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 <[email protected]> --- 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
