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| author | Sudeep Holla <sudeep.holla@arm.com> | 2015-06-30 13:56:57 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-31 15:01:14 +0100 |
| commit | bc1e3c4687df62a1f2ba1b6be11efbeb76145366 (patch) | |
| tree | 54d5b9de077f21ae746ca38cc6587bc80df44638 /arch/arm/kernel | |
| parent | b6c084d7aa8bca21920cbbe13ad58572fa85ece6 (diff) | |
| download | lwn-bc1e3c4687df62a1f2ba1b6be11efbeb76145366.tar.gz lwn-bc1e3c4687df62a1f2ba1b6be11efbeb76145366.zip | |
ARM: perf: replace arch_find_n_match_cpu_physical_id with of_cpu_device_node_get
arch_find_n_match_cpu_physical_id parses the device tree to get the
device node for a given logical cpu index. However, since ARM PMUs get
probed after the CPU device nodes are stashed while registering the
cpus, we can use of_cpu_device_node_get to avoid another DT parse.
This patch replaces arch_find_n_match_cpu_physical_id with
of_cpu_device_node_get to reuse the stashed value directly instead.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 5a8f17bfcc60..1cb40651d783 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -15,7 +15,7 @@ #include <linux/cpumask.h> #include <linux/export.h> #include <linux/kernel.h> -#include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -824,7 +824,7 @@ static int of_pmu_irq_cfg(struct arm_pmu *pmu) /* Now look up the logical CPU number */ for_each_possible_cpu(cpu) - if (arch_find_n_match_cpu_physical_id(dn, cpu, NULL)) + if (dn == of_cpu_device_node_get(cpu)) break; if (cpu >= nr_cpu_ids) { |