranoia */
-+ asm volatile ("jmp 1f\n1:");
-+ mb();
-+}
-+
-+void unprepare_for_smp(void)
-+{
-+ struct smp_alternative_record *r;
-+ printk(KERN_INFO "Disabling SMP...\n");
-+ for (r = &__start_smp_alternatives_table;
-+ r != &__stop_smp_alternatives_table;
-+ r++) {
-+ BUG_ON(r->repl->targ_size < r->repl->smp1_size);
-+ BUG_ON(r->repl->targ_size < r->repl->smp2_size);
-+ BUG_ON(r->repl->targ_size < r->repl->up_size);
-+ if (system_state == SYSTEM_RUNNING &&
-+ r->targ_start >= (void *)&__init_begin &&
-+ r->targ_start < (void *)&__init_end)
-+ continue;
-+ memcpy(r->targ_start,
-+ r->repl->data + r->repl->smp1_size + r->repl->smp2_size,
-+ r->repl->up_size);
-+ memset(r->targ_start + r->repl->up_size,
-+ 0x90,
-+ r->repl->targ_size - r->repl->up_size);
-+ }
-+ /* Paranoia */
-+ asm volatile ("jmp 1f\n1:");
-+ mb();
-+}
-diff -pruN ../pristine-linux-2.6.16/arch/i386/kernel/smpboot.c
./arch/i386/kernel/smpboot.c
---- ../pristine-linux-2.6.16/arch/i386/kernel/smpboot.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/kernel/smpboot.c 2006-03-20 19:38:27.000000000 +0000
-@@ -1218,6 +1218,11 @@ static void __init smp_boot_cpus(unsigne
- if (max_cpus <= cpucount+1)
- continue;
-
-+#ifdef CONFIG_SMP_ALTERNATIVES
-+ if (kicked == 1)
-+ prepare_for_smp();
-+#endif
-+
- if (((cpu = alloc_cpu_id()) <= 0) || do_boot_cpu(apicid, cpu))
- printk("CPU #%d not responding - cannot use it.\n",
- apicid);
-@@ -1396,6 +1401,11 @@ int __devinit __cpu_up(unsigned int cpu)
- return -EIO;
- }
-
-+#ifdef CONFIG_SMP_ALTERNATIVES
-+ if (num_online_cpus() == 1)
-+ prepare_for_smp();
-+#endif
-+
- local_irq_enable();
- per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
- /* Unleash the CPU! */
-diff -pruN ../pristine-linux-2.6.16/arch/i386/kernel/vmlinux.lds.S
./arch/i386/kernel/vmlinux.lds.S
---- ../pristine-linux-2.6.16/arch/i386/kernel/vmlinux.lds.S 2006-03-20
05:53:29.000000000 +0000
-+++ ./arch/i386/kernel/vmlinux.lds.S 2006-03-20 19:38:27.000000000 +0000
-@@ -34,6 +34,13 @@ SECTIONS
- __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
- __stop___ex_table = .;
-
-+ . = ALIGN(16);
-+ __start_smp_alternatives_table = .;
-+ __smp_alternatives : { *(__smp_alternatives) }
-+ __stop_smp_alternatives_table = .;
-+
-+ __smp_replacements : { *(__smp_replacements) }
-+
- RODATA
-
- /* writeable */
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/atomic.h
./include/asm-i386/atomic.h
---- ../pristine-linux-2.6.16/include/asm-i386/atomic.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/atomic.h 2006-03-20 19:38:27.000000000 +0000
-@@ -4,18 +4,13 @@
- #include <linux/config.h>
- #include <linux/compiler.h>
- #include <asm/processor.h>
-+#include <asm/smp_alt.h>
-
- /*
- * Atomic operations that C can't guarantee us. Useful for
- * resource counting etc..
