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-rw-r--r--tools/perf/builtin-trace.c418
1 files changed, 258 insertions, 160 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 0c5e4f72f2ba..abb914aa7be6 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -5,66 +5,73 @@
#include "util/symbol.h"
#include "util/thread.h"
#include "util/header.h"
+#include "util/exec_cmd.h"
+#include "util/trace-event.h"
-#include "util/parse-options.h"
+static char const *script_name;
+static char const *generate_script_lang;
-#include "perf.h"
-#include "util/debug.h"
+static int default_start_script(const char *script __attribute((unused)))
+{
+ return 0;
+}
-#include "util/trace-event.h"
+static int default_stop_script(void)
+{
+ return 0;
+}
-static char const *input_name = "perf.data";
-static int input;
-static unsigned long page_size;
-static unsigned long mmap_window = 32;
+static int default_generate_script(const char *outfile __attribute ((unused)))
+{
+ return 0;
+}
-static unsigned long total = 0;
-static unsigned long total_comm = 0;
+static struct scripting_ops default_scripting_ops = {
+ .start_script = default_start_script,
+ .stop_script = default_stop_script,
+ .process_event = print_event,
+ .generate_script = default_generate_script,
+};
+
+static struct scripting_ops *scripting_ops;
-static struct rb_root threads;
-static struct thread *last_match;
+static void setup_scripting(void)
+{
+ /* make sure PERF_EXEC_PATH is set for scripts */
+ perf_set_argv_exec_path(perf_exec_path());
-static struct perf_header *header;
-static u64 sample_type;
+ setup_perl_scripting();
+ scripting_ops = &default_scripting_ops;
+}
-static int
-process_comm_event(event_t *event, unsigned long offset, unsigned long head)
+static int cleanup_scripting(void)
{
- struct thread *thread;
+ return scripting_ops->stop_script();
+}
- thread = threads__findnew(event->comm.pid, &threads, &last_match);
+#include "util/parse-options.h"
- dump_printf("%p [%p]: PERF_RECORD_COMM: %s:%d\n",
- (void *)(offset + head),
- (void *)(long)(event->header.size),
- event->comm.comm, event->comm.pid);
+#include "perf.h"
+#include "util/debug.h"
- if (thread == NULL ||
- thread__set_comm(thread, event->comm.comm)) {
- dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
- return -1;
- }
- total_comm++;
+#include "util/trace-event.h"
+#include "util/data_map.h"
+#include "util/exec_cmd.h"
- return 0;
-}
+static char const *input_name = "perf.data";
-static int
-process_sample_event(event_t *event, unsigned long offset, unsigned long head)
+static struct perf_header *header;
+static u64 sample_type;
+
+static int process_sample_event(event_t *event)
{
- char level;
- int show = 0;
- struct dso *dso = NULL;
- struct thread *thread;
u64 ip = event->ip.ip;
u64 timestamp = -1;
u32 cpu = -1;
u64 period = 1;
void *more_data = event->ip.__more_data;
- int cpumode;
-
- thread = threads__findnew(event->ip.pid, &threads, &last_match);
+ struct thread *thread = threads__findnew(event->ip.pid);
if (sample_type & PERF_SAMPLE_TIME) {
timestamp = *(u64 *)more_data;
@@ -82,45 +89,19 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
more_data += sizeof(u64);
}
- dump_printf("%p [%p]: PERF_RECORD_SAMPLE (IP, %d): %d/%d: %p period: %Ld\n",
- (void *)(offset + head),
- (void *)(long)(event->header.size),
+ dump_printf("(IP, %d): %d/%d: %p period: %Ld\n",
event->header.misc,
event->ip.pid, event->ip.tid,
(void *)(long)ip,
(long long)period);
- dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
-
if (thread == NULL) {
- eprintf("problem processing %d event, skipping it.\n",
- event->header.type);
+ pr_debug("problem processing %d event, skipping it.\n",
+ event->header.type);
return -1;
}
- cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-
- if (cpumode == PERF_RECORD_MISC_KERNEL) {
- show = SHOW_KERNEL;
- level = 'k';
-
- dso = kernel_dso;
-
- dump_printf(" ...... dso: %s\n", dso->name);
-
- } else if (cpumode == PERF_RECORD_MISC_USER) {
-
- show = SHOW_USER;
- level = '.';
-
- } else {
- show = SHOW_HV;
- level = 'H';
