Commit-ID: 7e6ea92df3fd7cbe74e7985c6f3e40255c44b201 Gitweb: http://git.kernel.org/tip/7e6ea92df3fd7cbe74e7985c6f3e40255c44b201 Author: Frederic Weisbecker <fweisbec@xxxxxxxxx> AuthorDate: Sun, 22 Mar 2009 23:10:47 +0100 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Mon, 23 Mar 2009 09:22:15 +0100 tracing/ftrace: make nop-tracer use polling wait for events on pipe Impact: display events when they arrive Now that the events don't use wake_up() anymore, we need the nop tracer to poll waiting for events on the pipe. Especially because nop is useful to look at orphan traces types (traces types that don't rely on specific tracers) because it doesn't produce traces itself. And unlike other tracers that trigger specific traces periodically, nop triggers no traces by itself that can wake him. Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> LKML-Reference: <1237759847-21025-5-git-send-email-fweisbec@xxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- kernel/trace/trace_nop.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/kernel/trace/trace_nop.c b/kernel/trace/trace_nop.c index 9aa84bd..394f944 100644 --- a/kernel/trace/trace_nop.c +++ b/kernel/trace/trace_nop.c @@ -91,6 +91,7 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html