lkml.org 
[lkml]   [2021]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 01/24] perf daemon: Add daemon command
Date
Adding daemon skeleton with minimal base (non) functionality,
covering various setup in start command.

Adding empty perf-daemon.txt to skip compile warning. All the
features and man page are coming in following patches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/Build | 1 +
tools/perf/Documentation/perf-daemon.txt | 0
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, 90 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..e69de29bb2d1
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
\
 
 \ /
  Last update: 2021-01-31 00:52    [W:0.233 / U:2.556 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site