Messages in this thread Patch in this message | | | From | Zhang Rui <> | Subject | [PATCH 2/3] perf/x86/rapl: Use standard Energy Unit for SPR Dram RAPL domain | Date | Sat, 24 Sep 2022 13:47:37 +0800 |
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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> Tested-by: Wang Wendy <wendy.wang@intel.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> --- arch/x86/events/rapl.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/x86/events/rapl.c b/arch/x86/events/rapl.c index 77e3a47af5ad..7d8db681880d 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: -- 2.25.1
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