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arm_pmu: simplify arm_pmu::handle_irq

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The arm_pmu::handle_irq() callback has the same prototype as a generic
IRQ handler, taking the IRQ number and a void pointer argument which it
must convert to an arm_pmu pointer.

This means that all arm_pmu::handle_irq() take an IRQ number they never
use, and all must explicitly cast the void pointer to an arm_pmu
pointer.

Instead, let's change arm_pmu::handle_irq to take an arm_pmu pointer,
allowing these casts to be removed. The redundant IRQ number parameter
is also removed.

Suggested-by: Hoeun Ryu <[email protected]>
Signed-off-by: Mark Rutland <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
This commit is contained in:
Mark Rutland 2018-05-10 11:35:15 +01:00 • committed by Will Deacon
commit 0788f1e973
6 changed files with 7 additions and 13 deletions
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2
drivers/perf/arm_pmu.c
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@ -339,7 +339,7 @@ static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
return IRQ_NONE;
start_clock = sched_clock();
ret = armpmu->handle_irq(irq, armpmu);
ret = armpmu->handle_irq(armpmu);
finish_clock = sched_clock();
perf_sample_event_took(finish_clock - start_clock);