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| author |   Mark Rutland <mark.rutland@arm.com> | 2017-03-10 10:46:14 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2017-03-31 18:20:02 +0100 |
| commit | 7ed98e0168bd23d8ea3294e95254cc5b4000c948 (patch) | |
| tree | 7e8de90dca98d514bde6ec83674188f8cefca897 /include/linux/perf | |
| parent | drivers/perf: arm_pmu: rework per-cpu allocation (diff) | |
| download | wireguard-linux-7ed98e0168bd23d8ea3294e95254cc5b4000c948.tar.xz wireguard-linux-7ed98e0168bd23d8ea3294e95254cc5b4000c948.zip | |
drivers/perf: arm_pmu: manage interrupts per-cpu
When requesting or freeing interrupts, we use platform_get_irq() to find
relevant irqs, backing this up with additional information in an
optional irq_affinity table.
This means that our irq request and free paths are tied to a
platform_device, and our request path must jump through a number of
hoops in order to determine the required affinity of each interrupt.
Given that the affinity must be static, we can compute the affinity once
up-front at probe time, simplifying the irq request and free paths. By
recording interrupts in a per-cpu data structure, we simplify a few
paths, and permit a subsequent rework of the request and free paths.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
[will: rename local nr_irqs variable to avoid conflict with global]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include/linux/perf')
| -rw-r--r-- | include/linux/perf/arm_pmu.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h index 8462da266089..05a3eb447fc8 100644 --- a/include/linux/perf/arm_pmu.h +++ b/include/linux/perf/arm_pmu.h @@ -75,6 +75,8 @@ struct pmu_hw_events { * already have to allocate this struct per cpu. */ struct arm_pmu *percpu_pmu; + + int irq; }; enum armpmu_attr_groups { @@ -88,7 +90,6 @@ struct arm_pmu { struct pmu pmu; cpumask_t active_irqs; cpumask_t supported_cpus; - int *irq_affinity; char *name; irqreturn_t (*handle_irq)(int irq_num, void *dev); void (*enable)(struct perf_event *event); |