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ARM: pmu: remove unused reservation mechanism

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The PMU reservation mechanism was originally intended to allow OProfile
and perf-events to co-ordinate over access to the CPU PMU. Since then,
OProfile for ARM has moved to using perf as its backend, so the
reservation code is no longer used.

This patch removes the reservation code for the CPU PMU on ARM.

Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon
2012-07-28 16:27:03 +01:00
parent 50243efde0
commit f0d1bc4795
6 changed files with 1 additions and 87 deletions
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8
arch/arm/kernel/perf_event.c
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@@ -377,7 +377,6 @@ armpmu_release_hardware(struct arm_pmu *armpmu)
}
pm_runtime_put_sync(&pmu_device->dev);
release_pmu(armpmu->type);
}
static int
@@ -391,12 +390,6 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
if (!pmu_device)
return -ENODEV;
err = reserve_pmu(armpmu->type);
if (err) {
pr_warning("unable to reserve pmu\n");
return err;
}
plat = dev_get_platdata(&pmu_device->dev);
if (plat && plat->handle_irq)
handle_irq = armpmu_platform_irq;
@@ -706,7 +699,6 @@ static void __init cpu_pmu_init(struct arm_pmu *armpmu)
raw_spin_lock_init(&events->pmu_lock);
}
armpmu->get_hw_events = armpmu_get_cpu_events;
armpmu->type = ARM_PMU_DEVICE_CPU;
}
/*