1. 26 Feb, 2015 2 commits
    • Ingo Molnar's avatar
      Merge tag 'perf-core-for-mingo' of... · 0afb1704
      Ingo Molnar authored
      Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
      
      Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
      
      New user selectable features:
      
        - Support recording running/enabled time in 'perf record' (Andi Kleen)
      
        - New tool: 'perf data' for converting perf.data to other formats,
          initially for the CTF (Common Trace Format) from LTTng (Jiri Olsa, Sebastian Siewior)
      
      User visible changes:
      
        - Only insert blank duration bracket when tracing syscalls in 'perf trace' (Arnaldo Carvalho de Melo)
      
        - Filter out the trace pid when no threads are specified in 'perf trace' (Arnaldo Carvalho de Melo)
      
        - Add 'perf trace' man page entry for --event (Arnaldo Carvalho de Melo)
      
        - Dump stack on segfaults in 'perf trace' (Arnaldo Carvalho de Melo)
      
      Infrastructure changes:
      
        - Introduce set_filter_pid and set_filter_pids methods in the evlist class (Arnaldo Carvalho de Melo)
      
        - Some perf_session untanglement patches, removing the need to pass a
          perf_session instance for things that are related to evlists, so that
          tools that don't deal with perf.data files like trace in live mode can
          make use of the ordered_events class (Arnaldo Carvalho de Melo)
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      0afb1704
    • Ingo Molnar's avatar
      e9e4e443
  2. 25 Feb, 2015 5 commits
    • Sebastian Andrzej Siewior's avatar
      perf data: Add a 'perf' prefix to the generic fields · 54cf776a
      Sebastian Andrzej Siewior authored
      Some of the tracers bring their own id or pid fields and we can end up
      having two of them. This patch adds a "perf_" prefix to the 'generic'
      fields so we avoid a clash of the member names.
      
      The change is visible in the babeltrace output:
      
      Before:
        $ babeltrace ./ctf-data/
        [03:19:13.962131936] (+0.000001935) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 8 }
        [03:19:13.962133732] (+0.000001796) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 114 }
        ...
      
      Now:
        $ babeltrace ./ctf-data/
        [03:19:13.962131936] (+0.000001935) cycles: { }, { perf_ip = 0xFFFFFFFF8105443A, perf_tid = 20714, perf_pid = 20714, perf_period = 8 }
        [03:19:13.962133732] (+0.000001796) cycles: { }, { perf_ip = 0xFFFFFFFF8105443A, perf_tid = 20714, perf_pid = 20714, perf_period = 114 }
        ...
      Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
      Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jeremie Galarneau <jgalar@efficios.com>
      Cc: Jiri Olsa <jolsa@kernel.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1424470628-5969-5-git-send-email-jolsa@kernel.orgSigned-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      54cf776a
    • Jiri Olsa's avatar
      perf data: Add perf data to CTF conversion support · edbe9817
      Jiri Olsa authored
      Adding 'perf data convert' to convert perf data file into different
      format. This patch adds support for CTF format conversion.
      
      To convert perf.data into CTF run:
        $ perf data convert --to-ctf=./ctf-data/
        [ perf data convert: Converted 'perf.data' into CTF data './ctf-data/' ]
        [ perf data convert: Converted and wrote 11.268 MB (100230 samples) ]
      
      The command will create CTF metadata out of perf.data file (or one
      specified via -i option) and then convert all sample events into single
      CTF stream.
      
      Each sample_type bit is translated into separated CTF event field apart
      from following exceptions:
      
        PERF_SAMPLE_RAW          - added in next patch
        PERF_SAMPLE_READ         - TODO
        PERF_SAMPLE_CALLCHAIN    - TODO
        PERF_SAMPLE_BRANCH_STACK - TODO
        PERF_SAMPLE_REGS_USER    - TODO
        PERF_SAMPLE_STACK_USER   - TODO
      
        $ perf --debug=data-convert=2 data convert ...
      
      The converted CTF data could be analyzed by CTF tools, like babletrace
      or tracecompass [1].
      