- */
-
--#ifdef CONFIG_SMP
--#define LOCK "lock ; "
--#else
--#define LOCK ""
--#endif
--
- /*
- * Make sure gcc doesn't try to be clever and move things around
- * on us. We need to use _exactly_ the address the user gave us,
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/bitops.h
./include/asm-i386/bitops.h
---- ../pristine-linux-2.6.16/include/asm-i386/bitops.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/bitops.h 2006-03-20 19:38:27.000000000 +0000
-@@ -7,6 +7,7 @@
-
- #include <linux/config.h>
- #include <linux/compiler.h>
-+#include <asm/smp_alt.h>
-
- /*
- * These have to be done with inline assembly: that way the bit-setting
-@@ -16,12 +17,6 @@
- * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
- */
-
--#ifdef CONFIG_SMP
--#define LOCK_PREFIX "lock ; "
--#else
--#define LOCK_PREFIX ""
--#endif
--
- #define ADDR (*(volatile long *) addr)
-
- /**
-@@ -41,7 +36,7 @@
- */
- static inline void set_bit(int nr, volatile unsigned long * addr)
- {
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btsl %1,%0"
- :"+m" (ADDR)
- :"Ir" (nr));
-@@ -76,7 +71,7 @@ static inline void __set_bit(int nr, vol
- */
- static inline void clear_bit(int nr, volatile unsigned long * addr)
- {
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btrl %1,%0"
- :"+m" (ADDR)
- :"Ir" (nr));
-@@ -121,7 +116,7 @@ static inline void __change_bit(int nr,
- */
- static inline void change_bit(int nr, volatile unsigned long * addr)
- {
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btcl %1,%0"
- :"+m" (ADDR)
- :"Ir" (nr));
-@@ -140,7 +135,7 @@ static inline int test_and_set_bit(int n
- {
- int oldbit;
-
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btsl %2,%1\n\tsbbl %0,%0"
- :"=r" (oldbit),"+m" (ADDR)
- :"Ir" (nr) : "memory");
-@@ -180,7 +175,7 @@ static inline int test_and_clear_bit(int
- {
- int oldbit;
-
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btrl %2,%1\n\tsbbl %0,%0"
- :"=r" (oldbit),"+m" (ADDR)
- :"Ir" (nr) : "memory");
-@@ -231,7 +226,7 @@ static inline int test_and_change_bit(in
- {
- int oldbit;
-
-- __asm__ __volatile__( LOCK_PREFIX
-+ __asm__ __volatile__( LOCK
- "btcl %2,%1\n\tsbbl %0,%0"
- :"=r" (oldbit),"+m" (ADDR)
- :"Ir" (nr) : "memory");
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/futex.h
./include/asm-i386/futex.h
---- ../pristine-linux-2.6.16/include/asm-i386/futex.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/futex.h 2006-03-20 19:38:27.000000000 +0000
-@@ -28,7 +28,7 @@
- "1: movl %2, %0\n\
- movl %0, %3\n" \
- insn "\n" \
--"2: " LOCK_PREFIX "cmpxchgl %3, %2\n\
-+"2: " LOCK "cmpxchgl %3, %2\n\
- jnz 1b\n\
- 3: .section .fixup,\"ax\"\n\
- 4: mov %5, %1\n\
-@@ -68,7 +68,7 @@ futex_atomic_op_inuser (int encoded_op,
- #endif
- switch (op) {
- case FUTEX_OP_ADD:
-- __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret,
-+ __futex_atomic_op1(LOCK "xaddl %0, %2", ret,
- oldval, uaddr, oparg);
- break;
- case FUTEX_OP_OR:
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/rwsem.h
./include/asm-i386/rwsem.h
---- ../pristine-linux-2.6.16/include/asm-i386/rwsem.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/rwsem.h 2006-03-20 19:38:27.000000000 +0000
-@@ -40,6 +40,7 @@
-
- #include <linux/list.h>
- #include <linux/spinlock.h>
-+#include <asm/smp_alt.h>
-
- struct rwsem_waiter;
-
-@@ -99,7 +100,7 @@ static inline void __down_read(struct rw
- {
- __asm__ __volatile__(
- "# beginning down_read\n\t"
--LOCK_PREFIX " incl (%%eax)\n\t" /* adds 0x00000001, returns the old
value */
-+LOCK " incl (%%eax)\n\t" /* adds 0x00000001, returns the old
value */
- " js 2f\n\t" /* jump if we weren't granted the lock */
- "1:\n\t"
- LOCK_SECTION_START("")
-@@ -130,7 +131,7 @@ static inline int __down_read_trylock(st
- " movl %1,%2\n\t"
- " addl %3,%2\n\t"
- " jle 2f\n\t"
--LOCK_PREFIX " cmpxchgl %2,%0\n\t"
-+LOCK " cmpxchgl %2,%0\n\t"
- " jnz 1b\n\t"
- "2:\n\t"
- "# ending __down_read_trylock\n\t"
-@@ -150,7 +151,7 @@ static inline void __down_write(struct r
- tmp = RWSEM_ACTIVE_WRITE_BIAS;
- __asm__ __volatile__(
- "# beginning down_write\n\t"
--LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtract 0x0000ffff, returns
the old value */
-+LOCK " xadd %%edx,(%%eax)\n\t" /* subtract 0x0000ffff, returns
the old value */
- " testl %%edx,%%edx\n\t" /* was the count 0 before? */
- " jnz 2f\n\t" /* jump if we weren't granted the lock */
- "1:\n\t"
-@@ -188,7 +189,7 @@ static inline void __up_read(struct rw_s
- __s32 tmp = -RWSEM_ACTIVE_READ_BIAS;
- __asm__ __volatile__(
- "# beginning __up_read\n\t"
--LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns the old
value */
-+LOCK " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns the old
value */
- " js 2f\n\t" /* jump if the lock is being waited upon */
- "1:\n\t"
- LOCK_SECTION_START("")
-@@ -214,7 +215,7 @@ static inline void __up_write(struct rw_
- __asm__ __volatile__(
- "# beginning __up_write\n\t"
- " movl %2,%%edx\n\t"
--LOCK_PREFIX " xaddl %%edx,(%%eax)\n\t" /* tries to transition
0xffff0001 -> 0x00000000 */
-+LOCK " xaddl %%edx,(%%eax)\n\t" /* tries to transition
0xffff0001 -> 0x00000000 */
- " jnz 2f\n\t" /* jump if the lock is being waited upon */
- "1:\n\t"
- LOCK_SECTION_START("")
-@@ -239,7 +240,7 @@ static inline void __downgrade_write(str
- {
- __asm__ __volatile__(
- "# beginning __downgrade_write\n\t"
--LOCK_PREFIX " addl %2,(%%eax)\n\t" /* transitions 0xZZZZ0001 ->
0xYYYY0001 */
-+LOCK " addl %2,(%%eax)\n\t" /* transitions 0xZZZZ0001 ->
0xYYYY0001 */
- " js 2f\n\t" /* jump if the lock is being waited upon */
- "1:\n\t"
- LOCK_SECTION_START("")
-@@ -263,7 +264,7 @@ LOCK_PREFIX " addl %2,(%%eax)\n\t"
- static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
- {
- __asm__ __volatile__(
--LOCK_PREFIX "addl %1,%0"
-+LOCK "addl %1,%0"
- : "=m"(sem->count)
- : "ir"(delta), "m"(sem->count));
- }
-@@ -276,7 +277,7 @@ static inline int rwsem_atomic_update(in
- int tmp = delta;
-
- __asm__ __volatile__(
--LOCK_PREFIX "xadd %0,(%2)"
-+LOCK "xadd %0,(%2)"
- : "+r"(tmp), "=m"(sem->count)
- : "r"(sem), "m"(sem->count)
- : "memory");
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/smp_alt.h
./include/asm-i386/smp_alt.h
---- ../pristine-linux-2.6.16/include/asm-i386/smp_alt.h 1970-01-01
01:00:00.000000000 +0100
-+++ ./include/asm-i386/smp_alt.h 2006-03-20 19:38:27.000000000 +0000
-@@ -0,0 +1,32 @@
-+#ifndef __ASM_SMP_ALT_H__
-+#define __ASM_SMP_ALT_H__
-+
-+#include <linux/config.h>
-+
-+#ifdef CONFIG_SMP
-+#if defined(CONFIG_SMP_ALTERNATIVES) && !defined(MODULE)
-+#define LOCK \
-+ "6677: nop\n" \
-+ ".section __smp_alternatives,\"a\"\n" \
-+ ".long 6677b\n" \
-+ ".long 6678f\n" \
-+ ".previous\n" \
-+ ".section __smp_replacements,\"a\"\n" \
-+ "6678: .byte 1\n" \
-+ ".byte 1\n" \
-+ ".byte 0\n" \
-+ ".byte 1\n" \
-+ ".byte -1\n" \
-+ "lock\n" \
-+ "nop\n" \
-+ ".previous\n"
-+void prepare_for_smp(void);
-+void unprepare_for_smp(void);
-+#else
-+#define LOCK "lock ; "
-+#endif
-+#else
-+#define LOCK ""
-+#endif
-+
-+#endif /* __ASM_SMP_ALT_H__ */
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/spinlock.h
./include/asm-i386/spinlock.h
---- ../pristine-linux-2.6.16/include/asm-i386/spinlock.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/spinlock.h 2006-03-20 19:38:27.000000000 +0000
-@@ -6,6 +6,7 @@
- #include <asm/page.h>
- #include <linux/config.h>
- #include <linux/compiler.h>
-+#include <asm/smp_alt.h>
-
- /*
- * Your basic SMP spinlocks, allowing only a single CPU anywhere
-@@ -23,7 +24,8 @@
-
- #define __raw_spin_lock_string \
- "\n1:\t" \
-- "lock ; decb %0\n\t" \
-+ LOCK \
-+ "decb %0\n\t" \
- "jns 3f\n" \
- "2:\t" \
- "rep;nop\n\t" \
-@@ -34,7 +36,8 @@
-
- #define __raw_spin_lock_string_flags \
- "\n1:\t" \
-- "lock ; decb %0\n\t" \
-+ LOCK \
-+ "decb %0\n\t" \
- "jns 4f\n\t" \
- "2:\t" \
- "testl $0x200, %1\n\t" \
-@@ -65,10 +68,34 @@ static inline void __raw_spin_lock_flags
- static inline int __raw_spin_trylock(raw_spinlock_t *lock)
- {
- char oldval;
-+#ifdef CONFIG_SMP_ALTERNATIVES
- __asm__ __volatile__(
-- "xchgb %b0,%1"
-+ "1:movb %1,%b0\n"
-+ "movb $0,%1\n"
-+ "2:"
-+ ".section __smp_alternatives,\"a\"\n"
-+ ".long 1b\n"
-+ ".long 3f\n"
-+ ".previous\n"
-+ ".section __smp_replacements,\"a\"\n"
-+ "3: .byte 2b - 1b\n"
-+ ".byte 5f-4f\n"
-+ ".byte 0\n"
-+ ".byte 6f-5f\n"
-+ ".byte -1\n"
-+ "4: xchgb %b0,%1\n"
-+ "5: movb %1,%b0\n"
-+ "movb $0,%1\n"
-+ "6:\n"
-+ ".previous\n"
- :"=q" (oldval), "=m" (lock->slock)
- :"0" (0) : "memory");
-+#else
-+ __asm__ __volatile__(
-+ "xchgb %b0,%1\n"
-+ :"=q" (oldval), "=m" (lock->slock)
-+ :"0" (0) : "memory");
-+#endif
- return oldval > 0;
- }
-
-@@ -178,12 +205,12 @@ static inline int __raw_write_trylock(ra
-
- static inline void __raw_read_unlock(raw_rwlock_t *rw)
- {
-- asm volatile("lock ; incl %0" :"=m" (rw->lock) : : "memory");
-+ asm volatile(LOCK "incl %0" :"=m" (rw->lock) : : "memory");
- }
-
- static inline void __raw_write_unlock(raw_rwlock_t *rw)
- {
-- asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ", %0"
-+ asm volatile(LOCK "addl $" RW_LOCK_BIAS_STR ", %0"
- : "=m" (rw->lock) : : "memory");
- }
-
-diff -pruN ../pristine-linux-2.6.16/include/asm-i386/system.h
./include/asm-i386/system.h
---- ../pristine-linux-2.6.16/include/asm-i386/system.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/asm-i386/system.h 2006-03-20 19:38:27.000000000 +0000
-@@ -5,7 +5,7 @@
- #include <linux/kernel.h>
- #include <asm/segment.h>
- #include <asm/cpufeature.h>
--#include <linux/bitops.h> /* for LOCK_PREFIX */
-+#include <asm/smp_alt.h>
-
- #ifdef __KERNEL__
-
-@@ -271,19 +271,19 @@ static inline unsigned long __cmpxchg(vo
- unsigned long prev;
- switch (size) {
- case 1:
-- __asm__ __volatile__(LOCK_PREFIX "cmpxchgb %b1,%2"
-+ __asm__ __volatile__(LOCK "cmpxchgb %b1,%2"
- : "=a"(prev)
- : "q"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 2:
-- __asm__ __volatile__(LOCK_PREFIX "cmpxchgw %w1,%2"
-+ __asm__ __volatile__(LOCK "cmpxchgw %w1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
- return prev;
- case 4:
-- __asm__ __volatile__(LOCK_PREFIX "cmpxchgl %1,%2"
-+ __asm__ __volatile__(LOCK "cmpxchgl %1,%2"
- : "=a"(prev)
- : "r"(new), "m"(*__xg(ptr)), "0"(old)
- : "memory");
-@@ -336,7 +336,7 @@ static inline unsigned long long __cmpxc
- unsigned long long new)
- {
- unsigned long long prev;
-- __asm__ __volatile__(LOCK_PREFIX "cmpxchg8b %3"
-+ __asm__ __volatile__(LOCK "cmpxchg8b %3"
- : "=A"(prev)
- : "b"((unsigned long)new),
- "c"((unsigned long)(new >> 32)),
-@@ -503,11 +503,55 @@ struct alt_instr {
- #endif
-
- #ifdef CONFIG_SMP
-+#if defined(CONFIG_SMP_ALTERNATIVES) && !defined(MODULE)
-+#define smp_alt_mb(instr) \
-+__asm__ __volatile__("6667:\nnop\nnop\nnop\nnop\nnop\nnop\n6668:\n" \
-+ ".section __smp_alternatives,\"a\"\n" \
-+ ".long 6667b\n" \
-+ ".long 6673f\n" \
-+ ".previous\n" \
-+ ".section __smp_replacements,\"a\"\n" \
-+ "6673:.byte 6668b-6667b\n" \
-+ ".byte 6670f-6669f\n" \
-+ ".byte 6671f-6670f\n" \
-+ ".byte 0\n" \
-+ ".byte %c0\n" \
-+ "6669:lock;addl $0,0(%%esp)\n" \
-+ "6670:" instr "\n" \
-+ "6671:\n" \
-+ ".previous\n" \
-+ : \
-+ : "i" (X86_FEATURE_XMM2) \
-+ : "memory")
-+#define smp_rmb() smp_alt_mb("lfence")
-+#define smp_mb() smp_alt_mb("mfence")
-+#define set_mb(var, value) do { \
-+unsigned long __set_mb_temp; \
-+__asm__ __volatile__("6667:movl %1, %0\n6668:\n" \
-+ ".section __smp_alternatives,\"a\"\n" \
-+ ".long 6667b\n" \
-+ ".long 6673f\n" \
-+ ".previous\n" \
-+ ".section __smp_replacements,\"a\"\n" \
-+ "6673: .byte 6668b-6667b\n" \
-+ ".byte 6670f-6669f\n" \
-+ ".byte 0\n" \
-+ ".byte 6671f-6670f\n" \
-+ ".byte -1\n" \
-+ "6669: xchg %1, %0\n" \
-+ "6670:movl %1, %0\n" \
-+ "6671:\n" \
-+ ".previous\n" \
-+ : "=m" (var), "=r" (__set_mb_temp) \
-+ : "1" (value) \
-+ : "memory"); } while (0)
-+#else
- #define smp_mb() mb()
- #define smp_rmb() rmb()
-+#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
-+#endif
- #define smp_wmb() wmb()
- #define smp_read_barrier_depends() read_barrier_depends()
--#define set_mb(var, value) do { (void) xchg(&var, value); } while (0)
- #else
- #define smp_mb() barrier()
- #define smp_rmb() barrier()
diff -r 44e5abbf333b -r ad5b833122a8
patches/linux-2.6.16/x86-increase-interrupt-vector-range.patch
--- a/patches/linux-2.6.16/x86-increase-interrupt-vector-range.patch Thu May
04 17:38:25 2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,107 +0,0 @@
-Subject: Increase x86 interrupt vector range
-
-Remove the limit of 256 interrupt vectors by changing the value
-stored in orig_{e,r}ax to be the negated interrupt vector.
-The orig_{e,r}ax needs to be < 0 to allow the signal code to
-distinguish between return from interrupt and return from syscall.
