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-rw-r--r--tools/perf/Documentation/perf-lock.txt5
-rw-r--r--tools/perf/builtin-lock.c303
2 files changed, 241 insertions, 67 deletions
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt
index 6e5ba3cd2b72..d1efcbe7a470 100644
--- a/tools/perf/Documentation/perf-lock.txt
+++ b/tools/perf/Documentation/perf-lock.txt
@@ -200,6 +200,11 @@ CONTENTION OPTIONS
Note that it matches the substring so 'rq' would match both 'raw_spin_rq_lock'
and 'irq_enter_rcu'.
+-x::
+--field-separator=<SEP>::
+ Show results using a CSV-style output to make it easy to import directly
+ into spreadsheets. Columns are separated by the string specified in SEP.
+
SEE ALSO
--------
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 187efb651436..98b0c0b1b307 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -225,6 +225,12 @@ static void lock_stat_key_print_time(unsigned long long nsec, int len)
{ 0, NULL },
};
+ /* for CSV output */
+ if (len == 0) {
+ pr_info("%llu", nsec);
+ return;
+ }
+
for (int i = 0; table[i].unit; i++) {
if (nsec < table[i].base)
continue;
@@ -1626,11 +1632,179 @@ static void sort_contention_result(void)
sort_result();
}
-static void print_bpf_events(int total, struct lock_contention_fails *fails)
+static void print_header_stdio(void)
+{
+ struct lock_key *key;
+
+ list_for_each_entry(key, &lock_keys, list)
+ pr_info("%*s ", key->len, key->header);
+
+ switch (aggr_mode) {
+ case LOCK_AGGR_TASK:
+ pr_info(" %10s %s\n\n", "pid",
+ show_lock_owner ? "owner" : "comm");
+ break;
+ case LOCK_AGGR_CALLER:
+ pr_info(" %10s %s\n\n", "type", "caller");
+ break;
+ case LOCK_AGGR_ADDR:
+ pr_info(" %16s %s\n\n", "address", "symbol");
+ break;
+ default:
+ break;
+ }
+}
+
+static void print_header_csv(const char *sep)
+{
+ struct lock_key *key;
+
+ pr_info("# output: ");
+ list_for_each_entry(key, &lock_keys, list)
+ pr_info("%s%s ", key->header, sep);
+
+ switch (aggr_mode) {
+ case LOCK_AGGR_TASK:
+ pr_info("%s%s %s\n", "pid", sep,
+ show_lock_owner ? "owner" : "comm");
+ break;
+ case LOCK_AGGR_CALLER:
+ pr_info("%s%s %s", "type", sep, "caller");
+ if (verbose > 0)
+ pr_info("%s %s", sep, "stacktrace");
+ pr_info("\n");
+ break;
+ case LOCK_AGGR_ADDR:
+ pr_info("%s%s %s%s %s\n", "address", sep, "symbol", sep, "type");
+ break;
+ default:
+ break;
+ }
+}
+
+static void print_header(void)
+{
+ if (!quiet) {
+ if (symbol_conf.field_sep)
+ print_header_csv(symbol_conf.field_sep);
+ else
+ print_header_stdio();
+ }
+}
+
+static void print_lock_stat_stdio(struct lock_contention *con, struct lock_stat *st)
+{
+ struct lock_key *key;
+ struct thread *t;
+ int pid;
+
+ list_for_each_entry(key, &lock_keys, list) {
+ key->print(key, st);
+ pr_info(" ");
+ }
+
+ switch (aggr_mode) {
+ case LOCK_AGGR_CALLER:
+ pr_info(" %10s %s\n", get_type_str(st->flags), st->name);
+ break;
+ case LOCK_AGGR_TASK:
+ pid = st->addr;
+ t = perf_session__findnew(session, pid);
+ pr_info(" %10d %s\n",
+ pid, pid == -1 ? "Unknown" : thread__comm_str(t));
+ break;
+ case LOCK_AGGR_ADDR:
+ pr_info(" %016llx %s (%s)\n", (unsigned long long)st->addr,
+ st->name, get_type_name(st->flags));
+ break;
+ default:
+ break;
+ }
+
+ if (aggr_mode == LOCK_AGGR_CALLER && verbose > 0) {
+ struct map *kmap;
+ struct symbol *sym;
+ char buf[128];
+ u64 ip;
+
+ for (int i = 0; i < max_stack_depth; i++) {
+ if (!st->callstack || !st->callstack[i])
+ break;
+
+ ip = st->callstack[i];
+ sym = machine__find_kernel_symbol(con->machine, ip, &kmap);
+ get_symbol_name_offset(kmap, sym, ip, buf, sizeof(buf));
+ pr_info("\t\t\t%#lx %s\n", (unsigned long)ip, buf);
+ }
+ }
+}
+
+static void print_lock_stat_csv(struct lock_contention *con, struct lock_stat *st,
+ const char *sep)
+{
+ struct lock_key *key;
+ struct thread *t;
+ int pid;
+
+ list_for_each_entry(key, &lock_keys, list) {
+ key->print(key, st);
+ pr_info("%s ", sep);
+ }
+
+ switch (aggr_mode) {
+ case LOCK_AGGR_CALLER:
+ pr_info("%s%s %s", get_type_str(st->flags), sep, st->name);
+ if (verbose <= 0)
+ pr_info("\n");
+ break;
+ case LOCK_AGGR_TASK:
+ pid = st->addr;
+ t = perf_session__findnew(session, pid);
+ pr_info("%d%s %s\n", pid, sep, pid == -1 ? "Unknown" : thread__comm_str(t));
+ break;
+ case LOCK_AGGR_ADDR:
+ pr_info("%llx%s %s%s %s\n", (unsigned long long)st->addr, sep,
+ st->name, sep, get_type_name(st->flags));
+ break;
+ default:
+ break;
+ }
+
+ if (aggr_mode == LOCK_AGGR_CALLER && verbose > 0) {
+ struct map *kmap;
+ struct symbol *sym;
+ char buf[128];
+ u64 ip;
+
+ for (int i = 0; i < max_stack_depth; i++) {
+ if (!st->callstack || !st->callstack[i])
+ break;
+
+ ip = st->callstack[i];
+ sym = machine__find_kernel_symbol(con->machine, ip, &kmap);
+ get_symbol_name_offset(kmap, sym, ip, buf, sizeof(buf));
+ pr_info("%s %#lx %s", i ? ":" : sep, (unsigned long) ip, buf);
+ }
+ pr_info("\n");
+ }
+}
+
+static void print_lock_stat(struct lock_contention *con, struct lock_stat *st)
+{
+ if (symbol_conf.field_sep)
+ print_lock_stat_csv(con, st, symbol_conf.field_sep);
+ else
+ print_lock_stat_stdio(con, st);
+}
+
+static void print_footer_stdio(int total, int bad, struct lock_contention_fails *fails)
{
/* Output for debug, this have to be removed */
int broken = fails->task + fails->stack + fails->time + fails->data;
+ if (!use_bpf)
+ print_bad_events(bad, total);
+
if (quiet || total == 0 || (broken == 0 && verbose <= 0))
return;
@@ -1646,38 +1820,53 @@ static void print_bpf_events(int total, struct lock_contention_fails *fails)
pr_info(" %10s: %d\n", "data", fails->data);
}
+static void print_footer_csv(int total, int bad, struct lock_contention_fails *fails,
+ const char *sep)
+{
+ /* Output for debug, this have to be removed */
+ if (use_bpf)
+ bad = fails->task + fails->stack + fails->time + fails->data;
+
+ if (quiet || total == 0 || (bad == 0 && verbose <= 0))
+ return;
+
+ total += bad;
+ pr_info("# debug: total=%d%s bad=%d", total, sep, bad);
+
+ if (use_bpf) {
+ pr_info("%s bad_%s=%d", sep, "task", fails->task);
+ pr_info("%s bad_%s=%d", sep, "stack", fails->stack);
+ pr_info("%s bad_%s=%d", sep, "time", fails->time);
+ pr_info("%s bad_%s=%d", sep, "data", fails->data);
+ } else {
+ int i;
+ const char *name[4] = { "acquire", "acquired", "contended", "release" };
+
+ for (i = 0; i < BROKEN_MAX; i++)
+ pr_info("%s bad_%s=%d", sep, name[i], bad_hist[i]);
+ }
+ pr_info("\n");
+}
+
+static void print_footer(int total, int bad, struct lock_contention_fails *fails)
+{
+ if (symbol_conf.field_sep)
+ print_footer_csv(total, bad, fails, symbol_conf.field_sep);
+ else
+ print_footer_stdio(total, bad, fails);
+}
+
static void print_contention_result(struct lock_contention *con)
{
struct lock_stat *st;
- struct lock_key *key;
int bad, total, printed;
- if (!quiet) {
- list_for_each_entry(key, &lock_keys, list)
- pr_info("%*s ", key->len, key->header);
-
- switch (aggr_mode) {
- case LOCK_AGGR_TASK:
- pr_info(" %10s %s\n\n", "pid",
- show_lock_owner ? "owner" : "comm");
- break;
- case LOCK_AGGR_CALLER:
- pr_info(" %10s %s\n\n", "type", "caller");
- break;
- case LOCK_AGGR_ADDR:
- pr_info(" %16s %s\n\n", "address", "symbol");
- break;
- default:
- break;
- }
- }
+ if (!quiet)
+ print_header();
bad = total = printed = 0;
while ((st = pop_from_result())) {
- struct thread *t;
- int pid;
-
total += use_bpf ? st->nr_contended : 1;
if (st->broken)
bad++;
@@ -1685,45 +1874,7 @@ static void print_contention_result(struct lock_contention *con)
if (!st->wait_time_total)
continue;
- list_for_each_entry(key, &lock_keys, list) {
- key->print(key, st);
- pr_info(" ");
- }
-
- switch (aggr_mode) {
- case LOCK_AGGR_CALLER:
- pr_info(" %10s %s\n", get_type_str(st->flags), st->name);
- break;
- case LOCK_AGGR_TASK:
- pid = st->addr;
- t = perf_session__findnew(session, pid);
- pr_info(" %10d %s\n",
- pid, pid == -1 ? "Unknown" : thread__comm_str(t));
- break;
- case LOCK_AGGR_ADDR:
- pr_info(" %016llx %s (%s)\n", (unsigned long long)st->addr,
- st->name, get_type_name(st->flags));
- break;
- default:
- break;
- }
-
- if (aggr_mode == LOCK_AGGR_CALLER && verbose > 0) {
- struct map *kmap;
- struct symbol *sym;
- char buf[128];
- u64 ip;
-
- for (int i = 0; i < max_stack_depth; i++) {
- if (!st->callstack || !st->callstack[i])
- break;
-
- ip = st->callstack[i];
- sym = machine__find_kernel_symbol(con->machine, ip, &kmap);
- get_symbol_name_offset(kmap, sym, ip, buf, sizeof(buf));
- pr_info("\t\t\t%#lx %s\n", (unsigned long)ip, buf);
- }
- }
+ print_lock_stat(con, st);
if (++printed >= print_nr_entries)
break;
@@ -1740,10 +1891,7 @@ static void print_contention_result(struct lock_contention *con)
/* some entries are collected but hidden by the callstack filter */
total += con->nr_filtered;
- if (use_bpf)
- print_bpf_events(total, &con->fails);
- else
- print_bad_events(bad, total);
+ print_footer(total, bad, &con->fails);
}
static bool force;
@@ -1847,6 +1995,16 @@ static int check_lock_contention_options(const struct option *options,
return -1;
}
+ if (symbol_conf.field_sep) {
+ if (strstr(symbol_conf.field_sep, ":") || /* part of type flags */
+ strstr(symbol_conf.field_sep, "+") || /* part of caller offset */
+ strstr(symbol_conf.field_sep, ".")) { /* can be in a symbol name */
+ pr_err("Cannot use the separator that is already used\n");
+ parse_options_usage(usage, options, "x", 1);
+ return -1;
+ }
+ }
+
if (show_lock_owner)
show_thread_stats = true;
@@ -1962,6 +2120,15 @@ static int __cmd_contention(int argc, const char **argv)
if (select_key(true))
goto out_delete;
+ if (symbol_conf.field_sep) {
+ int i;
+ struct lock_key *keys = contention_keys;
+
+ /* do not align output in CSV format */
+ for (i = 0; keys[i].name; i++)
+ keys[i].len = 0;
+ }
+
if (use_bpf) {
lock_contention_start();
if (argc)
@@ -2330,6 +2497,8 @@ int cmd_lock(int argc, const char **argv)
OPT_CALLBACK('S', "callstack-filter", NULL, "NAMES",
"Filter specific function in the callstack", parse_call_stack),
OPT_BOOLEAN('o', "lock-owner", &show_lock_owner, "show lock owners instead of waiters"),
+ OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep, "separator",
+ "print result in CSV format with custom separator"),
OPT_PARENT(lock_options)
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 23:10:05 +0000