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authorMark Rutland <mark.rutland@arm.com>2018-02-05 19:41:58 +0300
committerWill Deacon <will.deacon@arm.com>2018-02-20 14:34:54 +0300
commit0dc1a1851af1d593eee248b94c1277c7c7ccbbce (patch)
treef32aed65915b0416167c0ec6e867ce0a25fc2307 /include/linux
parentd3d5aac206b4e9e569a22fe1811c909dde17587c (diff)
downloadlinux-0dc1a1851af1d593eee248b94c1277c7c7ccbbce.tar.xz
arm_pmu: add armpmu_alloc_atomic()
In ACPI systems, we don't know the makeup of CPUs until we hotplug them on, and thus have to allocate the PMU datastructures at hotplug time. Thus, we must use GFP_ATOMIC allocations. Let's add an armpmu_alloc_atomic() that we can use in this case. 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 'include/linux')
-rw-r--r--include/linux/perf/arm_pmu.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 899bc7ef0881..1f8bb83ef42f 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -157,6 +157,7 @@ static inline int arm_pmu_acpi_probe(armpmu_init_fn init_fn) { return 0; }
/* Internal functions only for core arm_pmu code */
struct arm_pmu *armpmu_alloc(void);
+struct arm_pmu *armpmu_alloc_atomic(void);
void armpmu_free(struct arm_pmu *pmu);
int armpmu_register(struct arm_pmu *pmu);
int armpmu_request_irq(struct arm_pmu *armpmu, int cpu);