diff options
| author |   Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-01-02 11:25:31 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2018-01-02 16:43:12 +0000 |
| commit | 66582787314ed0bd1dcac3f7a2b98ff71f3fb653 (patch) | |
| tree | 93b89e1fd0c657896cc4e489ee2547d79c142006 /drivers/perf | |
| parent | arm64: Use of_cpu_node_to_id helper for CPU topology parsing (diff) | |
| download | linux-dev-66582787314ed0bd1dcac3f7a2b98ff71f3fb653.tar.xz linux-dev-66582787314ed0bd1dcac3f7a2b98ff71f3fb653.zip | |
arm_pmu: Use of_cpu_node_to_id helper
Use the new generic helper, of_cpu_node_to_id(), to map a
a phandle to the logical CPU number while parsing the
PMU irq affinity.
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/arm_pmu_platform.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c index 91b224eced18..46501cc79fd7 100644 --- a/drivers/perf/arm_pmu_platform.c +++ b/drivers/perf/arm_pmu_platform.c @@ -82,19 +82,10 @@ static int pmu_parse_irq_affinity(struct device_node *node, int i) return -EINVAL; } - /* Now look up the logical CPU number */ - for_each_possible_cpu(cpu) { - struct device_node *cpu_dn; - - cpu_dn = of_cpu_device_node_get(cpu); - of_node_put(cpu_dn); - - if (dn == cpu_dn) - break; - } - - if (cpu >= nr_cpu_ids) { + cpu = of_cpu_node_to_id(dn); + if (cpu < 0) { pr_warn("failed to find logical CPU for %s\n", dn->name); + cpu = nr_cpu_ids; } of_node_put(dn); |