b6f78d3fba
In the RAPL ENERGY_COUNTER MSR, only the lower 32bits represent the energy counter. On previous platforms, the higher 32bits are reverved and always return Zero. But on Intel SapphireRapids platform, the higher 32bits are reused for other purpose and return non-zero value. Thus check the lower 32bits only for these ENERGY_COUTNER MSRs, to make sure the RAPL PMU events are not added erroneously when higher 32bits contain non-zero value. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20210204161816.12649-2-rui.zhang@intel.com |
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| .. | ||
| amd | ||
| intel | ||
| zhaoxin | ||
| core.c | ||
| Kconfig | ||
| Makefile | ||
| msr.c | ||
| perf_event.h | ||
| probe.c | ||
| probe.h | ||
| rapl.c | ||