Eric Lee / smarc-fsl-linux-kernel

11 Jan, 2012

1 commit

07 Jan, 2012

1 commit

  • e4e88f31b   Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc ... Browse Code »

    * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (185 commits)
    powerpc: fix compile error with 85xx/p1010rdb.c
    powerpc: fix compile error with 85xx/p1023_rds.c
    powerpc/fsl: add MSI support for the Freescale hypervisor
    arch/powerpc/sysdev/fsl_rmu.c: introduce missing kfree
    powerpc/fsl: Add support for Integrated Flash Controller
    powerpc/fsl: update compatiable on fsl 16550 uart nodes
    powerpc/85xx: fix PCI and localbus properties in p1022ds.dts
    powerpc/85xx: re-enable ePAPR byte channel driver in corenet32_smp_defconfig
    powerpc/fsl: Update defconfigs to enable some standard FSL HW features
    powerpc: Add TBI PHY node to first MDIO bus
    sbc834x: put full compat string in board match check
    powerpc/fsl-pci: Allow 64-bit PCIe devices to DMA to any memory address
    powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit
    offb: Fix setting of the pseudo-palette for >8bpp
    offb: Add palette hack for qemu "standard vga" framebuffer
    offb: Fix bug in calculating requested vram size
    powerpc/boot: Change the WARN to INFO for boot wrapper overlap message
    powerpc/44x: Fix build error on currituck platform
    powerpc/boot: Change the load address for the wrapper to fit the kernel
    powerpc/44x: Enable CRASH_DUMP for 440x
    ...

    Fix up a trivial conflict in arch/powerpc/include/asm/cputime.h due to
    the additional sparse-checking code for cputime_t.

    Linus Torvalds
     

04 Jan, 2012

5 commits

  • 9e183426b   perf kvm: Fix copy & paste error in description ... Browse Code »

    The --host option certainly enables host-data collection.

    Cc: Avi Kivity
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Joerg Roedel
    Cc: kvm@vger.kernel.org
    Link: http://lkml.kernel.org/r/1317816084-18026-5-git-send-email-gleb@redhat.com
    Signed-off-by: Gleb Natapov
    Signed-off-by: Joerg Roedel
    Signed-off-by: Arnaldo Carvalho de Melo

    Joerg Roedel
     
  • 466e2876b   perf script: Kill script_spec__delete ... Browse Code »

    As script_spec__delete() frees given struct script_spec it should not be
    called if we failed to allocate the struct. Also it's the only caller of
    the function, we can get rid of the function itself.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1325000151-4463-4-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 057a174a0   perf top: Fix a memory leak ... Browse Code »

    The 'buf' should be freed when symbol wasn't found too.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1325000151-4463-3-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 15e6392fe   perf stat: Introduce get_ratio_color() helper ... Browse Code »

    The get_ratio_color() returns appropriate color string based on @ratio.
    It helps reducing code duplication.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1325000151-4463-2-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 29c9862f1   perf session: Remove impossible condition check ... Browse Code »

    The 'size' cannot be 0 because it was set to 8 on the above line in case
    it was 0 and never changed.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1325000151-4463-1-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     

30 Dec, 2011

1 commit

24 Dec, 2011

14 commits

  • 37a058ea0   perf script: Add generic perl handler to process events ... Browse Code »
    43

    The current perf scripting facility only supports tracepoints. This
    patch implements a generic perl handler to support other events than
    tracepoints too.

    This patch introduces a function process_event() that is called by perf
    for each sample. The function is called with byte streams as arguments
    containing information about the event, its attributes, the sample and
    raw data. Perl's unpack() function can easily be used for byte decoding.
    The following is the default implementation for process_event() that can
    also be generated with perf script:

    # Packed byte string args of process_event():
    #
    # $event: union perf_event util/event.h
    # $attr: struct perf_event_attr linux/perf_event.h
    # $sample: struct perf_sample util/event.h
    # $raw_data: perf_sample->raw_data util/event.h

    sub process_event
    {
    my ($event, $attr, $sample, $raw_data) = @_;

    my @event = unpack("LSS", $event);
    my @attr = unpack("LLQQQQQLLQQ", $attr);
    my @sample = unpack("QLLQQQQQLL", $sample);
    my @raw_data = unpack("C*", $raw_data);

    use Data::Dumper;
    print Dumper \@event, \@attr, \@sample, \@raw_data;
    }

    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323969824-9711-4-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • b1e5a9bee   perf tools: Use for_each_set_bit() to iterate over feature flags ... Browse Code »

    This patch introduces the for_each_set_bit() macro and modifies feature
    implementation to use it.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-8-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • e20960c02   perf tools: Unify handling of features when writing feature section ... Browse Code »

    The features HEADER_TRACE_INFO and HEADER_BUILD_ID are handled
    different when writing the feature section. All other features are
    simply disabled on failure and writing the section goes on without
    returning an error. There is no reason for these special cases. This
    patch unifies handling of the features.

