linux-toradex.git/kernel/trace/trace_selftest.c, branch v2.6.27.3

Merge branch 'tracing/sysprof' into auto-ftrace-next

2008-07-10T09:43:08+00:00

ftrace: limit use of check pages

2008-05-26T20:39:45+00:00

The check_pages function is called often enough that it can cause problems
with trace outputs or even bringing the system to a halt.

This patch limits the check_pages to the places that are most likely to
have problems. The check is made at the flip between the global array and
the max save array, as well as when the size of the buffers changes and
the self tests.

This patch also removes the BUG_ON from check_pages and replaces it with
a WARN_ON and disabling of the tracer.

Signed-off-by: Steven Rostedt 
Cc: pq@iki.fi
Cc: proski@gnu.org
Cc: sandmann@redhat.com
Cc: a.p.zijlstra@chello.nl
Signed-off-by: Thomas Gleixner

ftrace: make sysprof dependent on x86 for now

2008-05-23T21:40:01+00:00

that's the only tested platform for now. If there's interest we
can make it generic easily.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: sysprof-plugin, add self-tests

2008-05-23T21:39:38+00:00

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: support for PowerPC

2008-05-23T20:43:11+00:00

This patch adds full support for ftrace for PowerPC (both 64 and 32 bit).
This includes dynamic tracing and function filtering.

Signed-off-by: Steven Rostedt 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: user proper API for setting RT prios in selftest

2008-05-23T19:49:42+00:00

The wakeup selftest used an internal API for setting the test task priority.
This patch fixes it to use the proper API for performing such a task.

Thanks goes to Randy Dunlap for pointing out this build failure.

Signed-off-by: Steven Rostedt 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: selftest protect againt max flip

2008-05-23T19:15:59+00:00

There is a slight race condition in the selftest where the max update
of the wakeup and irqs/preemption off tests can be doing a max update as
the buffers are being tested. If this happens the system can crash with
a GPF.

This patch adds the max update spinlock around the checking of the
buffers to prevent such a race.

Signed-off-by: Steven Rostedt 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: fix dynamic ftrace selftest

2008-05-23T19:13:23+00:00

With the adding of the configuration changes in the Makefile to prevent
tracing of functions in the ftrace code, all tracing of all the ftrace
code has been removed. Unfortunately, one of the selftests, relied on
a function to be traced. With the new change, the function was no longer
traced and the test failed.

This patch separates out the test function into its own file so that
we can add the "-pg" flag to the compilation of that function and the
adding of the mcount call to that function.

Signed-off-by: Steven Rostedt 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: add TRACE_STACK and TRACE_SPECIAL to selftest validation

2008-05-23T19:13:12+00:00

The selftest validation code checks for valid entries in the trace buffer.
TRACE_STACK and TRACE_SPECIAL have been added to the code but not to
the validator. This patch adds the two to prevent them from flagging a
failure in the selftest.

Signed-off-by: Steven Rostedt 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

ftrace: add wakeup events to sched tracer

2008-05-23T19:04:06+00:00

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner