linux-stable.git/tools/perf/Makefile.perf, branch linux-4.3.y

perf tools: Add Intel PT instruction decoder

2015-08-17T14:11:36+00:00

Add support for decoding instructions for Intel Processor Trace.  The
kernel x86 instruction decoder is copied for this.

This essentially provides intel_pt_get_insn() which takes a binary
buffer, uses the kernel's x86 instruction decoder to get details of the
instruction and then categorizes it for consumption by an Intel PT
decoder.

Signed-off-by: Adrian Hunter 
Cc: Jiri Olsa 
Link: http://lkml.kernel.org/r/1439450095-30122-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

2015-07-21T05:58:06+00:00

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

New features:

  - Allow filtering out of perf's PID via 'perf record --exclude-perf'. (Wang Nan)

  - 'perf trace' now supports syscall groups, like strace, i.e:

      $ trace -e file touch file

    Will expand 'file' into multiple, file related, syscalls. More work needed to
    add extra groups for other syscall groups, and also to complement what was
    added for the 'file' group, included as a proof of concept. (Arnaldo Carvalho de Melo)

  - Add lock_pi stresser to 'perf bench futex', to test the kernel code
    related to FUTEX_(UN)LOCK_PI. (Davidlohr Bueso)

User visible fixes:

  - Apply --filter to all events in a glob matching, not just the last one. (Wang Nan)

Documentation changes:

  - Document setting '-e pmu/period=N/' in the 'perf record' man page. (Kan Liang)

Infrastructure changes:

  - 'perf probe' code simplifications and movements to separate files. (Masami Hiramatsu)

  - Fix makefile generation under 'dash'. (Sergei Trofimovich)

Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Ingo Molnar

perf trace: Support 'strace' syscall event groups

2015-07-20T18:16:32+00:00

I.e.:

  $ cat ~/share/perf-core/strace/groups/file
  access
  chmod
  creat
  execve
  faccessat
  getcwd
  lstat
  mkdir
  open
  openat
  quotactl
  readlink
  rename
  rmdir
  stat
  statfs
  symlink
  unlink
  $

Then, on a quiet desktop, try running this and then moving your mouse to
see the deluge of mouse related activity:

  # perf probe 'vfs_getname=getname_flags:72 pathname=filename:string'
  Added new event:
    probe:vfs_getname    (on getname_flags:72 with pathname=filename:string)

  You can now use it in all perf tools, such as:

	perf record -e probe:vfs_getname -aR sleep 1
  #
  # trace --ev probe:vfs_getname --filter-pids 2232 -e file
   0.042 (0.042 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
   0.042 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/xterm")
   0.100 (0.100 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
   0.142 (0.018 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
   0.142 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/index.theme")
   0.192 (0.069 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
   0.230 (0.017 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
   0.230 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/usr/share/icons/Adwaita/cursors/xterm")
   0.253 (0.041 ms): mousetweaks/2235  ... [continued]: open()) = 14
   0.459 (0.008 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
   0.459 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/left_side")
   0.468 (0.017 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory

Need to combine that raw_syscalls:sys_enter(open) + probe:vfs_getname +
raw_syscalls:sys_exit(open) sequence...

Now, if you're bored, please write some more syscall groups, like the ones
in 'strace' and send it our way :-)

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Milian Wolff 
Cc: Namhyung Kim 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-a42xklu59lcbxp7bbnic74a8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Really allow to specify custom CC, AR or LD

2015-07-15T14:57:28+00:00

Commit 5ef7bbb09f7b ("perf tools: Allow to specify custom linker
command") was meant to enable usage non $(CROSS_COMPILE)ld linker during
perf building.

But implementation didn't take into account the fact that LD is a
pre-defined variable in GNU Make. I.e. it is always defined.

Which means there's no point to check "LD ?= ..." because it will never
succeed.

And so LD will be either that explicitly passed to make like this:

 ------->8-------
 make LD=path_to_my_ld ...
 ------->8-------
 or default value, which is host's "ld".

Latter leads to failure of cross-linkage because instead of cross linker
"$(CROSS_COMPILE)ld" host's "ld" is used.

Fortunately there's a way to do correct substitution of $(CROSS_COMPILE)ld
with user defined LD on command-line.

As a reference was used implementation in "tools/lib/traceevent/Makefile".

Build tested for x86_64 and ARC.

Thanks Jiri for this hint.

Signed-off-by: Alexey Brodkin 
Fixes: 5ef7bbb09f7b ("perf tools: Allow to specify custom linker command")
Cc: Aaro Koskinen 
Cc: Jiri Olsa 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Vineet Gupta 
Cc: Vineet Gupta 
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1436864720-26316-1-git-send-email-abrodkin@synopsys.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Allow to specify custom linker command

2015-07-01T20:53:50+00:00

Allow to specify custom linker command. This fixes MIPS64 builds for
64-bit userspace as it will allow to pass a linker using the correct
linker flags for 64-bit ABI (by default GNU binutils ld will assume
N32).

Signed-off-by: Aaro Koskinen 
Acked-by: Jiri Olsa 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1435751683-18500-2-git-send-email-aaro.koskinen@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Create config.detected into OUTPUT directory

2015-07-01T20:53:49+00:00

Create config.detected into OUTPUT directory instead of source
directory.

