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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-04-29 17:54:37 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-04-30 08:40:05 -0400 |
| commit | b1169cc69ba96b124df820904a6d3eb775491d7f (patch) | |
| tree | 95927d3a0c262c94def2d76b7f591e9d8ad46385 /kernel/trace/trace_nop.c | |
| parent | f4874261049e3abdd481359d82cafa5068369ebd (diff) | |
| download | blackbird-op-linux-b1169cc69ba96b124df820904a6d3eb775491d7f.tar.gz blackbird-op-linux-b1169cc69ba96b124df820904a6d3eb775491d7f.zip | |
tracing: Remove mock up poll wait function
Now that the ring buffer has a built in way to wake up readers
when there's data, using irq_work such that it is safe to do it
in any context. But it was still using the old "poor man's"
wait polling that checks every 1/10 of a second to see if it
should wake up a waiter. This makes the latency for a wake up
excruciatingly long. No need to do that anymore.
Completely remove the different wait_poll types from the tracers
and have them all use the default one now.
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_nop.c')
| -rw-r--r-- | kernel/trace/trace_nop.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/trace/trace_nop.c b/kernel/trace/trace_nop.c index 69a5cc94c01a..fcf0a9e48916 100644 --- a/kernel/trace/trace_nop.c +++ b/kernel/trace/trace_nop.c @@ -91,7 +91,6 @@ struct tracer nop_trace __read_mostly = .name = "nop", .init = nop_trace_init, .reset = nop_trace_reset, - .wait_pipe = poll_wait_pipe, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_nop, #endif |
