redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

perf/x86/rapl: Add AMD Fam17h RAPL support

Browse source 
This patch enables AMD Fam17h RAPL support for the Package level metric.
The support is as per AMD Fam17h Model31h (Zen2) and model 00-ffh (Zen1) PPR.

The same output is available via the energy-pkg pseudo event:

  $ perf stat -a -I 1000 --per-socket -e power/energy-pkg/

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200527224659.206129-6-eranian@google.com
This commit is contained in:
Stephane Eranian 2020-05-27 15:46:59 -07:00 committed by Ingo Molnar
parent 4c953f8794
commit 5cde265384
2 changed files with 21 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
arch/x86/events/rapl.c
View file

@ -537,6 +537,16 @@ static struct perf_msr intel_rapl_msrs[] = {
[PERF_RAPL_PSYS] = { MSR_PLATFORM_ENERGY_STATUS, &rapl_events_psys_group, test_msr },
};
/*
* Force to PERF_RAPL_MAX size due to:
* - perf_msr_probe(PERF_RAPL_MAX)
* - want to use same event codes across both architectures
*/
static struct perf_msr amd_rapl_msrs[PERF_RAPL_MAX] = {
[PERF_RAPL_PKG] = { MSR_AMD_PKG_ENERGY_STATUS, &rapl_events_pkg_group, test_msr },
};
static int rapl_cpu_offline(unsigned int cpu)
{
struct rapl_pmu *pmu = cpu_to_rapl_pmu(cpu);
@ -740,6 +750,13 @@ static struct rapl_model model_skl = {
.rapl_msrs = intel_rapl_msrs,
};
static struct rapl_model model_amd_fam17h = {
.events = BIT(PERF_RAPL_PKG),
.apply_quirk = false,
.msr_power_unit = MSR_AMD_RAPL_POWER_UNIT,
.rapl_msrs = amd_rapl_msrs,
};
static const struct x86_cpu_id rapl_model_match[] __initconst = {
X86_MATCH_INTEL_FAM6_MODEL(SANDYBRIDGE, &model_snb),
X86_MATCH_INTEL_FAM6_MODEL(SANDYBRIDGE_X, &model_snbep),
@ -770,6 +787,7 @@ static const struct x86_cpu_id rapl_model_match[] __initconst = {
X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, &model_hsx),
X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, &model_skl),
X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &model_skl),
X86_MATCH_VENDOR_FAM(AMD, 0x17, &model_amd_fam17h),
{},
};
MODULE_DEVICE_TABLE(x86cpu, rapl_model_match);

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

@ -301,6 +301,9 @@
#define MSR_PP1_ENERGY_STATUS 0x00000641
#define MSR_PP1_POLICY 0x00000642
#define MSR_AMD_PKG_ENERGY_STATUS 0xc001029b
#define MSR_AMD_RAPL_POWER_UNIT 0xc0010299
/* Config TDP MSRs */
#define MSR_CONFIG_TDP_NOMINAL 0x00000648
#define MSR_CONFIG_TDP_LEVEL_1 0x00000649