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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 /drivers/perf/arm_pmu_acpi.c
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 'drivers/perf/arm_pmu_acpi.c')
-rw-r--r--drivers/perf/arm_pmu_acpi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/perf/arm_pmu_acpi.c b/drivers/perf/arm_pmu_acpi.c
index 705f1a390e31..30c5f2bbce59 100644
--- a/drivers/perf/arm_pmu_acpi.c
+++ b/drivers/perf/arm_pmu_acpi.c
@@ -127,7 +127,7 @@ static struct arm_pmu *arm_pmu_acpi_find_alloc_pmu(void)
return pmu;
}
- pmu = armpmu_alloc();
+ pmu = armpmu_alloc_atomic();
if (!pmu) {
pr_warn("Unable to allocate PMU for CPU%d\n",
smp_processor_id());