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perf_counter tools: separate kerneltop into 'perf top' and 'perf stat'

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-04-20 15:37:32 +02:00
parent 6f06ccbc86
commit ddcacfa0fe
7 changed files with 601 additions and 1610 deletions
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1
Documentation/perf_counter/Makefile
View File

@ -309,6 +309,7 @@ LIB_OBJS += usage.o
LIB_OBJS += wrapper.o
BUILTIN_OBJS += builtin-help.o
BUILTIN_OBJS += builtin-stat.o
BUILTIN_OBJS += builtin-top.o
PERFLIBS = $(LIB_FILE)

592
Documentation/perf_counter/builtin-stat.c Normal file
View File

@ -0,0 +1,592 @@
/*
* kerneltop.c: show top kernel functions - performance counters showcase
Build with:
cc -O6 -Wall -c -o kerneltop.o kerneltop.c -lrt
Sample output:
------------------------------------------------------------------------------
KernelTop: 2669 irqs/sec [NMI, cache-misses/cache-refs], (all, cpu: 2)
------------------------------------------------------------------------------
weight RIP kernel function
______ ________________ _______________
35.20 - ffffffff804ce74b : skb_copy_and_csum_dev
33.00 - ffffffff804cb740 : sock_alloc_send_skb
31.26 - ffffffff804ce808 : skb_push
22.43 - ffffffff80510004 : tcp_established_options
19.00 - ffffffff8027d250 : find_get_page
15.76 - ffffffff804e4fc9 : eth_type_trans
15.20 - ffffffff804d8baa : dst_release
14.86 - ffffffff804cf5d8 : skb_release_head_state
14.00 - ffffffff802217d5 : read_hpet
12.00 - ffffffff804ffb7f : __ip_local_out
11.97 - ffffffff804fc0c8 : ip_local_deliver_finish
8.54 - ffffffff805001a3 : ip_queue_xmit
*/
/*
* perfstat: /usr/bin/time -alike performance counter statistics utility
It summarizes the counter events of all tasks (and child tasks),
covering all CPUs that the command (or workload) executes on.
It only counts the per-task events of the workload started,
independent of how many other tasks run on those CPUs.
Sample output:
$ ./perfstat -e 1 -e 3 -e 5 ls -lR /usr/include/ >/dev/null
Performance counter stats for 'ls':
163516953 instructions
2295 cache-misses
2855182 branch-misses
*/
/*
* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
*
* Improvements and fixes by:
*
* Arjan van de Ven <arjan@linux.intel.com>
* Yanmin Zhang <yanmin.zhang@intel.com>
* Wu Fengguang <fengguang.wu@intel.com>
* Mike Galbraith <efault@gmx.de>
* Paul Mackerras <paulus@samba.org>
*
* Released under the GPL v2. (and only v2, not any later version)
*/
#include "util.h"
#include <getopt.h>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <time.h>
#include <sched.h>
#include <pthread.h>
#include <sys/syscall.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <sys/prctl.h>
#include <sys/wait.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <linux/unistd.h>
#include <linux/types.h>
#include "../../include/linux/perf_counter.h"
/*
* prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
* counters in the current task.
*/
#define PR_TASK_PERF_COUNTERS_DISABLE 31
#define PR_TASK_PERF_COUNTERS_ENABLE 32
#define rdclock() \
({ \
struct timespec ts; \
\
clock_gettime(CLOCK_MONOTONIC, &ts); \
ts.tv_sec * 1000000000ULL + ts.tv_nsec; \
})
/*
* Pick up some kernel type conventions:
*/
#define __user
#define asmlinkage
#ifdef __x86_64__
#define __NR_perf_counter_open 295
#define rmb() asm volatile("lfence" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#endif
#ifdef __i386__
#define __NR_perf_counter_open 333
#define rmb() asm volatile("lfence" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#endif
#ifdef __powerpc__
