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| author | Mark Rutland <mark.rutland@arm.com> | 2017-10-09 17:09:05 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-02-20 11:34:54 +0000 |
| commit | 167e61438da0664cab87c825a6c0cb83510d578e (patch) | |
| tree | 3b05ff3a90e1c171d6aaa98d9bfa3ef33168c8a2 /drivers/perf/arm_pmu.c | |
| parent | 84b4be57ae17f8c0b3c1d8629e10f23910838fd7 (diff) | |
| download | linux-167e61438da0664cab87c825a6c0cb83510d578e.tar.gz linux-167e61438da0664cab87c825a6c0cb83510d578e.tar.bz2 linux-167e61438da0664cab87c825a6c0cb83510d578e.zip | |
arm_pmu: acpi: request IRQs up-front
We can't request IRQs in atomic context, so for ACPI systems we'll have
to request them up-front, and later associate them with CPUs.
This patch reorganises the arm_pmu code to do so. As we no longer have
the arm_pmu structure at probe time, a number of prototypes need to be
adjusted, requiring changes to the common arm_pmu code and arm_pmu
platform code.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf/arm_pmu.c')
| -rw-r--r-- | drivers/perf/arm_pmu.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index 2b2af35db1b6..0c2ed11c0603 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -534,7 +534,7 @@ static int armpmu_count_irq_users(const int irq) return count; } -void armpmu_free_cpu_irq(int irq, int cpu) +void armpmu_free_irq(int irq, int cpu) { if (per_cpu(cpu_irq, cpu) == 0) return; @@ -549,15 +549,7 @@ void armpmu_free_cpu_irq(int irq, int cpu) per_cpu(cpu_irq, cpu) = 0; } -void armpmu_free_irq(struct arm_pmu *armpmu, int cpu) -{ - struct pmu_hw_events __percpu *hw_events = armpmu->hw_events; - int irq = per_cpu(hw_events->irq, cpu); - - armpmu_free_cpu_irq(irq, cpu); -} - -int armpmu_request_cpu_irq(int irq, int cpu) +int armpmu_request_irq(int irq, int cpu) { int err = 0; const irq_handler_t handler = armpmu_dispatch_irq; @@ -598,16 +590,6 @@ err_out: return err; } -int armpmu_request_irq(struct arm_pmu *armpmu, int cpu) -{ - struct pmu_hw_events __percpu *hw_events = armpmu->hw_events; - int irq = per_cpu(hw_events->irq, cpu); - if (!irq) - return 0; - - return armpmu_request_cpu_irq(irq, cpu); -} - static int armpmu_get_cpu_irq(struct arm_pmu *pmu, int cpu) { struct pmu_hw_events __percpu *hw_events = pmu->hw_events; |