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Subject[PATCH 07/46] kernel: Mark functions as static and remove unused function in events/core.c
Mark functions as static in kernel/events/core.c because they are not
used outside this file. Also, remove unused function in
kernel/events/core.c.

This eliminates the following warning in kernel/events/core.c:
kernel/events/core.c:182:6: warning: no previous prototype for ‘update_perf_cpu_limits’ [-Wmissing-prototypes]
kernel/events/core.c:470:6: warning: no previous prototype for ‘perf_cgroup_switch’ [-Wmissing-prototypes]
kernel/events/core.c:781:6: warning: no previous prototype for ‘perf_cpu_hrtimer_cancel’ [-Wmissing-prototypes]
kernel/events/core.c:6574:13: warning: no previous prototype for ‘perf_init_event’ [-Wmissing-prototypes]
kernel/events/core.c:7707:5: warning: no previous prototype for ‘perf_event_init_context’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
---
kernel/events/core.c | 36 ++++--------------------------------
1 file changed, 4 insertions(+), 32 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 56003c6..672e51f 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -179,7 +179,7 @@ static int perf_sample_period_ns __read_mostly = DEFAULT_SAMPLE_PERIOD_NS;
static int perf_sample_allowed_ns __read_mostly =
DEFAULT_SAMPLE_PERIOD_NS * DEFAULT_CPU_TIME_MAX_PERCENT / 100;

-void update_perf_cpu_limits(void)
+static void update_perf_cpu_limits(void)
{
u64 tmp = perf_sample_period_ns;

@@ -467,7 +467,7 @@ perf_cgroup_set_timestamp(struct task_struct *task,
* mode SWOUT : schedule out everything
* mode SWIN : schedule in based on cgroup for next
*/
-void perf_cgroup_switch(struct task_struct *task, int mode)
+static void perf_cgroup_switch(struct task_struct *task, int mode)
{
struct perf_cpu_context *cpuctx;
struct pmu *pmu;
@@ -777,34 +777,6 @@ static enum hrtimer_restart perf_cpu_hrtimer_handler(struct hrtimer *hr)
return ret;
}

-/* CPU is going down */
-void perf_cpu_hrtimer_cancel(int cpu)
-{
- struct perf_cpu_context *cpuctx;
- struct pmu *pmu;
- unsigned long flags;
-
- if (WARN_ON(cpu != smp_processor_id()))
- return;
-
- local_irq_save(flags);
-
- rcu_read_lock();
-
- list_for_each_entry_rcu(pmu, &pmus, entry) {
- cpuctx = this_cpu_ptr(pmu->pmu_cpu_context);
-
- if (pmu->task_ctx_nr == perf_sw_context)
- continue;
-
- hrtimer_cancel(&cpuctx->hrtimer);
- }
-
- rcu_read_unlock();
-
- local_irq_restore(flags);
-}
-
static void __perf_cpu_hrtimer_init(struct perf_cpu_context *cpuctx, int cpu)
{
struct hrtimer *hr = &cpuctx->hrtimer;
@@ -6571,7 +6543,7 @@ void perf_pmu_unregister(struct pmu *pmu)
free_pmu_context(pmu);
}

-struct pmu *perf_init_event(struct perf_event *event)
+static struct pmu *perf_init_event(struct perf_event *event)
{
struct pmu *pmu = NULL;
int idx;
@@ -7704,7 +7676,7 @@ inherit_task_group(struct perf_event *event, struct task_struct *parent,
/*
* Initialize the perf_event context in task_struct
*/
-int perf_event_init_context(struct task_struct *child, int ctxn)
+static int perf_event_init_context(struct task_struct *child, int ctxn)
{
struct perf_event_context *child_ctx, *parent_ctx;
struct perf_event_context *cloned_ctx;
--
1.7.9.5
--
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