# HG changeset patch
# User Jacob Shin <jacob.shin@xxxxxxx>
# Date 1304524596 18000
# Node ID 349a9e537940f8bc340a2055cb5068b58809042f
# Parent eeb1bb50ba13c36e44d4994e01d82d294f3c584a
xenoprof: Add support for AMD Family 15h processors
AMD Family 15h CPU mirrors legacy K7 performance monitor counters to
a new location, and adds 2 new counters. This patch updates xenoprof
to take advantage of the new counters.
Signed-off-by: Jacob Shin <jacob.shin@xxxxxxx>
diff -r eeb1bb50ba13 -r 349a9e537940 xen/arch/x86/oprofile/nmi_int.c
--- a/xen/arch/x86/oprofile/nmi_int.c Tue May 03 17:26:33 2011 -0500
+++ b/xen/arch/x86/oprofile/nmi_int.c Wed May 04 10:56:36 2011 -0500
@@ -30,7 +30,7 @@ struct op_counter_config counter_config[
struct op_counter_config counter_config[OP_MAX_COUNTER];
struct op_ibs_config ibs_config;
-static struct op_x86_model_spec const *__read_mostly model;
+struct op_x86_model_spec const *__read_mostly model;
static struct op_msrs cpu_msrs[NR_CPUS];
static unsigned long saved_lvtpc[NR_CPUS];
@@ -446,7 +446,7 @@ static int __init nmi_init(void)
cpu_type = "x86-64/family14h";
break;
case 0x15:
- model = &op_athlon_spec;
+ model = &op_fam15h_spec;
cpu_type = "x86-64/family15h";
break;
}
diff -r eeb1bb50ba13 -r 349a9e537940 xen/arch/x86/oprofile/op_model_athlon.c
--- a/xen/arch/x86/oprofile/op_model_athlon.c Tue May 03 17:26:33 2011 -0500
+++ b/xen/arch/x86/oprofile/op_model_athlon.c Wed May 04 10:56:36 2011 -0500
@@ -24,8 +24,13 @@
#include "op_x86_model.h"
#include "op_counter.h"
-#define NUM_COUNTERS 4
-#define NUM_CONTROLS 4
+#define K7_NUM_COUNTERS 4
+#define K7_NUM_CONTROLS 4
+
+#define FAM15H_NUM_COUNTERS 6
+#define FAM15H_NUM_CONTROLS 6
+
+#define MAX_COUNTERS FAM15H_NUM_COUNTERS
#define CTR_READ(msr_content,msrs,c) do {rdmsrl(msrs->counters[(c)].addr,
(msr_content));} while (0)
#define CTR_WRITE(l,msrs,c) do {wrmsr(msrs->counters[(c)].addr, -(unsigned
int)(l), -1);} while (0)
@@ -44,9 +49,10 @@
#define CTRL_SET_HOST_ONLY(val, h) (val |= ((h & 0x1ULL) << 41))
#define CTRL_SET_GUEST_ONLY(val, h) (val |= ((h & 0x1ULL) << 40))
-static unsigned long reset_value[NUM_COUNTERS];
+static unsigned long reset_value[MAX_COUNTERS];
extern char svm_stgi_label[];
+extern struct op_x86_model_spec const *__read_mostly model;
#ifdef CONFIG_X86_64
u32 ibs_caps = 0;
@@ -175,26 +181,44 @@ static void athlon_fill_in_addresses(str
msrs->controls[3].addr = MSR_K7_EVNTSEL3;
}
-
+static void fam15h_fill_in_addresses(struct op_msrs * const msrs)
+{
+ msrs->counters[0].addr = MSR_FAM15H_PERFCTR0;
+ msrs->counters[1].addr = MSR_FAM15H_PERFCTR1;
+ msrs->counters[2].addr = MSR_FAM15H_PERFCTR2;
+ msrs->counters[3].addr = MSR_FAM15H_PERFCTR3;
+ msrs->counters[4].addr = MSR_FAM15H_PERFCTR4;
+ msrs->counters[5].addr = MSR_FAM15H_PERFCTR5;
+
+ msrs->controls[0].addr = MSR_FAM15H_EVNTSEL0;
+ msrs->controls[1].addr = MSR_FAM15H_EVNTSEL1;
+ msrs->controls[2].addr = MSR_FAM15H_EVNTSEL2;
+ msrs->controls[3].addr = MSR_FAM15H_EVNTSEL3;
+ msrs->controls[4].addr = MSR_FAM15H_EVNTSEL4;
+ msrs->controls[5].addr = MSR_FAM15H_EVNTSEL5;
+}
+
static void athlon_setup_ctrs(struct op_msrs const * const msrs)
{
uint64_t msr_content;
int i;
+ unsigned int const nr_ctrs = model->num_counters;
+ unsigned int const nr_ctrls = model->num_controls;
/* clear all counters */
- for (i = 0 ; i < NUM_CONTROLS; ++i) {
+ for (i = 0 ; i < nr_ctrls; ++i) {
CTRL_READ(msr_content, msrs, i);
CTRL_CLEAR(msr_content);
CTRL_WRITE(msr_content, msrs, i);
}
/* avoid a false detection of ctr overflows in NMI handler */
- for (i = 0; i < NUM_COUNTERS; ++i) {
+ for (i = 0; i < nr_ctrs; ++i) {
CTR_WRITE(1, msrs, i);
}
/* enable active counters */
