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| author | Zhang Rui <rui.zhang@intel.com> | 2022-09-24 07:47:37 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-11-02 12:22:05 +0100 |
| commit | 80275ca9e525c198c7efe045c4a6cdb68a2ea763 (patch) | |
| tree | 8cfea5dd69341cffd026d6486d2b73e3f3cad325 /arch | |
| parent | perf/hw_breakpoint: test: Skip the test if dependencies unmet (diff) | |
| download | linux-80275ca9e525c198c7efe045c4a6cdb68a2ea763.tar.xz linux-80275ca9e525c198c7efe045c4a6cdb68a2ea763.zip | |
perf/x86/rapl: Use standard Energy Unit for SPR Dram RAPL domain
Intel Xeon servers used to use a fixed energy resolution (15.3uj) for
Dram RAPL domain. But on SPR, Dram RAPL domain follows the standard
energy resolution as described in MSR_RAPL_POWER_UNIT.
Remove the SPR Dram energy unit quirk.
Fixes: bcfd218b6679 ("perf/x86/rapl: Add support for Intel SPR platform")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Wang Wendy <wendy.wang@intel.com>
Link: https://lkml.kernel.org/r/20220924054738.12076-3-rui.zhang@intel.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/events/rapl.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c index fea544e5842a..a829492bca4c 100644 --- a/arch/x86/events/rapl.c +++ b/arch/x86/events/rapl.c @@ -619,12 +619,8 @@ static int rapl_check_hw_unit(struct rapl_model *rm) case RAPL_UNIT_QUIRK_INTEL_HSW: rapl_hw_unit[PERF_RAPL_RAM] = 16; break; - /* - * SPR shares the same DRAM domain energy unit as HSW, plus it - * also has a fixed energy unit for Psys domain. - */ + /* SPR uses a fixed energy unit for Psys domain. */ case RAPL_UNIT_QUIRK_INTEL_SPR: - rapl_hw_unit[PERF_RAPL_RAM] = 16; rapl_hw_unit[PERF_RAPL_PSYS] = 0; break; default: |