Eric Lee / smarc-fsl-linux-kernel

24 Dec, 2011

1 commit

  • efad14150   perf report: Accept fifos as input file ... Browse Code »

    The default input file for perf report is not handled the same way as
    perf record does it for its output file. This leads to unexpected
    behavior of perf report, etc. E.g.:

    # perf record -a -e cpu-cycles sleep 2 | perf report | cat
    failed to open perf.data: No such file or directory (try 'perf record' first)

    While perf record writes to a fifo, perf report expects perf.data to be
    read. This patch changes this to accept fifos as input file.

    Applies to the following commands:

    perf annotate
    perf buildid-list
    perf evlist
    perf kmem
    perf lock
    perf report
    perf sched
    perf script
    perf timechart

    Also fixes char const* -> const char* type declaration for filename
    strings.

    v2:
    * Prevent potential null pointer access to input_name in
    builtin-report.c. Needed due to removal of patch "perf report: Setup
    browser if stdout is a pipe"

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     

15 Mar, 2011

1 commit

  • 43adec955   perf evlist: New command to list the names of events present in a perf.data file ... Browse Code »

    [root@emilia ~]# perf record -a -e sched:* -e timer:timer* sleep 5
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.172 MB perf.data (~7530 samples) ]
    [root@emilia ~]# perf evlist
    sched:sched_kthread_stop
    sched:sched_kthread_stop_ret
    sched:sched_wakeup
    sched:sched_wakeup_new
    sched:sched_switch
    sched:sched_migrate_task
    sched:sched_process_free
    sched:sched_process_exit
    sched:sched_wait_task
    sched:sched_process_wait
    sched:sched_process_fork
    sched:sched_stat_wait
    sched:sched_stat_sleep
    sched:sched_stat_iowait
    sched:sched_stat_runtime
    sched:sched_pi_setprio
    timer:timer_init
    timer:timer_start
    timer:timer_expire_entry
    timer:timer_expire_exit
    timer:timer_cancel
    [root@emilia ~]#

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Mike Galbraith
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Cc: Tom Zanussi
    LKML-Reference:
    Signed-off-by: Arnaldo Carvalho de Melo

    Arnaldo Carvalho de Melo