Commit Graph

321440 Commits

Author SHA1 Message Date
Feng Tang
fd6b858a1e perf scripts python: Pass event/thread/dso name and symbol info to event handler in python
Also as suggested by Arnaldo, pack all these parameters to a dictionary,
which is more expandable for adding new parameters while keeping the
compatibility for old scripts.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1344419875-21665-4-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:48:02 -03:00
Feng Tang
73994dc158 perf script: Replace "struct thread" with "struct addr_location" as a parameter for "process_event()"
Both perl and python script start processing events other than trace
points, and it's useful to pass the resolved symbol and the dso info to
the event handler in script for better analysis and statistics.

Struct thread is already a member of struct addr_location, using
addr_location will keep the thread info, while providing additional
symbol and dso info if exist, so that the script itself doesn't need to
bother to do the symbol resolving and dso searching work.

Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1344419875-21665-3-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:46:40 -03:00
Feng Tang
6a6daec2ae perf script: Add general python handler to process non-tracepoint events
This patch just follows Robert Richter's idea and the commit 37a058ea0
	"perf script: Add generic perl handler to process events"
to similarly add a python handler for general events other than tracepoints.

For non-tracepoint events, this patch will try to find a function named
"process_event" in the python script, and pass the event attribute,
perf_sample, raw_data in format of raw string. And the python script can
use "struct" module's unpack function to disasemble the needed info and process.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1344419875-21665-2-git-send-email-feng.tang@intel.com
[ committer note: Fixed up wrt da37896, i.e. pevent parm in script event handlers ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:45:33 -03:00
Robert Richter
2055fdaf87 perf list: Document precise event sampling for AMD IBS
Updating man perf-list.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-7-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:42:21 -03:00
Robert Richter
75bc5ca898 perf list: Update documentation about raw event setup
It was missing that only certain bit fields are passed to the config
value which confused users. Updating it.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-6-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:41:53 -03:00
Robert Richter
0cf260131c tools lib traceevent: Fix cast from pointer to integer for 32 bit
Fixing the integer cast reported by the following warning:

 tools/lib/traceevent/event-parse.c:3488:14: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-5-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:40:44 -03:00
Robert Richter
b527bab59b perf tools: Fix parsing of 64 bit raw config value for 32 bit
perf record fails on 32 bit with:

 invalid or unsupported event: 'r40000F7E0'

Fixing this by parsing 64 bit num values.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-4-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:39:56 -03:00
Robert Richter
2ede8303db perf tools: Fix lib/traceevent build dir with OUTPUT variable set
With the OUTPUT variable set the libtraceevent.a file is wrongly built
in the source directory:

 + make -d OUTPUT=/.../.build/perf-user/ DESTDIR=/.../.install/perf-user/
 ...
     Considering target file `../lib/traceevent//libtraceevent.a'.
      File `../lib/traceevent//libtraceevent.a' does not exist.
      Finished prerequisites of target file `../lib/traceevent//libtraceevent.a'.
     Must remake target `../lib/traceevent//libtraceevent.a'.
 Invoking recipe from Makefile:837 to update target `../lib/traceevent//libtraceevent.a'.
 Putting child 0x703850 (../lib/traceevent//libtraceevent.a) PID 8365 on the chain.
 Live child 0x703850 (../lib/traceevent//libtraceevent.a) PID 8365
     SUBDIR ../lib/traceevent/

 $ git clean -nxd
 Would remove tools/lib/traceevent/.event-parse.d
 Would remove tools/lib/traceevent/.parse-filter.d
 Would remove tools/lib/traceevent/.parse-utils.d
 Would remove tools/lib/traceevent/.trace-seq.d
 Would remove tools/lib/traceevent/event-parse.o
 Would remove tools/lib/traceevent/libtraceevent.a
 Would remove tools/lib/traceevent/parse-filter.o
 Would remove tools/lib/traceevent/parse-utils.o
 Would remove tools/lib/traceevent/trace-seq.o

This patch fixes this.