-With this change applied, NR_IRQS can be > 256.
-
-Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
----
- arch/i386/kernel/entry.S | 4 ++--
- arch/i386/kernel/irq.c | 4 ++--
- arch/x86_64/kernel/entry.S | 2 +-
- arch/x86_64/kernel/irq.c | 4 ++--
- arch/x86_64/kernel/smp.c | 4 ++--
- include/asm-x86_64/hw_irq.h | 2 +-
- 6 files changed, 10 insertions(+), 10 deletions(-)
-
-diff -r 7d239c83edea arch/i386/kernel/entry.S
---- a/arch/i386/kernel/entry.S Mon Mar 20 06:00:20 2006 +0000
-+++ b/arch/i386/kernel/entry.S Fri Mar 31 17:01:35 2006 +0100
-@@ -406,7 +406,7 @@ ENTRY(irq_entries_start)
- ENTRY(irq_entries_start)
- .rept NR_IRQS
- ALIGN
--1: pushl $vector-256
-+1: pushl $~(vector)
- jmp common_interrupt
- .data
- .long 1b
-@@ -423,7 +423,7 @@ common_interrupt:
-
- #define BUILD_INTERRUPT(name, nr) \
- ENTRY(name) \
-- pushl $nr-256; \
-+ pushl $~(nr); \
- SAVE_ALL \
- movl %esp,%eax; \
- call smp_/**/name; \
-diff -r 7d239c83edea arch/i386/kernel/irq.c
---- a/arch/i386/kernel/irq.c Mon Mar 20 06:00:20 2006 +0000
-+++ b/arch/i386/kernel/irq.c Fri Mar 31 17:01:35 2006 +0100
-@@ -53,8 +53,8 @@ static union irq_ctx *softirq_ctx[NR_CPU
- */
- fastcall unsigned int do_IRQ(struct pt_regs *regs)
- {
-- /* high bits used in ret_from_ code */
-- int irq = regs->orig_eax & 0xff;
-+ /* high bit used in ret_from_ code */
-+ int irq = ~regs->orig_eax;
- #ifdef CONFIG_4KSTACKS
- union irq_ctx *curctx, *irqctx;
- u32 *isp;
-diff -r 7d239c83edea arch/x86_64/kernel/entry.S
---- a/arch/x86_64/kernel/entry.S Mon Mar 20 06:00:20 2006 +0000
-+++ b/arch/x86_64/kernel/entry.S Fri Mar 31 17:01:35 2006 +0100
-@@ -609,7 +609,7 @@ retint_kernel:
- */
- .macro apicinterrupt num,func
- INTR_FRAME
-- pushq $\num-256
-+ pushq $~(\num)
- CFI_ADJUST_CFA_OFFSET 8
- interrupt \func
- jmp ret_from_intr
-diff -r 7d239c83edea arch/x86_64/kernel/irq.c
---- a/arch/x86_64/kernel/irq.c Mon Mar 20 06:00:20 2006 +0000
-+++ b/arch/x86_64/kernel/irq.c Fri Mar 31 17:01:35 2006 +0100
-@@ -96,8 +96,8 @@ skip:
- */
- asmlinkage unsigned int do_IRQ(struct pt_regs *regs)
- {
-- /* high bits used in ret_from_ code */
-- unsigned irq = regs->orig_rax & 0xff;
-+ /* high bit used in ret_from_ code */
-+ unsigned irq = ~regs->orig_rax;
-
- exit_idle();
- irq_enter();
-diff -r 7d239c83edea arch/x86_64/kernel/smp.c
---- a/arch/x86_64/kernel/smp.c Mon Mar 20 06:00:20 2006 +0000
-+++ b/arch/x86_64/kernel/smp.c Fri Mar 31 17:01:35 2006 +0100
-@@ -135,10 +135,10 @@ asmlinkage void smp_invalidate_interrupt
-
- cpu = smp_processor_id();
- /*
-- * orig_rax contains the interrupt vector - 256.
-+ * orig_rax contains the negated interrupt vector.
- * Use that to determine where the sender put the data.
- */
-- sender = regs->orig_rax + 256 - INVALIDATE_TLB_VECTOR_START;
-+ sender = ~regs->orig_rax - INVALIDATE_TLB_VECTOR_START;
- f = &per_cpu(flush_state, sender);
-
- if (!cpu_isset(cpu, f->flush_cpumask))
-diff -r 7d239c83edea include/asm-x86_64/hw_irq.h
---- a/include/asm-x86_64/hw_irq.h Mon Mar 20 06:00:20 2006 +0000
-+++ b/include/asm-x86_64/hw_irq.h Fri Mar 31 17:01:35 2006 +0100
-@@ -127,7 +127,7 @@ __asm__( \
- __asm__( \
- "\n.p2align\n" \
- "IRQ" #nr "_interrupt:\n\t" \
-- "push $" #nr "-256 ; " \
-+ "push $~(" #nr ") ; " \
- "jmp common_interrupt");
-
- #if defined(CONFIG_X86_IO_APIC)
diff -r 44e5abbf333b -r ad5b833122a8 patches/linux-2.6.16/xenoprof-generic.patch
--- a/patches/linux-2.6.16/xenoprof-generic.patch Thu May 04 17:38:25
2006 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,384 +0,0 @@
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/buffer_sync.c
./drivers/oprofile/buffer_sync.c
---- ../pristine-linux-2.6.16/drivers/oprofile/buffer_sync.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/buffer_sync.c 2006-04-03 15:53:05.000000000 +0100
-@@ -6,6 +6,10 @@
- *
- * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
- *
-+ * Modified by Aravind Menon for Xen
-+ * These modifications are:
-+ * Copyright (C) 2005 Hewlett-Packard Co.