        $ babeltrace ./ctf-data/
        [03:19:13.962125533] (+?.?????????) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 }
        [03:19:13.962130001] (+0.000004468) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 1 }
        [03:19:13.962131936] (+0.000001935) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 8 }
        [03:19:13.962133732] (+0.000001796) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 114 }
        [03:19:13.962135557] (+0.000001825) cycles: { }, { ip = 0xFFFFFFFF8105443A, tid = 20714, pid = 20714, period = 2087 }
        [03:19:13.962137627] (+0.000002070) cycles: { }, { ip = 0xFFFFFFFF81361938, tid = 20714, pid = 20714, period = 37582 }
        [03:19:13.962161091] (+0.000023464) cycles: { }, { ip = 0xFFFFFFFF8124218F, tid = 20714, pid = 20714, period = 600246 }
        [03:19:13.962517569] (+0.000356478) cycles: { }, { ip = 0xFFFFFFFF811A75DB, tid = 20714, pid = 20714, period = 1325731 }
        [03:19:13.969518008] (+0.007000439) cycles: { }, { ip = 0x34080917B2, tid = 20714, pid = 20714, period = 1144298 }
      
      The following members to the ctf-environment were decided to be added to
      distinguish and specify perf CTF data:
      
        - domain
      
          It says "kernel" because it contains a kernel trace (not to be
          confused with a user space like lttng-ust does)
      
        - tracer_name
      
          It says perf. This can be used to distinguish between lttng and perf
          CTF based trace.
      
        - version
      
          The kernel version from stream. In addition to release, this is what
          it looks like on a Debian kernel:
      
            release = "3.14-1-amd64";
            version = "3.14.0";
      
      [1] http://projects.eclipse.org/projects/tools.tracecompassSigned-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jeremie Galarneau <jgalar@efficios.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1424470628-5969-4-git-send-email-jolsa@kernel.orgSigned-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      edbe9817
    • Jiri Olsa's avatar
      perf tools: Add new 'perf data' command · 2245bf14
      Jiri Olsa authored
      Adding new 'perf data' command to provide operations over data files.
      
      The 'perf data convert' sub command is coming in following patch, but
      there's possibility for other useful commands like 'perf data ls' (to
      display perf data file in directory in ls style).
      Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jeremie Galarneau <jgalar@efficios.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1424470628-5969-3-git-send-email-jolsa@kernel.orgSigned-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2245bf14
    • Jiri Olsa's avatar
      perf tools: Add feature check for libbabeltrace · 53d0a573
      Jiri Olsa authored
      Adding feature check for babeltrace library [1], which will be used for
      perf data file CTF [2] conversion in following patches.
      
      The babeltrace library is now automatically detected as standard
      feature. It's possible to specify LIBBABELTRACE_DIR make variable to
      specify location of installed libbabeltrace, like:
      
        $ make LIBBABELTRACE_DIR=/opt/libbabeltrace/
          BUILD:   Doing 'make -j4' parallel build
      
        Auto-detecting system features:
        ...                         dwarf: [ on  ]
        ...                         glibc: [ on  ]
        ...                          gtk2: [ on  ]
        ...                      libaudit: [ on  ]
        ...                        libbfd: [ on  ]
        ...                        libelf: [ on  ]
        ...                       libnuma: [ on  ]
        ...                       libperl: [ on  ]
        ...                     libpython: [ on  ]
        ...                      libslang: [ on  ]
        ...                     libunwind: [ on  ]
        ...                 libbabeltrace: [ on  ]
        ...            libdw-dwarf-unwind: [ on  ]
        ...                          zlib: [ on  ]
        ...     DWARF post unwind library: libunwind
      
      NOTE The installation of the [1] to to used by above make:
           $ git clone git://git.efficios.com/babeltrace.git
           $ cd babeltrace
           $ vim README
           $ ./bootstrap
           $ ./configure --prefix=/opt/libbabeltrace
           $ make prefix=/opt/libbabeltrace
           $ sudo make install prefix=/opt/libbabeltrace
      
      Please make sure that the /opt/libbabeltrace/lib directory is in your
      LD_LIBRARY_PATH:
      
       $ export LD_LIBRARY_PATH=/opt/libbabeltrace/lib
      
      [1] babeltrace - http://www.efficios.com/babeltrace
      [2] Common Trace Format - http://www.efficios.com/ctfSigned-off-by: default avatarJiri Olsa <jolsa@kernel.org>
      Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Reviewed-by: default avatarDavid Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jeremie Galarneau <jgalar@efficios.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Cc: Wang Nan <wangnan0@huawei.com>
      Link: http://lkml.kernel.org/r/1424470628-5969-2-git-send-email-jolsa@kernel.orgSigned-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
      [ Added missing babeltrace build instructions ]
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      53d0a573
    • Andi Kleen's avatar
      perf record: Support recording running/enabled time · 85c273d2
      Andi Kleen authored
      Add an option to perf record to record running/enabled time for read
      events, similar to what stat does.
      
      This is useful to understand multiplexing problems.
      
