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perf: Remove task_ctx_sched_in() 

Make task_ctx_sched_*() imply EVENT_ALL, since anything less will not
actually have scheduled the task in/out at all.

Since there's no site that schedules all of a task in (due to the
interleave with flexible cpuctx) we can remove this function.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110409192141.817893268@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2011-04-09 21:17:43 +02:00 committed by Ingo Molnar
parent facc43071c
commit 04dc2dbbfe
1 changed files with 6 additions and 20 deletions
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26
kernel/events/core.c
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@ -1979,8 +1979,7 @@ void __perf_event_task_sched_out(struct task_struct *task,
perf_cgroup_sched_out(task);
}
static void task_ctx_sched_out(struct perf_event_context *ctx,
enum event_type_t event_type)
static void task_ctx_sched_out(struct perf_event_context *ctx)
{
struct perf_cpu_context *cpuctx = __get_cpu_context(ctx);
@ -1990,7 +1989,7 @@ static void task_ctx_sched_out(struct perf_event_context *ctx,
if (WARN_ON_ONCE(ctx != cpuctx->task_ctx))
return;
ctx_sched_out(ctx, cpuctx, event_type);
ctx_sched_out(ctx, cpuctx, EVENT_ALL);
cpuctx->task_ctx = NULL;
}
@ -2098,19 +2097,6 @@ static void cpu_ctx_sched_in(struct perf_cpu_context *cpuctx,
ctx_sched_in(ctx, cpuctx, event_type, task);
}
static void task_ctx_sched_in(struct perf_event_context *ctx,
enum event_type_t event_type)
{
struct perf_cpu_context *cpuctx;
cpuctx = __get_cpu_context(ctx);
if (cpuctx->task_ctx == ctx)
return;
ctx_sched_in(ctx, cpuctx, event_type, NULL);
cpuctx->task_ctx = ctx;
}
static void perf_event_context_sched_in(struct perf_event_context *ctx,
struct task_struct *task)
{
@ -2363,7 +2349,7 @@ static void perf_rotate_context(struct perf_cpu_context *cpuctx)
cpu_ctx_sched_out(cpuctx, EVENT_FLEXIBLE);
if (ctx)
task_ctx_sched_out(ctx, EVENT_FLEXIBLE);
ctx_sched_out(ctx, cpuctx, EVENT_FLEXIBLE);
rotate_ctx(&cpuctx->ctx);
if (ctx)
@ -2371,7 +2357,7 @@ static void perf_rotate_context(struct perf_cpu_context *cpuctx)
cpu_ctx_sched_in(cpuctx, EVENT_FLEXIBLE, current);
if (ctx)
task_ctx_sched_in(ctx, EVENT_FLEXIBLE);
ctx_sched_in(ctx, cpuctx, EVENT_FLEXIBLE, current);
done:
if (remove)
@ -2435,7 +2421,7 @@ static void perf_event_enable_on_exec(struct perf_event_context *ctx)
perf_cgroup_sched_out(current);
raw_spin_lock(&ctx->lock);
task_ctx_sched_out(ctx, EVENT_ALL);
task_ctx_sched_out(ctx);
list_for_each_entry(event, &ctx->pinned_groups, group_entry) {
ret = event_enable_on_exec(event, ctx);
@ -6794,7 +6780,7 @@ static void perf_event_exit_task_context(struct task_struct *child, int ctxn)
* incremented the context's refcount before we do put_ctx below.
*/
raw_spin_lock(&child_ctx->lock);
task_ctx_sched_out(child_ctx, EVENT_ALL);
task_ctx_sched_out(child_ctx);
child->perf_event_ctxp[ctxn] = NULL;
/*
* If this context is a clone; unclone it so it can't get