perf/core improvements and fixes

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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull in the latest perf/core improvements and fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2012-01-26 12:11:41 +01:00
commit 939ddcfa60
37 changed files with 597 additions and 47 deletions

View file

@ -58,6 +58,10 @@ OPTIONS
--tid=::
Record events on existing thread ID.
-u::
--uid=::
Record events in threads owned by uid. Name or number.
-r::
--realtime=::
Collect data with this RT SCHED_FIFO priority.

View file

@ -78,6 +78,10 @@ Default is to monitor all CPUS.
--tid=<tid>::
Profile events on existing thread ID.
-u::
--uid=::
Record events in threads owned by uid. Name or number.
-r <priority>::
--realtime=<priority>::
Collect data with this RT SCHED_FIFO priority.

View file

@ -61,7 +61,7 @@ ifeq ($(ARCH),x86_64)
ifeq (${IS_X86_64}, 1)
RAW_ARCH := x86_64
ARCH_CFLAGS := -DARCH_X86_64
ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S
ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
endif
endif
@ -104,7 +104,7 @@ endif
CFLAGS = -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) -D_FORTIFY_SOURCE=2 $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
EXTLIBS = -lpthread -lrt -lelf -lm
ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
ALL_LDFLAGS = $(LDFLAGS)
STRIP ?= strip
@ -168,10 +168,7 @@ endif
### --- END CONFIGURATION SECTION ---
# Those must not be GNU-specific; they are shared with perl/ which may
# be built by a different compiler. (Note that this is an artifact now
# but it still might be nice to keep that distinction.)
BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include
BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
BASIC_LDFLAGS =
# Guard against environment variables
@ -362,8 +359,10 @@ BUILTIN_OBJS += $(OUTPUT)bench/sched-messaging.o
BUILTIN_OBJS += $(OUTPUT)bench/sched-pipe.o
ifeq ($(RAW_ARCH),x86_64)
BUILTIN_OBJS += $(OUTPUT)bench/mem-memcpy-x86-64-asm.o
BUILTIN_OBJS += $(OUTPUT)bench/mem-memset-x86-64-asm.o
endif
BUILTIN_OBJS += $(OUTPUT)bench/mem-memcpy.o
BUILTIN_OBJS += $(OUTPUT)bench/mem-memset.o
BUILTIN_OBJS += $(OUTPUT)builtin-diff.o
BUILTIN_OBJS += $(OUTPUT)builtin-evlist.o

View file

@ -4,6 +4,7 @@
extern int bench_sched_messaging(int argc, const char **argv, const char *prefix);
extern int bench_sched_pipe(int argc, const char **argv, const char *prefix);
extern int bench_mem_memcpy(int argc, const char **argv, const char *prefix __used);
extern int bench_mem_memset(int argc, const char **argv, const char *prefix);
#define BENCH_FORMAT_DEFAULT_STR "default"
#define BENCH_FORMAT_DEFAULT 0

View file

@ -2,3 +2,11 @@
MEMCPY_FN(__memcpy,
"x86-64-unrolled",
"unrolled memcpy() in arch/x86/lib/memcpy_64.S")
MEMCPY_FN(memcpy_c,
"x86-64-movsq",
"movsq-based memcpy() in arch/x86/lib/memcpy_64.S")
MEMCPY_FN(memcpy_c_e,
"x86-64-movsb",
"movsb-based memcpy() in arch/x86/lib/memcpy_64.S")

View file

@ -1,2 +1,6 @@
#define memcpy MEMCPY /* don't hide glibc's memcpy() */
#define altinstr_replacement text
#define globl p2align 4; .globl
#define Lmemcpy_c globl memcpy_c; memcpy_c
#define Lmemcpy_c_e globl memcpy_c_e; memcpy_c_e
#include "../../../arch/x86/lib/memcpy_64.S"

View file

@ -24,6 +24,7 @@
static const char *length_str = "1MB";
static const char *routine = "default";
static int iterations = 1;
static bool use_clock;
static int clock_fd;
static bool only_prefault;
@ -35,6 +36,8 @@ static const struct option options[] = {
"available unit: B, MB, GB (upper and lower)"),
OPT_STRING('r', "routine", &routine, "default",
"Specify routine to copy"),
OPT_INTEGER('i', "iterations", &iterations,
"repeat memcpy() invocation this number of times"),
OPT_BOOLEAN('c', "clock", &use_clock,
"Use CPU clock for measuring"),
OPT_BOOLEAN('o', "only-prefault", &only_prefault,
@ -121,6 +124,7 @@ static u64 do_memcpy_clock(memcpy_t fn, size_t len, bool prefault)
{
u64 clock_start = 0ULL, clock_end = 0ULL;
void *src = NULL, *dst = NULL;
int i;
alloc_mem(&src, &dst, len);
@ -128,7 +132,8 @@ static u64 do_memcpy_clock(memcpy_t fn, size_t len, bool prefault)
fn(dst, src, len);
clock_start = get_clock();
fn(dst, src, len);
for (i = 0; i < iterations; ++i)
fn(dst, src, len);
clock_end = get_clock();
free(src);
@ -140,6 +145,7 @@ static double do_memcpy_gettimeofday(memcpy_t fn, size_t len, bool prefault)
{
struct timeval tv_start, tv_end, tv_diff;
void *src = NULL, *dst = NULL;
int i;
alloc_mem(&src, &dst, len);
@ -147,7 +153,8 @@ static double do_memcpy_gettimeofday(memcpy_t fn, size_t len, bool prefault)
fn(dst, src, len);
BUG_ON(gettimeofday(&tv_start, NULL));
fn(dst, src, len);
for (i = 0; i < iterations; ++i)
fn(dst, src, len);
BUG_ON(gettimeofday(&tv_end, NULL));
timersub(&tv_end, &tv_start, &tv_diff);

View file

@ -0,0 +1,12 @@
#ifdef ARCH_X86_64
#define MEMSET_FN(fn, name, desc) \
extern void *fn(void *, int, size_t);
#include "mem-memset-x86-64-asm-def.h"
#undef MEMSET_FN
#endif

View file

@ -0,0 +1,12 @@
MEMSET_FN(__memset,
"x86-64-unrolled",
"unrolled memset() in arch/x86/lib/memset_64.S")
MEMSET_FN(memset_c,
"x86-64-stosq",
"movsq-based memset() in arch/x86/lib/memset_64.S")
MEMSET_FN(memset_c_e,
"x86-64-stosb",
"movsb-based memset() in arch/x86/lib/memset_64.S")

View file

@ -0,0 +1,6 @@
#define memset MEMSET /* don't hide glibc's memset() */
#define altinstr_replacement text
#define globl p2align 4; .globl
#define Lmemset_c globl memset_c; memset_c
#define Lmemset_c_e globl memset_c_e; memset_c_e
#include "../../../arch/x86/lib/memset_64.S"

View file

@ -0,0 +1,298 @@
/*
* mem-memset.c
*
* memset: Simple memory set in various ways
*
* Trivial clone of mem-memcpy.c.
*/
#include <ctype.h>
#include "../perf.h"
#include "../util/util.h"
#include "../util/parse-options.h"
#include "../util/header.h"
#include "bench.h"
#include "mem-memset-arch.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <errno.h>
#define K 1024
static const char *length_str = "1MB";
static const char *routine = "default";
static int iterations = 1;
static bool use_clock;
static int clock_fd;
static bool only_prefault;
static bool no_prefault;
static const struct option options[] = {
OPT_STRING('l', "length", &length_str, "1MB",
"Specify length of memory to copy. "
"available unit: B, MB, GB (upper and lower)"),
OPT_STRING('r', "routine", &routine, "default",
"Specify routine to copy"),
OPT_INTEGER('i', "iterations", &iterations,
"repeat memset() invocation this number of times"),
OPT_BOOLEAN('c', "clock", &use_clock,
"Use CPU clock for measuring"),
OPT_BOOLEAN('o', "only-prefault", &only_prefault,
"Show only the result with page faults before memset()"),
OPT_BOOLEAN('n', "no-prefault", &no_prefault,
"Show only the result without page faults before memset()"),
OPT_END()
};
typedef void *(*memset_t)(void *, int, size_t);
struct routine {
const char *name;
const char *desc;
memset_t fn;
};
static const struct routine routines[] = {
{ "default",
"Default memset() provided by glibc",
memset },
#ifdef ARCH_X86_64
#define MEMSET_FN(fn, name, desc) { name, desc, fn },
#include "mem-memset-x86-64-asm-def.h"
#undef MEMSET_FN
#endif
{ NULL,
NULL,
NULL }
};
static const char * const bench_mem_memset_usage[] = {
"perf bench mem memset <options>",
NULL
};
static struct perf_event_attr clock_attr = {
.type = PERF_TYPE_HARDWARE,
.config = PERF_COUNT_HW_CPU_CYCLES
};
static void init_clock(void)
{
clock_fd = sys_perf_event_open(&clock_attr, getpid(), -1, -1, 0);
if (clock_fd < 0 && errno == ENOSYS)
die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
else
BUG_ON(clock_fd < 0);
}
static u64 get_clock(void)
{
int ret;
u64 clk;
ret = read(clock_fd, &clk, sizeof(u64));
BUG_ON(ret != sizeof(u64));
return clk;
}
static double timeval2double(struct timeval *ts)
{
return (double)ts->tv_sec +
(double)ts->tv_usec / (double)1000000;
}
static void alloc_mem(void **dst, size_t length)
{
*dst = zalloc(length);
if (!dst)
die("memory allocation failed - maybe length is too large?\n");
}
static u64 do_memset_clock(memset_t fn, size_t len, bool prefault)
{
u64 clock_start = 0ULL, clock_end = 0ULL;
void *dst = NULL;
int i;
alloc_mem(&dst, len);
if (prefault)
fn(dst, -1, len);
clock_start = get_clock();
for (i = 0; i < iterations; ++i)
fn(dst, i, len);
clock_end = get_clock();
free(dst);
return clock_end - clock_start;
}
static double do_memset_gettimeofday(memset_t fn, size_t len, bool prefault)
{
struct timeval tv_start, tv_end, tv_diff;
void *dst = NULL;
int i;
alloc_mem(&dst, len);
if (prefault)
fn(dst, -1, len);
BUG_ON(gettimeofday(&tv_start, NULL));
for (i = 0; i < iterations; ++i)
fn(dst, i, len);
BUG_ON(gettimeofday(&tv_end, NULL));
timersub(&tv_end, &tv_start, &tv_diff);
free(dst);
return (double)((double)len / timeval2double(&tv_diff));
}
#define pf (no_prefault ? 0 : 1)
#define print_bps(x) do { \
if (x < K) \
printf(" %14lf B/Sec", x); \
else if (x < K * K) \
printf(" %14lfd KB/Sec", x / K); \
else if (x < K * K * K) \
printf(" %14lf MB/Sec", x / K / K); \
else \
printf(" %14lf GB/Sec", x / K / K / K); \
} while (0)
int bench_mem_memset(int argc, const char **argv,
const char *prefix __used)
{
int i;
size_t len;
double result_bps[2];
u64 result_clock[2];
argc = parse_options(argc, argv, options,
bench_mem_memset_usage, 0);
if (use_clock)
init_clock();
len = (size_t)perf_atoll((char *)length_str);
result_clock[0] = result_clock[1] = 0ULL;
result_bps[0] = result_bps[1] = 0.0;
if ((s64)len <= 0) {
fprintf(stderr, "Invalid length:%s\n", length_str);
return 1;
}
/* same to without specifying either of prefault and no-prefault */
if (only_prefault && no_prefault)
only_prefault = no_prefault = false;
for (i = 0; routines[i].name; i++) {
if (!strcmp(routines[i].name, routine))
break;
}
if (!routines[i].name) {
printf("Unknown routine:%s\n", routine);
printf("Available routines...\n");
for (i = 0; routines[i].name; i++) {
printf("\t%s ... %s\n",
routines[i].name, routines[i].desc);
}
return 1;
}
if (bench_format == BENCH_FORMAT_DEFAULT)
printf("# Copying %s Bytes ...\n\n", length_str);
if (!only_prefault && !no_prefault) {
/* show both of results */
if (use_clock) {
result_clock[0] =
do_memset_clock(routines[i].fn, len, false);
result_clock[1] =
do_memset_clock(routines[i].fn, len, true);
} else {
result_bps[0] =
do_memset_gettimeofday(routines[i].fn,
len, false);
result_bps[1] =
do_memset_gettimeofday(routines[i].fn,
len, true);
}
} else {
if (use_clock) {
result_clock[pf] =
do_memset_clock(routines[i].fn,
len, only_prefault);
} else {
result_bps[pf] =
do_memset_gettimeofday(routines[i].fn,
len, only_prefault);
}
}
switch (bench_format) {
case BENCH_FORMAT_DEFAULT:
if (!only_prefault && !no_prefault) {
if (use_clock) {
printf(" %14lf Clock/Byte\n",
(double)result_clock[0]
/ (double)len);
printf(" %14lf Clock/Byte (with prefault)\n ",
(double)result_clock[1]
/ (double)len);
} else {
print_bps(result_bps[0]);
printf("\n");
print_bps(result_bps[1]);
printf(" (with prefault)\n");
}
} else {
if (use_clock) {
printf(" %14lf Clock/Byte",
(double)result_clock[pf]
/ (double)len);
} else
print_bps(result_bps[pf]);
printf("%s\n", only_prefault ? " (with prefault)" : "");
}
break;
case BENCH_FORMAT_SIMPLE:
if (!only_prefault && !no_prefault) {
if (use_clock) {
printf("%lf %lf\n",
(double)result_clock[0] / (double)len,
(double)result_clock[1] / (double)len);
} else {
printf("%lf %lf\n",
result_bps[0], result_bps[1]);
}
} else {
if (use_clock) {
printf("%lf\n", (double)result_clock[pf]
/ (double)len);
} else
printf("%lf\n", result_bps[pf]);
}
break;
default:
/* reaching this means there's some disaster: */
die("unknown format: %d\n", bench_format);
break;
}
return 0;
}

View file

@ -52,6 +52,9 @@ static struct bench_suite mem_suites[] = {
{ "memcpy",
"Simple memory copy in various ways",
bench_mem_memcpy },
{ "memset",
"Simple memory set in various ways",
bench_mem_memset },
suite_all,
{ NULL,
NULL,

View file

@ -20,7 +20,6 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#define _GNU_SOURCE
#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
@ -31,7 +30,6 @@
#include <stdlib.h>
#include <string.h>
#undef _GNU_SOURCE
#include "perf.h"
#include "builtin.h"
#include "util/util.h"

View file

@ -44,6 +44,7 @@ struct perf_record {
struct perf_evlist *evlist;
struct perf_session *session;
const char *progname;
const char *uid_str;
int output;
unsigned int page_size;
int realtime_prio;
@ -727,6 +728,7 @@ const struct option record_options[] = {
OPT_CALLBACK('G', "cgroup", &record.evlist, "name",
"monitor event in cgroup name only",
parse_cgroups),
OPT_STRING('u', "uid", &record.uid_str, "user", "user to profile"),
OPT_END()
};
@ -748,7 +750,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
argc = parse_options(argc, argv, record_options, record_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc && rec->opts.target_pid == -1 && rec->opts.target_tid == -1 &&
!rec->opts.system_wide && !rec->opts.cpu_list)
!rec->opts.system_wide && !rec->opts.cpu_list && !rec->uid_str)
usage_with_options(record_usage, record_options);
if (rec->force && rec->append_file) {
@ -788,11 +790,17 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
goto out_symbol_exit;
}
rec->opts.uid = parse_target_uid(rec->uid_str, rec->opts.target_tid,
rec->opts.target_pid);
if (rec->uid_str != NULL && rec->opts.uid == UINT_MAX - 1)
goto out_free_fd;
if (rec->opts.target_pid != -1)
rec->opts.target_tid = rec->opts.target_pid;
if (perf_evlist__create_maps(evsel_list, rec->opts.target_pid,
rec->opts.target_tid, rec->opts.cpu_list) < 0)
rec->opts.target_tid, rec->opts.uid,
rec->opts.cpu_list) < 0)
usage_with_options(record_usage, record_options);
list_for_each_entry(pos, &evsel_list->entries, node) {