-
- dso = hypervisor_dso;
-
- dump_printf(" ...... dso: [hypervisor]\n");
- }
+ dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
if (sample_type & PERF_SAMPLE_RAW) {
struct {
@@ -133,128 +114,189 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
* field, although it should be the same than this perf
* event pid
*/
- print_event(cpu, raw->data, raw->size, timestamp, thread->comm);
+ scripting_ops->process_event(cpu, raw->data, raw->size,
+ timestamp, thread->comm);
}
- total += period;
+ event__stats.total += period;
return 0;
}
-static int
-process_event(event_t *event, unsigned long offset, unsigned long head)
+static int sample_type_check(u64 type)
{
- trace_event(event);
-
- switch (event->header.type) {
- case PERF_RECORD_MMAP ... PERF_RECORD_LOST:
- return 0;
-
- case PERF_RECORD_COMM:
- return process_comm_event(event, offset, head);
-
- case PERF_RECORD_EXIT ... PERF_RECORD_READ:
- return 0;
-
- case PERF_RECORD_SAMPLE:
- return process_sample_event(event, offset, head);
+ sample_type = type;
- case PERF_RECORD_MAX:
- default:
+ if (!(sample_type & PERF_SAMPLE_RAW)) {
+ fprintf(stderr,
+ "No trace sample to read. Did you call perf record "
+ "without -R?");
return -1;
}
return 0;
}
+static struct perf_file_handler file_handler = {
+ .process_sample_event = process_sample_event,
+ .process_comm_event = event__process_comm,
+ .sample_type_check = sample_type_check,
+};
+
static int __cmd_trace(void)
{
- int ret, rc = EXIT_FAILURE;
- unsigned long offset = 0;
- unsigned long head = 0;
- struct stat perf_stat;
- event_t *event;
- uint32_t size;
- char *buf;
-
- trace_report();
- register_idle_thread(&threads, &last_match);
-
- input = open(input_name, O_RDONLY);
- if (input < 0) {
- perror("failed to open file");
- exit(-1);
- }
+ register_idle_thread();
+ register_perf_file_handler(&file_handler);
- ret = fstat(input, &perf_stat);
- if (ret < 0) {
- perror("failed to stat file");
- exit(-1);
- }
+ return mmap_dispatch_perf_file(&header, input_name,
+ 0, 0, &event__cwdlen, &event__cwd);
+}
- if (!perf_stat.st_size) {
- fprintf(stderr, "zero-sized file, nothing to do!\n");
- exit(0);
- }
- header = perf_header__read(input);
- head = header->data_offset;
- sample_type = perf_header__sample_type(header);
+struct script_spec {
+ struct list_head node;
+ struct scripting_ops *ops;
+ char spec[0];
+};
- if (!(sample_type & PERF_SAMPLE_RAW))
- die("No trace sample to read. Did you call perf record "
- "without -R?");
+LIST_HEAD(script_specs);
- if (load_kernel() < 0) {
- perror("failed to load kernel symbols");
- return EXIT_FAILURE;
- }
+static struct script_spec *script_spec__new(const char *spec,
+ struct scripting_ops *ops)
+{
+ struct script_spec *s = malloc(sizeof(*s) + strlen(spec) + 1);
-remap:
- buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
- MAP_SHARED, input, offset);
- if (buf == MAP_FAILED) {
- perror("failed to mmap file");
- exit(-1);
+ if (s != NULL) {
+ strcpy(s->spec, spec);
+ s->ops = ops;
}
-more:
- event = (event_t *)(buf + head);
+ return s;
+}
- if (head + event->header.size >= page_size * mmap_window) {
- unsigned long shift = page_size * (head / page_size);
- int res;
+static void script_spec__delete(struct script_spec *s)
+{
+ free(s->spec);
+ free(s);
+}
- res = munmap(buf, page_size * mmap_window);
- assert(res == 0);
+static void script_spec__add(struct script_spec *s)
+{
+ list_add_tail(&s->node, &script_specs);
+}
- offset += shift;
- head -= shift;
- goto remap;
- }
+static struct script_spec *script_spec__find(const char *spec)
+{
+ struct script_spec *s;
- size = event->header.size;
+ list_for_each_entry(s, &script_specs, node)
+ if (strcasecmp(s->spec, spec) == 0)
+ return s;
+ return NULL;
+}
- if (!size || process_event(event, offset, head) < 0) {
+static struct script_spec *script_spec__findnew(const char *spec,
+ struct scripting_ops *ops)
+{
+ struct script_spec *s = script_spec__find(spec);
- /*
- * assume we lost track of the stream, check alignment, and
- * increment a single u64 in the hope to catch on again 'soon'.