    This should be ok since all features can be parsed independently.
    Offset and size of a feature's block is stored in struct perf_file_
    section right after the data block of perf.data (see perf_session__
    write_header()). Thus, if a feature does not exist then other features
    can be processed anyway.

    Also moving special code for HEADER_BUILD_ID out to write_build_id().

    v2:
    * perf record throws an error now if buildids may not be generated,
    which can be disabled with the --no-buildid option.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-6-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 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
     
  • 1b5495043   perf tools: Moving code in some files ... Browse Code »

    Needed for later changes. No modified functionality.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-4-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 002c4fd92   perf tools: Fix out-of-bound access to struct perf_session ... Browse Code »

    If filename is NULL there is an out-of-bound access to struct
    perf_session if it would be used with perf_session__open(). Shouldn't
    actually happen in current implementation as filename is always !NULL.
    Fixing this by always null-terminating filename.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-3-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • f7a8a1336   perf tools: Continue processing header on unknown features ... Browse Code »

    A feature may be unknown if perf.data is created and parsed on different
    perf tool versions. This should not stop the header to be processed,
    instead continue processing it.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-2-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 8cdfa78a8   perf tools: Improve macros for struct feature_ops ... Browse Code »

    Reducing duplication and line size by extending function names for
    print and write from a single name.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Stephane Eranian
    Link: http://lkml.kernel.org/r/1323248577-11268-7-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 41d0d9334   perf: builtin-record: Document and check that mmap_pages must be a power of two. ... Browse Code »

    Now that we automatically point users at it, let's provide them some
    guidance so that they hopefully don't just get mysterious EINVAL's
    from the kernel.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324301972-22740-4-git-send-email-nelhage@nelhage.com
    Signed-off-by: Nelson Elhage
    [ committer note: Made it work after 50a682c ]
    Signed-off-by: Arnaldo Carvalho de Melo

    Nelson Elhage
     
  • 18e609390   perf: builtin-record: Provide advice if mmap'ing fails with EPERM. ... Browse Code »

    This failure is most likely due to running up against the
    kernel.perf_event_mlock_kb sysctl, so we can tell the user what to do to
    fix the issue.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324301972-22740-3-git-send-email-nelhage@nelhage.com
    Signed-off-by: Nelson Elhage
    Signed-off-by: Arnaldo Carvalho de Melo

    Nelson Elhage
     
  • f41612f43   perf tools: Fix truncated annotation ... Browse Code »

    I get such truncated annotation results in 'perf top':

    : Disassembly of section .text: ▒
    : ▒
    : ffffffff810966a8 : ▒
    4.94 : ffffffff810966a8: movslq %edi,%rdi ▒
    3.70 : ffffffff810966ab: mov $0x13700,%rax ▒
    0.00 : ffffffff810966b2: add -0x7e32cb00(,%rdi,8),%rax ▒
    8.64 : ffffffff810966ba: mov 0x7e0(%rax),%eax ▒
    82.72 : ffffffff810966c0: cltq ▒

    Note the missing 'retq' which is there in the original function:

    ffffffff810966a8 :
    ffffffff810966a8: 48 63 ff movslq %edi,%rdi
    ffffffff810966ab: 48 c7 c0 00 37 01 00 mov $0x13700,%rax
    ffffffff810966b2: 48 03 04 fd 00 35 cd add -0x7e32cb00(,%rdi,8),%rax
    ffffffff810966b9: 81
    ffffffff810966ba: 8b 80 e0 07 00 00 mov 0x7e0(%rax),%eax
    ffffffff810966c0: 48 98 cltq
    ffffffff810966c2: c3 retq

    ffffffff810966c3 :

    I'm using a fairly recent binutils:

    GNU objdump version 2.21.51.0.6-2.fc16 20110118

    AFAICS the bug is simply that sym->end points to the last byte
    of the symbol in question - while objdump's --stop-address
    expects the last byte plus 1 to disassemble the full range.

    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/20111223130804.GA24305@elte.hu
    Signed-off-by: Ingo Molnar
    Signed-off-by: Arnaldo Carvalho de Melo

    Ingo Molnar
     
  • 64aab93cd   perf script: look up thread using tid instead of pid ... Browse Code »

    This allows the thread name to be dispalyed when dumping
    events:
    myapp 25118 [000] 450385.538815: context-switches ...
    myapp:worker 25119 [000] 450385.538894: context-switches ...