-+ *
- * This is the core of the buffer management. Each
- * CPU buffer is processed and entered into the
- * global event buffer. Such processing is necessary
-@@ -275,15 +279,24 @@ static void add_cpu_switch(int i)
- last_cookie = INVALID_COOKIE;
- }
-
--static void add_kernel_ctx_switch(unsigned int in_kernel)
-+static void add_cpu_mode_switch(unsigned int cpu_mode)
- {
- add_event_entry(ESCAPE_CODE);
-- if (in_kernel)
-- add_event_entry(KERNEL_ENTER_SWITCH_CODE);
-- else
-- add_event_entry(KERNEL_EXIT_SWITCH_CODE);
-+ switch (cpu_mode) {
-+ case CPU_MODE_USER:
-+ add_event_entry(USER_ENTER_SWITCH_CODE);
-+ break;
-+ case CPU_MODE_KERNEL:
-+ add_event_entry(KERNEL_ENTER_SWITCH_CODE);
-+ break;
-+ case CPU_MODE_XEN:
-+ add_event_entry(XEN_ENTER_SWITCH_CODE);
-+ break;
-+ default:
-+ break;
-+ }
- }
--
-+
- static void
- add_user_ctx_switch(struct task_struct const * task, unsigned long cookie)
- {
-@@ -348,9 +361,9 @@ static int add_us_sample(struct mm_struc
- * for later lookup from userspace.
- */
- static int
--add_sample(struct mm_struct * mm, struct op_sample * s, int in_kernel)
-+add_sample(struct mm_struct * mm, struct op_sample * s, int cpu_mode)
- {
-- if (in_kernel) {
-+ if (cpu_mode >= CPU_MODE_KERNEL) {
- add_sample_entry(s->eip, s->event);
- return 1;
- } else if (mm) {
-@@ -496,7 +509,7 @@ void sync_buffer(int cpu)
- struct mm_struct *mm = NULL;
- struct task_struct * new;
- unsigned long cookie = 0;
-- int in_kernel = 1;
-+ int cpu_mode = 1;
- unsigned int i;
- sync_buffer_state state = sb_buffer_start;
- unsigned long available;
-@@ -513,12 +526,12 @@ void sync_buffer(int cpu)
- struct op_sample * s = &cpu_buf->buffer[cpu_buf->tail_pos];
-
- if (is_code(s->eip)) {
-- if (s->event <= CPU_IS_KERNEL) {
-+ if (s->event <= CPU_MODE_XEN) {
- /* kernel/userspace switch */
-- in_kernel = s->event;
-+ cpu_mode = s->event;
- if (state == sb_buffer_start)
- state = sb_sample_start;
-- add_kernel_ctx_switch(s->event);
-+ add_cpu_mode_switch(s->event);
- } else if (s->event == CPU_TRACE_BEGIN) {
- state = sb_bt_start;
- add_trace_begin();
-@@ -536,7 +549,7 @@ void sync_buffer(int cpu)
- }
- } else {
- if (state >= sb_bt_start &&
-- !add_sample(mm, s, in_kernel)) {
-+ !add_sample(mm, s, cpu_mode)) {
- if (state == sb_bt_start) {
- state = sb_bt_ignore;
-
atomic_inc(&oprofile_stats.bt_lost_no_mapping);
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/cpu_buffer.c
./drivers/oprofile/cpu_buffer.c
---- ../pristine-linux-2.6.16/drivers/oprofile/cpu_buffer.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/cpu_buffer.c 2006-04-03 15:53:05.000000000 +0100
-@@ -6,6 +6,10 @@
- *
- * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
- *
-+ * Modified by Aravind Menon for Xen
-+ * These modifications are:
-+ * Copyright (C) 2005 Hewlett-Packard Co.
-+ *
- * Each CPU has a local buffer that stores PC value/event
- * pairs. We also log context switches when we notice them.
- * Eventually each CPU's buffer is processed into the global
-@@ -58,7 +62,7 @@ int alloc_cpu_buffers(void)
- goto fail;
-
- b->last_task = NULL;
-- b->last_is_kernel = -1;
-+ b->last_cpu_mode = -1;
- b->tracing = 0;
- b->buffer_size = buffer_size;
- b->tail_pos = 0;
-@@ -114,7 +118,7 @@ void cpu_buffer_reset(struct oprofile_cp
- * collected will populate the buffer with proper
- * values to initialize the buffer
- */
-- cpu_buf->last_is_kernel = -1;
-+ cpu_buf->last_cpu_mode = -1;
- cpu_buf->last_task = NULL;
- }
-
-@@ -164,13 +168,13 @@ add_code(struct oprofile_cpu_buffer * bu
- * because of the head/tail separation of the writer and reader
- * of the CPU buffer.