- */
+ if (s)
+ return s;
- if (unlikely(head & 7))
- head &= ~7ULL;
+ s = script_spec__new(spec, ops);
+ if (!s)
+ goto out_delete_spec;
- size = 8;
- }
+ script_spec__add(s);
+
+ return s;
- head += size;
+out_delete_spec:
+ script_spec__delete(s);
+
+ return NULL;
+}
- if (offset + head < (unsigned long)perf_stat.st_size)
- goto more;
+int script_spec_register(const char *spec, struct scripting_ops *ops)
+{
+ struct script_spec *s;
+
+ s = script_spec__find(spec);
+ if (s)
+ return -1;
- rc = EXIT_SUCCESS;
- close(input);
+ s = script_spec__findnew(spec, ops);
+ if (!s)
+ return -1;
+
+ return 0;
+}
+
+static struct scripting_ops *script_spec__lookup(const char *spec)
+{
+ struct script_spec *s = script_spec__find(spec);
+ if (!s)
+ return NULL;
- return rc;
+ return s->ops;
+}
+
+static void list_available_languages(void)
+{
+ struct script_spec *s;
+
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Scripting language extensions (used in "
+ "perf trace -s [spec:]script.[spec]):\n\n");
+
+ list_for_each_entry(s, &script_specs, node)
+ fprintf(stderr, " %-42s [%s]\n", s->spec, s->ops->name);
+
+ fprintf(stderr, "\n");
+}
+
+static int parse_scriptname(const struct option *opt __used,
+ const char *str, int unset __used)
+{
+ char spec[PATH_MAX];
+ const char *script, *ext;
+ int len;
+
+ if (strcmp(str, "list") == 0) {
+ list_available_languages();
+ return 0;
+ }
+
+ script = strchr(str, ':');
+ if (script) {
+ len = script - str;
+ if (len >= PATH_MAX) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+ strncpy(spec, str, len);
+ spec[len] = '\0';
+ scripting_ops = script_spec__lookup(spec);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+ script++;
+ } else {
+ script = str;
+ ext = strchr(script, '.');
+ if (!ext) {
+ fprintf(stderr, "invalid script extension");
+ return -1;
+ }
+ scripting_ops = script_spec__lookup(++ext);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid script extension");
+ return -1;
+ }
+ }
+
+ script_name = strdup(script);
+
+ return 0;
}
static const char * const annotate_usage[] = {
@@ -267,13 +309,24 @@ static const struct option options[] = {
"dump raw trace in ASCII"),
OPT_BOOLEAN('v', "verbose", &verbose,
"be more verbose (show symbol address, etc)"),
+ OPT_BOOLEAN('l', "latency", &latency_format,
+ "show latency attributes (irqs/preemption disabled, etc)"),
+ OPT_CALLBACK('s', "script", NULL, "name",
+ "script file name (lang:script name, script name, or *)",
+ parse_scriptname),
+ OPT_STRING('g', "gen-script", &generate_script_lang, "lang",
+ "generate perf-trace.xx script in specified language"),
+
OPT_END()
};
int cmd_trace(int argc, const char **argv, const char *prefix __used)
{
- symbol__init();
- page_size = getpagesize();
+ int err;
+
+ symbol__init(0);
+
+ setup_scripting();
argc = parse_options(argc, argv, options, annotate_usage, 0);
if (argc) {
@@ -287,5 +340,50 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
setup_pager();
- return __cmd_trace();
+ if (generate_script_lang) {
+ struct stat perf_stat;
+
+ int input = open(input_name, O_RDONLY);
+ if (input < 0) {
+ perror("failed to open file");
+ exit(-1);
+ }
+
+ err = fstat(input, &perf_stat);
+ if (err < 0) {
+ perror("failed to stat file");
+ exit(-1);
+ }
+
+ if (!perf_stat.st_size) {
+ fprintf(stderr, "zero-sized file, nothing to do!\n");
+ exit(0);
+ }
+
+ scripting_ops = script_spec__lookup(generate_script_lang);
+ if (!scripting_ops) {
+ fprintf(stderr, "invalid language specifier");
+ return -1;
+ }
+
+ header = perf_header__new();
+ if (header == NULL)
+ return -1;
+
+ perf_header__read(header, input);
+ err = scripting_ops->generate_script("perf-trace");
+ goto out;
+ }
+
+ if (script_name) {
+ err = scripting_ops->start_script(script_name);
+ if (err)
+ goto out;
+ }
+
+ err = __cmd_trace();
+
+ cleanup_scripting();
+out:
+ return err;
}