#define __NR_perf_counter_open 319
#define rmb() asm volatile ("sync" ::: "memory")
#define cpu_relax() asm volatile ("" ::: "memory");
#endif
#define unlikely(x) __builtin_expect(!!(x), 0)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
extern asmlinkage int sys_perf_counter_open(
struct perf_counter_hw_event *hw_event_uptr __user,
pid_t pid,
int cpu,
int group_fd,
unsigned long flags);
#define MAX_COUNTERS 64
#define MAX_NR_CPUS 256
#define EID(type, id) (((__u64)(type) << PERF_COUNTER_TYPE_SHIFT) | (id))
static int system_wide = 0;
static int nr_counters = 0;
static __u64 event_id[MAX_COUNTERS] = {
EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK),
EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES),
EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS),
EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS),
EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES),
EID(PERF_TYPE_HARDWARE, PERF_COUNT_INSTRUCTIONS),
EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_REFERENCES),
EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_MISSES),
};
static int default_interval = 100000;
static int event_count[MAX_COUNTERS];
static int fd[MAX_NR_CPUS][MAX_COUNTERS];
static int tid = -1;
static int profile_cpu = -1;
static int nr_cpus = 0;
static int nmi = 1;
static int group = 0;
static unsigned int page_size;
static int zero;
static int scale;
static const unsigned int default_count[] = {
1000000,
1000000,
10000,
10000,
1000000,
10000,
};
static char *hw_event_names[] = {
"CPU cycles",
"instructions",
"cache references",
"cache misses",
"branches",
"branch misses",
"bus cycles",
};
static char *sw_event_names[] = {
"cpu clock ticks",
"task clock ticks",
"pagefaults",
"context switches",
"CPU migrations",
"minor faults",
"major faults",
};
struct event_symbol {
__u64 event;
char *symbol;
};
static struct event_symbol event_symbols[] = {
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cpu-cycles", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CPU_CYCLES), "cycles", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_INSTRUCTIONS), "instructions", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_REFERENCES), "cache-references", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_CACHE_MISSES), "cache-misses", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branch-instructions", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_INSTRUCTIONS), "branches", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BRANCH_MISSES), "branch-misses", },
{EID(PERF_TYPE_HARDWARE, PERF_COUNT_BUS_CYCLES), "bus-cycles", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK), "cpu-clock", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK), "task-clock", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "page-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS), "faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MIN), "minor-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_PAGE_FAULTS_MAJ), "major-faults", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "context-switches", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CONTEXT_SWITCHES), "cs", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "cpu-migrations", },
{EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_MIGRATIONS), "migrations", },
};
#define __PERF_COUNTER_FIELD(config, name) \
((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT)
#define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW)
#define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG)
#define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE)
