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Stephane Eranian authored
This patch fixes a bug introduced by: 24223657 ("perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU") The rdmsrl_safe() function returns 0 on success. The current code was failing to detect the RAPL PMU on real hardware (missing /sys/devices/power) because the return value of rdmsrl_safe() was misinterpreted. Signed-off-by:
Stephane Eranian <eranian@google.com> Acked-by:
Borislav Petkov <bp@suse.de> Acked-by:
Venkatesh Srinivas <venkateshs@google.com> Cc: peterz@infradead.org Cc: zheng.z.yan@intel.com Link: http://lkml.kernel.org/r/20140423170418.GA12767@quadSigned-off-by:
Ingo Molnar <mingo@kernel.org>
9f7ff893