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| author | Robin Murphy <robin.murphy@arm.com> | 2021-01-28 14:12:44 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-01-28 21:14:45 +0100 |
| commit | 1c8147ea89c883d1f4e20f1b1d9c879291430102 (patch) | |
| tree | 62e8c8d66f0fa8c0d2a17bd2ed457a255e9b1d42 /drivers/perf | |
| parent | perf/arm-cmn: Fix PMU instance naming (diff) | |
| download | linux-1c8147ea89c883d1f4e20f1b1d9c879291430102.tar.xz linux-1c8147ea89c883d1f4e20f1b1d9c879291430102.zip | |
perf/arm-cmn: Move IRQs when migrating context
If we migrate the PMU context to another CPU, we need to remember to
retarget the IRQs as well.
Fixes: 0ba64770a2f2 ("perf: Add Arm CMN-600 PMU driver")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/e080640aea4ed8dfa870b8549dfb31221803eb6b.1611839564.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/arm-cmn.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 6bdf13f65875..1328159fe564 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -1150,7 +1150,7 @@ static int arm_cmn_commit_txn(struct pmu *pmu) static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) { struct arm_cmn *cmn; - unsigned int target; + unsigned int i, target; cmn = hlist_entry_safe(node, struct arm_cmn, cpuhp_node); if (cpu != cmn->cpu) @@ -1161,6 +1161,8 @@ static int arm_cmn_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) return 0; perf_pmu_migrate_context(&cmn->pmu, cpu, target); + for (i = 0; i < cmn->num_dtcs; i++) + irq_set_affinity_hint(cmn->dtc[i].irq, cpumask_of(target)); cmn->cpu = target; return 0; } |