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324578603-12762-4-git-send-email-dsahern@gmail.com
    Signed-off-by: David Ahern
    Signed-off-by: Arnaldo Carvalho de Melo

    David Ahern
     
  • f5faf7261   perf tools: Look up thread names for system wide profiling ... Browse Code »

    This handles multithreaded processes with named threads when doing
    system wide profiling: the comm for each thread is looked up allowing
    them to be different from the thread group leader.

    v2:
    - fixed sizeof arg to perf_event__get_comm_tgid

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324578603-12762-3-git-send-email-dsahern@gmail.com
    Signed-off-by: David Ahern
    Signed-off-by: Arnaldo Carvalho de Melo

    David Ahern
     
  • defd8d387   perf tools: Fix comm for processes with named threads ... Browse Code »

    perf does not properly handle monitoring of processes with named threads.
    For example:

    $ ps -C myapp -L
    PID LWP TTY TIME CMD
    25118 25118 ? 00:00:00 myapp
    25118 25119 ? 00:00:00 myapp:worker

    perf record -e cs -c 1 -fo /tmp/perf.data -p 25118 -- sleep 10
    perf report --stdio -i /tmp/perf.data
    100.00% myapp:worker [kernel.kallsyms] [k] perf_event_task_sched_out

    The process name is set to the name of the last thread it finds for the
    process.

    The Problem:
    perf-top and perf-record both create a thread_map of threads to be
    monitored. That map is used in perf_event__synthesize_thread_map which
    loops over the entries in thread_map and calls __event__synthesize_thread
    to generate COMM and MMAP events.

    __event__synthesize_thread calls perf_event__synthesize_comm which opens
    /proc/pid/status, reads the name of the task and its thread group id.
    That's all fine. The problem is that it then reads /proc/pid/task and
    generates COMM events for each task it finds - but using the name found
    in /proc/pid/status where pid is the thread of interest.

    The end result (looping over thread_map + synthesizing comm events for
    each thread each time) means the name of the last thread processed sets
    the name for all threads in the process - which is not good for
    multithreaded processes with named threads.

    The Fix:
    perf_event__synthesize_comm has an input argument (full) that decides
    whether to process task entries for each pid it is passed. It currently
    never set to 0 (perf_event__synthesize_comm has a single caller and it
    always passes the value 1). Let's fix that.

    Add the full input argument to __event__synthesize_thread which passes
    it to perf_event__synthesize_comm. For thread/process monitoring set full
    to 0 which means COMM and MMAP events are only generated for the pid
    passed to it. For system wide monitoring set full to 1 so that COMM events
    are generated for all threads in a process.

    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324578603-12762-2-git-send-email-dsahern@gmail.com
    Signed-off-by: David Ahern
    Signed-off-by: Arnaldo Carvalho de Melo

    David Ahern
     

22 Dec, 2011

1 commit

  • fb2baceb5   perf report: Fix usage string ... Browse Code »

    perf report does not take a command from command line.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-8-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     

21 Dec, 2011

4 commits

20 Dec, 2011

9 commits

  • cb8f4e9aa   perf events: Tidy up perf_event__preprocess_sample ... Browse Code »

    Use local variable 'dso' to reduce typing a bit and rearrange the if
    condition. Also NULL check of al->map in the condition is not necessary.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-7-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 5f9273d64   perf tools: Remove stale git headlines from top comment ... Browse Code »

    These files are part of PERF not GIT although they're come from there :)

    Cc: Ingo Molnar
    Cc: Johannes Schindelin
    Cc: Linus Torvalds
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323784323-2150-1-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 0161d82e9   perf tools: Fix a memory leak on perf_read_values_destroy ... Browse Code »

    After freeing each elements of the @values->value, we should free itself
    too.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-5-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • d74c896b7   perf symbols: Fix error path on symbol__init() ... Browse Code »

    The order of freeing comm_list and dso_list should be reversed.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-4-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 2b600f957   perf symbols: Get rid of duplicated snprintf() ... Browse Code »

    The 'path' variable is set on a upper line, don't need to do it again.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-3-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • 301b195db   perf evlist: Fix errno value reporting on failed mmap ... Browse Code »

    On failure, perf_evlist__mmap_per_{cpu,thread} will try to munmap()
    every map that doesn't have a NULL base. This will fail with EINVAL if
    one of them has base == MAP_FAILED, clobbering errno, so that
    perf_evlist__map will return EINVAL on any failure regardless of the
    root cause.

