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Commit 1c748dc2 authored Oct 06, 2015 by Ingo Molnar

Merge tag 'perf-core-for-mingo' of...

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

  - Switch the default callchain output mode to 'graph,0.5,caller', to make it
    look like the default for other tools, reducing the learning curve for
    people used to 'caller' based viewing. (Arnaldo Carvalho de Melo)

  - Implement column based horizontal scrolling in the hists browser (top, report),
    making it possible to use the TUI for things like 'perf mem report' where
    there are many more columns than can fit in a terminal. (Arnaldo Carvalho de Melo)

  - Support sorting by symbol_iaddr with perf.data files produced by
    'perf mem record'. (Don Zickus)

  - Display DATA_SRC sample type bit, i.e. when running 'perf evlist -v' the
    "DATA_SRC" wasn't appearing when set, fix it to look like: (Jiri Olsa)

      cpu/mem-loads/pp: ...SNIP... sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|DATA_SRC

  - Introduce the 'P' event modifier, meaning 'max precision level, please', i.e.:

     $ perf record -e cycles:P usleep 1

    Is now similar to:

     $ perf record usleep 1

    Useful, for instance, when specifying multiple events. (Jiri Olsa)

  - Make 'perf -v' and 'perf -h' work. (Jiri Olsa)

  - Fail properly when pattern matching fails to find a tracepoint, i.e.
    '-e non:existent' was being correctly handled, with a proper error message
    about that not being a valid event, but '-e non:existent*' wasn't,
    fix it. (Jiri Olsa)

Infrastructure changes:

  - Separate arch specific entries in 'perf test' and add an 'Intel CQM' one
    to be fun on x86 only. (Matt Fleming)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

parents e3b0ac1b 27bf90bf

tools/lib/api/fs/fs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -69,7 +69,7 @@ static const char * const tracefs__known_mountpoints[] = {
		struct fs {
		const char *name;
		const char * const *mounts;
		char path[PATH_MAX + 1];
		char path[PATH_MAX];
		bool found;
		long magic;
		};

tools/lib/api/fs/tracing_path.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -12,9 +12,9 @@
		#include "tracing_path.h"


		char tracing_mnt[PATH_MAX + 1] = "/sys/kernel/debug";
		char tracing_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing";
		char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";
		char tracing_mnt[PATH_MAX] = "/sys/kernel/debug";
		char tracing_path[PATH_MAX] = "/sys/kernel/debug/tracing";
		char tracing_events_path[PATH_MAX] = "/sys/kernel/debug/tracing/events";


		static void __tracing_path_set(const char tracing, const char mountpoint)

tools/perf/Documentation/perf-list.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ counted. The following modifiers exist:
		G - guest counting (in KVM guests)
		H - host counting (not in KVM guests)
		p - precise level
		P - use maximum detected precise level
		S - read sample value (PERF_SAMPLE_READ)
		D - pin the event to the PMU

tools/perf/Documentation/perf-report.txt

+1 −1

Original line number	Diff line number	Diff line
		@@ -192,7 +192,7 @@ OPTIONS
		when available. Usually more convenient to use --branch-history
		for this.

		Default: fractal,0.5,callee,function.
		Default: graph,0.5,caller

		--children::
		Accumulate callchain of children to parent entry so that then can

tools/perf/Documentation/perf.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,14 @@ OPTIONS
		Setup buildid cache directory. It has higher priority than
		buildid.dir config file option.

		-v::
		--version::
		Display perf version.

		-h::
		--help::
		Run perf help command.

		DESCRIPTION
		-----------
		Performance counters for Linux are a new kernel-based subsystem