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Date: Sat, 3 Oct 2015 08:32:32 +0200 From: Ingo Molnar <mingo@...nel.org> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: linux-kernel@...r.kernel.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: Re: [GIT PULL 00/10] perf/cover improvements and fixes * Arnaldo Carvalho de Melo <acme@...nel.org> wrote: > 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(-) Pulled, thanks a lot Arnaldo! Btw., incidentally I noticed an UI detail: in the 'perf report' and 'perf top' TUI, PageUp does not move the cursor to the topmost line, it stays at whatever partial page position it is. I think it would be better to behave here like good editors do: PageUp in the first partial page moves to the first line (like 'Home') - and PageDown on the last page of output moves to the last line (like 'End'). Btw., even popular TUI editors get this wrong sometimes: - 'nano' (joe clone, popular mail editor) gets this right in both directions. - 'vim' behaves this way on PageDown, but not on PageUp. Nor does it recognize Home/End, only Ctrl-Home/End works. - 'emacs (e3 package) gets the PageUp/PageDown behavior right, but no Home/End key combo works (and exiting the editor is painful as well ;-) Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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