Merge tag 'perf-core-for-mingo-20160310' 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:

  - Implement 'perf stat --metric-only' (Andi Kleen)

  - Fix perf script python database export crash (Chris Phlipot)

Infrastructure changes:

  - perf top/report --hierarchy assorted fixes for problems introduced in this
    perf/core cycle (Namhyung Kim)

  - Support '~' operation in libtraceevent (Steven Rosted)

Build fixes:

  - Fix bulding of jitdump on opensuse on ubuntu systems when the DWARF
    devel files are not installed (Arnaldo Carvalho de Melo)

  - Do not try building jitdump on unsupported arches (Jiri Olsa)

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

tools/lib/traceevent/event-parse.c

@@ -2398,6 +2398,12 @@ static int arg_num_eval(struct print_arg *arg, long long *val)
 				break;
 			*val = left + right;
 			break;
+		case '~':
+			ret = arg_num_eval(arg->op.right, &right);
+			if (!ret)
+				break;
+			*val = ~right;
+			break;
 		default:
 			do_warning("unknown op '%s'", arg->op.op);
 			ret = 0;

tools/perf/Documentation/perf-stat.txt

@@ -147,6 +147,10 @@ Print count deltas every N milliseconds (minimum: 10ms)
 The overhead percentage could be high in some cases, for instance with small, sub 100ms intervals.  Use with caution.
 	example: 'perf stat -I 1000 -e cycles -a sleep 5'
 
+--metric-only::
+Only print computed metrics. Print them in a single line.
+Don't show any raw values. Not supported with --per-thread.
+
 --per-socket::
 Aggregate counts per processor socket for system-wide mode measurements.  This
 is a useful mode to detect imbalance between sockets.  To enable this mode,
@@ -219,6 +223,29 @@ $ perf stat -- make -j
 
  Wall-clock time elapsed:   719.554352 msecs
 
+CSV FORMAT
+----------
+
+With -x, perf stat is able to output a not-quite-CSV format output
+Commas in the output are not put into "". To make it easy to parse
+it is recommended to use a different character like -x \;
+
+The fields are in this order:
+
+	- optional usec time stamp in fractions of second (with -I xxx)
+	- optional CPU, core, or socket identifier
+	- optional number of logical CPUs aggregated
+	- counter value
+	- unit of the counter value or empty
+	- event name
+	- run time of counter
+	- percentage of measurement time the counter was running
+	- optional variance if multiple values are collected with -r
+	- optional metric value
+	- optional unit of metric
+
+Additional metrics may be printed with all earlier fields being empty.
+
 SEE ALSO
 --------
 linkperf:perf-top[1], linkperf:perf-list[1]

tools/perf/arch/arm/Makefile

@@ -1,3 +1,4 @@
 ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 endif
+PERF_HAVE_JITDUMP := 1

tools/perf/arch/arm64/Makefile

@@ -1,3 +1,4 @@
 ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 endif
+PERF_HAVE_JITDUMP := 1

tools/perf/arch/powerpc/Makefile

@@ -3,3 +3,4 @@ PERF_HAVE_DWARF_REGS := 1
 endif
 
 HAVE_KVM_STAT_SUPPORT := 1
+PERF_HAVE_JITDUMP := 1

tools/perf/arch/x86/Makefile

@@ -3,3 +3,4 @@ PERF_HAVE_DWARF_REGS := 1
 endif
 HAVE_KVM_STAT_SUPPORT := 1
 PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET := 1
+PERF_HAVE_JITDUMP := 1

tools/perf/builtin-inject.c

@@ -73,7 +73,7 @@ static int perf_event__repipe_oe_synth(struct perf_tool *tool,
 	return perf_event__repipe_synth(tool, event);
 }
 
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef HAVE_JITDUMP
 static int perf_event__drop_oe(struct perf_tool *tool __maybe_unused,
 			       union perf_event *event __maybe_unused,
 			       struct ordered_events *oe __maybe_unused)
@@ -245,7 +245,7 @@ static int perf_event__repipe_mmap(struct perf_tool *tool,
 	return err;
 }
 
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef HAVE_JITDUMP
 static int perf_event__jit_repipe_mmap(struct perf_tool *tool,
 				       union perf_event *event,
 				       struct perf_sample *sample,
@@ -283,7 +283,7 @@ static int perf_event__repipe_mmap2(struct perf_tool *tool,
 	return err;
 }
 
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef HAVE_JITDUMP
 static int perf_event__jit_repipe_mmap2(struct perf_tool *tool,
 					union perf_event *event,
 					struct perf_sample *sample,
@@ -778,7 +778,9 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
 		OPT_BOOLEAN('s', "sched-stat", &inject.sched_stat,
 			    "Merge sched-stat and sched-switch for getting events "
 			    "where and how long tasks slept"),
+#ifdef HAVE_JITDUMP
 		OPT_BOOLEAN('j', "jit", &inject.jit_mode, "merge jitdump files into perf.data file"),
+#endif
 		OPT_INCR('v', "verbose", &verbose,
 			 "be more verbose (show build ids, etc)"),
 		OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name, "file",
@@ -795,7 +797,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
 		"perf inject [<options>]",
 		NULL
 	};
-#ifndef HAVE_LIBELF_SUPPORT
+#ifndef HAVE_JITDUMP
 	set_option_nobuild(options, 'j', "jit", "NO_LIBELF=1", true);
 #endif
 	argc = parse_options(argc, argv, options, inject_usage, 0);
@@ -833,7 +835,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
 		inject.tool.ordered_events = true;
 		inject.tool.ordering_requires_timestamps = true;
 	}
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef HAVE_JITDUMP
 	if (inject.jit_mode) {
 		inject.tool.mmap2	   = perf_event__jit_repipe_mmap2;
 		inject.tool.mmap	   = perf_event__jit_repipe_mmap;