# HG changeset patch
# User Kevin Tian <kevin.tian@xxxxxxxxx>
# Date 1314800303 -3600
# Node ID 42d76c68b2bfbedee3e5f79d32344e14bce48b0f
# Parent 51983821efa4db4040ae1c5063a4404791597699
x86: add irq count for IPIs
such count is useful to assist decision make in cpuidle governor,
while w/o this patch only device interrupts through do_IRQ is
currently counted.
Signed-off-by: Kevin Tian <kevin.tian@xxxxxxxxx>
---
diff -r 51983821efa4 -r 42d76c68b2bf xen/arch/x86/apic.c
--- a/xen/arch/x86/apic.c Wed Aug 31 15:17:45 2011 +0100
+++ b/xen/arch/x86/apic.c Wed Aug 31 15:18:23 2011 +0100
@@ -1332,6 +1332,7 @@
struct cpu_user_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
perfc_incr(apic_timer);
+ this_cpu(irq_count)++;
raise_softirq(TIMER_SOFTIRQ);
set_irq_regs(old_regs);
}
@@ -1353,6 +1354,7 @@
unsigned long v;
struct cpu_user_regs *old_regs = set_irq_regs(regs);
+ this_cpu(irq_count)++;
irq_enter();
/*
@@ -1388,6 +1390,7 @@
unsigned long v, v1;
struct cpu_user_regs *old_regs = set_irq_regs(regs);
+ this_cpu(irq_count)++;
irq_enter();
/* First tickle the hardware, only then report what went on. -- REW */
v = apic_read(APIC_ESR);
@@ -1419,6 +1422,7 @@
{
struct cpu_user_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
+ this_cpu(irq_count)++;
hvm_do_pmu_interrupt(regs);
set_irq_regs(old_regs);
}
diff -r 51983821efa4 -r 42d76c68b2bf xen/arch/x86/cpu/mcheck/mce_intel.c
--- a/xen/arch/x86/cpu/mcheck/mce_intel.c Wed Aug 31 15:17:45 2011 +0100
+++ b/xen/arch/x86/cpu/mcheck/mce_intel.c Wed Aug 31 15:18:23 2011 +0100
@@ -77,6 +77,7 @@
fastcall void smp_thermal_interrupt(struct cpu_user_regs *regs)
{
struct cpu_user_regs *old_regs = set_irq_regs(regs);
+ this_cpu(irq_count)++;
irq_enter();
vendor_thermal_interrupt(regs);
irq_exit();
@@ -1147,6 +1148,7 @@
struct cpu_user_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
+ this_cpu(irq_count)++;
irq_enter();
mctc = mcheck_mca_logout(
diff -r 51983821efa4 -r 42d76c68b2bf xen/arch/x86/io_apic.c
--- a/xen/arch/x86/io_apic.c Wed Aug 31 15:17:45 2011 +0100
+++ b/xen/arch/x86/io_apic.c Wed Aug 31 15:18:23 2011 +0100
@@ -441,6 +441,7 @@
struct cpu_user_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
+ this_cpu(irq_count)++;
irq_enter();
me = smp_processor_id();
diff -r 51983821efa4 -r 42d76c68b2bf xen/arch/x86/smp.c
--- a/xen/arch/x86/smp.c Wed Aug 31 15:17:45 2011 +0100
+++ b/xen/arch/x86/smp.c Wed Aug 31 15:18:23 2011 +0100
@@ -221,6 +221,7 @@
{
ack_APIC_irq();
perfc_incr(ipis);
+ this_cpu(irq_count)++;
irq_enter();
if ( !__sync_local_execstate() ||
(flush_flags & (FLUSH_TLB_GLOBAL | FLUSH_CACHE)) )
@@ -385,6 +386,7 @@
struct cpu_user_regs *old_regs = set_irq_regs(regs);
ack_APIC_irq();
perfc_incr(ipis);
+ this_cpu(irq_count)++;
set_irq_regs(old_regs);
}
@@ -421,6 +423,7 @@
ack_APIC_irq();
perfc_incr(ipis);
+ this_cpu(irq_count)++;
__smp_call_function_interrupt();
set_irq_regs(old_regs);
}
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