diff options
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Build | 1 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-kwork.txt | 43 | ||||
| -rw-r--r-- | tools/perf/builtin-kwork.c | 162 | ||||
| -rw-r--r-- | tools/perf/builtin.h | 1 | ||||
| -rw-r--r-- | tools/perf/command-list.txt | 1 | ||||
| -rw-r--r-- | tools/perf/perf.c | 1 | ||||
| -rw-r--r-- | tools/perf/util/kwork.h | 41 |
7 files changed, 250 insertions, 0 deletions
diff --git a/tools/perf/Build b/tools/perf/Build index db61dbe2b543..496b096153bb 100644 --- a/tools/perf/Build +++ b/tools/perf/Build @@ -25,6 +25,7 @@ perf-y += builtin-data.o perf-y += builtin-version.o perf-y += builtin-c2c.o perf-y += builtin-daemon.o +perf-y += builtin-kwork.o perf-$(CONFIG_TRACE) += builtin-trace.o perf-$(CONFIG_LIBELF) += builtin-probe.o diff --git a/tools/perf/Documentation/perf-kwork.txt b/tools/perf/Documentation/perf-kwork.txt new file mode 100644 index 000000000000..dc1e36da57bb --- /dev/null +++ b/tools/perf/Documentation/perf-kwork.txt @@ -0,0 +1,43 @@ +perf-kowrk(1) +============= + +NAME +---- +perf-kwork - Tool to trace/measure kernel work properties (latencies) + +SYNOPSIS +-------- +[verse] +'perf kwork' {record} + +DESCRIPTION +----------- +There are several variants of 'perf kwork': + + 'perf kwork record <command>' to record the kernel work + of an arbitrary workload. + + Example usage: + perf kwork record -- sleep 1 + +OPTIONS +------- +-D:: +--dump-raw-trace=:: + Display verbose dump of the sched data. + +-f:: +--force:: + Don't complain, do it. + +-k:: +--kwork:: + List of kwork to profile + +-v:: +--verbose:: + Be more verbose. (show symbol address, etc) + +SEE ALSO +-------- +linkperf:perf-record[1] diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c new file mode 100644 index 000000000000..3e8d5fa47674 --- /dev/null +++ b/tools/perf/builtin-kwork.c @@ -0,0 +1,162 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * builtin-kwork.c + * + * Copyright (c) 2022 Huawei Inc, Yang Jihong <yangjihong1@huawei.com> + */ + +#include "builtin.h" + +#include "util/data.h" +#include "util/kwork.h" +#include "util/debug.h" +#include "util/symbol.h" +#include "util/thread.h" +#include "util/string2.h" +#include "util/callchain.h" +#include "util/evsel_fprintf.h" + +#include <subcmd/pager.h> +#include <subcmd/parse-options.h> + +#include <errno.h> +#include <inttypes.h> +#include <linux/err.h> +#include <linux/time64.h> +#include <linux/zalloc.h> + +static struct kwork_class *kwork_class_supported_list[KWORK_CLASS_MAX] = { +}; + +static void setup_event_list(struct perf_kwork *kwork, + const struct option *options, + const char * const usage_msg[]) +{ + int i; + struct kwork_class *class; + char *tmp, *tok, *str; + + if (kwork->event_list_str == NULL) + goto null_event_list_str; + + str = strdup(kwork->event_list_str); + for (tok = strtok_r(str, ", ", &tmp); + tok; tok = strtok_r(NULL, ", ", &tmp)) { + for (i = 0; i < KWORK_CLASS_MAX; i++) { + class = kwork_class_supported_list[i]; + if (strcmp(tok, class->name) == 0) { + list_add_tail(&class->list, &kwork->class_list); + break; + } + } + if (i == KWORK_CLASS_MAX) { + usage_with_options_msg(usage_msg, options, + "Unknown --event key: `%s'", tok); + } + } + free(str); + +null_event_list_str: + /* + * config all kwork events if not specified + */ + if (list_empty(&kwork->class_list)) { + for (i = 0; i < KWORK_CLASS_MAX; i++) { + list_add_tail(&kwork_class_supported_list[i]->list, + &kwork->class_list); + } + } + + pr_debug("Config event list:"); + list_for_each_entry(class, &kwork->class_list, list) + pr_debug(" %s", class->name); + pr_debug("\n"); +} + +static int perf_kwork__record(struct perf_kwork *kwork, + int argc, const char **argv) +{ + const char **rec_argv; + unsigned int rec_argc, i, j; + struct kwork_class *class; + + const char *const