Note: Though this should already work with O=$outputdir we better use
the OUTPUT variable directly.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-3-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:37:41 -03:00
Robert Richter
e6b9783354 perf tools: Fix version file for perf documentation with OUTPUT variable set
Fixes the following:

 + make OUTPUT=/.../.build/perf-user/ DESTDIR=/.../.install/perf-user/ man install-man
 make -C Documentation man
 make[1]: Entering directory `/.../.source/linux.perf/tools/perf/Documentation'
 make[2]: Entering directory `/.../.source/linux.perf/tools/perf'
 make[2]: *** No rule to make target `PERF-VERSION-FILE'.  Stop.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1344361396-7237-2-git-send-email-robert.richter@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-08 12:36:49 -03:00
Arnaldo Carvalho de Melo
9782243353 perf script: Stop using pevent directly
We can get all that is needed using just event_format, that is available
via evsel->tp_format now.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-2hsr1686epa9f0vx4yg7z2zj@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:50:21 -03:00
Arnaldo Carvalho de Melo
7f7f8d0bea perf sched: Use perf_sample
To reduce the number of parameters passed to the various event handling
functions.

Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-fc537qykjjqzvyol5fecx6ug@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:46:19 -03:00
Arnaldo Carvalho de Melo
01d955244b perf lock: Use evsel->tp_format and perf_sample
To reduce the number of parameters passed to the various event handling
functions.

Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-bipk647rzq357yot9ao6ih73@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:45:53 -03:00
Arnaldo Carvalho de Melo
22ad798c37 perf kmem: Use evsel->tp_format and perf_sample
To reduce the number of parameters passed to the various event handling
functions.

Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-p936ngz06yo5h797ggsm7xru@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:44:20 -03:00
Arnaldo Carvalho de Melo
fcf65bf149 perf evsel: Cache associated event_format
We already lookup the associated event_format when reading the perf.data
header, so that we can cache the tracepoint name in evsel->name, so do
it a little further and save the event_format itself, so that we can
avoid relookups in tools that need to access it.

Change the tools to take the most obvious advantage, when they were
using pevent_find_event directly. More work is needed for further
removing the need of a pointer to pevent, such as when asking for event
field values ("common_pid" and the other common fields and per
event_format fields).

This is something that was planned but only got actually done when
Andrey Wagin needed to do this lookup at perf_tool->sample() time, when
we don't have access to pevent (session->pevent) to use with
pevent_find_event().

Cc: Andrey Wagin <avagin@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/n/tip-txkvew2ckko0b594ae8fbnyk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:43:37 -03:00
Arnaldo Carvalho de Melo
8b6ee4c5d4 perf header: Set the tracepoint names on PERF_RECORD_HEADER_TRACING_DATA
We only have access to pevent after processing that event, so set the
tracepoint names there.

Right now this isn't a problem as we're deferring resolving the
tracepoint names to when we process samples, but in the next patches we
will be doing it in advance, to avoid relookups, so do it earlier, as
soon as we process the tracing data event.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-tzb7srmsl7a6o3icw592iv2o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:36:16 -03:00
Arnaldo Carvalho de Melo
dc4552bf71 perf tools: Add dump_stack function
To help in debugging the tools, provides functionality roughly similar
to the function with the same name in the kernel.

Copied from glibc backtrace function man page.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6nw2sak21bqy8h1m2syyo816@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-07 23:32:05 -03:00
Arnaldo Carvalho de Melo
a7cb8863dd perf hists browser: Add verbose mode hotkey
Right now just shows the DSO name in callchain entries, to help debug
the DWARF CFI post unwind code.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-54gouunatugtfw92j6gddk45@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-06 11:56:54 -03:00
Ingo Molnar
8a06bf1400 perf/core improvements and fixes
. Prep work for the DWARF CFI post unwinder, so that it doesn't
   uses perf_session in lots of places, just evlist/evsel is enough.
 
 . Make clean brace expansion fix for some shells, from Palmer Cox
 
 . Warn user just once per guest kernel when not finding kernel info,
   from David Ahern
 
 . perf test fix from Jiri Olsa
 
 . Fix error handling on event creation in perf top, from David Ahern
 
 . Fix check on perf_target__strnerror, from Namhyung Kim
 
 . Save the whole cmdline, from David Ahern
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core fixes and some late updates from Arnaldo Carvalho de Melo:

 * Make clean brace expansion fix for some shells, from Palmer Cox

 * Warn user just once per guest kernel when not finding kernel info,
   from David Ahern

 * perf test fix from Jiri Olsa

 * Fix error handling on event creation in perf top, from David Ahern

 * Fix check on perf_target__strnerror, from Namhyung Kim

 * Save the whole cmdline, from David Ahern

 * Prep work for the DWARF CFI post unwinder, so that it doesn't
   uses perf_session in lots of places, just evlist/evsel is enough.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-08-05 12:39:12 +02:00
Linus Torvalds
e7882d6c40 Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS fixes and cleanups from Al Viro.

