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Commit 0ed1e0be authored by Ingo Molnar's avatar Ingo Molnar
Browse files

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:

  * Make per-cpu mmaps the default in 'perf record', from Adrian Hunter.

  * Default -t/--thread 'perf record' option to no inheritance,
    from Adrian Hunter.

  * Make 'perf top -g' refer to callchains, for consistency with other tools,
    from David Ahern.

  * Skip ignored symbols while printing callchain, from David Ahern.

  * Print callchains and symbols if they exist in 'perf script',
    from David Ahern.

  * Remove thread summary coloring in 'perf trace', from Pekka Enberg.

  * zsh completion support, from Ramkumar Ramachandra.

  * 'perf timechart' improvements, including backtrace support,
    from Stanislav Fomichev.

  * Fix using kcore files stored in the buildid cache when doing report/annotate
    in non-live sessions, from Adrian Hunter

  * Minor 'timechart' cleanups.

  * Fix tags/TAGS targets rebuilding, from Jiri Olsa.

  * Add options to show comm, fork, exit and mmap PERF_RECORD_ events in
    'perf script', from Namhyung Kim.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 65661f96 26286141

tools/lib/traceevent/event-parse.c

+6 −1
Original line number Diff line number Diff line
@@ -4099,6 +4099,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event 
	unsigned long long val;

	struct func_map *func;

	const char *saveptr;

	struct trace_seq p;

	char *bprint_fmt = NULL;

	char format[32];

	int show_func;
@@ -4306,8 +4307,12 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event 
				format[len] = 0;

				if (!len_as_arg)

					len_arg = -1;

				print_str_arg(s, data, size, event,

				/* Use helper trace_seq */

				trace_seq_init(&p);

				print_str_arg(&p, data, size, event,

					      format, len_arg, arg);

				trace_seq_terminate(&p);

				trace_seq_puts(s, p.buffer);

				arg = arg->next;

				break;

			default:

tools/perf/Documentation/perf-record.txt

+7 −5
Original line number Diff line number Diff line
@@ -57,6 +57,8 @@ OPTIONS 
-t::

--tid=::

        Record events on existing thread ID (comma separated list).

        This option also disables inheritance by default.  Enable it by adding

        --inherit.



-u::

--uid=::
@@ -201,11 +203,11 @@ abort events and some memory events in precise mode on modern Intel CPUs. 
--transaction::

Record transaction flags for transaction related events.



--force-per-cpu::

Force the use of per-cpu mmaps.  By default, when tasks are specified (i.e. -p,

-t or -u options) per-thread mmaps are created.  This option overrides that and

forces per-cpu mmaps.  A side-effect of that is that inheritance is

automatically enabled.  Add the -i option also to disable inheritance.

--per-thread::

Use per-thread mmaps.  By default per-cpu mmaps are created.  This option

overrides that and uses per-thread mmaps.  A side-effect of that is that

inheritance is automatically disabled.  --per-thread is ignored with a warning

if combined with -a or -C options.



SEE ALSO

--------

tools/perf/Documentation/perf-script.txt

+6 −0
Original line number Diff line number Diff line
@@ -203,6 +203,12 @@ OPTIONS 
--show-kernel-path::

	Try to resolve the path of [kernel.kallsyms]



--show-task-events

	Display task related events (e.g. FORK, COMM, EXIT).



--show-mmap-events

	Display mmap related events (e.g. MMAP, MMAP2).



SEE ALSO

--------

linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/Documentation/perf-timechart.txt

+22 −4
Original line number Diff line number Diff line
@@ -8,8 +8,7 @@ perf-timechart - Tool to visualize total system behavior during a workload 
SYNOPSIS

--------

[verse]

'perf timechart' record <command>

'perf timechart' [<options>]

'perf timechart' [<timechart options>] {record} [<record options>]



DESCRIPTION

-----------
@@ -21,8 +20,8 @@ There are two variants of perf timechart: 
  'perf timechart' to turn a trace into a Scalable Vector Graphics file,

  that can be viewed with popular SVG viewers such as 'Inkscape'.



OPTIONS

-------

TIMECHART OPTIONS

-----------------

-o::

--output=::

        Select the output file (default: output.svg)
@@ -35,6 +34,9 @@ OPTIONS 
-P::

--power-only::

        Only output the CPU power section of the diagram

-T::

--tasks-only::

        Don't output processor state transitions

-p::

--process::

        Select the processes to display, by name or PID
@@ -54,6 +56,22 @@ $ perf timechart 


  Written 10.2 seconds of trace to output.svg.



-n::

--proc-num::

        Print task info for at least given number of tasks.



RECORD OPTIONS

--------------

-P::

--power-only::

        Record only power-related events

-T::

--tasks-only::

        Record only tasks-related events

-g::

--callchain::

        Do call-graph (stack chain/backtrace) recording



SEE ALSO

--------

linkperf:perf-record[1]

tools/perf/Documentation/perf-top.txt

+2 −3
Original line number Diff line number Diff line
@@ -50,7 +50,6 @@ Default is to monitor all CPUS. 
--count-filter=<count>::

	Only display functions with more events than this.



-g::

--group::

        Put the counters into a counter group.
@@ -143,12 +142,12 @@ Default is to monitor all CPUS. 
--asm-raw::

	Show raw instruction encoding of assembly instructions.



-G::

-g::

	Enables call-graph (stack chain/backtrace) recording.



--call-graph::

	Setup and enable call-graph (stack chain/backtrace) recording,

	implies -G.

	implies -g.



--max-stack::

	Set the stack depth limit when parsing the callchain, anything