    Fix this by resetting failed maps to a NULL base.

    Acked-by: Namhyung Kim
    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1324301972-22740-2-git-send-email-nelhage@nelhage.com
    Signed-off-by: Nelson Elhage
    Signed-off-by: Arnaldo Carvalho de Melo

    Nelson Elhage
     
  • 6581f6e35   perf report: Document '--call-graph' for optional print_limit argument ... Browse Code »

    The '--call-graph' command line option can receive undocumented optional
    print_limit argument. Besides, use strtoul() to parse the option since
    its type is u32.

    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Link: http://lkml.kernel.org/r/1323703017-6060-2-git-send-email-namhyung@gmail.com
    Signed-off-by: Namhyung Kim
    Signed-off-by: Arnaldo Carvalho de Melo

    Namhyung Kim
     
  • f3bda2c9a   perf evsel: Fix uninitialized memory access to struct perf_sample ... Browse Code »
    88

    Memory in struct perf_sample is not fully initialized during parsing.
    Depending on sampling data some parts may left unchanged. Zero out
    struct perf_sample first to avoid access to uninitialized memory.

    Cc: Ingo Molnar
    Link: http://lkml.kernel.org/r/1323966762-8574-2-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 3e76ac78b   perf record: Add ability to record event period ... Browse Code »

    The problem is that when SAMPLE_PERIOD is not set, the kernel generates
    a number of samples in proportion to an event's period. Number of these
    samples may be too big and the kernel throttles all samples above a
    defined limit.

    E.g.: I want to trace when a process sleeps. I created a process which
    sleeps for 1ms and for 4ms. perf got 100 events in both cases.

    swapper 0 [000] 1141.371830: sched_stat_sleep: comm=foo pid=1801 delay=1386750 [ns]
    swapper 0 [000] 1141.369444: sched_stat_sleep: comm=foo pid=1801 delay=4499585 [ns]

    In the first case a kernel want to send 4499585 events and in the second
    case it wants to send 1386750 events. perf-reports shows that process
    sleeps in both places equal time.

    Instead of this we can get only one sample with an attribute period. As
    result we have less data transferring between kernel and user-space and
    we avoid throttling of samples.

    The patch "events: Don't divide events if it has field period" added a
    kernel part of this functionality.

    Acked-by: Arun Sharma
    Cc: Arun Sharma
    Cc: David Ahern
    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: devel@openvz.org
    Link: http://lkml.kernel.org/r/1324391565-1369947-1-git-send-email-avagin@openvz.org
    Signed-off-by: Andrew Vagin
    Signed-off-by: Arnaldo Carvalho de Melo

    Andrew Vagin
     

12 Dec, 2011

3 commits

  • 74eec26fa   perf tools: Add ability to synthesize event according to a sample ... Browse Code »

    It's the counterpart of perf_session__parse_sample.

    v2: fixed mistakes found by David Ahern.
    v3: s/data/sample/
    s/perf_event__change_sample/perf_event__synthesize_sample

    Reviewed-by: David Ahern
    Cc: Arun Sharma
    Cc: David Ahern
    Cc: Ingo Molnar
    Cc: Paul Mackerras
    Cc: Peter Zijlstra
    Cc: devel@openvz.org
    Link: http://lkml.kernel.org/r/1323266161-394927-3-git-send-email-avagin@openvz.org
    Signed-off-by: Andrew Vagin
    Signed-off-by: Arnaldo Carvalho de Melo

    Andrew Vagin
     
  • 317df650c   perf script: Implement option for system-wide profiling ... Browse Code »

    The option is documented in man perf-script but was not yet implemented:

    -a
    Force system-wide collection. Scripts run without a
    normally use -a by default, while scripts run
    with a normally don't - this option allows the
    latter to be run in system-wide mode.

    As with perf record you now can profile in system-wide mode for the
    runtime of a given command, e.g.:

    # perf script -a syscall-counts sleep 2

    Cc: Ingo Molnar
    Link: http://lkml.kernel.org/r/1322229925-10075-1-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     
  • 38efb539c   perf script: Fix mem leaks and NULL pointer checks around strdup()s ... Browse Code »

    Fix mem leaks and missing NULL pointer checks after strdup().

    And get_script_path() did not free __script_root in case of continue.

    Introduce a helper function get_script_root().

    Cc: Ingo Molnar
    Link: http://lkml.kernel.org/r/1322217520-3287-1-git-send-email-robert.richter@amd.com
    Signed-off-by: Robert Richter
    Signed-off-by: Arnaldo Carvalho de Melo

    Robert Richter
     

08 Dec, 2011

1 commit