[PATCH v10 6/8] arm_pmu: Use of_cpu_node_to_id helper
From: suzuki.poulose@arm.com (Suzuki K Poulose)
Date: 2017-11-03 17:51:37
Also in:
linux-devicetree, lkml
Subsystem:
arm pmu profiling and debugging, the rest · Maintainers:
Will Deacon, Mark Rutland, Linus Torvalds
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 <redacted> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/perf/arm_pmu_platform.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 4eafa7a42e52..a96884e37eaf 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c@@ -81,19 +81,10 @@ 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);
--
2.13.6