- *
-- * is_kernel is needed because on some architectures you cannot
-+ * cpu_mode is needed because on some architectures you cannot
- * tell if you are in kernel or user space simply by looking at
-- * pc. We tag this in the buffer by generating kernel enter/exit
-- * events whenever is_kernel changes
-+ * pc. We tag this in the buffer by generating kernel/user (and xen)
-+ * enter events whenever cpu_mode changes
- */
- static int log_sample(struct oprofile_cpu_buffer * cpu_buf, unsigned long pc,
-- int is_kernel, unsigned long event)
-+ int cpu_mode, unsigned long event)
- {
- struct task_struct * task;
-
-@@ -181,16 +185,16 @@ static int log_sample(struct oprofile_cp
- return 0;
- }
-
-- is_kernel = !!is_kernel;
-+ WARN_ON(cpu_mode > CPU_MODE_XEN);
-
- task = current;
-
- /* notice a switch from user->kernel or vice versa */
-- if (cpu_buf->last_is_kernel != is_kernel) {
-- cpu_buf->last_is_kernel = is_kernel;
-- add_code(cpu_buf, is_kernel);
-+ if (cpu_buf->last_cpu_mode != cpu_mode) {
-+ cpu_buf->last_cpu_mode = cpu_mode;
-+ add_code(cpu_buf, cpu_mode);
- }
--
-+
- /* notice a task switch */
- if (cpu_buf->last_task != task) {
- cpu_buf->last_task = task;
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/cpu_buffer.h
./drivers/oprofile/cpu_buffer.h
---- ../pristine-linux-2.6.16/drivers/oprofile/cpu_buffer.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/cpu_buffer.h 2006-04-03 15:53:05.000000000 +0100
-@@ -36,7 +36,7 @@ struct oprofile_cpu_buffer {
- volatile unsigned long tail_pos;
- unsigned long buffer_size;
- struct task_struct * last_task;
-- int last_is_kernel;
-+ int last_cpu_mode;
- int tracing;
- struct op_sample * buffer;
- unsigned long sample_received;
-@@ -51,7 +51,9 @@ extern struct oprofile_cpu_buffer cpu_bu
- void cpu_buffer_reset(struct oprofile_cpu_buffer * cpu_buf);
-
- /* transient events for the CPU buffer -> event buffer */
--#define CPU_IS_KERNEL 1
--#define CPU_TRACE_BEGIN 2
-+#define CPU_MODE_USER 0
-+#define CPU_MODE_KERNEL 1
-+#define CPU_MODE_XEN 2
-+#define CPU_TRACE_BEGIN 3
-
- #endif /* OPROFILE_CPU_BUFFER_H */
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/event_buffer.h
./drivers/oprofile/event_buffer.h
---- ../pristine-linux-2.6.16/drivers/oprofile/event_buffer.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/event_buffer.h 2006-04-03 15:53:05.000000000 +0100
-@@ -29,11 +29,12 @@ void wake_up_buffer_waiter(void);
- #define CPU_SWITCH_CODE 2
- #define COOKIE_SWITCH_CODE 3
- #define KERNEL_ENTER_SWITCH_CODE 4
--#define KERNEL_EXIT_SWITCH_CODE 5
-+#define USER_ENTER_SWITCH_CODE 5
- #define MODULE_LOADED_CODE 6
- #define CTX_TGID_CODE 7
- #define TRACE_BEGIN_CODE 8
- #define TRACE_END_CODE 9
-+#define XEN_ENTER_SWITCH_CODE 10
-
- #define INVALID_COOKIE ~0UL
- #define NO_COOKIE 0UL
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/oprof.c
./drivers/oprofile/oprof.c
---- ../pristine-linux-2.6.16/drivers/oprofile/oprof.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/oprof.c 2006-04-03 15:53:05.000000000 +0100
-@@ -5,6 +5,10 @@
- * @remark Read the file COPYING
- *
- * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
-+ *
-+ * Modified by Aravind Menon for Xen
-+ * These modifications are:
-+ * Copyright (C) 2005 Hewlett-Packard Co.
- */
-
- #include <linux/kernel.h>
-@@ -19,7 +23,7 @@
- #include "cpu_buffer.h"
- #include "buffer_sync.h"
- #include "oprofile_stats.h"
--
-+
- struct oprofile_operations oprofile_ops;
-
- unsigned long oprofile_started;
-@@ -33,6 +37,17 @@ static DECLARE_MUTEX(start_sem);
- */
- static int timer = 0;
-
-+extern unsigned int adomains;
-+extern int active_domains[MAX_OPROF_DOMAINS];
-+
-+int oprofile_set_active(void)
-+{
-+ if (oprofile_ops.set_active)
-+ return oprofile_ops.set_active(active_domains, adomains);
-+
-+ return -EINVAL;
-+}
-+
- int oprofile_setup(void)
- {
- int err;
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/oprof.h
./drivers/oprofile/oprof.h
---- ../pristine-linux-2.6.16/drivers/oprofile/oprof.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/oprof.h 2006-04-03 15:53:05.000000000 +0100
-@@ -35,5 +35,7 @@ void oprofile_create_files(struct super_
- void oprofile_timer_init(struct oprofile_operations * ops);
-
- int oprofile_set_backtrace(unsigned long depth);
-+
-+int oprofile_set_active(void);
-
- #endif /* OPROF_H */
-diff -pruN ../pristine-linux-2.6.16/drivers/oprofile/oprofile_files.c
./drivers/oprofile/oprofile_files.c
---- ../pristine-linux-2.6.16/drivers/oprofile/oprofile_files.c 2006-03-20
05:53:29.000000000 +0000
-+++ ./drivers/oprofile/oprofile_files.c 2006-04-03 15:53:05.000000000
+0100
-@@ -5,15 +5,21 @@
- * @remark Read the file COPYING
- *
- * @author John Levon <levon@xxxxxxxxxxxxxxxxx>
-+ *
-+ * Modified by Aravind Menon for Xen
-+ * These modifications are:
-+ * Copyright (C) 2005 Hewlett-Packard Co.
