linux.git/tools/perf/Makefile, branch v2.6.34

perf, probe-finder: Build fix on Debian

2010-04-02T20:46:26+00:00

Building chokes with:

 In file included from /usr/include/gelf.h:53,
                 from /usr/include/elfutils/libdw.h:53,
                 from util/probe-finder.h:61,
                 from util/probe-finder.c:39:
 /usr/include/libelf.h:98: error: expected specifier-qualifier-list before 'off64_t'
 [...]

Signed-off-by: Borislav Petkov 
Acked-by: Masami Hiramatsu 
LKML-Reference: <20100329164755.GA16034@aftab>
Signed-off-by: Ingo Molnar

perf: Make the install relative to DESTDIR if specified

2010-03-11T13:08:11+00:00

Without this change, the install path is relative to
prefix/DESTDIR where prefix is automatically set to $HOME.

This can produce unexpected results. For example:

  make -C tools/perf DESTDIR=/home/jkacur/tmp install-man

creates the directory:		/home/jkacur/home/jkacur/tmp/share/...
instead of the expected:	/home/jkacur/tmp/share/...

Signed-off-by: John Kacur 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
Cc: Frederic Weisbecker 
Cc: Tom Zanussi 
Cc: Kyle McMartin 
Cc: 
LKML-Reference: <1268312220-12880-1-git-send-email-jkacur@redhat.com>
Signed-off-by: Ingo Molnar

perf tools: Fix sparse CPU numbering related bugs

2010-03-11T12:36:53+00:00

At present, the perf subcommands that do system-wide monitoring
(perf stat, perf record and perf top) don't work properly unless
the online cpus are numbered 0, 1, ..., N-1.  These tools ask
for the number of online cpus with sysconf(_SC_NPROCESSORS_ONLN)
and then try to create events for cpus 0, 1, ..., N-1.

This creates problems for systems where the online cpus are
numbered sparsely.  For example, a POWER6 system in
single-threaded mode (i.e. only running 1 hardware thread per
core) will have only even-numbered cpus online.

This fixes the problem by reading the /sys/devices/system/cpu/online
file to find out which cpus are online.  The code that does that is in
tools/perf/util/cpumap.[ch], and consists of a read_cpu_map()
function that sets up a cpumap[] array and returns the number of
online cpus.  If /sys/devices/system/cpu/online can't be read or
can't be parsed successfully, it falls back to using sysconf to
ask how many cpus are online and sets up an identity map in cpumap[].

The perf record, perf stat and perf top code then calls
read_cpu_map() in the system-wide monitoring case (instead of
sysconf) and uses cpumap[] to get the cpu numbers to pass to
perf_event_open.

Signed-off-by: Paul Mackerras 
Cc: Anton Blanchard 
Cc: Peter Zijlstra 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <20100310093609.GA3959@brick.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar

perf probe: Use elfutils-libdw for analyzing debuginfo

2010-02-25T16:49:29+00:00

Newer gcc introduces newer & richer debuginfo, and only libdw
in elfutils project can support it. So perf probe moves onto
elfutils-libdw from libdwarf.

Changes in v3:
 - Cast Dwarf_Addr/Dwarf_Word to uintmax_t for printf-formats.
 - Recover a sign-prefix which was removed in v2 by mistake.

Changes in v2:
 - Fix a type-casting bug in Makefile.
 - Cast Dwarf_Addr/Dwarf_Word to unsigned long long for printf-formats.

Signed-off-by: Masami Hiramatsu 
Cc: systemtap 
Cc: DLE 
Cc: Frederic Weisbecker 
Cc: Arnaldo Carvalho de Melo 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Mike Galbraith 
Cc: K.Prasad 
Cc: Ulrich Drepper 
Cc: Roland McGrath 
Cc: Frederic Weisbecker 
Cc: Ananth N Mavinakayanahalli 
LKML-Reference: <20100225133542.6725.34724.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar

perf/scripts: Add syscall tracing scripts

2010-02-25T03:07:48+00:00

Adds a set of scripts that aggregate system call totals and system
call errors.  Most are Python scripts that also test basic
functionality of the new Python engine, but there's also one Perl
script added for comparison and for reference in some new
Documentation contained in a later patch.

Signed-off-by: Tom Zanussi 
Cc: Ingo Molnar 
Cc: Steven Rostedt 
Cc: Keiichi KII 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <1264580883-15324-8-git-send-email-tzanussi@gmail.com>
Signed-off-by: Frederic Weisbecker

perf/scripts: Add Python scripting engine

2010-02-25T03:07:29+00:00

Add base support for Python scripting to perf trace.

Signed-off-by: Tom Zanussi 
Cc: Ingo Molnar 
Cc: Steven Rostedt 
Cc: Keiichi KII 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <1264580883-15324-6-git-send-email-tzanussi@gmail.com>
Signed-off-by: Frederic Weisbecker

perf/scripts: Move Perl scripting files to scripting-engines dir

2010-02-23T19:49:55+00:00

Create a scripting-engines directory to contain scripting engine
implementation code, in anticipation of the addition of new scripting
support.  Also removes trace-event-perl.h.

Signed-off-by: Tom Zanussi 
Cc: Ingo Molnar 
Cc: Steven Rostedt 
Cc: Keiichi KII 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Arnaldo Carvalho de Melo 
LKML-Reference: <1264580883-15324-5-git-send-email-tzanussi@gmail.com>
Signed-off-by: Frederic Weisbecker

perf build-id: Move the routine to find DSOs with hits to the lib

2010-02-04T08:33:26+00:00

Because 'perf record' will have to find the build-ids in after
we stop recording, so as to reduce even more the impact in the
workload while we do the measurement.

Signed-off-by: Arnaldo Carvalho de Melo 
Cc: Frédéric Weisbecker 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
LKML-Reference: <1265223128-11786-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar

perf lock: Introduce new tool "perf lock", for analyzing lock statistics

2010-01-31T08:08:26+00:00

Adding new subcommand "perf lock" to perf.

I have a lot of remaining ToDos, but for now perf lock can
already provide minimal functionality for analyzing lock
statistics.

Signed-off-by: Hitoshi Mitake 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
LKML-Reference: <1264851813-8413-12-git-send-email-mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar

perf: Add util/include/linuxhash.h to include hash.h of kernel

2010-01-31T07:27:53+00:00

linux/hash.h, hash header of kernel, is also useful for perf.

util/include/linuxhash.h includes linux/hash.h, so we can use
hash facilities (e.g. hash_long()) in perf now.

Signed-off-by: Hitoshi Mitake 
Cc: Peter Zijlstra 
Cc: Paul Mackerras 
Cc: Frederic Weisbecker 
LKML-Reference: <1264851813-8413-3-git-send-email-mitake@dcl.info.waseda.ac.jp>
Signed-off-by: Ingo Molnar