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perf_counter tools: Clarify events/samples naming

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A number of places said 'events' while they should say 'samples'.

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-06-05 14:29:10 +02:00
parent 8edd4286f9
commit 2debbc8366
3 changed files with 35 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
Documentation/perf_counter/builtin-record.c
View File

@ -65,7 +65,7 @@ static unsigned int mmap_read_head(struct mmap_data *md)
return head; return head;
} }
static long events; static long samples;
static struct timeval last_read, this_read; static struct timeval last_read, this_read;
static __u64 bytes_written; static __u64 bytes_written;
@ -83,7 +83,7 @@ static void mmap_read(struct mmap_data *md)
/* /*
* If we're further behind than half the buffer, there's a chance * If we're further behind than half the buffer, there's a chance
* the writer will bite our tail and screw up the events under us. * the writer will bite our tail and mess up the samples under us.
* *
* If we somehow ended up ahead of the head, we got messed up. * If we somehow ended up ahead of the head, we got messed up.
* *
@ -109,7 +109,7 @@ static void mmap_read(struct mmap_data *md)
last_read = this_read; last_read = this_read;
if (old != head) if (old != head)
events++; samples++;
size = head - old; size = head - old;
@ -257,7 +257,7 @@ out_failure:
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
static void pid_synthesize_mmap_events(pid_t pid) static void pid_synthesize_mmap_samples(pid_t pid)
{ {
char filename[PATH_MAX]; char filename[PATH_MAX];
FILE *fp; FILE *fp;
@ -315,7 +315,7 @@ static void pid_synthesize_mmap_events(pid_t pid)
fclose(fp); fclose(fp);
} }
static void synthesize_events(void) static void synthesize_samples(void)
{ {
DIR *proc; DIR *proc;
struct dirent dirent, *next; struct dirent dirent, *next;
@ -331,7 +331,7 @@ static void synthesize_events(void)
continue; continue;
pid_synthesize_comm_event(pid, 1); pid_synthesize_comm_event(pid, 1);
pid_synthesize_mmap_events(pid); pid_synthesize_mmap_samples(pid);
} }
closedir(proc); closedir(proc);
@ -396,7 +396,7 @@ static void open_counters(int cpu, pid_t pid)
if (pid > 0) { if (pid > 0) {
pid_synthesize_comm_event(pid, 0); pid_synthesize_comm_event(pid, 0);
pid_synthesize_mmap_events(pid); pid_synthesize_mmap_samples(pid);
} }
group_fd = -1; group_fd = -1;
@ -469,17 +469,17 @@ static int __cmd_record(int argc, const char **argv)
} }
if (system_wide) if (system_wide)
synthesize_events(); synthesize_samples();
while (!done) { while (!done) {
int hits = events; int hits = samples;
for (i = 0; i < nr_cpu; i++) { for (i = 0; i < nr_cpu; i++) {
for (counter = 0; counter < nr_counters; counter++) for (counter = 0; counter < nr_counters; counter++)
mmap_read(&mmap_array[i][counter]); mmap_read(&mmap_array[i][counter]);
} }
if (hits == events) if (hits == samples)
ret = poll(event_array, nr_poll, 100); ret = poll(event_array, nr_poll, 100);
} }
@ -487,7 +487,7 @@ static int __cmd_record(int argc, const char **argv)
* Approximate RIP event size: 24 bytes. * Approximate RIP event size: 24 bytes.
*/ */
fprintf(stderr, fprintf(stderr,
"[ perf record: Captured and wrote %.3f MB %s (~%lld events) ]\n", "[ perf record: Captured and wrote %.3f MB %s (~%lld samples) ]\n",
(double)bytes_written / 1024.0 / 1024.0, (double)bytes_written / 1024.0 / 1024.0,
output_name, output_name,
bytes_written / 24); bytes_written / 24);

2
Documentation/perf_counter/builtin-report.c
View File

@ -857,7 +857,7 @@ static size_t output__fprintf(FILE *fp, uint64_t total_samples)
fprintf(fp, "\n"); fprintf(fp, "\n");
fprintf(fp, "#\n"); fprintf(fp, "#\n");
fprintf(fp, "# (%Ld profiler events)\n", (__u64)total_samples); fprintf(fp, "# (%Ld samples)\n", (__u64)total_samples);
fprintf(fp, "#\n"); fprintf(fp, "#\n");
fprintf(fp, "# Overhead"); fprintf(fp, "# Overhead");

46
Documentation/perf_counter/builtin-top.c
View File

@ -137,8 +137,8 @@ static double sym_weight(const struct sym_entry *sym)
return weight; return weight;
} }
static long events; static long samples;
static long userspace_events; static long userspace_samples;
static const char CONSOLE_CLEAR[] = ""; static const char CONSOLE_CLEAR[] = "";
static void __list_insert_active_sym(struct sym_entry *syme) static void __list_insert_active_sym(struct sym_entry *syme)
@ -177,14 +177,14 @@ static void print_sym_table(void)
{ {
int printed = 0, j; int printed = 0, j;
int counter; int counter;
float events_per_sec = events/delay_secs; float samples_per_sec = samples/delay_secs;
float kevents_per_sec = (events-userspace_events)/delay_secs; float ksamples_per_sec = (samples-userspace_samples)/delay_secs;
float sum_kevents = 0.0; float sum_ksamples = 0.0;
struct sym_entry *syme, *n; struct sym_entry *syme, *n;
struct rb_root tmp = RB_ROOT; struct rb_root tmp = RB_ROOT;
struct rb_node *nd; struct rb_node *nd;
events = userspace_events = 0; samples = userspace_samples = 0;
/* Sort the active symbols */ /* Sort the active symbols */
pthread_mutex_lock(&active_symbols_lock); pthread_mutex_lock(&active_symbols_lock);
@ -196,7 +196,7 @@ static void print_sym_table(void)
if (syme->snap_count != 0) { if (syme->snap_count != 0) {
syme->weight = sym_weight(syme); syme->weight = sym_weight(syme);
rb_insert_active_sym(&tmp, syme); rb_insert_active_sym(&tmp, syme);
sum_kevents += syme->snap_count; sum_ksamples += syme->snap_count;
for (j = 0; j < nr_counters; j++) for (j = 0; j < nr_counters; j++)
syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8; syme->count[j] = zero ? 0 : syme->count[j] * 7 / 8;
@ -209,8 +209,8 @@ static void print_sym_table(void)
printf( printf(
"------------------------------------------------------------------------------\n"); "------------------------------------------------------------------------------\n");
printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [", printf( " PerfTop:%8.0f irqs/sec kernel:%4.1f%% [",
events_per_sec, samples_per_sec,
100.0 - (100.0*((events_per_sec-kevents_per_sec)/events_per_sec))); 100.0 - (100.0*((samples_per_sec-ksamples_per_sec)/samples_per_sec)));
if (nr_counters == 1) { if (nr_counters == 1) {
printf("%d", event_count[0]); printf("%d", event_count[0]);
@ -246,12 +246,12 @@ static void print_sym_table(void)
printf("------------------------------------------------------------------------------\n\n"); printf("------------------------------------------------------------------------------\n\n");
if (nr_counters == 1) if (nr_counters == 1)
printf(" events pcnt"); printf(" samples pcnt");
else else
printf(" weight events pcnt"); printf(" weight samples pcnt");
printf(" RIP kernel function\n" printf(" RIP kernel function\n"
" ______ ______ _____ ________________ _______________\n\n" " ______ _______ _____ ________________ _______________\n\n"
); );
for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) { for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
@ -263,8 +263,8 @@ static void print_sym_table(void)
if (++printed > print_entries || syme->snap_count < count_filter) if (++printed > print_entries || syme->snap_count < count_filter)
continue; continue;
pcnt = 100.0 - (100.0 * ((sum_kevents - syme->snap_count) / pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
sum_kevents)); sum_ksamples));
/* /*
* We color high-overhead entries in red, low-overhead * We color high-overhead entries in red, low-overhead
@ -276,9 +276,9 @@ static void print_sym_table(void)
color = PERF_COLOR_GREEN; color = PERF_COLOR_GREEN;
if (nr_counters == 1) if (nr_counters == 1)
printf("%19.2f - ", syme->weight); printf("%20.2f - ", syme->weight);
else else
printf("%8.1f %10ld - ", syme->weight, syme->snap_count); printf("%9.1f %10ld - ", syme->weight, syme->snap_count);
color_fprintf(stdout, color, "%4.1f%%", pcnt); color_fprintf(stdout, color, "%4.1f%%", pcnt);
printf(" - %016llx : %s\n", sym->start, sym->name); printf(" - %016llx : %s\n", sym->start, sym->name);
@ -318,7 +318,7 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
return 1; return 1;
syme = dso__sym_priv(self, sym); syme = dso__sym_priv(self, sym);
/* Tag events to be skipped. */ /* Tag samples to be skipped. */
if (!strcmp("default_idle", name) || if (!strcmp("default_idle", name) ||
!strcmp("cpu_idle", name) || !strcmp("cpu_idle", name) ||
!strcmp("enter_idle", name) || !strcmp("enter_idle", name) ||
@ -405,15 +405,15 @@ static void record_ip(uint64_t ip, int counter)
} }
} }
events--; samples--;
} }
static void process_event(uint64_t ip, int counter) static void process_event(uint64_t ip, int counter)
{ {
events++; samples++;
if (ip < min_ip || ip > max_ip) { if (ip < min_ip || ip > max_ip) {
userspace_events++; userspace_samples++;
return; return;
} }
@ -451,7 +451,7 @@ static void mmap_read(struct mmap_data *md)
/* /*
* If we're further behind than half the buffer, there's a chance * If we're further behind than half the buffer, there's a chance
* the writer will bite our tail and screw up the events under us. * the writer will bite our tail and mess up the samples under us.
* *
* If we somehow ended up ahead of the head, we got messed up. * If we somehow ended up ahead of the head, we got messed up.
* *
@ -608,14 +608,14 @@ static int __cmd_top(void)
} }
while (1) { while (1) {
int hits = events; int hits = samples;
for (i = 0; i < nr_cpus; i++) { for (i = 0; i < nr_cpus; i++) {
for (counter = 0; counter < nr_counters; counter++) for (counter = 0; counter < nr_counters; counter++)
mmap_read(&mmap_array[i][counter]); mmap_read(&mmap_array[i][counter]);
} }
if (hits == events) if (hits == samples)
ret = poll(event_array, nr_poll, 100); ret = poll(event_array, nr_poll, 100);
} }