#define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT)
static void display_events_help(void)
{
unsigned int i;
__u64 e;
printf(
" -e EVENT --event=EVENT # symbolic-name abbreviations");
for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
int type, id;
e = event_symbols[i].event;
type = PERF_COUNTER_TYPE(e);
id = PERF_COUNTER_ID(e);
printf("\n %d:%d: %-20s",
type, id, event_symbols[i].symbol);
}
printf("\n"
" rNNN: raw PMU events (eventsel+umask)\n\n");
}
static void display_help(void)
{
printf(
"Usage: perfstat [<events...>] <cmd...>\n\n"
"PerfStat Options (up to %d event types can be specified):\n\n",
MAX_COUNTERS);
display_events_help();
printf(
" -l # scale counter values\n"
" -a # system-wide collection\n");
exit(0);
}
static char *event_name(int ctr)
{
__u64 config = event_id[ctr];
int type = PERF_COUNTER_TYPE(config);
int id = PERF_COUNTER_ID(config);
static char buf[32];
if (PERF_COUNTER_RAW(config)) {
sprintf(buf, "raw 0x%llx", PERF_COUNTER_CONFIG(config));
return buf;
}
switch (type) {
case PERF_TYPE_HARDWARE:
if (id < PERF_HW_EVENTS_MAX)
return hw_event_names[id];
return "unknown-hardware";
case PERF_TYPE_SOFTWARE:
if (id < PERF_SW_EVENTS_MAX)
return sw_event_names[id];
return "unknown-software";
default:
break;
}
return "unknown";
}
/*
* Each event can have multiple symbolic names.
* Symbolic names are (almost) exactly matched.
*/
static __u64 match_event_symbols(char *str)
{
__u64 config, id;
int type;
unsigned int i;
if (sscanf(str, "r%llx", &config) == 1)
return config | PERF_COUNTER_RAW_MASK;
if (sscanf(str, "%d:%llu", &type, &id) == 2)
return EID(type, id);
for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
if (!strncmp(str, event_symbols[i].symbol,
strlen(event_symbols[i].symbol)))
return event_symbols[i].event;
}
return ~0ULL;
}
static int parse_events(char *str)
{
__u64 config;
again:
if (nr_counters == MAX_COUNTERS)
return -1;
config = match_event_symbols(str);
if (config == ~0ULL)
return -1;
event_id[nr_counters] = config;
nr_counters++;
str = strstr(str, ",");
if (str) {
str++;
goto again;
}
return 0;
}
/*
* perfstat
*/
char fault_here[1000000];
static void create_perfstat_counter(int counter)
{
struct perf_counter_hw_event hw_event;
memset(&hw_event, 0, sizeof(hw_event));
hw_event.config = event_id[counter];
hw_event.record_type = 0;
hw_event.nmi = 0;
if (scale)
hw_event.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
PERF_FORMAT_TOTAL_TIME_RUNNING;
if (system_wide) {
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu ++) {
fd[cpu][counter] = sys_perf_counter_open(&hw_event, -1, cpu, -1, 0);
if (fd[cpu][counter] < 0) {
printf("perfstat error: syscall returned with %d (%s)\n",
fd[cpu][counter], strerror(errno));
exit(-1);
}
}
} else {
hw_event.inherit = 1;
hw_event.disabled = 1;
fd[0][counter] = sys_perf_counter_open(&hw_event, 0, -1, -1, 0);
if (fd[0][counter] < 0) {
printf("perfstat error: syscall returned with %d (%s)\n",
fd[0][counter], strerror(errno));
exit(-1);
}
}
}
int do_perfstat(int argc, char *argv[])
{
unsigned long long t0, t1;
int counter;
ssize_t res;
int status;
int pid;
if (!system_wide)
nr_cpus = 1;
for (counter = 0; counter < nr_counters; counter++)
create_perfstat_counter(counter);
argc -= optind;
argv += optind;
if (!argc)
display_help();
/*
* Enable counters and exec the command:
*/
t0 = rdclock();
prctl(PR_TASK_PERF_COUNTERS_ENABLE);
if ((pid = fork()) < 0)
perror("failed to fork");
if (!pid) {
if (execvp(argv[0], argv)) {
perror(argv[0]);
exit(-1);
}
}
while (wait(&status) >= 0)
;
prctl(PR_TASK_PERF_COUNTERS_DISABLE);
t1 = rdclock();
fflush(stdout);
fprintf(stderr, "\n");
fprintf(stderr, " Performance counter stats for \'%s\':\n",
argv[0]);
fprintf(stderr, "\n");
for (counter = 0; counter < nr_counters; counter++) {
int cpu, nv;
__u64 count[3], single_count[3];
int scaled;
count[0] = count[1] = count[2] = 0;
nv = scale ? 3 : 1;
for (cpu = 0; cpu < nr_cpus; cpu ++) {
res = read(fd[cpu][counter],
single_count, nv * sizeof(__u64));
assert(res == nv * sizeof(__u64));
count[0] += single_count[0];
if (scale) {
count[1] += single_count[1];
count[2] += single_count[2];
}
}
scaled = 0;
if (scale) {
if (count[2] == 0) {
fprintf(stderr, " %14s %-20s\n",
"<not counted>", event_name(counter));
continue;
}
if (count[2] < count[1]) {
scaled = 1;
count[0] = (unsigned long long)
((double)count[0] * count[1] / count[2] + 0.5);
}
}
if (event_id[counter] == EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK) ||
event_id[counter] == EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK)) {
double msecs = (double)count[0] / 1000000;
fprintf(stderr, " %14.6f %-20s (msecs)",
msecs, event_name(counter));
} else {
fprintf(stderr, " %14Ld %-20s (events)",
count[0], event_name(counter));
}
if (scaled)
fprintf(stderr, " (scaled from %.2f%%)",
(double) count[2] / count[1] * 100);
fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
fprintf(stderr, " Wall-clock time elapsed: %12.6f msecs\n",
(double)(t1-t0)/1e6);
fprintf(stderr, "\n");
return 0;
}
static void process_options(int argc, char **argv)
{
int error = 0, counter;
for (;;) {
int option_index = 0;
/** Options for getopt */
static struct option long_options[] = {
{"count", required_argument, NULL, 'c'},
{"cpu", required_argument, NULL, 'C'},
{"delay", required_argument, NULL, 'd'},
{"dump_symtab", no_argument, NULL, 'D'},
{"event", required_argument, NULL, 'e'},
{"filter", required_argument, NULL, 'f'},
{"group", required_argument, NULL, 'g'},
{"help", no_argument, NULL, 'h'},
{"nmi", required_argument, NULL, 'n'},
{"munmap_info", no_argument, NULL, 'U'},
{"pid", required_argument, NULL, 'p'},
{"realtime", required_argument, NULL, 'r'},
{"scale", no_argument, NULL, 'l'},
{"symbol", required_argument, NULL, 's'},
{"stat", no_argument, NULL, 'S'},
{"vmlinux", required_argument, NULL, 'x'},
{"zero", no_argument, NULL, 'z'},
{NULL, 0, NULL, 0 }
};
int c = getopt_long(argc, argv, "+:ac:C:d:De:f:g:hln:m:p:r:s:Sx:zMU",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'a': system_wide = 1; break;
case 'c': default_interval = atoi(optarg); break;
case 'C':
/* CPU and PID are mutually exclusive */
if (tid != -1) {
printf("WARNING: CPU switch overriding PID\n");
sleep(1);
tid = -1;
}
profile_cpu = atoi(optarg); break;
case 'e': error = parse_events(optarg); break;
case 'g': group = atoi(optarg); break;
case 'h': display_help(); break;
case 'l': scale = 1; break;
case 'n': nmi = atoi(optarg); break;
case 'p':
/* CPU and PID are mutually exclusive */
if (profile_cpu != -1) {
printf("WARNING: PID switch overriding CPU\n");
sleep(1);
profile_cpu = -1;
}
tid = atoi(optarg); break;
case 'z': zero = 1; break;
default: error = 1; break;
}
}
if (error)
display_help();
if (!nr_counters) {
nr_counters = 8;
}
for (counter = 0; counter < nr_counters; counter++) {
if (event_count[counter])
continue;
event_count[counter] = default_interval;
}
}
int cmd_stat(int argc, char **argv, const char *prefix)
{
page_size = sysconf(_SC_PAGE_SIZE);
process_options(argc, argv);
nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
assert(nr_cpus <= MAX_NR_CPUS);
assert(nr_cpus >= 0);
return do_perfstat(argc, argv);
}

204
Documentation/perf_counter/builtin-top.c
View File

@ -28,25 +28,6 @@
8.54 - ffffffff805001a3 : ip_queue_xmit
*/
/*
* perfstat: /usr/bin/time -alike performance counter statistics utility
It summarizes the counter events of all tasks (and child tasks),
covering all CPUs that the command (or workload) executes on.
It only counts the per-task events of the workload started,
independent of how many other tasks run on those CPUs.
Sample output:
$ ./perfstat -e 1 -e 3 -e 5 ls -lR /usr/include/ >/dev/null
Performance counter stats for 'ls':
163516953 instructions
2295 cache-misses
2855182 branch-misses
*/
/*
* Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
*
@ -149,7 +130,6 @@ asmlinkage int sys_perf_counter_open(
#define EID(type, id) (((__u64)(type) << PERF_COUNTER_TYPE_SHIFT) | (id))
static int run_perfstat = 0;
static int system_wide = 0;
static int nr_counters = 0;
@ -203,7 +183,7 @@ struct source_line {
static struct source_line *lines;
static struct source_line **lines_tail;
const unsigned int default_count[] = {
static const unsigned int default_count[] = {
1000000,
1000000,
10000,
@ -291,26 +271,8 @@ static void display_events_help(void)
" rNNN: raw PMU events (eventsel+umask)\n\n");
}
static void display_perfstat_help(void)
{
printf(
"Usage: perfstat [<events...>] <cmd...>\n\n"
"PerfStat Options (up to %d event types can be specified):\n\n",
MAX_COUNTERS);
display_events_help();
printf(
" -l # scale counter values\n"
" -a # system-wide collection\n");
exit(0);
}
static void display_help(void)
{
if (run_perfstat)
return display_perfstat_help();
printf(
"Usage: kerneltop [<options>]\n"
" Or: kerneltop -S [<options>] COMMAND [ARGS]\n\n"
@ -320,8 +282,6 @@ static void display_help(void)
display_events_help();
printf(
" -S --stat # perfstat COMMAND\n"
" -a # system-wide collection (for perfstat)\n\n"
" -c CNT --count=CNT # event period to sample\n\n"
" -C CPU --cpu=CPU # CPU (-1 for all) [default: -1]\n"
" -p PID --pid=PID # PID of sampled task (-1 for all) [default: -1]\n\n"
@ -420,151 +380,6 @@ again:
return 0;
}
/*
* perfstat
*/
char fault_here[1000000];
static void create_perfstat_counter(int counter)
{
struct perf_counter_hw_event hw_event;
memset(&hw_event, 0, sizeof(hw_event));
hw_event.config = event_id[counter];
hw_event.record_type = 0;
hw_event.nmi = 0;
if (scale)
hw_event.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
PERF_FORMAT_TOTAL_TIME_RUNNING;
if (system_wide) {
int cpu;
for (cpu = 0; cpu < nr_cpus; cpu ++) {
fd[cpu][counter] = sys_perf_counter_open(&hw_event, -1, cpu, -1, 0);
if (fd[cpu][counter] < 0) {
printf("perfstat error: syscall returned with %d (%s)\n",
fd[cpu][counter], strerror(errno));
exit(-1);
}
}
} else {
hw_event.inherit = 1;
hw_event.disabled = 1;
fd[0][counter] = sys_perf_counter_open(&hw_event, 0, -1, -1, 0);
if (fd[0][counter] < 0) {
printf("perfstat error: syscall returned with %d (%s)\n",
fd[0][counter], strerror(errno));
exit(-1);
}
}
}
int do_perfstat(int argc, char *argv[])
{
unsigned long long t0, t1;
int counter;
ssize_t res;
int status;
int pid;
if (!system_wide)
nr_cpus = 1;
for (counter = 0; counter < nr_counters; counter++)
create_perfstat_counter(counter);
argc -= optind;
argv += optind;
if (!argc)
display_help();
/*
* Enable counters and exec the command:
*/
t0 = rdclock();
prctl(PR_TASK_PERF_COUNTERS_ENABLE);
if ((pid = fork()) < 0)
perror("failed to fork");
if (!pid) {
if (execvp(argv[0], argv)) {
perror(argv[0]);
exit(-1);
}
}
while (wait(&status) >= 0)
;
prctl(PR_TASK_PERF_COUNTERS_DISABLE);
t1 = rdclock();
fflush(stdout);
fprintf(stderr, "\n");
fprintf(stderr, " Performance counter stats for \'%s\':\n",
argv[0]);
fprintf(stderr, "\n");
for (counter = 0; counter < nr_counters; counter++) {
int cpu, nv;
__u64 count[3], single_count[3];
int scaled;
count[0] = count[1] = count[2] = 0;
nv = scale ? 3 : 1;
for (cpu = 0; cpu < nr_cpus; cpu ++) {
res = read(fd[cpu][counter],
single_count, nv * sizeof(__u64));
assert(res == nv * sizeof(__u64));
count[0] += single_count[0];
if (scale) {
count[1] += single_count[1];
count[2] += single_count[2];
}
}
scaled = 0;
if (scale) {
if (count[2] == 0) {
fprintf(stderr, " %14s %-20s\n",
"<not counted>", event_name(counter));
continue;
}
if (count[2] < count[1]) {
scaled = 1;
count[0] = (unsigned long long)
((double)count[0] * count[1] / count[2] + 0.5);
}
}
if (event_id[counter] == EID(PERF_TYPE_SOFTWARE, PERF_COUNT_CPU_CLOCK) ||
event_id[counter] == EID(PERF_TYPE_SOFTWARE, PERF_COUNT_TASK_CLOCK)) {
double msecs = (double)count[0] / 1000000;
fprintf(stderr, " %14.6f %-20s (msecs)",
msecs, event_name(counter));
} else {
fprintf(stderr, " %14Ld %-20s (events)",
count[0], event_name(counter));
}
if (scaled)
fprintf(stderr, " (scaled from %.2f%%)",
(double) count[2] / count[1] * 100);
fprintf(stderr, "\n");
}
fprintf(stderr, "\n");
fprintf(stderr, " Wall-clock time elapsed: %12.6f msecs\n",
(double)(t1-t0)/1e6);
fprintf(stderr, "\n");
return 0;
}
/*
* Symbols
*/
@ -805,7 +620,7 @@ static int read_symbol(FILE *in, struct sym_entry *s)
return 0;
}
int compare_addr(const void *__sym1, const void *__sym2)
static int compare_addr(const void *__sym1, const void *__sym2)
{
const struct sym_entry *sym1 = __sym1, *sym2 = __sym2;
@ -1070,9 +885,6 @@ static void process_options(int argc, char **argv)
{
int error = 0, counter;
if (strstr(argv[0], "perfstat"))
run_perfstat = 1;
for (;;) {
int option_index = 0;
/** Options for getopt */
@ -1134,7 +946,6 @@ static void process_options(int argc, char **argv)
tid = atoi(optarg); break;
case 'r': realtime_prio = atoi(optarg); break;
case 's': sym_filter = strdup(optarg); break;
case 'S': run_perfstat = 1; break;
case 'x': vmlinux = strdup(optarg); break;
case 'z': zero = 1; break;
case 'm': mmap_pages = atoi(optarg); break;
@ -1147,12 +958,8 @@ static void process_options(int argc, char **argv)
display_help();
if (!nr_counters) {
if (run_perfstat)
nr_counters = 8;
else {
nr_counters = 1;
event_id[0] = 0;
}
nr_counters = 1;
event_id[0] = 0;
}
for (counter = 0; counter < nr_counters; counter++) {
@ -1308,9 +1115,6 @@ int cmd_top(int argc, char **argv, const char *prefix)
assert(nr_cpus <= MAX_NR_CPUS);
assert(nr_cpus >= 0);
if (run_perfstat)
return do_perfstat(argc, argv);
if (tid != -1 || profile_cpu != -1)
nr_cpus = 1;

3
Documentation/perf_counter/builtin.h
View File

@ -14,5 +14,6 @@ extern void prune_packed_objects(int);
extern int read_line_with_nul(char *buf, int size, FILE *file);
extern int check_pager_config(const char *cmd);
extern int cmd_top(int argc, const char **argv, const char *prefix);
extern int cmd_top(int argc, char **argv, const char *prefix);
extern int cmd_stat(int argc, char **argv, const char *prefix);
#endif

1
Documentation/perf_counter/command-list.txt
View File

@ -1,4 +1,5 @@
# List of known perf commands.
# command name category [deprecated] [common]
perf-top mainporcelain common
perf-stat mainporcelain common

1409
Documentation/perf_counter/kerneltop.c
View File

File diff suppressed because it is too large Load Diff

1
Documentation/perf_counter/perf.c
View File

@ -249,6 +249,7 @@ static void handle_internal_command(int argc, const char **argv)
const char *cmd = argv[0];
static struct cmd_struct commands[] = {
{ "top", cmd_top, 0 },
{ "stat", cmd_stat, 0 },
};
int i;
static const char ext[] = STRIP_EXTENSION;