ARM: 6071/1: perf-events: allow modules to query the number of hardware counters

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For OProfile to initialise oprofilefs correctly, it needs to know
the number of counters it can represent.

This patch adds a function to the ARM perf-events backend to return
the number of hardware counters available for the current PMU.

Cc: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Will Deacon 2010-04-30 11:34:26 +01:00 • committed by Russell King

parent 49e6a32f2f

commit 929f519944

2 changed files with 15 additions and 0 deletions

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3

arch/arm/include/asm/perf_event.h

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12

arch/arm/kernel/perf_event.c

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