Doug / smarc-fsl-linux-kernel

12 Jun, 2009

1 commit

  • bbd36e5e6   perf record: Explicity program a default counter ... Browse Code »

    Up until now record has worked on the assumption that type=0, config=0
    was a suitable configuration - which it is. Lets make this a little more
    explicit and more readable via the use of proper symbols.

    [ Impact: cleanup ]

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

    Peter Zijlstra
     

11 Jun, 2009

3 commits

  • f4dbfa8f3   perf_counter: Standardize event names ... Browse Code »

    Pure renames only, to PERF_COUNT_HW_* and PERF_COUNT_SW_*.

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

    Peter Zijlstra
     
  • 729ff5e2a   perf_counter tools: Clean up u64 usage ... Browse Code »

    A build error slipped in:

    builtin-report.c: In function ‘hist_entry__fprintf’:
    builtin-report.c:711: error: format ‘%12d’ expects type ‘int’, but argument 3 has type ‘uint64_t’

    Because we got a bit sloppy with those types. uint64_t really sucks,
    because there's no printf format for it. So standardize on __u64
    instead - for all types that go to or come from the ABI (which is __u64),
    or for values that need to be large enough even on 32-bit.

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

    Ingo Molnar
     
  • ea1900e57   perf_counter tools: Normalize data using per sample period data ... Browse Code »

    When we use variable period sampling, add the period to the sample
    data and use that to normalize the samples.

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

    Peter Zijlstra
     

10 Jun, 2009

2 commits

  • f7b7c26e0   perf_counter tools: Propagate signals properly ... Browse Code »

    Currently report and stat catch SIGINT (and others) without altering
    their exit state. This means that things like:

    while :; do perf stat ./foo ; done

    Loops become hard-to-interrupt, because bash never sees perf terminate
    due to interruption. Fix this.

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

    Peter Zijlstra
     
  • 4502d77c1   perf_counter tools: Small frequency related fixes ... Browse Code »

    Create the counter in a disabled state and only enable it after we
    mmap() the buffer, this allows us to see the first few samples (and
    observe the frequency ramp).

    Furthermore, print the period in the verbose report.

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

    Peter Zijlstra
     

07 Jun, 2009

3 commits

  • 30c806a09   perf_counter tools: Handle kernels with !CONFIG_PERF_COUNTER ... Browse Code »

    If perf is run on a !CONFIG_PERF_COUNTER kernel right now it
    bails out with no messages or with confusing messages.

    Standardize this case some more and explain the situation.

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

    Ingo Molnar
     
  • 3da297a60   perf record: Fall back to cpu-clock-ticks if no PMU ... Browse Code »

    On architectures/CPUs without PMU support but with perfcounters
    enabled 'perf record' currently fails because it cannot create a
    cycle based hw-perfcounter.

    Fall back to the cpu-clock-tick sw-perfcounter in this case, which
    is hrtimer based and will always work (as long as perfcounters
    are enabled).

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

    Ingo Molnar
     
  • 864709302   perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ ... Browse Code »

    Several people have suggested that 'perf' has become a full-fledged
    tool that should be moved out of Documentation/. Move it to the
    (new) tools/ directory.

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

    Ingo Molnar