View file

@ -1201,7 +1201,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __used)
if (target_pid != -1)
target_tid = target_pid;
evsel_list->threads = thread_map__new(target_pid, target_tid);
evsel_list->threads = thread_map__new(target_pid, target_tid, UINT_MAX);
if (evsel_list->threads == NULL) {
pr_err("Problems finding threads of monitor\n");
usage_with_options(stat_usage, options);

View file

@ -276,7 +276,7 @@ static int test__open_syscall_event(void)
return -1;
}
threads = thread_map__new(-1, getpid());
threads = thread_map__new(-1, getpid(), UINT_MAX);
if (threads == NULL) {
pr_debug("thread_map__new\n");
return -1;
@ -342,7 +342,7 @@ static int test__open_syscall_event_on_all_cpus(void)
return -1;
}
threads = thread_map__new(-1, getpid());
threads = thread_map__new(-1, getpid(), UINT_MAX);
if (threads == NULL) {
pr_debug("thread_map__new\n");
return -1;
@ -490,7 +490,7 @@ static int test__basic_mmap(void)
expected_nr_events[i] = random() % 257;
}
threads = thread_map__new(-1, getpid());
threads = thread_map__new(-1, getpid(), UINT_MAX);
if (threads == NULL) {
pr_debug("thread_map__new\n");
return -1;
@ -1054,7 +1054,7 @@ static int test__PERF_RECORD(void)
* we're monitoring, the one forked there.
*/
err = perf_evlist__create_maps(evlist, opts.target_pid,
opts.target_tid, opts.cpu_list);
opts.target_tid, UINT_MAX, opts.cpu_list);
if (err < 0) {
pr_debug("Not enough memory to create thread/cpu maps\n");
goto out_delete_evlist;

View file

@ -64,7 +64,6 @@
#include <linux/unistd.h>
#include <linux/types.h>
void get_term_dimensions(struct winsize *ws)
{
char *s = getenv("LINES");
@ -537,10 +536,20 @@ static void perf_top__sort_new_samples(void *arg)
static void *display_thread_tui(void *arg)
{
struct perf_evsel *pos;
struct perf_top *top = arg;
const char *help = "For a higher level overview, try: perf top --sort comm,dso";
perf_top__sort_new_samples(top);
/*
* Initialize the uid_filter_str, in the future the TUI will allow
* Zooming in/out UIDs. For now juse use whatever the user passed
* via --uid.
*/
list_for_each_entry(pos, &top->evlist->entries, node)
pos->hists.uid_filter_str = top->uid_str;
perf_evlist__tui_browse_hists(top->evlist, help,
perf_top__sort_new_samples,
top, top->delay_secs);
@ -949,7 +958,7 @@ static int __cmd_top(struct perf_top *top)
if (ret)
goto out_delete;
if (top->target_tid != -1)
if (top->target_tid != -1 || top->uid != UINT_MAX)
perf_event__synthesize_thread_map(&top->tool, top->evlist->threads,
perf_event__process,
&top->session->host_machine);
@ -1089,6 +1098,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
.delay_secs = 2,
.target_pid = -1,
.target_tid = -1,
.uid = UINT_MAX,
.freq = 1000, /* 1 KHz */
.sample_id_all_avail = true,
.mmap_pages = 128,
@ -1162,6 +1172,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
"Display raw encoding of assembly instructions (default)"),
OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
"Specify disassembler style (e.g. -M intel for intel syntax)"),
OPT_STRING('u', "uid", &top.uid_str, "user", "user to profile"),
OPT_END()
};
@ -1187,6 +1198,10 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
setup_browser(false);
top.uid = parse_target_uid(top.uid_str, top.target_tid, top.target_pid);
if (top.uid_str != NULL && top.uid == UINT_MAX - 1)
goto out_delete_evlist;
/* CPU and PID are mutually exclusive */
if (top.target_tid > 0 && top.cpu_list) {
printf("WARNING: PID switch overriding CPU\n");
@ -1198,7 +1213,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
top.target_tid = top.target_pid;
if (perf_evlist__create_maps(top.evlist, top.target_pid,
top.target_tid, top.cpu_list) < 0)
top.target_tid, top.uid, top.cpu_list) < 0)
usage_with_options(top_usage, options);
if (!top.evlist->nr_entries &&
@ -1262,6 +1277,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
status = __cmd_top(&top);
out_delete_evlist:
perf_evlist__delete(top.evlist);
return status;