Most of this is the series to remove sync_supers() and the
->write_supers VFS callback from Artem Bityutskiy.  One commit to do the
actual removal work, a whole series of commits to fix up stale comments
etc all over the tree.

There's also a regression fix for an incorrect use of mnt_drop_write()
in do_dentry_open().

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  missed mnt_drop_write() in do_dentry_open()
  UBIFS: nuke pdflush from comments
  gfs2: nuke pdflush from comments
  drbd: nuke pdflush from comments
  nilfs2: nuke write_super from comments
  hfs: nuke write_super from comments
  vfs: nuke pdflush from comments
  jbd/jbd2: nuke write_super from comments
  btrfs: nuke pdflush from comments
  btrfs: nuke write_super from comments
  ext4: nuke pdflush from comments
  ext4: nuke write_super from comments
  ext3: nuke write_super from comments
  Documentation: fix the VM knobs descritpion WRT pdflush
  Documentation: get rid of write_super
  vfs: kill write_super and sync_supers
2012-08-04 08:32:46 -07:00
Al Viro
fe7c80518e missed mnt_drop_write() in do_dentry_open()
This one ought to be __mnt_drop_write(), to match __mnt_want_write()
in the beginning...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:41 +04:00
Artem Bityutskiy
5c57f20b82 UBIFS: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from UBIFS comments.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:41 +04:00
Artem Bityutskiy
e76e0ec984 gfs2: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from gfs comments.

Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:40 +04:00
Artem Bityutskiy
d97482ede2 drbd: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from drbd comments.

Cc: drbd-dev@lists.linbit.com
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:39 +04:00
Artem Bityutskiy
166ac34b74 nilfs2: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from ntfs.

Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:38 +04:00
Artem Bityutskiy
50640bcc0a hfs: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from hfs.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:38 +04:00
Artem Bityutskiy
0d5c3eba2e vfs: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from vfs comments.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:37 +04:00
Artem Bityutskiy
12810ad708 jbd/jbd2: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from various jbd and jbd2.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:36 +04:00
Artem Bityutskiy
b257031408 btrfs: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from btrfs comments.

Cc: Chris Mason <chris.mason@fusionio.com>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:35 +04:00
Artem Bityutskiy
34eaadaf22 btrfs: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from btrfs.

Cc: Chris Mason <chris.mason@fusionio.com>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:35 +04:00
Artem Bityutskiy
f6463b0da6 ext4: nuke pdflush from comments
The pdflush thread is long gone, so this patch removes references to pdflush
from ext4 comments.

Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:34 +04:00
Artem Bityutskiy
7652bdfcb5 ext4: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from ext3.

Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:33 +04:00
Artem Bityutskiy
d3009c6cff ext3: nuke write_super from comments
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from ext3.

Cc: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:32 +04:00
Artem Bityutskiy
6601fac822 Documentation: fix the VM knobs descritpion WRT pdflush
The pdflush thread is long gone, however we still mention it incorrectly in the
kernel documentation. This patch fixes the situation.

Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 12:15:09 +04:00
Artem Bityutskiy
34e5053fbe Documentation: get rid of write_super
The '->write_super' superblock method is gone, and this patch removes all the
references to 'write_super' from various pieces of the kernel documentation.

Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 01:25:20 +04:00
Artem Bityutskiy
f0cd2dbb6c vfs: kill write_super and sync_supers
Finally we can kill the 'sync_supers' kernel thread along with the
'->write_super()' superblock operation because all the users are gone.
Now every file-system is supposed to self-manage own superblock and
its dirty state.

The nice thing about killing this thread is that it improves power management.
Indeed, 'sync_supers' is a source of monotonic system wake-ups - it woke up
every 5 seconds no matter what - even if there were no dirty superblocks and
even if there were no file-systems using this service (e.g., btrfs and
journalled ext4 do not need it). So it was wasting power most of the time. And
because the thread was in the core of the kernel, all systems had to have it.
So I am quite happy to make it go away.

