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perf/x86/msr: Add AMD IRPERF (Instructions Retired) performance counter

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AMD Zeppelin (Family 17h, Model 00h) introduces an instructions
retired performance counter which is indicated by
CPUID.8000_0008H:EBX[1]. A dedicated Instructions Retired MSR register
(MSR 0xC000_000E9) increments once for every instruction retired.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Jacob Shin <jacob.w.shin@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <rric@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1454056197-5893-3-git-send-email-ray.huang@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Huang Rui 2016-01-29 16:29:57 +08:00 committed by Ingo Molnar
parent 8a22426184
commit aaf248848d
3 changed files with 23 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
arch/x86/events/msr.c
View File

@ -7,6 +7,7 @@ enum perf_msr_id {
PERF_MSR_PPERF = 3,
PERF_MSR_SMI = 4,
PERF_MSR_PTSC = 5,
PERF_MSR_IRPERF = 6,
PERF_MSR_EVENT_MAX,
};
@ -21,6 +22,11 @@ static bool test_ptsc(int idx)
return boot_cpu_has(X86_FEATURE_PTSC);
}
static bool test_irperf(int idx)
{
return boot_cpu_has(X86_FEATURE_IRPERF);
}
static bool test_intel(int idx)
{
if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL ||
@ -75,20 +81,22 @@ struct perf_msr {
bool (*test)(int idx);
};
PMU_EVENT_ATTR_STRING(tsc, evattr_tsc, "event=0x00");
PMU_EVENT_ATTR_STRING(aperf, evattr_aperf, "event=0x01");
PMU_EVENT_ATTR_STRING(mperf, evattr_mperf, "event=0x02");
PMU_EVENT_ATTR_STRING(pperf, evattr_pperf, "event=0x03");
PMU_EVENT_ATTR_STRING(smi, evattr_smi, "event=0x04");
PMU_EVENT_ATTR_STRING(ptsc, evattr_ptsc, "event=0x05");
PMU_EVENT_ATTR_STRING(tsc, evattr_tsc, "event=0x00");
PMU_EVENT_ATTR_STRING(aperf, evattr_aperf, "event=0x01");
PMU_EVENT_ATTR_STRING(mperf, evattr_mperf, "event=0x02");
PMU_EVENT_ATTR_STRING(pperf, evattr_pperf, "event=0x03");
PMU_EVENT_ATTR_STRING(smi, evattr_smi, "event=0x04");
PMU_EVENT_ATTR_STRING(ptsc, evattr_ptsc, "event=0x05");
PMU_EVENT_ATTR_STRING(irperf, evattr_irperf, "event=0x06");
static struct perf_msr msr[] = {
[PERF_MSR_TSC] = { 0, &evattr_tsc, NULL, },
[PERF_MSR_APERF] = { MSR_IA32_APERF, &evattr_aperf, test_aperfmperf, },
[PERF_MSR_MPERF] = { MSR_IA32_MPERF, &evattr_mperf, test_aperfmperf, },
[PERF_MSR_PPERF] = { MSR_PPERF, &evattr_pperf, test_intel, },
[PERF_MSR_SMI] = { MSR_SMI_COUNT, &evattr_smi, test_intel, },
[PERF_MSR_TSC] = { 0, &evattr_tsc, NULL, },
[PERF_MSR_APERF] = { MSR_IA32_APERF, &evattr_aperf, test_aperfmperf, },
[PERF_MSR_MPERF] = { MSR_IA32_MPERF, &evattr_mperf, test_aperfmperf, },
[PERF_MSR_PPERF] = { MSR_PPERF, &evattr_pperf, test_intel, },
[PERF_MSR_SMI] = { MSR_SMI_COUNT, &evattr_smi, test_intel, },
[PERF_MSR_PTSC] = { MSR_F15H_PTSC, &evattr_ptsc, test_ptsc, },
[PERF_MSR_IRPERF] = { MSR_F17H_IRPERF, &evattr_irperf, test_irperf, },
};
static struct attribute *events_attrs[PERF_MSR_EVENT_MAX + 1] = {

1
arch/x86/include/asm/cpufeatures.h
View File

@ -251,6 +251,7 @@
/* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */
#define X86_FEATURE_CLZERO (13*32+0) /* CLZERO instruction */
#define X86_FEATURE_IRPERF (13*32+1) /* Instructions Retired Count */
/* Thermal and Power Management Leaf, CPUID level 0x00000006 (eax), word 14 */
#define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */

3
arch/x86/include/asm/msr-index.h
View File

@ -313,6 +313,9 @@
#define MSR_AMD64_IBSOPDATA4 0xc001103d
#define MSR_AMD64_IBS_REG_COUNT_MAX 8 /* includes MSR_AMD64_IBSBRTARGET */
/* Fam 17h MSRs */
#define MSR_F17H_IRPERF 0xc00000e9
/* Fam 16h MSRs */
#define MSR_F16H_L2I_PERF_CTL 0xc0010230
#define MSR_F16H_L2I_PERF_CTR 0xc0010231