tree 8fb318ab6ffe5b05b691e452d85469ff7a187e04
parent 31bee4cf0e74e9c962d481a68452debaf45ed4ac
author Mark Rutland <mark.rutland@arm.com> 1305620138 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1305927557 +0100

ARM: 6902/1: perf: Remove erroneous check on active_events

When initialising a PMU, there is a check to protect against races with
other CPUs filling all of the available event slots. Since armpmu_add
checks that an event can be scheduled, we do not need to do this at
initialisation time. Furthermore the current code is broken because it
assumes that atomic_inc_not_zero will unconditionally increment
active_counts and then tries to decrement it again on failure.

This patch removes the broken, redundant code.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>