linux-toradex.git/tools, branch tegra-10.9.4

perf timechart: Use tid not pid for COMM change

2010-01-25T18:49:44+00:00

commit 8f06d7e6e1bbfb32698d6d455583ab7460c090e2 upstream.

A process that changes its comm field, does this on a per kernel
task struct basis. The timechart tool used, incorrectly, the pid
to track this, and should have used the tid instead...

Signed-off-by: Arjan van de Ven 
Cc: Peter Zijlstra 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
LKML-Reference: <20100116125319.34ac3edd@infradead.org>
Signed-off-by: Ingo Molnar 
Signed-off-by: Greg Kroah-Hartman

perf tools: Fix permission checks

2009-11-08T16:04:54+00:00

The perf_event_open() system call returns EACCES if the user is
not root which results in a very confusing error message:

  $ perf record -A -a -f

    Error: perfcounter syscall returned with -1 (Permission denied)

    Fatal: No CONFIG_PERF_EVENTS=y kernel support configured?

It turns out that's because perf tools are checking only for
EPERM. Fix that up to get a much better error message:

  $ perf record -A -a -f
    Fatal: Permission error - are you root?

Signed-off-by: Pekka Enberg 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
LKML-Reference: <1257696066-4046-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar

perf tools: Remove -Wcast-align

2009-10-26T08:43:06+00:00

The present use of -Wcast-align causes the build to blow up on
SH due to generating a "cast increases required alignment of
target type" error on each invocation of list_for_each_entry().

It seems that this was previously reported and killed off in the
ia64 support patch, but nothing seems to have happened with
that. Presumably the same problem still remains there, too.

Signed-off-by: Paul Mundt 
LKML-Reference: <20091026054000.GA13517@linux-sh.org>
Signed-off-by: Ingo Molnar

perf tools: Fix compatibility with libelf 0.8 and autodetect

2009-10-25T16:09:14+00:00

The Makefile now automatically defines LIBELF_NO_MMAP when
libelf 0.8.x is detected. libelf 0.8 is still maintained and
some distributions such as Arch Linux use it instead of
elfutils.

Signed-off-by: Marti Raudsepp 
Cc: Lucas De Marchi 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
Cc: Arjan van de Ven 
Cc: Mike Galbraith 
LKML-Reference: <1256400636.3007.16.camel@newn>
Signed-off-by: Ingo Molnar

perf timechart: Improve the visual appearance of scheduler delays

2009-10-20T01:39:21+00:00

[from KS feedback]

Currently, scheduler delays are shown in a mostly transparent,
light yellow color. This color is rather hard to see on several
screens, especially projectors.

This patch changes the color of the scheduler delays to be a
much more "hard" yellow that survived the kernel summit
projector.

Reported-by: Linus Torvalds 
Signed-off-by: Arjan van de Ven 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
LKML-Reference: <20091020064731.20ae126a@infradead.org>
Signed-off-by: Ingo Molnar

perf timechart: Fix the wakeup-arrows that point to non-visible processes

2009-10-20T01:39:16+00:00

The timechart wakeup arrows currently show no process
information when the waker/wakee are processes that are not
actually chosen to be shown on the timechart.

This patch fixes this oversight, by looking through all
processes (after giving preference to visible processes) as well
as falling back to just showing the PID if no name for the
process can be resolved.

Signed-off-by: Arjan van de Ven 
Cc: Peter Zijlstra 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
LKML-Reference: <20091020064649.0e4959b2@infradead.org>
Signed-off-by: Ingo Molnar

perf top: Fix --delay_secs 0 division by zero

2009-10-19T07:52:39+00:00

Add delay_secs sanity check to handle_keypress,
this fixes a division by zero crash.

Signed-off-by: Tim Blechmann 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Mike Galbraith 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
LKML-Reference: <4AD9EBFD.106@klingt.org>
Signed-off-by: Ingo Molnar

perf tools: Bump version to 0.0.2

2009-10-16T08:34:28+00:00

We released the first version of perf with 0.0.1 in v2.6.31,
time to double our version number to 0.0.2 ;-)

Cc: Peter Zijlstra 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
LKML-Reference: 
Signed-off-by: Ingo Molnar

perf tools: Remove static debugfs path from parse-events

2009-10-12T20:41:05+00:00

Timechart doesn't work if debugfs is not in /sys/kernel/debug/.
Fixed by using global debugfs_path which is filled in by perf.

Signed-off-by: Ashwin Chaugule 
Cc: "Arjan van de Ven" 
LKML-Reference: 
Signed-off-by: Ingo Molnar

perf tools: Fix the NO_64BIT build on pure 64-bit systems

2009-10-12T08:00:27+00:00

Randy Dunlap reported that 'make NO_64BIT=1' fails to build
a pure 32-b it binary on 64-bit/64-bit x86 systems.

The reason is that we dont pass in the -m32 and GCC defaults
to -m64.

So pass it in - and also extend the warning message about libelf
dependencies - glibc-dev[el] is needed as well beyond the libelf
library.

Reported-by: Randy Dunlap 
Cc: Peter Zijlstra 
Cc: Frederic Weisbecker 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: Message-Id: <20091005131729.78444bfb.randy.dunlap@oracle.com>
Signed-off-by: Ingo Molnar