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Date: Fri, 2 Oct 2015 17:25:35 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ingo Molnar <mingo@...nel.org>
Cc: linux-kernel@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Andi Kleen <ak@...ux.intel.com>, Borislav Petkov <bp@...e.de>,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Kan Liang <kan.liang@...el.com>,
linaro-kernel@...ts.linaro.org,
Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
Namhyung Kim <namhyung@...nel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Stephane Eranian <eranian@...gle.com>,
Wang Nan <wangnan0@...wei.com>, Yang Shi <yang.shi@...aro.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [GIT PULL 00/10] perf/cover improvements and fixes
Hi Ingo,
Please consider pulling,
- Arnaldo
The following changes since commit c2365b9388e8ec19305e3f449c1826e7493d156d:
perf/x86/intel/uncore: Do not use macro DEFINE_PCI_DEVICE_TABLE() (2015-10-01 10:53:03 +0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
for you to fetch changes up to 19afd10410957b1c808c2c49a88e6dd8b23aa894:
perf stat: Reduce min --interval-print to 10ms (2015-10-02 17:07:55 -0300)
----------------------------------------------------------------
perf/core improvements and fixes:
User visible:
- Do event name substring search as last resort in 'perf list'.
(Arnaldo Carvalho de Melo)
E.g.:
# perf list clock
List of pre-defined events (to be used in -e):
cpu-clock [Software event]
task-clock [Software event]
uncore_cbox_0/clockticks/ [Kernel PMU event]
uncore_cbox_1/clockticks/ [Kernel PMU event]
kvm:kvm_pvclock_update [Tracepoint event]
kvm:kvm_update_master_clock [Tracepoint event]
power:clock_disable [Tracepoint event]
power:clock_enable [Tracepoint event]
power:clock_set_rate [Tracepoint event]
syscalls:sys_enter_clock_adjtime [Tracepoint event]
syscalls:sys_enter_clock_getres [Tracepoint event]
syscalls:sys_enter_clock_gettime [Tracepoint event]
syscalls:sys_enter_clock_nanosleep [Tracepoint event]
syscalls:sys_enter_clock_settime [Tracepoint event]
syscalls:sys_exit_clock_adjtime [Tracepoint event]
syscalls:sys_exit_clock_getres [Tracepoint event]
syscalls:sys_exit_clock_gettime [Tracepoint event]
syscalls:sys_exit_clock_nanosleep [Tracepoint event]
syscalls:sys_exit_clock_settime [Tracepoint event]
- Reduce min 'perf stat --interval-print/-I' to 10ms (Kan Liang)
perf stat --interval in action:
# perf stat -e cycles -I 50 -a usleep $((200 * 1000))
print interval < 100ms. The overhead percentage could be high in some cases. Please proceed with caution.
# time counts unit events
0.050233636 48,240,396 cycles
0.100557098 35,492,594 cycles
0.150804687 39,295,112 cycles
0.201032269 33,101,961 cycles
0.201980732 786,379 cycles
#
- Allow for max_stack greater than PERF_MAX_STACK_DEPTH, as when
synthesizing callchains from Intel PT data (Adrian Hunter)
- Allow probing on kmodules without DWARF (Masami Hiramatsu)
- Fix a segfault when processing a perf.data file with callchains using
"perf report --call-graph none" (Namhyung Kim)
- Fix unresolved COMMs in 'perf top' when -s comm is used (Namhyung Kim)
- Register idle thread in 'perf top' (Namhyung Kim)
- Change 'record.samples' type to unsigned long long, fixing output of
number of samples in 32-bit architectures (Yang Shi)
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
----------------------------------------------------------------
Adrian Hunter (1):
perf callchain: Allow for max_stack greater than PERF_MAX_STACK_DEPTH
Arnaldo Carvalho de Melo (2):
perf list: Do event name substring search as last resort when no events found
perf list: Honour 'event_glob' whem printing selectable PMUs
Kan Liang (1):
perf stat: Reduce min --interval-print to 10ms
Masami Hiramatsu (1):
perf probe: Allow probing on kmodules without dwarf
Namhyung Kim (4):
perf record: Allocate area for sample_id_hdr in a synthesized comm event
perf top: Fix unresolved comm when -s comm is used
perf top: Register idle thread
perf report: Fix a bug on "--call-graph none" option
Yang Shi (1):
perf record: Change 'record.samples' type to unsigned long long
tools/perf/Documentation/perf-list.txt | 2 ++
tools/perf/Documentation/perf-stat.txt | 5 +++--
tools/perf/builtin-list.c | 18 ++++++++++++++++--
tools/perf/builtin-probe.c | 8 +++-----
tools/perf/builtin-record.c | 16 ++++++++++++----
tools/perf/builtin-stat.c | 13 +++++++++----
tools/perf/builtin-top.c | 10 ++++++++--
tools/perf/util/hist.c | 2 +-
tools/perf/util/machine.c | 2 +-
tools/perf/util/pmu.c | 3 ++-
tools/perf/util/probe-event.c | 8 +++++---
tools/perf/util/session.c | 2 +-
tools/perf/util/session.h | 2 ++
13 files changed, 65 insertions(+), 26 deletions(-)
--
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