Eric Lee / smarc-ti-linux-kernel

12 Dec, 2014

1 commit

14 Aug, 2014

3 commits

  • 60b0896cc   perf evlist: Add perf_evlist__set_tracking_event() ... Browse Code »

    Add a function to change which event is used to track mmap, comm and
    task events.

    This is needed with Instruction Tracing because the Instruction Tracing
    event must come first but cannot be used for tracking because it will be
    disabled under some circumstances.

    Signed-off-by: Adrian Hunter
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1406786474-9306-10-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     
  • 46ec69add   perf tools: Fix probing the kernel API with cpu-wide events ... Browse Code »

    Fall back to probing with the current pid if cpu-wide probing fails.
    This primarily affects the setting of comm_exec flag when the user is
    un-privileged and /proc/sys/kernel/perf_event_paranoid > 0.

    The change to comm_exec can be observed by using -vv with perf record
    and a kernel that supports comm_exec.

    Signed-off-by: Adrian Hunter
    Acked-by: Jiri Olsa
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1407855871-15024-4-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     
  • c6fa35659   perf tools: Fix one of the probe events to exclude kernel ... Browse Code »

    When probing the kernel API the kernel should be excluded otherwise the
    probe will fail for users with insufficient privilege to profile the
    kernel.

    Signed-off-by: Adrian Hunter
    Acked-by: Jiri Olsa
    Acked-by: Namhyung Kim
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1407855871-15024-3-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     

18 Jul, 2014

1 commit

  • 57480d2cd   perf tools: Enable close-on-exec flag on perf file descriptor ... Browse Code »

    In commit a21b0b354d4a ('perf: Introduce a flag to enable
    close-on-exec in perf_event_open()'), flag PERF_FLAG_FD_CLOEXEC
    was added to perf_event_open(2) syscall to allows userspace
    to atomically enable close-on-exec behavor when creating
    the file descriptor.

    This patch makes perf tools use the new flag if supported
    by the kernel, so that the event file descriptors got
    automatically closed if perf tool exec a sub-command.

    Signed-off-by: Yann Droneaud
    Cc: Andi Kleen
    Cc: Arnaldo Carvalho de Melo
    Cc: Ingo Molnar
    Cc: Jiri Olsa
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/n/1404160127-7475-1-git-send-email-ydroneaud@opteya.com
    Signed-off-by: Jiri Olsa

    Yann Droneaud
     

17 Jul, 2014

1 commit

  • 39e09d40b   perf record: Select comm_exec flag if supported ... Browse Code »

    The comm_exec flag on the attribute can later be found in the perf.data
    file allowing a tool to know in advance if the captured data has the
    flag.

    Signed-off-by: Adrian Hunter
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1405332185-4050-5-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     

18 Feb, 2014

1 commit

  • cd0cfad74   perf tools: Move fs.* to lib/api/fs/ ... Browse Code »

    Move to generic library and kill magic.h as it is needed only in fs.h.

    Signed-off-by: Borislav Petkov
    Cc: Adrian Hunter
    Cc: Andi Kleen
    Cc: Arjan van de Ven
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Pekka Enberg
    Cc: Peter Zijlstra
    Cc: Robert Richter
    Cc: Stanislav Fomichev
    Cc: Stephane Eranian
    Cc: Steven Rostedt
    Link: http://lkml.kernel.org/r/1386605664-24041-3-git-send-email-bp@alien8.de
    Signed-off-by: Arnaldo Carvalho de Melo

    Borislav Petkov
     

13 Jan, 2014

1 commit

  • 0050f7aa1   perf evlist: Introduce evlist__for_each() & friends ... Browse Code »

    For the common evsel list traversal, so that it becomes more compact.

    Use the opportunity to start ditching the 'perf_' from 'perf_evlist__',
    as discussed, as the whole conversion touches a lot of places, lets do
    it piecemeal when we have the chance due to other work, like in this
    case.

    Cc: Adrian Hunter
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/n/tip-qnkx7dzm2h6m6uptkfk03ni6@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo

    Arnaldo Carvalho de Melo
     

20 Dec, 2013

1 commit

  • b40067964   perf tools: Rename 'perf_record_opts' to 'record_opts ... Browse Code »

    Reduce typing, functions use class__method convention, so unlikely to
    clash with other libraries.

    This actually was discussed in the "Link:" referenced message below.

    Cc: Adrian Hunter
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/20131112113427.GA4053@ghostprotocols.net
    Signed-off-by: Arnaldo Carvalho de Melo

    Arnaldo Carvalho de Melo
     

13 Dec, 2013

1 commit

  • c09ec6226   perf evlist: Add can_select_event() method ... Browse Code »

    Add a function to determine whether an event can be selected.

    This function is needed to allow a tool to automatically select
    additional events, but only if they are available.

    Signed-off-by: Adrian Hunter
    Cc: Andi Kleen
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1386765443-26966-18-git-send-email-alexander.shishkin@linux.intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     

06 Nov, 2013

1 commit

  • 714647bdc   perf tools: Check maximum frequency rate for record/top ... Browse Code »

    Adding the check for maximum allowed frequency rate defined in following
    file:

    /proc/sys/kernel/perf_event_max_sample_rate

    When we cross the maximum value we fail and display detailed error
    message with advise.

    $ perf record -F 3000 ls
    Maximum frequency rate (2000) reached.
    Please use -F freq option with lower value or consider
    tweaking /proc/sys/kernel/perf_event_max_sample_rate.

    In case user does not specify the frequency and the default value cross
    the maximum, we display warning and set the frequency value to the
    current maximum.

    $ perf record ls
    Lowering default frequency rate to 2000.
    Please consider tweaking /proc/sys/kernel/perf_event_max_sample_rate.

    Same messages are used for 'perf top'.

    Signed-off-by: Jiri Olsa
    Cc: Adrian Hunter
    Cc: Corey Ashford
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1383660887-1734-4-git-send-email-jolsa@redhat.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Jiri Olsa
     

30 Aug, 2013

2 commits

  • 75562573b   perf tools: Add support for PERF_SAMPLE_IDENTIFIER ... Browse Code »

    Enable parsing of samples with sample format bit PERF_SAMPLE_IDENTIFIER.
    In addition, if the kernel supports it, prefer it to selecting
    PERF_SAMPLE_ID thereby allowing non-matching sample types.

    Signed-off-by: Adrian Hunter
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1377591794-30553-8-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter
     
  • faf967068   perf evlist: Move perf_evlist__config() to a new source file ... Browse Code »

    perf_evlist__config() must be moved to a separate source file to avoid
    Python link errors when adding support for PERF_SAMPLE_IDENTIFIER.

    It is appropriate to do this because perf_evlist__config() is a helper
    function for event recording. It is used by tools to apply recording
    options to perf_evlist. It is not used by the Python API.

    Signed-off-by: Adrian Hunter
    Acked-by: Namhyung Kim
    Cc: David Ahern
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Jiri Olsa
    Cc: Mike Galbraith
    Cc: Namhyung Kim
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1377591794-30553-7-git-send-email-adrian.hunter@intel.com
    Signed-off-by: Arnaldo Carvalho de Melo

    Adrian Hunter