Interestingly, this thread is a left-over from the pdflush kernel thread which
was a self-forking kernel thread responsible for all the write-back in old
Linux kernels. It was turned into per-block device BDI threads, and
'sync_supers' was a left-over. Thus, R.I.P, pdflush as well.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-08-04 01:24:44 +04:00
Linus Torvalds
d8579fd834 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull ACPI and power management fixes from Len Brown:
 "A 3.3 sleep regression fixed, numa bugfix, plus some minor cleanups"

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  ACPI processor: Fix tick_broadcast_mask online/offline regression
  ACPI: Only count valid srat memory structures
  ACPI: Untangle a return statement for better readability
  ACPI / PCI: Do not try to acquire _OSC control if that is hopeless
  ACPI: delete _GTS/_BFS support
  ACPI/x86: revert 'x86, acpi: Call acpi_enter_sleep_state via an asmlinkage C function from assembler'
  ACPI: replace strlen("string") with sizeof("string") -1
  ACPI / PM: Fix build warning in sleep.c for CONFIG_ACPI_SLEEP unset
2012-08-03 14:10:00 -07:00
Linus Torvalds
d42d1dabf3 Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
Pull exofs update from Boaz Harrosh:
 "They are all mostly fixes, except the most important patch by Artem
  Bityutskiy which removes the use of s_dirt.  After this patch s_dirt
  can be completely removed from the tree."

* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  ore: Fix out-of-bounds access in _ios_obj()
  exofs: Use proper max_IO calculations from ore
  exofs: Fix __r4w_get_page when offset is beyond i_size
  exofs: stop using s_dirt
  exofs: readpage_strip: Add a BUG_ON to check for PageLocked(page)
2012-08-03 13:24:07 -07:00
Linus Torvalds
d79095eee2 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM bug fixes from Marcelo Tosatti:
 - Fix DS/ES segment register corruption on x86_32.
 - Fix kvmclock wallclock migration offset.
 - Fix PIT interrupt ACK vs system reset logic bug.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: Fix ds/es corruption on i386 with preemption
  KVM: x86: apply kvmclock offset to guest wall clock time
  KVM: PIC: call ack notifiers for irqs that are dropped form irr
2012-08-03 11:21:29 -07:00
Linus Torvalds
d667319a12 Sound fixes for 3.6-rc2
A bunch of small fixes for ASoC, mainly against regressions due to the
 defaulting regmap i/o, in addition to a HD-audio fixup.
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Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A bunch of small fixes for ASoC, mainly against regressions due to the
  defaulting regmap i/o, in addition to a HD-audio fixup."

* tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: core: Fix check before defaulting to regmap
  ALSA: hda - Support dock on Lenovo Thinkpad T530 with ALC269VC
  ASoC: wm8962: Allow VMID time to fully ramp
  ASoC: AC97 doesn't use regmap by default
  ASoC: sgtl5000: enable VAG_POWER for LINE_IN
  ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements
  ASoC: omap: Add missing modules aliases to get sound working on omap devices
  sound: tegra_alc5632: Adjust to of_get_named_gpio() change
  sound: tegra_wm8903: Adjust to of_get_named_gpio() change
  ASoC: mc13783: Provide codec->control_data
  ASoC: ux500: Include the correct header files
  ASoC: wm8994: Hold runtime PM reference while handling mic and jack IRQs
  ASoC: sgtl5000: remove unneeded snd_soc_dapm_new_widgets in probe
  ASoC: mxs-saif: set a base clock rate for EXTMASTER mode work
  ASoC: mxs-saif: fix clock prepare and enable unbalance issue
  ASoC: wm8994: Ensure there are enough BCLKs for four channels
2012-08-03 11:20:19 -07:00
Linus Torvalds
c4e62d6785 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fixes from Ingo Molnar:
 "A couple of futex fixes from Darren Hart: two bugs reported by Dave
  Jones (found with his trinity test) and Dan Carpenter through static
  analysis.  The third found while debugging the first two."

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Forbid uaddr == uaddr2 in futex_wait_requeue_pi()
  futex: Fix bug in WARN_ON for NULL q.pi_state
  futex: Test for pi_mutex on fault in futex_wait_requeue_pi()
2012-08-03 11:00:26 -07:00
Linus Torvalds
1ca0049f2c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Various fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86-64, kcmp: The kcmp system call can be common
  arch/x86/kernel/kdebugfs.c: Ensure a consistent return value in error case
  x86/mce: Add quirk for instruction recovery on Sandy Bridge processors
  x86/mce: Move MCACOD defines from mce-severity.c to <asm/mce.h>
  x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs
  x86, nops: Missing break resulting in incorrect selection on Intel
  x86: CONFIG_CC_STACKPROTECTOR=y is no longer experimental
2012-08-03 10:59:36 -07:00
Linus Torvalds
ddc5057c1c Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
 "One regression fix, and a couple of cleanups that clean up the code
  flow in areas that had high-profile bugs recently."

