Merge branch 'perf/core' of... (e25804a0) · Commits · e / devices / android_kernel_fairphone_FP3

tools/perf/Documentation/perf-record.txt

+4 −0

Original line number	Diff line number	Diff line
		@@ -83,6 +83,10 @@ OPTIONS
		--call-graph::
		Do call-graph (stack chain/backtrace) recording.

		-q::
		--quiet::
		Don't print any message, useful for scripting.

		-v::
		--verbose::
		Be more verbose (show counter open errors, etc).

+6 −2

Original line number	Diff line number	Diff line
		@@ -353,7 +353,7 @@ static void create_counter(int counter, int cpu)
		}

		if (read(fd[nr_cpu][counter][thread_index], &read_data, sizeof(read_data)) == -1) {
		perror("Unable to read perf file descriptor\n");
		perror("Unable to read perf file descriptor");
		exit(-1);
		}

		@@ -626,7 +626,7 @@ static int __cmd_record(int argc, const char **argv)

		nr_cpus = read_cpu_map(cpu_list);
		if (nr_cpus < 1) {
		perror("failed to collect number of CPUs\n");
		perror("failed to collect number of CPUs");
		return -1;
		}

		@@ -761,6 +761,9 @@ static int __cmd_record(int argc, const char **argv)
		}
		}

		if (quiet)
		return 0;

		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);

		/*
		@@ -820,6 +823,7 @@ static const struct option options[] = {
		"do call-graph (stack chain/backtrace) recording"),
		OPT_INCR('v', "verbose", &verbose,
		"be more verbose (show counter open errors, etc)"),
		OPT_BOOLEAN('q', "quiet", &quiet, "don't print any message"),
		OPT_BOOLEAN('s', "stat", &inherit_stat,
		"per thread counts"),
		OPT_BOOLEAN('d', "data", &sample_address,

+5 −4

Original line number	Diff line number	Diff line
		@@ -625,12 +625,13 @@ int cmd_trace(int argc, const char *argv, const char prefix __used)
		dup2(live_pipe[1], 1);
		close(live_pipe[0]);

		__argv = malloc(5 * sizeof(const char *));
		__argv = malloc(6 * sizeof(const char *));
		__argv[0] = "/bin/sh";
		__argv[1] = record_script_path;
		__argv[2] = "-o";
		__argv[3] = "-";
		__argv[4] = NULL;
		__argv[2] = "-q";
		__argv[3] = "-o";
		__argv[4] = "-";
		__argv[5] = NULL;

		execvp("/bin/sh", (char **)__argv);
		exit(-1);

+18 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,12 @@

		import errno, os

		FUTEX_WAIT = 0
		FUTEX_WAKE = 1
		FUTEX_PRIVATE_FLAG = 128
		FUTEX_CLOCK_REALTIME = 256
		FUTEX_CMD_MASK = ~(FUTEX_PRIVATE_FLAG \| FUTEX_CLOCK_REALTIME)

		NSECS_PER_SEC = 1000000000

		def avg(total, n):
		@@ -26,6 +32,18 @@ def nsecs_str(nsecs):
		str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
		return str

		def add_stats(dict, key, value):
		if not dict.has_key(key):
		dict[key] = (value, value, value, 1)
		else:
		min, max, avg, count = dict[key]
		if value < min:
		min = value
		if value > max:
		max = value
		avg = (avg + value) / 2
		dict[key] = (min, max, avg, count + 1)

		def clear_term():
		print("\x1b[H\x1b[2J")

0 → 100644

+2 −0

Original line number	Diff line number	Diff line
		#!/bin/bash
		perf record -a -e syscalls:sys_enter_futex -e syscalls:sys_exit_futex $@