- for (i = 0; i < NUM_COUNTERS; ++i) {
+ for (i = 0; i < nr_ctrs; ++i) {
if (counter_config[i].enabled) {
reset_value[i] = counter_config[i].count;
@@ -300,6 +324,7 @@ static int athlon_check_ctrs(unsigned in
int mode = 0;
struct vcpu *v = current;
struct cpu_user_regs *guest_regs = guest_cpu_user_regs();
+ unsigned int const nr_ctrs = model->num_counters;
if (!guest_mode(regs) &&
(regs->eip == (unsigned long)svm_stgi_label)) {
@@ -312,7 +337,7 @@ static int athlon_check_ctrs(unsigned in
mode = xenoprofile_get_mode(v, regs);
}
- for (i = 0 ; i < NUM_COUNTERS; ++i) {
+ for (i = 0 ; i < nr_ctrs; ++i) {
CTR_READ(msr_content, msrs, i);
if (CTR_OVERFLOWED(msr_content)) {
xenoprof_log_event(current, regs, eip, mode, i);
@@ -373,7 +398,8 @@ static void athlon_start(struct op_msrs
{
uint64_t msr_content;
int i;
- for (i = 0 ; i < NUM_COUNTERS ; ++i) {
+ unsigned int const nr_ctrs = model->num_counters;
+ for (i = 0 ; i < nr_ctrs ; ++i) {
if (reset_value[i]) {
CTRL_READ(msr_content, msrs, i);
CTRL_SET_ACTIVE(msr_content);
@@ -401,10 +427,11 @@ static void athlon_stop(struct op_msrs c
{
uint64_t msr_content;
int i;
+ unsigned int const nr_ctrs = model->num_counters;
/* Subtle: stop on all counters to avoid race with
* setting our pm callback */
- for (i = 0 ; i < NUM_COUNTERS ; ++i) {
+ for (i = 0 ; i < nr_ctrs ; ++i) {
CTRL_READ(msr_content, msrs, i);
CTRL_SET_INACTIVE(msr_content);
CTRL_WRITE(msr_content, msrs, i);
@@ -512,11 +539,21 @@ void __init ibs_init(void)
#endif /* CONFIG_X86_64 */
struct op_x86_model_spec const op_athlon_spec = {
- .num_counters = NUM_COUNTERS,
- .num_controls = NUM_CONTROLS,
+ .num_counters = K7_NUM_COUNTERS,
+ .num_controls = K7_NUM_CONTROLS,
.fill_in_addresses = &athlon_fill_in_addresses,
.setup_ctrs = &athlon_setup_ctrs,
.check_ctrs = &athlon_check_ctrs,
.start = &athlon_start,
.stop = &athlon_stop
};
+
+struct op_x86_model_spec const op_fam15h_spec = {
+ .num_counters = FAM15H_NUM_COUNTERS,
+ .num_controls = FAM15H_NUM_CONTROLS,
+ .fill_in_addresses = &fam15h_fill_in_addresses,
+ .setup_ctrs = &athlon_setup_ctrs,
+ .check_ctrs = &athlon_check_ctrs,
+ .start = &athlon_start,
+ .stop = &athlon_stop
+};
diff -r eeb1bb50ba13 -r 349a9e537940 xen/arch/x86/oprofile/op_x86_model.h
--- a/xen/arch/x86/oprofile/op_x86_model.h Tue May 03 17:26:33 2011 -0500
+++ b/xen/arch/x86/oprofile/op_x86_model.h Wed May 04 10:56:36 2011 -0500
@@ -48,6 +48,7 @@ extern struct op_x86_model_spec const op
extern struct op_x86_model_spec const op_p4_spec;
extern struct op_x86_model_spec const op_p4_ht2_spec;
extern struct op_x86_model_spec const op_athlon_spec;
+extern struct op_x86_model_spec const op_fam15h_spec;
void arch_perfmon_setup_counters(void);
#endif /* OP_X86_MODEL_H */
diff -r eeb1bb50ba13 -r 349a9e537940 xen/include/asm-x86/msr-index.h
--- a/xen/include/asm-x86/msr-index.h Tue May 03 17:26:33 2011 -0500
+++ b/xen/include/asm-x86/msr-index.h Wed May 04 10:56:36 2011 -0500
@@ -223,6 +223,19 @@
#define MSR_K8_ENABLE_C1E 0xc0010055
#define MSR_K8_VM_CR 0xc0010114
#define MSR_K8_VM_HSAVE_PA 0xc0010117
+
+#define MSR_FAM15H_EVNTSEL0 0xc0010200
+#define MSR_FAM15H_PERFCTR0 0xc0010201
+#define MSR_FAM15H_EVNTSEL1 0xc0010202
+#define MSR_FAM15H_PERFCTR1 0xc0010203
+#define MSR_FAM15H_EVNTSEL2 0xc0010204
+#define MSR_FAM15H_PERFCTR2 0xc0010205
+#define MSR_FAM15H_EVNTSEL3 0xc0010206
+#define MSR_FAM15H_PERFCTR3 0xc0010207
+#define MSR_FAM15H_EVNTSEL4 0xc0010208
+#define MSR_FAM15H_PERFCTR4 0xc0010209
+#define MSR_FAM15H_EVNTSEL5 0xc001020a
+#define MSR_FAM15H_PERFCTR5 0xc001020b
#define MSR_K8_FEATURE_MASK 0xc0011004
#define MSR_K8_EXT_FEATURE_MASK 0xc0011005
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