linux-toradex.git/tools, branch v2.6.37.2

perf timechart: Adjust perf timechart to the new power events

2011-02-24T22:54:25+00:00

commit 20c457b8587bee4644d998331d9e13be82e05b4c upstream.

[This patch is part of mainline git commit 20c457b8587bee4644d9.
  This should fix:
  http://www.mail-archive.com/linux-perf-users@vger.kernel.org/msg00057.html

  The regression was introduced by git commit:
  4c21adf26f8fcf86a755b9b9f55c2e9fd241e1fb]

builtin-timechart must only pass -e power:xy events if they are supported by
the running kernel, otherwise try to fetch the old power:power{start,end}
events.

For this I added the tiny helper function:

   int is_valid_tracepoint(const char *event_string)

to parse-events.[hc], which could be more generic as an interface and support
hardware/software/... events, not only tracepoints, but someone else could
extend that if needed...

Signed-off-by: Thomas Renninger 
Acked-by: Arjan van de Ven 
Acked-by: Jean Pihet 
LKML-Reference: <1294073445-14812-4-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar 
Signed-off-by: Greg Kroah-Hartman

perf: Fix callchain hit bad cast on ascii display

2011-01-03T15:13:11+00:00

ipchain__fprintf_graph() casts the number of hits in a branch as an
int, which means we lose its highests bits.

This results in meaningless number of callchain hits in perf.data
that have a high number of hits recorded, typically those that have
callchain branches hits appearing more than INT_MAX. This happens
easily as those are pondered by the event period.

Reported-by: Nick Piggin 
Signed-off-by: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Arnaldo Carvalho de Melo 
Cc: Paul Mackerras

perf probe: Fix to support libdwfl older than 0.148

2010-12-21T21:24:57+00:00

Since the libdwfl library before 0.148 fails to analyze live kernel debuginfo,
'perf probe --list' compiled with those old libdwfl sometimes crashes.

To avoid that bug, perf probe does not use libdwfl's live kernel analysis
routine when it is compiled with older libdwfl.

Side effect: perf with older libdwfl doesn't support listing probe in modules
with source code line. Those could be shown by symbol+offset.

Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Srikar Dronamraju 
Cc: Steven Rostedt 
LKML-Reference: <20101217131218.24123.62424.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix lazy wildcard matching

2010-12-21T21:15:42+00:00

Fix lazy wildcard matching to ignore space after wild card.

Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Frederic Weisbecker 
Cc: Hitoshi Mitake 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Srikar Dronamraju 
Cc: Steven Rostedt 
LKML-Reference: <20101217131200.24123.8202.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Arnaldo Carvalho de Melo

perf buildid-list: Fix error return for success

2010-12-16T11:43:47+00:00

It was always returning -1 (255), confusing test scripts.

Reported-by: Han Pingtian 
Cc: Frederic Weisbecker 
Cc: Han Pingtian 
Cc: Ingo Molnar 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Tom Zanussi 
LKML-Reference: 
Signed-off-by: Arnaldo Carvalho de Melo

perf buildid-cache: Fix symbolic link handling

2010-12-16T11:41:45+00:00

This was broken since link(2) doesn't dereference symbolic
links. Instead 'filename' becomes a symbolic link to the same file
that 'name' refers to.

This had the bad effect to create dangling symlinks in the case that
even can't be removed with perf-buildid-cache(1).

LKML-Reference: 
Signed-off-by: Franck Bui-Huu 
Signed-off-by: Arnaldo Carvalho de Melo

perf symbols: Stop using vmlinux files with no symbols

2010-12-16T11:41:45+00:00

Fail if the kernel image contains no symbol, allowing using other images
in the vmlinux search path that may have a usable symtab.

Acked-by: Masami Hiramatsu 
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Francis Moreau 
Cc: Franck Bui-Huu 
Cc: Masami Hiramatsu 
LPU-Reference: 
Signed-off-by: Franck Bui-Huu 
Signed-off-by: Arnaldo Carvalho de Melo

perf probe: Fix use of kernel image path given by 'k' option

2010-12-16T11:41:45+00:00

Users were not being able to have the explicitely specified vmlinux
pathname used, instead a search on the vmlinux path was always being
made.

Reported-by: Francis Moreau 
Acked-by: Masami Hiramatsu 
Cc: 2nddept-manager@sdl.hitachi.co.jp
Cc: Francis Moreau 
Cc: Franck Bui-Huu 
Cc: Masami Hiramatsu 
LPU-Reference: 
Signed-off-by: Franck Bui-Huu 
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Fix eternal wait for stillborn child

2010-12-06T17:13:38+00:00

When execvp fails to find the specified command on the path we won't get
SIGCHLD, so send a SIGUSR1 and exit right away.

Current situation would require a SIGINT performed by the user and would
produce meaningless summary.

Now:

[acme@emilia linux]$ ./foo
-bash: ./foo: No such file or directory
[acme@emilia linux]$ perf record ./foo
./foo: No such file or directory
[acme@emilia linux]$

Acked-by: Thomas Gleixner 
Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: Mike Galbraith 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Cc: Tom Zanussi 
Cc: Thomas Gleixner 
LKML-Reference: 
Signed-off-by: Arnaldo Carvalho de Melo

perf header: Don't assume there's no attr info if no sample ids is provided

2010-11-30T16:48:07+00:00

This primarily fixes perf-report, which didn't report the correct type
of event if perf-record was called to record one event different from
'cycles':

  $ perf record -e instructions true
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.007 MB perf.data (~295 samples) ]

  $ perf report | head -n1
    # Events: 7  cycles

LPU-Reference: 
Signed-off-by: Franck Bui-Huu