perf/x86/intel/uncore: Fix PCU filter setup for Sandy/Ivy/Haswell EP

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The PCU frequency band filters use 8 bit each in a register.
When setting up the value the shift value was not correctly
scaled, which resulted in all filters except for band 0 to
be zero. Fix the scaling.

This allows to correctly monitor multiple uncore frequency bands.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/1409872109-31645-5-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Andi Kleen 2014-09-04 16:08:29 -07:00 • committed by Ingo Molnar

parent 7e96ae1a89

commit b10fc1c3e3

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c

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