diff options
| author | Sudeep Holla <sudeep.holla@arm.com> | 2015-06-30 13:56:56 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-27 11:08:38 +0100 |
| commit | d09ce834dfffd93aa4586b3e07faaf901ee8706f (patch) | |
| tree | 34de1308aa1e53b8cc2ad0a875a9c1d4429bdc0c | |
| parent | 2d23ed04de933625bc777cc474d2cd9a2a3fa860 (diff) | |
arm64: 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>
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 2cd580a1fa80..563f8ce8df68 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -25,7 +25,7 @@ #include <linux/irq.h> #include <linux/kernel.h> #include <linux/export.h> -#include <linux/of.h> +#include <linux/of_device.h> #include <linux/perf_event.h> #include <linux/platform_device.h> #include <linux/slab.h> @@ -1335,7 +1335,7 @@ static int armpmu_device_probe(struct platform_device *pdev) } 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) { |