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time: Remove all direct references to timekeeper
  time: Clean up offs_real/wall_to_mono and offs_boot/total_sleep_time updates
  time: Clean up stray newlines
  time/jiffies: Rename ACTHZ to SHIFTED_HZ
  time/jiffies: Allow CLOCK_TICK_RATE to be undefined
  time: Fix casting issue in tk_set_xtime and tk_xtime_add
2012-08-03 10:58:57 -07:00
Linus Torvalds
fcc1d2a9ce Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
 "Fixes and two late cleanups"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cleanups: Add load balance cpumask pointer to 'struct lb_env'
  sched: Fix comment about PREEMPT_ACTIVE bit location
  sched: Fix minor code style issues
  sched: Use task_rq_unlock() in __sched_setscheduler()
  sched/numa: Add SD_PERFER_SIBLING to CPU domain
2012-08-03 10:58:13 -07:00
Linus Torvalds
bd463a0606 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Fix merge window fallout and fix sleep profiling (this was always
  broken, so it's not a fix for the merge window - we can skip this one
  from the head of the tree)."

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/trace: Add ability to set a target task for events
  perf/x86: Fix USER/KERNEL tagging of samples properly
  perf/x86/intel/uncore: Make UNCORE_PMU_HRTIMER_INTERVAL 64-bit
2012-08-03 10:57:20 -07:00
Linus Torvalds
148311d2ad Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar.

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Allow irq chips to mark themself oneshot safe
2012-08-03 10:56:44 -07:00
Linus Torvalds
d97e1dcde5 KGDB/KDB/usb-dbgp fixes and cleanups
usb-dbgp - increase the controller wait time to come out of halt.
    kdb - Remove unused KDB_FLAG_ONLY_DO_DUMP code and cpu in more prompt
    debug core - pass NMI type on archs that provide NMI types
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Merge tag 'for_linux-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb

Pull KGDB/KDB/usb-dbgp fixes and cleanups from Jason Wessel:
 "There are no new features, those will be delayed to the 3.7 window.
  There are only fixes/cleanup against the usual kernel churn and we are
  removing more lines than we add:

   - usb-dbgp - increase the controller wait time to come out of halt.
   - kdb - Remove unused KDB_FLAG_ONLY_DO_DUMP code and cpu in more prompt
   - debug core - pass NMI type on archs that provide NMI types"

* tag 'for_linux-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
  USB: echi-dbgp: increase the controller wait time to come out of halt.
  kernel/debug: Make use of KGDB_REASON_NMI
  kdb: Remove cpu from the more prompt
  kdb: Remove unused KDB_FLAG_ONLY_DO_DUMP
2012-08-03 10:53:47 -07:00
Linus Torvalds
587a9e1f95 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Make sys_atomic_cmpxchg_32 work on classic m68k
  m68k/apollo: Rename "timer" to "apollo_timer"
  zorro: Remove unused zorro_bus.devices
  m68k: Remove never used asm/shm.h
  m68k/sun3: Remove unselectable code in prom_init()
  m68k: Use asm-generic version of <asm/sections.h>
  m68k: Replace m68k-specific _[se]bss by generic __bss_{start,stop}
  mtd/uclinux: Use generic __bss_stop instead of _ebss
  m68knommu: Allow ColdFire CPUs to use unaligned accesses
  m68k: Remove five unused headers
  m68k: CPU32 does not support unaligned accesses
  m68k: Introduce config option CPU_HAS_NO_UNALIGNED
  m68k: delay, muldi3 - Use CONFIG_CPU_HAS_NO_MULDIV64
  m68k: Move CPU_HAS_* config options
  m68k: Remove duplicate FPU config option
  m68knommu: Clean up printing of sections
  m68k: Use asm-generic version of <asm/types.h>
  m68k: Use Kbuild logic to import asm-generic headers
2012-08-03 10:52:41 -07:00
Palmer Cox
7f309ed645 perf tools: Remove brace expansion from clean target
The clean target uses brace expansion to remove some generated files. However,
the default shells on many systems do not support this feature resulting in
some generated files not being removed by clean.

Signed-off-by: Palmer Cox <p@lmercox.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1343598883-17907-1-git-send-email-p@lmercox.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-03 10:46:32 -03:00
David Ahern
6b118e92cc perf kvm top: Limit guest kernel info message to once
'perf kvm top' shows a continual flurry of:
    Can't find guest [5201]'s kernel information

if it can't find the guest info and with a lot of VMs running a user has no
chance of reading them all. Limit message to once per guest.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1343709095-7089-5-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-03 10:43:47 -03:00
David Ahern
70b40c4a43 perf tools: Introduce intlist
Built on rblist - like strlist. Used in the next patch.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1343709095-7089-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-08-03 10:42:25 -03:00