Sorry, I mistake because I don't understand how to submit patch exactly. I just appended below "singned-off" contents for convenience. Sorry again. Signed-off-by: GeunSik Lim <leemgs1@xxxxxxxxx> Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> 2009/4/6 GeunSik Lim <leemgs1@xxxxxxxxx>: > I attached patch file again because no-operation is changed > from "none"word to "nop" word. > > for example, > - "wakeup preemptirqsoff preemptoff irqsoff ftrace sched_switch none\n\n" > + "wakeup preemptirqsoff preemptoff irqsoff function sched_switch nop\n\n" > > ./trace_nop.c:struct tracer nop_trace __read_mostly = > .name = "nop", > .init = nop_trace_init, > .reset = nop_trace_reset, > .selftest = trace_selftest_startup_nop, > .flags = &nop_flags, > .set_flag = nop_set_flag > > > > 2009/4/6 GeunSik Lim <leemgs1@xxxxxxxxx>: >> Dear Steven, >> >> The author of ftrace(Internal kernel Function Tracer) feature >> renamed the ftrace tracer >> to function to avoid further confusion between the ftrace >> infrastructure and the >> function tracer on Oct-20, 2008. >> >> But, Update of Mini-HOWTO document are still not working >> . >> Most of the developers often utilize "/debug/tracing/README" file >> as Mini-HOWTO. >> They will confuse definition and usage about ftrace between >> README(ftrace) file >> and available_tracers(function) file after linux-2.6.27 like me. >> And, I want you to append "chrt -f 5 sleep 1" command as simple >> example for latency. >> >> Signed-off-by: GeunSik Lim <leemgs1@xxxxxxxxx> >> Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx> >> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> >> --- >> kernel/trace/trace.c | 3 ++- >> 1 files changed, 2 insertions(+), 1 deletions(-) >> >> diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c >> index a0174a4..15f0eec 100644 >> --- a/kernel/trace/trace.c >> +++ b/kernel/trace/trace.c >> @@ -2358,7 +2358,7 @@ static const char readme_msg[] = >> "# mkdir /debug\n" >> "# mount -t debugfs nodev /debug\n\n" >> "# cat /debug/tracing/available_tracers\n" >> - "wakeup preemptirqsoff preemptoff irqsoff ftrace sched_switch none\n\n" >> + "wakeup preemptirqsoff preemptoff irqsoff function >> sched_switch none\n\n" >> "# cat /debug/tracing/current_tracer\n" >> "none\n" >> "# echo sched_switch > /debug/tracing/current_tracer\n" >> @@ -2368,6 +2368,7 @@ static const char readme_msg[] = >> "noprint-parent nosym-offset nosym-addr noverbose\n" >> "# echo print-parent > /debug/tracing/trace_options\n" >> "# echo 1 > /debug/tracing/tracing_enabled\n" >> + "# chrt -f 5 sleep 1\n" >> "# cat /debug/tracing/trace > /tmp/trace.txt\n" >> "echo 0 > /debug/tracing/tracing_enabled\n" >> ; >> >> >> >> -- >> Regards, >> GeunSik Lim >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ >> > > > > -- > Regards, > GeunSik Lim > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- Regards, GeunSik Lim -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