View file

@ -188,6 +188,7 @@ void pthread__unblock_sigwinch(void);
struct perf_record_opts {
pid_t target_pid;
pid_t target_tid;
uid_t uid;
bool call_graph;
bool group;
bool inherit_stat;

View file

@ -166,6 +166,17 @@ struct cpu_map *cpu_map__new(const char *cpu_list)
return cpus;
}
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp)
{
int i;
size_t printed = fprintf(fp, "%d cpu%s: ",
map->nr, map->nr > 1 ? "s" : "");
for (i = 0; i < map->nr; ++i)
printed += fprintf(fp, "%s%d", i ? ", " : "", map->map[i]);
return printed + fprintf(fp, "\n");
}
struct cpu_map *cpu_map__dummy_new(void)
{
struct cpu_map *cpus = malloc(sizeof(*cpus) + sizeof(int));

View file

@ -1,6 +1,8 @@
#ifndef __PERF_CPUMAP_H
#define __PERF_CPUMAP_H
#include <stdio.h>
struct cpu_map {
int nr;
int map[];
@ -10,4 +12,6 @@ struct cpu_map *cpu_map__new(const char *cpu_list);
struct cpu_map *cpu_map__dummy_new(void);
void cpu_map__delete(struct cpu_map *map);
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
#endif /* __PERF_CPUMAP_H */

View file

@ -594,14 +594,14 @@ int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages,
}
int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
pid_t target_tid, const char *cpu_list)
pid_t target_tid, uid_t uid, const char *cpu_list)
{
evlist->threads = thread_map__new(target_pid, target_tid);
evlist->threads = thread_map__new(target_pid, target_tid, uid);
if (evlist->threads == NULL)
return -1;
if (cpu_list == NULL && target_tid != -1)
if (uid != UINT_MAX || (cpu_list == NULL && target_tid != -1))
evlist->cpus = cpu_map__dummy_new();
else
evlist->cpus = cpu_map__new(cpu_list);

View file

@ -107,7 +107,7 @@ static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
}
int perf_evlist__create_maps(struct perf_evlist *evlist, pid_t target_pid,
pid_t target_tid, const char *cpu_list);
pid_t tid, uid_t uid, const char *cpu_list);
void perf_evlist__delete_maps(struct perf_evlist *evlist);
int perf_evlist__set_filters(struct perf_evlist *evlist);

View file

@ -2105,7 +2105,7 @@ int perf_event__synthesize_event_type(struct perf_tool *tool,
strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1);
ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE;
size = strlen(name);
size = strlen(ev.event_type.event_type.name);
size = ALIGN(size, sizeof(u64));
ev.event_type.header.size = sizeof(ev.event_type) -
(sizeof(ev.event_type.event_type.name) - size);

View file

@ -55,6 +55,7 @@ struct hists {
u64 nr_entries;
const struct thread *thread_filter;
const struct dso *dso_filter;
const char *uid_filter_str;
pthread_mutex_t lock;
struct events_stats stats;
u64 event_stream;

