Hi Thomas,
The patch below removes the duplicate entry for the -m/--mlockall option from
the cyclictest manpage. Patch is againnst current HEAD of rt-tests.git
Cheers, Tobias
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
This is patch to support wakeup & wakeup_rt tracing at the argument of
cyclictest additionally. Current cyclictest support three tracing
like PREEMPTOFF, IRQSOFF, PREEMPTIRQSOFF just.
This additional function will help wakeup related tracing
about sleep api [ex: nanosleep() , usleep] of cyclictest.
Practically speaking, wakeup(+wakeup-rt) tracing by steven rostedt is useful
in the linux based embedded product development.
After patching,
Fedora9#> cat /debug/tracing/available_tracers
syscall blk kmemtrace power branch function_graph mmiotrace wakeup_rt wakeup \
preemptirqsoff preemptoff irqsoff function sched_switch initcall nop
Fedora9#> cyclictest -t 5 -p 80 -b 1000 -w -D 10 [enter] <--- tracing wakeup
Fedora9#> cat /debug/tracing/trace
Fedora9#> cyclictest -t 5 -p 80 -b 1000 -W -D 10 [enter] <--- tracing wakeup-rt
Fedora9#> cat /debug/tracing/trace
Signed-off-by: GeunSik Lim <geunsik.lim@samsung.com>
Signed-off-by: Clark Williams <williams@redhat.com>
Author: Lim,GeunSik <leemgs1@gmail.com>
Date: Tue Apr 21 16:03:56 2009 +0900
[PATCH] cyclictest: Remove duplicated description of cyclictest usage like -h.
We often utilize a various options with "#>cyclictest --help" command in the terminal environment.
When We run "#> cyclictest --help" command, We can show duplicated description about "-h" option
for latency histogram.
Unfortunatley, Some of the users is confusing because of two options about latency histogram.
[root@fedora9 invain]# ./cyclictest --help
cyclictest V 0.36
Usage:
cyclictest <options>
-a [NUM] --affinity run thread #N on processor #N, if possible
with NUM pin all threads to the processor NUM
-b USEC --breaktrace=USEC send break trace command when latency > USEC
-B --preemptirqs both preempt and irqsoff tracing (used with -b)
-c CLOCK --clock=CLOCK select clock
0 = CLOCK_MONOTONIC (default)
1 = CLOCK_REALTIME
-C --context context switch tracing (used with -b)
-d DIST --distance=DIST distance of thread intervals in us default=500
-E --event event tracing (used with -b)
-f --ftrace function trace (when -b is active)
-h H_MAX latency histogram size in us default 0 (off)
-i INTV --interval=INTV base interval of thread in us default=1000
................. [Middle Omission] ...................
-v --verbose output values on stdout for statistics
format: n:c:v n=tasknum c=count v=value in us
-D --duration=t specify a length for the test run
default is in seconds, but 'm', 'h', or 'd' maybe added
to modify value to minutes, hours or days
-h --histogram=US dump a latency histogram to stdout after the run
US is the max time to be be tracked in microseconds
For example,
-h H_MAX latency histogram size in us default 0 (off)
-h --histogram=US dump a latency histogram to stdout after the run
US is the max time to be be tracked in microseconds
As you see, We don't need "-h H_MAX . . . . . ." description.
So, I think that We have to remove old option about description of histogram function.
Signed-off-by: GeunSik Lim <leemgs1@gmail.com>
Author: Lim,GeunSik <leemgs1@gmail.com>
Date: Wed Apr 8 22:21:59 2009 +0900
[patch] cyclictest: bugfix getopt_long() for -C and -F.
We can not use -C option without --context option for tracing context switching.
ex) ./cyclictest -t 10 -m -b 100 -C
We can not use -E option without --event option for tracing events.
ex) ./cyclictest -t 10 -m -b 100 -E
Append -C and -E option on getopt_long() function to solve this problems.
Signed-off-by: GeunSik Lim <leemgs1@gmail.com>
Signed-off-by: Clark Williams <williams@redhat.com>
It's more common that DESTDIR doesn't include /usr or /usr/local but
only the base directory for a relocated installation. The in-tree
prefix is usually named "prefix".
"usually" here means as it is done by autoconf and as it is expected by
the Debian package helpers.
While at it also make the other path variables match this convention.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
GeunSik Lim <leemgs1@gmail.com> found a problem with settracer()
in that it had a hardcoded limit to the number of tracers searched.
Unfortunately his patch found a bug in either fscanf or debugfs,
since it doesn't seem to return EOF at the end of input, so I reworked
the patch to read all the input and parse it using strtok.
Signed-off-by: Clark Williams <williams@redhat.com>
cyclictest results are presented in microseconds, although internal precision
uses nanosecond unit. This patch adds a command-line option for keeping the
nanoseconds precision. man page has also been update.
Signed-off-by: Luis Henriques <henrix@sapo.pt>
Signed-off-by: Clark Williams <williams@redhat.com>
The tracer setup happens in every thread, which is nonsense. First of
all it leads to a lot of irritating warnings because the things are
setup multiple times. The worst effect is that one tasks runs already
into the tracer stop condition and the next one reenables the tracer.
Move the tracer setup into the main thread and do it only once.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
Switching back to SCHED_OTHER in check_priv() fails due to the param
argument of sched_setscheduler() set to NULL.
Set the priority to 0 and hand in params.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
Execute a make clean into a rt-tests directory, exploded from a tarball,
cause erroneous erasing of the ChangeLog file. Let make do it only if it
executes under git tree.
Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Clark Williams <williams@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Subject: [patch 2/2] cyclictest: support for latest mainline tracer
The tracer in mainline changed the interface another time. Make it
work again.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Subject: [patch 1/2] cyclictest: code cleanup
Started to grow whitespace and formatting sloppiness.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
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Date: Tue, 3 Jun 2008 11:50:40 -0400 (EDT)
From: Steven Rostedt <rostedt@goodmis.org>
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To: Thomas Gleixner <tglx@linutronix.de>
cc: linux-rt-users <linux-rt-users@vger.kernel.org>,
Darren Hart <dvhltc@us.ibm.com>,
Subrata Modak <subrata@linux.vnet.ibm.com>
Subject: [PATCH - cyclictest] handle latest ftrace
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This patch has cyclictest work a bit better with ftrace. Some new options
have been added.
When -b is used:
-P : use the preemptoff tracer
-I : use the irqsoff tracer
-B : use preemptirqsoff tracer
If the above are not set, then it tries to use "events" tracer if it is
available (currently only available in the -rt kernel) and if that is not
set, it defaults to the sched-switch tracer.
-f will enabled the function tracer.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Tobias Klauser
Clark Williams
GeunSik Lim
GeunSik Lim
Uwe Kleine-König
Uwe Kleine-König
Luis Henriques
Thomas Gleixner
Alessio Igor Bogani
Clark Williams
Luis Claudio R. Goncalves
Sven-Thorsten Dietrich