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Commit 89b4be14 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/urgent

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

  * Synthesize anon MMAP records again, fix from Don Zickus.

  * Add an option in 'perf record' to force per-cpu mmaps, from Adrian Hunter.

  * Limit max callchain using max_stack on DWARF unwinding too.

  * Fix segfault in the UI browser caused by off by one handling END key.

  * Add '--demangle'/'--no-demangle' to perf probe, so that we can overcome
    current limitations in handling C++ symbols, from Azat Khuzhin .

  * Tweak 'perf trace' summary output, from Pekka Enberg.

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents e310718d 539e6bb7

tools/perf/Documentation/perf-record.txt

+6 −0
Original line number Diff line number Diff line
@@ -201,6 +201,12 @@ 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.



SEE ALSO

--------

linkperf:perf-stat[1], linkperf:perf-list[1]

tools/perf/builtin-probe.c

+2 −0
Original line number Diff line number Diff line
@@ -325,6 +325,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) 
		     opt_set_filter),

	OPT_CALLBACK('x', "exec", NULL, "executable|path",

			"target executable name or path", opt_set_target),

	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,

		    "Disable symbol demangling"),

	OPT_END()

	};

	int ret;

tools/perf/builtin-record.c

+2 −0
Original line number Diff line number Diff line
@@ -888,6 +888,8 @@ const struct option record_options[] = { 
		    "sample by weight (on special events only)"),

	OPT_BOOLEAN(0, "transaction", &record.opts.sample_transaction,

		    "sample transaction flags (special events only)"),

	OPT_BOOLEAN(0, "force-per-cpu", &record.opts.target.force_per_cpu,

		    "force the use of per-cpu mmaps"),

	OPT_END()

};

tools/perf/builtin-top.c

+2 −2
Original line number Diff line number Diff line
@@ -1172,7 +1172,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) 
	status = target__validate(target);

	if (status) {

		target__strerror(target, status, errbuf, BUFSIZ);

		ui__warning("%s", errbuf);

		ui__warning("%s\n", errbuf);

	}



	status = target__parse_uid(target);
@@ -1180,7 +1180,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused) 
		int saved_errno = errno;



		target__strerror(target, status, errbuf, BUFSIZ);

		ui__error("%s", errbuf);

		ui__error("%s\n", errbuf);



		status = -saved_errno;

		goto out_delete_evlist;

tools/perf/builtin-trace.c

+5 −5
Original line number Diff line number Diff line
@@ -2112,9 +2112,9 @@ static size_t thread__dump_stats(struct thread_trace *ttrace, 


	printed += fprintf(fp, "\n");



	printed += fprintf(fp, "                                                    msec/call\n");

	printed += fprintf(fp, "   syscall            calls      min       avg       max      stddev\n");

	printed += fprintf(fp, "   --------------- -------- -------- -------- -------- ------\n");

	printed += fprintf(fp, "                               (msec)    (msec)    (msec)        (%%)\n");

	printed += fprintf(fp, "   --------------- -------- --------- --------- ---------     ------\n");



	/* each int_node is a syscall */

	while (inode) {
@@ -2131,9 +2131,9 @@ static size_t thread__dump_stats(struct thread_trace *ttrace, 


			sc = &trace->syscalls.table[inode->i];

			printed += fprintf(fp, "   %-15s", sc->name);

			printed += fprintf(fp, " %8" PRIu64 " %8.3f %8.3f",

			printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f",

					   n, min, avg);

			printed += fprintf(fp, " %8.3f %6.2f\n", max, pct);

			printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct);

		}



		inode = intlist__next(inode);