- */
-
- #include <linux/fs.h>
- #include <linux/oprofile.h>
-+#include <asm/uaccess.h>
-+#include <linux/ctype.h>
-
- #include "event_buffer.h"
- #include "oprofile_stats.h"
- #include "oprof.h"
--
-+
- unsigned long fs_buffer_size = 131072;
- unsigned long fs_cpu_buffer_size = 8192;
- unsigned long fs_buffer_watershed = 32768; /* FIXME: tune */
-@@ -117,11 +123,79 @@ static ssize_t dump_write(struct file *
- static struct file_operations dump_fops = {
- .write = dump_write,
- };
--
-+
-+#define TMPBUFSIZE 512
-+
-+unsigned int adomains = 0;
-+long active_domains[MAX_OPROF_DOMAINS];
-+
-+static ssize_t adomain_write(struct file * file, char const __user * buf,
-+ size_t count, loff_t * offset)
-+{
-+ char tmpbuf[TMPBUFSIZE];
-+ char * startp = tmpbuf;
-+ char * endp = tmpbuf;
-+ int i;
-+ unsigned long val;
-+
-+ if (*offset)
-+ return -EINVAL;
-+ if (!count)
-+ return 0;
-+ if (count > TMPBUFSIZE - 1)
-+ return -EINVAL;
-+
-+ memset(tmpbuf, 0x0, TMPBUFSIZE);
-+
-+ if (copy_from_user(tmpbuf, buf, count))
-+ return -EFAULT;
-+
-+ for (i = 0; i < MAX_OPROF_DOMAINS; i++)
-+ active_domains[i] = -1;
-+ adomains = 0;
-+
-+ while (1) {
-+ val = simple_strtol(startp, &endp, 0);
-+ if (endp == startp)
-+ break;
-+ while (ispunct(*endp))
-+ endp++;
-+ active_domains[adomains++] = val;
-+ if (adomains >= MAX_OPROF_DOMAINS)
-+ break;
-+ startp = endp;
-+ }
-+ if (oprofile_set_active())
-+ return -EINVAL;
-+ return count;
-+}
-+
-+static ssize_t adomain_read(struct file * file, char __user * buf,
-+ size_t count, loff_t * offset)
-+{
-+ char tmpbuf[TMPBUFSIZE];
-+ size_t len = 0;
-+ int i;
-+ /* This is all screwed up if we run out of space */
-+ for (i = 0; i < adomains; i++)
-+ len += snprintf(tmpbuf + len, TMPBUFSIZE - len,
-+ "%u ", (unsigned int)active_domains[i]);
-+ len += snprintf(tmpbuf + len, TMPBUFSIZE - len, "\n");
-+ return simple_read_from_buffer((void __user *)buf, count,
-+ offset, tmpbuf, len);
-+}
-+
-+
-+static struct file_operations active_domain_ops = {
-+ .read = adomain_read,
-+ .write = adomain_write,
-+};
-+
- void oprofile_create_files(struct super_block * sb, struct dentry * root)
- {
- oprofilefs_create_file(sb, root, "enable", &enable_fops);
- oprofilefs_create_file_perm(sb, root, "dump", &dump_fops, 0666);
-+ oprofilefs_create_file(sb, root, "active_domains", &active_domain_ops);
- oprofilefs_create_file(sb, root, "buffer", &event_buffer_fops);
- oprofilefs_create_ulong(sb, root, "buffer_size", &fs_buffer_size);
- oprofilefs_create_ulong(sb, root, "buffer_watershed",
&fs_buffer_watershed);
-diff -pruN ../pristine-linux-2.6.16/include/linux/oprofile.h
./include/linux/oprofile.h
---- ../pristine-linux-2.6.16/include/linux/oprofile.h 2006-03-20
05:53:29.000000000 +0000
-+++ ./include/linux/oprofile.h 2006-04-03 15:53:05.000000000 +0100
-@@ -16,6 +16,8 @@
- #include <linux/types.h>
- #include <linux/spinlock.h>
- #include <asm/atomic.h>
-+
-+#include <xen/interface/xenoprof.h>
-
- struct super_block;
- struct dentry;
-@@ -27,6 +29,8 @@ struct oprofile_operations {
- /* create any necessary configuration files in the oprofile fs.
- * Optional. */
- int (*create_files)(struct super_block * sb, struct dentry * root);
-+ /* setup active domains with Xen */
-+ int (*set_active)(int *active_domains, unsigned int adomains);
- /* Do any necessary interrupt setup. Optional. */
- int (*setup)(void);
- /* Do any necessary interrupt shutdown. Optional. */
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