View file

@ -2,10 +2,12 @@
#ifndef PERF_DWARF2_H
#define PERF_DWARF2_H
/* dwarf2.h ... dummy header file for including arch/x86/lib/memcpy_64.S */
/* dwarf2.h ... dummy header file for including arch/x86/lib/mem{cpy,set}_64.S */
#define CFI_STARTPROC
#define CFI_ENDPROC
#define CFI_REMEMBER_STATE
#define CFI_RESTORE_STATE
#endif /* PERF_DWARF2_H */

View file

@ -19,7 +19,6 @@
*
*/
#define _GNU_SOURCE
#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
@ -33,7 +32,6 @@
#include <limits.h>
#include <elf.h>
#undef _GNU_SOURCE
#include "util.h"
#include "event.h"
#include "string.h"
@ -1731,7 +1729,7 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
}
ret = 0;
printf("Add new event%s\n", (ntevs > 1) ? "s:" : ":");
printf("Added new event%s\n", (ntevs > 1) ? "s:" : ":");
for (i = 0; i < ntevs; i++) {
tev = &tevs[i];
if (pev->event)
@ -1786,7 +1784,7 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
if (ret >= 0) {
/* Show how to use the event. */
printf("\nYou can now use it on all perf tools, such as:\n\n");
printf("\nYou can now use it in all perf tools, such as:\n\n");
printf("\tperf record -e %s:%s -aR sleep 1\n\n", tev->group,
tev->event);
}
@ -1961,7 +1959,7 @@ static int __del_trace_probe_event(int fd, struct str_node *ent)
goto error;
}
printf("Remove event: %s\n", ent->s);
printf("Removed event: %s\n", ent->s);
return 0;
error:
pr_warning("Failed to delete event: %s\n", strerror(-ret));

View file

@ -425,14 +425,14 @@ struct pyrf_thread_map {
static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads,
PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "pid", "tid", NULL };
int pid = -1, tid = -1;
static char *kwlist[] = { "pid", "tid", "uid", NULL };
int pid = -1, tid = -1, uid = UINT_MAX;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii",
kwlist, &pid, &tid))
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|iii",
kwlist, &pid, &tid, &uid))
return -1;
pthreads->threads = thread_map__new(pid, tid);
pthreads->threads = thread_map__new(pid, tid, uid);
if (pthreads->threads == NULL)
return -1;
return 0;

View file

@ -1,4 +1,3 @@
#define _GNU_SOURCE
#include <ctype.h>
#include <dirent.h>
#include <errno.h>

View file

@ -1,6 +1,11 @@
#include <dirent.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "thread_map.h"
/* Skip "." and ".." directories */
@ -23,7 +28,7 @@ struct thread_map *thread_map__new_by_pid(pid_t pid)
sprintf(name, "/proc/%d/task", pid);
items = scandir(name, &namelist, filter, NULL);
if (items <= 0)
return NULL;
return NULL;
threads = malloc(sizeof(*threads) + sizeof(pid_t) * items);
if (threads != NULL) {
@ -51,10 +56,99 @@ struct thread_map *thread_map__new_by_tid(pid_t tid)
return threads;
}
struct thread_map *thread_map__new(pid_t pid, pid_t tid)
struct thread_map *thread_map__new_by_uid(uid_t uid)
{
DIR *proc;
int max_threads = 32, items, i;
char path[256];
struct dirent dirent, *next, **namelist = NULL;
struct thread_map *threads = malloc(sizeof(*threads) +
max_threads * sizeof(pid_t));
if (threads == NULL)
goto out;
proc = opendir("/proc");
if (proc == NULL)
goto out_free_threads;
threads->nr = 0;
while (!readdir_r(proc, &dirent, &next) && next) {
char *end;
bool grow = false;
struct stat st;
pid_t pid = strtol(dirent.d_name, &end, 10);
if (*end) /* only interested in proper numerical dirents */
continue;
snprintf(path, sizeof(path), "/proc/%s", dirent.d_name);
if (stat(path, &st) != 0)
continue;
if (st.st_uid != uid)
continue;
snprintf(path, sizeof(path), "/proc/%d/task", pid);
items = scandir(path, &namelist, filter, NULL);
if (items <= 0)
goto out_free_closedir;
while (threads->nr + items >= max_threads) {
max_threads *= 2;
grow = true;
}
if (grow) {
struct thread_map *tmp;
tmp = realloc(threads, (sizeof(*threads) +
max_threads * sizeof(pid_t)));
if (tmp == NULL)
goto out_free_namelist;
threads = tmp;
}
for (i = 0; i < items; i++)
threads->map[threads->nr + i] = atoi(namelist[i]->d_name);
for (i = 0; i < items; i++)
free(namelist[i]);
free(namelist);
threads->nr += items;
}
out_closedir:
closedir(proc);
out:
return threads;
out_free_threads:
free(threads);
return NULL;
out_free_namelist:
for (i = 0; i < items; i++)
free(namelist[i]);
free(namelist);
out_free_closedir:
free(threads);
threads = NULL;
goto out_closedir;
}
struct thread_map *thread_map__new(pid_t pid, pid_t tid, uid_t uid)
{
if (pid != -1)
return thread_map__new_by_pid(pid);
if (tid == -1 && uid != UINT_MAX)
return thread_map__new_by_uid(uid);
return thread_map__new_by_tid(tid);
}
@ -62,3 +156,14 @@ void thread_map__delete(struct thread_map *threads)
{
free(threads);
}
size_t thread_map__fprintf(struct thread_map *threads, FILE *fp)
{
int i;
size_t printed = fprintf(fp, "%d thread%s: ",
threads->nr, threads->nr > 1 ? "s" : "");
for (i = 0; i < threads->nr; ++i)
printed += fprintf(fp, "%s%d", i ? ", " : "", threads->map[i]);
return printed + fprintf(fp, "\n");
}