record_args[] = { + "record", + "-a", + "-R", + "-m", "1024", + "-c", "1", + }; + + rec_argc = ARRAY_SIZE(record_args) + argc - 1; + + list_for_each_entry(class, &kwork->class_list, list) + rec_argc += 2 * class->nr_tracepoints; + + rec_argv = calloc(rec_argc + 1, sizeof(char *)); + if (rec_argv == NULL) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(record_args); i++) + rec_argv[i] = strdup(record_args[i]); + + list_for_each_entry(class, &kwork->class_list, list) { + for (j = 0; j < class->nr_tracepoints; j++) { + rec_argv[i++] = strdup("-e"); + rec_argv[i++] = strdup(class->tp_handlers[j].name); + } + } + + for (j = 1; j < (unsigned int)argc; j++, i++) + rec_argv[i] = argv[j]; + + BUG_ON(i != rec_argc); + + pr_debug("record comm: "); + for (j = 0; j < rec_argc; j++) + pr_debug("%s ", rec_argv[j]); + pr_debug("\n"); + + return cmd_record(i, rec_argv); +} + +int cmd_kwork(int argc, const char **argv) +{ + static struct perf_kwork kwork = { + .class_list = LIST_HEAD_INIT(kwork.class_list), + .force = false, + .event_list_str = NULL, + }; + const struct option kwork_options[] = { + OPT_INCR('v', "verbose", &verbose, + "be more verbose (show symbol address, etc)"), + OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace, + "dump raw trace in ASCII"), + OPT_STRING('k', "kwork", &kwork.event_list_str, "kwork", + "list of kwork to profile"), + OPT_BOOLEAN('f', "force", &kwork.force, "don't complain, do it"), + OPT_END() + }; + const char *kwork_usage[] = { + NULL, + NULL + }; + const char *const kwork_subcommands[] = { + "record", NULL + }; + + argc = parse_options_subcommand(argc, argv, kwork_options, + kwork_subcommands, kwork_usage, + PARSE_OPT_STOP_AT_NON_OPTION); + if (!argc) + usage_with_options(kwork_usage, kwork_options); + + setup_event_list(&kwork, kwork_options, kwork_usage); + + if (strlen(argv[0]) > 2 && strstarts("record", argv[0])) + return perf_kwork__record(&kwork, argc, argv); + else + usage_with_options(kwork_usage, kwork_options); + + return 0; +} diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h index 7303e80a639c..d03afea86217 100644 --- a/tools/perf/builtin.h +++ b/tools/perf/builtin.h @@ -38,6 +38,7 @@ 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 cmd_kwork(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 4aa034aefa33..8fcab5ad00c5 100644 --- a/tools/perf/command-list.txt +++ b/tools/perf/command-list.txt @@ -18,6 +18,7 @@ perf-iostat mainporcelain common perf-kallsyms mainporcelain common perf-kmem mainporcelain common perf-kvm mainporcelain common +perf-kwork mainporcelain common perf-list mainporcelain common perf-lock mainporcelain common perf-mem mainporcelain common diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 0170cb0819d6..c21b3973641a 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -91,6 +91,7 @@ static struct cmd_struct commands[] = { { "data", cmd_data, 0 }, { "ftrace", cmd_ftrace, 0 }, { "daemon", cmd_daemon, 0 }, + { "kwork", cmd_kwork, 0 }, }; struct pager_config { diff --git a/tools/perf/util/kwork.h b/tools/perf/util/kwork.h new file mode 100644 index 000000000000..6950636aab2a --- /dev/null +++ b/tools/perf/util/kwork.h @@ -0,0 +1,41 @@ +#ifndef PERF_UTIL_KWORK_H +#define PERF_UTIL_KWORK_H + +#include "perf.h" + +#include "util/tool.h" +#include "util/event.h" +#include "util/evlist.h" +#include "util/session.h" +#include "util/time-utils.h" + +#include <linux/list.h> +#include <linux/bitmap.h> + +enum kwork_class_type { + KWORK_CLASS_MAX, +}; + +struct kwork_class { + struct list_head list; + const char *name; + enum kwork_class_type type; + + unsigned int nr_tracepoints; + const struct evsel_str_handler *tp_handlers; +}; + +struct perf_kwork { + /* + * metadata + */ + struct list_head class_list; + + /* + * options for command + */ + bool force; + const char *event_list_str; +}; + +#endif /* PERF_UTIL_KWORK_H */ |