diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-09-09 16:55:53 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-03-14 10:50:04 -0500 |
| commit | dcc587cdabc240be0855d96768e9fe2928f19065 (patch) | |
| tree | 1ef4d744b75a683bc1eb40a156c6576173a2e6d3 /kernel | |
| parent | b4797164861645e330a5e0826350591f450e5c07 (diff) | |
ftrace-crap.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 26 | ||||
| -rw-r--r-- | kernel/trace/trace.h | 1 |
2 files changed, 24 insertions, 3 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 26d9aaa741c2..9b2e20893033 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -359,11 +359,13 @@ static DECLARE_DELAYED_WORK(wakeup_work, wakeup_work_handler); */ void trace_wake_up(void) { +#ifndef CONFIG_PREEMPT_RT_FULL const unsigned long delay = msecs_to_jiffies(2); if (trace_flags & TRACE_ITER_BLOCK) return; schedule_delayed_work(&wakeup_work, delay); +#endif } static int __init set_buf_size(char *str) @@ -719,6 +721,12 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu) } #endif /* CONFIG_TRACER_MAX_TRACE */ +#ifndef CONFIG_PREEMPT_RT_FULL +static void default_wait_pipe(struct trace_iterator *iter); +#else +#define default_wait_pipe poll_wait_pipe +#endif + /** * register_tracer - register a tracer with the ftrace system. * @type - the plugin for the tracer @@ -3192,6 +3200,7 @@ static int tracing_release_pipe(struct inode *inode, struct file *file) return 0; } +#ifndef CONFIG_PREEMPT_RT_FULL static unsigned int tracing_poll_pipe(struct file *filp, poll_table *poll_table) { @@ -3213,8 +3222,7 @@ tracing_poll_pipe(struct file *filp, poll_table *poll_table) } } - -void default_wait_pipe(struct trace_iterator *iter) +static void default_wait_pipe(struct trace_iterator *iter) { DEFINE_WAIT(wait); @@ -3225,6 +3233,20 @@ void default_wait_pipe(struct trace_iterator *iter) finish_wait(&trace_wait, &wait); } +#else +static unsigned int +tracing_poll_pipe(struct file *filp, poll_table *poll_table) +{ + struct trace_iterator *iter = filp->private_data; + + if ((trace_flags & TRACE_ITER_BLOCK) || !trace_empty(iter)) + return POLLIN | POLLRDNORM; + poll_wait_pipe(iter); + if (!trace_empty(iter)) + return POLLIN | POLLRDNORM; + return 0; +} +#endif /* * This is a make-shift waitqueue. diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 092e1f8d18dc..69b87009854c 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -345,7 +345,6 @@ void trace_init_global_iter(struct trace_iterator *iter); void tracing_iter_reset(struct trace_iterator *iter, int cpu); -void default_wait_pipe(struct trace_iterator *iter); void poll_wait_pipe(struct trace_iterator *iter); void ftrace(struct trace_array *tr, |