This fixes parallel builds that share the same source directory.

Signed-off-by: Aaro Koskinen 
Acked-by: Jiri Olsa 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1435751683-18500-1-git-send-email-aaro.koskinen@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Move libtraceevent dynamic list to separated LDFLAGS variable

2015-06-17T19:29:25+00:00

Commit e3d09ec8126fe2c9a3ade661e2126e215ca27a80 ("tools lib traceevent:
Export dynamic symbols used by traceevent plugins") adds libtraceevent
dynamic list directly into LDFLAGS, which makes all targets depend on
that list through LDFLAGS.

This is not good since some of targets like libgtk.so doesn't use plugin
at all, but require the existance of that list because of linker
options.

This patch isolates the -Xlink option into LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS,
makes only perf and perf.so use it.

Signed-off-by: Wang Nan 
Acked-by: Jiri Olsa 
Cc: He Kuang 
Cc: Masami Hiramatsu 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Zefan Li 
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1434552389-89144-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Fix python/perf.so compiling error

2015-06-16T13:34:38+00:00

'make build-test' finds an error that make_python_perf_so fails due to
missing of libtraceevent-dynamic-list:

 '.../python2' util/setup.py \
   --quiet build_ext; \
   mkdir -p python && \
   cp python_ext_build/lib/perf.so python/
   /path/to/ld: cannot open linker script file /path/to/kernel/tools/lib/traceevent/libtraceevent-dynamic-list: No such file or directory
   collect2: error: ld returned 1 exit status
   error: command 'x86_64-linux-gcc' failed with exit status 1
   cp: cannot stat 'python_ext_build/lib/perf.so': No such file or directory
   make[3]: *** [python/perf.so] Error 1
   make[2]: *** [python/perf.so] Error 2
     test: test -f ./python/perf.so
     make[1]: *** [make_python_perf_so] Error 1
     make: *** [build-test] Error 2
     make: Leaving directory `/path/to/kernel/tools/perf'

This is caused by commit e3d09ec8126fe2c9a3ade661e2126e215ca27a80
("tools lib traceevent: Export dynamic symbols used by traceevent
plugins") that, it adds the list file to LDFLAGS but forgot to add it to
dependency list of python/perf.so.

This patch fixes this problem.

Signed-off-by: Wang Nan 
Acked-by: Jiri Olsa 
Cc: He Kuang 
Cc: Peter Zijlstra 
Cc: Zefan Li 
Link: http://lkml.kernel.org/r/1434079031-123162-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent: Export dynamic symbols used by traceevent plugins

2015-06-08T13:30:31+00:00

Traceevent plugins need dynamic symbols exported from libtraceevent.a,
otherwise a dlopen error will occur during plugins loading.

This patch uses dynamic-list-file to export dynamic symbols which will
be used in plugins to perf executable.

The problem is covered up if feature-libpython is enabled, because
PYTHON_EMBED_LDOPTS contains '-Xlinker --export-dynamic' which adds all
symbols to the dynamic symbol table. So we should reproduce the problem
by setting NO_LIBPYTHON=1.

Before this patch:

  (Prepare plugins)
  $ ls /root/.traceevent/plugins/
  plugin_sched_switch.so
  plugin_function.so
  ...

  $ perf record -e 'ftrace:function' ls

  $ perf script
    Warning: could not load plugin '/mnt/data/root/.traceevent/plugins/plugin_sched_switch.so'
    /root/.traceevent/plugins/plugin_sched_switch.so: undefined symbol: pevent_unregister_event_handler

    Warning: could not load plugin '/root/.traceevent/plugins/plugin_function.so'
    /root/.traceevent/plugins/plugin_function.so: undefined symbol: warning
    ...
           :1049  1049 [000]  9666.754487: ftrace:function:  ffffffff8118bc50 <-- ffffffff8118c5b3
           :1049  1049 [000]  9666.754487: ftrace:function:  ffffffff818e2440 <-- ffffffff8118bc75
           :1049  1049 [000]  9666.754487: ftrace:function:  ffffffff8106eee0 <-- ffffffff811212e2

After this patch:

  $ perf record -e 'ftrace:function' ls
  $ perf script
           :1049  1049 [000]  9666.754487: ftrace:function: __set_task_comm
           :1049  1049 [000]  9666.754487: ftrace:function:    _raw_spin_lock
           :1049  1049 [000]  9666.754487: ftrace:function: task_tgid_nr_ns
           ...

Signed-off-by: He Kuang 
Acked-by: Jiri Olsa 
Cc: Peter Zijlstra 
Cc: Wang Nan 
Link: http://lkml.kernel.org/r/1432819735-35040-1-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Separate the tests and tools in installation

2015-05-27T15:21:43+00:00

This refactors out install-bin to install-tests and install-tools so
that downstream could opt to only install the tools, and not the tests.

Signed-off-by: Nam T. Nguyen 
Acked-by: Jiri Olsa 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Simon Que 
Link: http://lkml.kernel.org/r/1431974247-22275-1-git-send-email-namnguyen@chromium.org
Signed-off-by: Arnaldo Carvalho de Melo