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authorMark Rutland <mark.rutland@arm.com>2017-03-10 13:46:14 +0300
committerWill Deacon <will.deacon@arm.com>2017-03-31 20:20:02 +0300
commit7ed98e0168bd23d8ea3294e95254cc5b4000c948 (patch)
tree7e8de90dca98d514bde6ec83674188f8cefca897 /include/linux/perf
parent2681f0184276d7fc934b6866a5a267f5b3369f7d (diff)
downloadlinux-7ed98e0168bd23d8ea3294e95254cc5b4000c948.tar.xz
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.h3
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);