[RFC PATCH v2 1/9] arm: avoid using on_each_cpu hard coded ret value

[Gilad Ben-Yossef]

on_each_cpu always returns a hard coded return code of zero.

Removing all tests based on this return value saves run time
cycles for compares and code bloat for branches.

Signed-off-by: Gilad Ben-Yossef <gilad at benyossef.com>
Acked-by: Peter Zijlstra <a.p.zijlstra at chello.nl>
Reviewed-by: Michal Nazarewicz <mina86 at mina86.com>
CC: Will Deacon <will.deacon at arm.com>
CC: Peter Zijlstra <a.p.zijlstra at chello.nl>
CC: Paul Mackerras <paulus at samba.org>
CC: Ingo Molnar <mingo at elte.hu>
CC: Arnaldo Carvalho de Melo <acme at ghostprotocols.net>
CC: Russell King <linux at arm.linux.org.uk>
CC: Grant Likely <grant.likely at secretlab.ca>
CC: Rob Herring <rob.herring at calxeda.com>
CC: linux-arm-kernel at lists.infradead.org
CC: devicetree-discuss at lists.ozlabs.org
---
 arch/arm/kernel/perf_event.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 5bb91bf..6e9acb7 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -616,7 +616,7 @@ static int __init
 cpu_pmu_reset(void)
 {
 	if (cpu_pmu && cpu_pmu->reset)
-		return on_each_cpu(cpu_pmu->reset, NULL, 1);
+		on_each_cpu(cpu_pmu->reset, NULL, 1);
 	return 0;
 }
 arch_initcall(cpu_pmu_reset);
-- 
1.7.0.4