Hi Ingo,
Please consider pulling,
- Arnaldo
The following changes since commit 152fefa921535665f95840c08062844ab2f5593e:
Merge tag 'perf-core-for-mingo' of
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
(2013-01-31 10:20:14 +0100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
tags/perf-core-for-mingo
for you to fetch changes up to 2ac3634a7e1c8eedc961030c87c5c36ebd5bbf8e:
perf: Document the ABI of perf sysfs entries (2013-01-31 13:07:51 -0300)
----------------------------------------------------------------
perf/core improvements and fixes:
. Make some POWER7 events available in sysfs, equivalent to
what was done on x86, from Sukadev Bhattiprolu.
. Add event group view, from Namyung Kim:
To use it, 'perf record' should group events when recording. And then perf
report parses the saved group relation from file header and prints them
together if --group option is provided. You can use 'perf evlist' command to
see event group information:
$ perf record -e '{ref-cycles,cycles}' noploop 1
[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.385 MB perf.data (~16807 samples) ]
$ perf evlist --group
{ref-cycles,cycles}
With this example, default perf report will show you each event
separately like this:
$ perf report
...
# group: {ref-cycles,cycles}
# ========
# Samples: 3K of event 'ref-cycles'
# Event count (approx.): 3153797218
#
# Overhead Command Shared Object Symbol
# ........ ....... ................. ..........................
99.84% noploop noploop [.] main
0.07% noploop ld-2.15.so [.] strcmp
0.03% noploop [kernel.kallsyms] [k] timerqueue_del
0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu
0.02% noploop [kernel.kallsyms] [k] account_user_time
0.01% noploop [kernel.kallsyms] [k] __alloc_pages_nodemask
0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe
# Samples: 3K of event 'cycles'
# Event count (approx.): 3722310525
#
# Overhead Command Shared Object Symbol
# ........ ....... ................. .........................
99.76% noploop noploop [.] main
0.11% noploop [kernel.kallsyms] [k] _raw_spin_lock
0.06% noploop [kernel.kallsyms] [k] find_get_page
0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu
0.02% noploop [kernel.kallsyms] [k] rcu_check_callbacks
0.02% noploop [kernel.kallsyms] [k] __current_kernel_time
0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe
In this case the event group information will be shown in the end of
header area. So you can use --group option to enable event group view.
$ perf report --group
...
# group: {ref-cycles,cycles}
# ========
# Samples: 7K of event 'anon group { ref-cycles, cycles }'
# Event count (approx.): 6876107743
#
# Overhead Command Shared Object Symbol
# ................ ....... ................. ..........................
99.84% 99.76% noploop noploop [.] main
0.07% 0.00% noploop ld-2.15.so [.] strcmp
0.03% 0.00% noploop [kernel.kallsyms] [k] timerqueue_del
0.03% 0.03% noploop [kernel.kallsyms] [k] sched_clock_cpu
0.02% 0.00% noploop [kernel.kallsyms] [k] account_user_time
0.01% 0.00% noploop [kernel.kallsyms] [k] __alloc_pages_nodemask
0.00% 0.00% noploop [kernel.kallsyms] [k] native_write_msr_safe
0.00% 0.11% noploop [kernel.kallsyms] [k] _raw_spin_lock
0.00% 0.06% noploop [kernel.kallsyms] [k] find_get_page
0.00% 0.02% noploop [kernel.kallsyms] [k] rcu_check_callbacks
0.00% 0.02% noploop [kernel.kallsyms] [k] __current_kernel_time
As you can see the Overhead column now contains both of ref-cycles and
cycles and header line shows group information also - 'anon group {
ref-cycles, cycles }'. The output is sorted by period of group leader
first.
If perf.data file doesn't contain group information, this --group
option does nothing. So if you want enable event group view by
default you can set it in ~/.perfconfig file:
$ cat ~/.perfconfig
[report]
group = true
It can be overridden with command line if you want:
$ perf report --no-group
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
----------------------------------------------------------------
Arnaldo Carvalho de Melo (2):
perf top: Stop using exit()
perf top: Delete maps on exit
Namhyung Kim (18):
perf tools: Keep group information
perf tests: Add group test conditions
perf header: Add HEADER_GROUP_DESC feature
perf report: Make another loop for linking group hists
perf hists: Resort hist entries using group members for output
perf ui/hist: Consolidate hpp helpers
perf hists browser: Convert hpp helpers to a function
perf gtk/browser: Convert hpp helpers to a function
perf ui/hist: Add support for event group view
perf hists browser: Move coloring logic to hpp functions
perf hists browser: Add suppport for event group view
perf gtk/browser: Add support for event group view
perf gtk/browser: Trim column header string when event group enabled
perf report: Bypass non-leader events when event group is enabled
perf report: Show group description when event group is enabled
perf report: Add --group option
perf report: Add report.group config option
perf evlist: Add --group option
Sukadev Bhattiprolu (5):
perf/Power7: Use macros to identify perf events
perf: Make EVENT_ATTR global
perf/POWER7: Make generic event translations available in sysfs
perf/POWER7: Make some POWER7 events available in sysfs
perf: Document the ABI of perf sysfs entries
.../testing/sysfs-bus-event_source-devices-events | 62 +++++
arch/powerpc/include/asm/perf_event_server.h | 26 ++
arch/powerpc/perf/core-book3s.c | 12 +
arch/powerpc/perf/power7-pmu.c | 80 +++++-
arch/x86/kernel/cpu/perf_event.c | 13 +-
include/linux/perf_event.h | 11 +
tools/perf/Documentation/perf-evlist.txt | 4 +
tools/perf/Documentation/perf-report.txt | 3 +
tools/perf/builtin-evlist.c | 7 +
tools/perf/builtin-record.c | 3 +
tools/perf/builtin-report.c | 47 +++-
tools/perf/builtin-top.c | 62 +++--
tools/perf/tests/parse-events.c | 28 ++
tools/perf/ui/browsers/hists.c | 217 ++++++++++++---
tools/perf/ui/gtk/hists.c | 130 +++++++--
tools/perf/ui/hist.c | 306 ++++++++++-----------
tools/perf/ui/stdio/hist.c | 2 +
tools/perf/util/evlist.c | 7 +-
tools/perf/util/evlist.h | 1 +
tools/perf/util/evsel.c | 49 +++-
tools/perf/util/evsel.h | 16 ++
tools/perf/util/header.c | 164 +++++++++++
tools/perf/util/header.h | 2 +
tools/perf/util/hist.c | 59 +++-
tools/perf/util/parse-events.c | 1 +
tools/perf/util/parse-events.h | 1 +
tools/perf/util/parse-events.y | 10 +
tools/perf/util/symbol.h | 3 +-
28 files changed, 1059 insertions(+), 267 deletions(-)
create mode 100644
Documentation/ABI/testing/sysfs-bus-event_source-devices-events
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