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Date: Mon, 8 Feb 2021 21:08:45 +0100
From: Jiri Olsa <jolsa@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: lkml <linux-kernel@...r.kernel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Ingo Molnar <mingo@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Namhyung Kim <namhyung@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Michael Petlan <mpetlan@...hat.com>,
Ian Rogers <irogers@...gle.com>,
Alexei Budankov <abudankov@...wei.com>
Subject: [PATCH 01/24] perf daemon: Add daemon command
Adding daemon skeleton with minimal base (non) functionality,
covering various setup in start command.
Adding perf-daemon.txt with basic info.
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
tools/perf/Build | 1 +
tools/perf/Documentation/perf-daemon.txt | 40 +++++++++++
tools/perf/builtin-daemon.c | 86 ++++++++++++++++++++++++
tools/perf/builtin.h | 1 +
tools/perf/command-list.txt | 1 +
tools/perf/perf.c | 1 +
6 files changed, 130 insertions(+)
create mode 100644 tools/perf/Documentation/perf-daemon.txt
create mode 100644 tools/perf/builtin-daemon.c
diff --git a/tools/perf/Build b/tools/perf/Build
index 5f392dbb88fc..db61dbe2b543 100644
--- a/tools/perf/Build
+++ b/tools/perf/Build
@@ -24,6 +24,7 @@ perf-y += builtin-mem.o
perf-y += builtin-data.o
perf-y += builtin-version.o
perf-y += builtin-c2c.o
+perf-y += builtin-daemon.o
perf-$(CONFIG_TRACE) += builtin-trace.o
perf-$(CONFIG_LIBELF) += builtin-probe.o
diff --git a/tools/perf/Documentation/perf-daemon.txt b/tools/perf/Documentation/perf-daemon.txt
new file mode 100644
index 000000000000..d05b8dab0a6a
--- /dev/null
+++ b/tools/perf/Documentation/perf-daemon.txt
@@ -0,0 +1,40 @@
+perf-daemon(1)
+==============
+
+
+NAME
+----
+perf-daemon - Run record sessions on background
+
+
+SYNOPSIS
+--------
+[verse]
+'perf daemon'
+'perf daemon' [<options>]
+'perf daemon start' [<options>]
+
+
+DESCRIPTION
+-----------
+This command allows to run simple daemon process that starts and
+monitors configured record sessions.
+
+
+OPTIONS
+-------
+-v::
+--verbose::
+ Be more verbose.
+
+All generic options are available also under commands.
+
+
+START COMMAND
+-------------
+The start command creates the daemon process.
+
+
+SEE ALSO
+--------
+linkperf:perf-record[1], linkperf:perf-config[1]
diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c
new file mode 100644
index 000000000000..8b13e455ac40
--- /dev/null
+++ b/tools/perf/builtin-daemon.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <subcmd/parse-options.h>
+#include <linux/limits.h>
+#include <string.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+#include "builtin.h"
+#include "perf.h"
+#include "debug.h"
+#include "util.h"
+
+struct daemon {
+ char *base;
+ FILE *out;
+ char perf[PATH_MAX];
+};
+
+static struct daemon __daemon = { };
+
+static const char * const daemon_usage[] = {
+ "perf daemon start [<options>]",
+ "perf daemon [<options>]",
+ NULL
+};
+
+static bool done;
+
+static void sig_handler(int sig __maybe_unused)
+{
+ done = true;
+}
+
+static int __cmd_start(struct daemon *daemon, struct option parent_options[],
+ int argc, const char **argv)
+{
+ struct option start_options[] = {
+ OPT_PARENT(parent_options),
+ OPT_END()
+ };
+ int err = 0;
+
+ argc = parse_options(argc, argv, start_options, daemon_usage, 0);
+ if (argc)
+ usage_with_options(daemon_usage, start_options);
+
+ debug_set_file(daemon->out);
+ debug_set_display_time(true);
+
+ pr_info("daemon started (pid %d)\n", getpid());
+
+ signal(SIGINT, sig_handler);
+ signal(SIGTERM, sig_handler);
+
+ while (!done && !err) {
+ sleep(1);
+ }
+
+ pr_info("daemon exited\n");
+ fclose(daemon->out);
+ return err;
+}
+
+int cmd_daemon(int argc, const char **argv)
+{
+ struct option daemon_options[] = {
+ OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+ OPT_END()
+ };
+
+ perf_exe(__daemon.perf, sizeof(__daemon.perf));
+ __daemon.out = stdout;
+
+ argc = parse_options(argc, argv, daemon_options, daemon_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (argc) {
+ if (!strcmp(argv[0], "start"))
+ return __cmd_start(&__daemon, daemon_options, argc, argv);
+
+ pr_err("failed: unknown command '%s'\n", argv[0]);
+ return -1;
+ }
+
+ return -1;
+}
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index 14a2db622a7b..7303e80a639c 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -37,6 +37,7 @@ int cmd_inject(int argc, const char **argv);
int cmd_mem(int argc, const char **argv);
int cmd_data(int argc, const char **argv);
int cmd_ftrace(int argc, const char **argv);
+int cmd_daemon(int argc, const char **argv);
int find_scripts(char **scripts_array, char **scripts_path_array, int num,
int pathlen);
diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt
index bc6c585f74fc..825a12e8d694 100644
--- a/tools/perf/command-list.txt
+++ b/tools/perf/command-list.txt
@@ -31,3 +31,4 @@ perf-timechart mainporcelain common
perf-top mainporcelain common
perf-trace mainporcelain audit
perf-version mainporcelain common
+perf-daemon mainporcelain common
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 27f94b0bb874..20cb91ef06ff 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -88,6 +88,7 @@ static struct cmd_struct commands[] = {
{ "mem", cmd_mem, 0 },
{ "data", cmd_data, 0 },
{ "ftrace", cmd_ftrace, 0 },
+ { "daemon", cmd_daemon, 0 },
};
struct pager_config {
--
2.29.2
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