      Right now the report support is not great, but at least report -D
      already supports it.
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Link: http://lkml.kernel.org/r/1424819620-16043-1-git-send-email-andi@firstfloor.org
      [ Fixed the Documentation entry to match the OPT_BOOLEAN one ]
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      85c273d2
  3. 24 Feb, 2015 3 commits
  4. 23 Feb, 2015 16 commits
    • Arnaldo Carvalho de Melo's avatar
      perf ordered_events: Stop using tool->ordered_events · 28083681
      Arnaldo Carvalho de Melo authored
      To figure out if ordered_events are being used when doing a flush
      operation, it is enough to check if there were in fact some events
      queued, i.e. look at oe->nr_events.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-1c5r404vy766kt5nflv88uag@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      28083681
    • Linus Torvalds's avatar
      Linux 4.0-rc1 · c517d838
      Linus Torvalds authored
      .. after extensive statistical analysis of my G+ polling, I've come to
      the inescapable conclusion that internet polls are bad.
      
      Big surprise.
      
      But "Hurr durr I'ma sheep" trounced "I like online polls" by a 62-to-38%
      margin, in a poll that people weren't even supposed to participate in.
      Who can argue with solid numbers like that? 5,796 votes from people who
      can't even follow the most basic directions?
      
      In contrast, "v4.0" beat out "v3.20" by a slimmer margin of 56-to-44%,
      but with a total of 29,110 votes right now.
      
      Now, arguably, that vote spread is only about 3,200 votes, which is less
      than the almost six thousand votes that the "please ignore" poll got, so
      it could be considered noise.
      
      But hey, I asked, so I'll honor the votes.
      c517d838
    • Linus Torvalds's avatar
      Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 · feaf2229
      Linus Torvalds authored
      Pull ext4 fixes from Ted Ts'o:
       "Ext4 bug fixes.
      
        We also reserved code points for encryption and read-only images (for
        which the implementation is mostly just the reserved code point for a
        read-only feature :-)"
      
      * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
        ext4: fix indirect punch hole corruption
        ext4: ignore journal checksum on remount; don't fail
        ext4: remove duplicate remount check for JOURNAL_CHECKSUM change
        ext4: fix mmap data corruption in nodelalloc mode when blocksize < pagesize
        ext4: support read-only images
        ext4: change to use setup_timer() instead of init_timer()
        ext4: reserve codepoints used by the ext4 encryption feature
        jbd2: complain about descriptor block checksum errors
      feaf2229
    • Linus Torvalds's avatar
      Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · be5e6616
      Linus Torvalds authored
      Pull more vfs updates from Al Viro:
       "Assorted stuff from this cycle.  The big ones here are multilayer
        overlayfs from Miklos and beginning of sorting ->d_inode accesses out
        from David"
      
      * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (51 commits)
        autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
        procfs: fix race between symlink removals and traversals
        debugfs: leave freeing a symlink body until inode eviction
        Documentation/filesystems/Locking: ->get_sb() is long gone
        trylock_super(): replacement for grab_super_passive()
        fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
        Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
        VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
        SELinux: Use d_is_positive() rather than testing dentry->d_inode
        Smack: Use d_is_positive() rather than testing dentry->d_inode
        TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR()
        Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode
        Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb
        VFS: Split DCACHE_FILE_TYPE into regular and special types
        VFS: Add a fallthrough flag for marking virtual dentries
        VFS: Add a whiteout dentry type
        VFS: Introduce inode-getting helpers for layered/unioned fs environments
        Infiniband: Fix potential NULL d_inode dereference
        posix_acl: fix reference leaks in posix_acl_create
        autofs4: Wrong format for printing dentry
        ...
      be5e6616
    • Arnaldo Carvalho de Melo's avatar
      perf session: Remove perf_session from dump_event · 9fa8727a
      Arnaldo Carvalho de Melo authored
      All it wants is session->evlist.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-6w9663gka3jb1j1rfxxd5jcq@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      9fa8727a
    • Arnaldo Carvalho de Melo's avatar
      perf session: Remove perf_session from some deliver event routines · 313e53b0
      Arnaldo Carvalho de Melo authored
      Further untangling perf_session from plain event delivery routines.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-cvz8e6pwyogs4w14582iis9w@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      313e53b0
    • Arnaldo Carvalho de Melo's avatar
      perf session: Remove perf_session from warn_errors signature · ccda068f
      Arnaldo Carvalho de Melo authored
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-pxxm1liohog3d6i826x8sud8@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ccda068f
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Adopt events_stats from perf_session · 75be989a
      Arnaldo Carvalho de Melo authored
      For tools that don't deal with perf.data files, thus do not need to
      use perf_session.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-kglq67gvauq9tak02a4se00r@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      75be989a
    • Arnaldo Carvalho de Melo's avatar
      perf session: Remove wrappers to machines__find · 54245fdc
      Arnaldo Carvalho de Melo authored
      Start to untangle session from delivering samples, as there are
      tools that want to use ordered_events and don't use perf_session at all.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-rn4pk3pjxd78sgzrkn19tktp@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      54245fdc
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Separate routine that handles an event from the one that reads it · ddbb1b13
      Arnaldo Carvalho de Melo authored
      Because we need to use ordered_events in some cases, so we will need to
      first have them in a queue, order that queue, and then process the
      event.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-cmkw9zgoh0z4r218957ftp1a@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ddbb1b13
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Add man page entry for --event · 77c92582
      Arnaldo Carvalho de Melo authored
      Forgot to do it when adding the feature.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-mx152b6x9cgknhw91vsyjlnd@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      77c92582
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Introduce --filter-pids · f078c385
      Arnaldo Carvalho de Melo authored
      When tracing in X we get event loops due to the tracing activity, i.e.
      updates to a gnome-terminal that generate syscalls for X.org, etc.
      
