Commit d09ce834 authored by Sudeep Holla's avatar Sudeep Holla Committed by Will Deacon

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: default avatarSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 2d23ed04
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/export.h> #include <linux/export.h>
#include <linux/of.h> #include <linux/of_device.h>
#include <linux/perf_event.h> #include <linux/perf_event.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/slab.h> #include <linux/slab.h>
...@@ -1335,7 +1335,7 @@ static int armpmu_device_probe(struct platform_device *pdev) ...@@ -1335,7 +1335,7 @@ static int armpmu_device_probe(struct platform_device *pdev)
} }
for_each_possible_cpu(cpu) 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; break;
if (cpu >= nr_cpu_ids) { if (cpu >= nr_cpu_ids) {
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment