Eric Lee / smarc-fsl-linux-kernel

05 Jun, 2010

1 commit

  • 45de34bbe   perf buildid: add perfconfig option to specify buildid cache dir ... Browse Code »

    This patch adds the ability to specify an alternate directory to store the
    buildid cache (buildids, copy of binaries). By default, it is hardcoded to
    $HOME/.debug. This directory contains immutable data. The layout of the
    directory is such that no conflicts in filenames are possible. A modification
    in a file, yields a different buildid and thus a different location in the
    subdir hierarchy.

    You may want to put the buildid cache elsewhere because of disk space
    limitation or simply to share the cache between users. It is also useful for
    remote collect vs. local analysis of profiles.

    This patch adds a new config option to the perfconfig file. Under the tag
    'buildid', there is a dir option. For instance, if you have:

    $ cat /etc/perfconfig
    [buildid]
    dir = /var/cache/perf-buildid

    All buildids and binaries are be saved in the directory specified. The perf
    record, buildid-list, buildid-cache, report, annotate, and archive commands
    will it to pull information out.

    The option can be set in the system-wide perfconfig file or in the
    $HOME/.perfconfig file.

    Cc: David S. Miller
    Cc: Frédéric Weisbecker
    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Cc: Tom Zanussi
    LKML-Reference:
    Signed-off-by: Stephane Eranian
    Signed-off-by: Arnaldo Carvalho de Melo

    Stephane Eranian
     

14 Apr, 2010

1 commit

  • c05556421   perf: Fix endianness argument compatibility with OPT_BOOLEAN() and introduce OPT_INCR() ... Browse Code »

    Parsing an option from the command line with OPT_BOOLEAN on a
    bool data type would not work on a big-endian machine due to the
    manner in which the boolean was being cast into an int and
    incremented. For example, running 'perf probe --list' on a
    PowerPC machine would fail to properly set the list_events bool
    and would therefore print out the usage information and
    terminate.

    This patch makes OPT_BOOLEAN work as expected with a bool
    datatype. For cases where the original OPT_BOOLEAN was
    intentionally being used to increment an int each time it was
    passed in on the command line, this patch introduces OPT_INCR
    with the old behaviour of OPT_BOOLEAN (the verbose variable is
    currently the only such example of this).

    I have reviewed every use of OPT_BOOLEAN to verify that a true
    C99 bool was passed. Where integers were used, I verified that
    they were only being used for boolean logic and changed them to
    bools to ensure that they would not be mistakenly used as ints.
    The major exception was the verbose variable which now uses
    OPT_INCR instead of OPT_BOOLEAN.

    Signed-off-by: Ian Munsie
    Acked-by: David S. Miller
    Cc: # NOTE: wont apply to .3[34].x cleanly, please backport
    Cc: Git development list
    Cc: Ian Munsie
    Cc: Peter Zijlstra
    Cc: Paul Mackerras
    Cc: Arnaldo Carvalho de Melo
    Cc: KOSAKI Motohiro
    Cc: Hitoshi Mitake
    Cc: Rusty Russell
    Cc: Frederic Weisbecker
    Cc: Eric B Munson
    Cc: Valdis.Kletnieks@vt.edu
    Cc: WANG Cong
    Cc: Thiago Farina
    Cc: Masami Hiramatsu
    Cc: Xiao Guangrong
    Cc: Jaswinder Singh Rajput
    Cc: Arjan van de Ven
    Cc: OGAWA Hirofumi
    Cc: Mike Galbraith
    Cc: Tom Zanussi
    Cc: Anton Blanchard
    Cc: John Kacur
    Cc: Li Zefan
    Cc: Steven Rostedt
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Ian Munsie
     

21 Jan, 2010

1 commit

  • ef12a1413   perf buildid-cache: Add new command to manage build-id cache ... Browse Code »

    For now it just has operations to examine a given file, find its
    build-id and add or remove it to/from the cache.

    Useful, for instance, when adding binaries sent together with a
    perf.data file, so that we can add them to the cache and have
    the tools find it when resolving symbols.

    It'll also manage the size of the cache like 'ccache' does.

    Signed-off-by: Arnaldo Carvalho de Melo
    Cc: Frédéric Weisbecker
    Cc: Mike Galbraith
    Cc: Peter Zijlstra
    Cc: Paul Mackerras
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Arnaldo Carvalho de Melo