      To get a more useful view of what is happening, syscall wise, system
      wide, we need to filter those, like in:
      
       # ps ax|egrep '981|2296|1519' | grep -v egrep
         981 tty1 Ss+ 5:40 /usr/bin/Xorg :0 -background none ...
        1519 ?    Sl  2:22 /usr/bin/gnome-shell
        2296 ?    Sl  4:16 /usr/libexec/gnome-terminal-server
       #
      
       # trace -e write --filter-pids 981,2296,1519
          0.385 ( 0.021 ms): goa-daemon/2061 write(fd: 1</dev/null>, buf: 0x7fbeb017b000, count: 136) = 136
          0.922 ( 0.014 ms): goa-daemon/2061 write(fd: 1</dev/null>, buf: 0x7fbeb017b000, count: 140) = 140
       5006.525 ( 0.029 ms): goa-daemon/2061 write(fd: 1</dev/null>, buf: 0x7fbeb017b000, count: 136) = 136
       5007.235 ( 0.023 ms): goa-daemon/2061 write(fd: 1</dev/null>, buf: 0x7fbeb017b000, count: 140) = 140
       5177.646 ( 0.018 ms): rtkit-daemon/782 write(fd: 5<anon_inode:[eventfd]>, buf: 0x7f7eea70be88, count: 8) = 8
       8314.497 ( 0.004 ms): gsd-locate-poi/2084 write(fd: 5<anon_inode:[eventfd]>, buf: 0x7fffe96af7b0, count: 8) = 8
       8314.518 ( 0.002 ms): gsd-locate-poi/2084 write(fd: 5<anon_inode:[eventfd]>, buf: 0x7fffe96af0e0, count: 8) = 8
       ^C#
      
      When this option is used the tracer pid is also filtered.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-f5qmiyy7c0uxdm21ncatpeek@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f078c385
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Introduce set_filter_pids method · be199ada
      Arnaldo Carvalho de Melo authored
      We need to filter multiple pids in trace, i.e. trace itself,
      gnome-terminal, X.org, etc.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-frtpkg7qapqwf7asa35wf8am@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      be199ada
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Filter out the trace pid when no threads are specified · 241b057c
      Arnaldo Carvalho de Melo authored
      To avoid tracing the tracer.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-shmwd1khzpaobr3i0j1ygapg@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      241b057c
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Introduce set_filter_pid method · cfd70a26
      Arnaldo Carvalho de Melo authored
      To filter out events for a certain pid, for instance, when tracing
      system wide, so that the tracer itself doesn't creates an event loop.
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-byoia9dzu4gmkdv87etnd9zf@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      cfd70a26
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Only insert blank duration bracket when tracing syscalls · 0808921a
      Arnaldo Carvalho de Melo authored
      When printing just events, i.e. '--no-sys --ev some:events' it makes no
      sense to waste screen space.
      
      Before:
      
       # trace --no-sys --ev probe:*
       84481.704 (         ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/services")
       84481.892 (         ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/services")
       84482.230 (         ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/resolv.conf")
       84482.481 (         ): probe:vfs_getname:(ffffffff811ed023) pathname="/etc/hosts")
       85097.725 (         ): probe:vfs_getname:(ffffffff811ed023) pathname="/root"
       #
      
      After:
      
       # trace --no-sys --ev probe:*
       0.000 probe:vfs_getname:(ffffffff811ed023) pathname="/root")
       1.711 probe:vfs_getname:(ffffffff811ed023) pathname="/etc/localtime")
       2.103 probe:vfs_getname:(ffffffff811ed023) pathname="/etc/localtime")
      ^C#
      
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Borislav Petkov <bp@suse.de>
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Don Zickus <dzickus@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Stephane Eranian <eranian@google.com>
      Link: http://lkml.kernel.org/n/tip-jhryxgnam8zecq0q0wsy6pyb@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      0808921a
  5. 22 Feb, 2015 14 commits