View file

@ -2,6 +2,7 @@
#define __PERF_THREAD_MAP_H
#include <sys/types.h>
#include <stdio.h>
struct thread_map {
int nr;
@ -10,6 +11,10 @@ struct thread_map {
struct thread_map *thread_map__new_by_pid(pid_t pid);
struct thread_map *thread_map__new_by_tid(pid_t tid);
struct thread_map *thread_map__new(pid_t pid, pid_t tid);
struct thread_map *thread_map__new_by_uid(uid_t uid);
struct thread_map *thread_map__new(pid_t pid, pid_t tid, uid_t uid);
void thread_map__delete(struct thread_map *threads);
size_t thread_map__fprintf(struct thread_map *threads, FILE *fp);
#endif /* __PERF_THREAD_MAP_H */

View file

@ -75,6 +75,9 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
else if (top->target_tid != -1)
ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %d",
top->target_tid);
else if (top->uid_str != NULL)
ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
top->uid_str);
else
ret += SNPRINTF(bf + ret, size - ret, " (all");

View file

@ -24,6 +24,7 @@ struct perf_top {
int print_entries, count_filter, delay_secs;
int freq;
pid_t target_pid, target_tid;
uid_t uid;
bool hide_kernel_symbols, hide_user_symbols, zero;
bool system_wide;
bool use_tui, use_stdio;
@ -45,6 +46,7 @@ struct perf_top {
int realtime_prio;
int sym_pcnt_filter;
const char *sym_filter;
const char *uid_str;
};
size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);

View file

@ -21,14 +21,13 @@
* The parts for function graph printing was taken and modified from the
* Linux Kernel that were written by Frederic Weisbecker.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#undef _GNU_SOURCE
#include "../perf.h"
#include "util.h"
#include "trace-event.h"

View file

@ -1,6 +1,4 @@
#define _GNU_SOURCE
#include <stdio.h>
#undef _GNU_SOURCE
#include "../libslang.h"
#include <stdlib.h>
#include <string.h>
@ -841,6 +839,9 @@ static int hists__browser_title(struct hists *self, char *bf, size_t size,
nr_events = convert_unit(nr_events, &unit);
printed = snprintf(bf, size, "Events: %lu%c %s", nr_events, unit, ev_name);
if (self->uid_filter_str)
printed += snprintf(bf + printed, size - printed,
", UID: %s", self->uid_filter_str);
if (thread)
printed += snprintf(bf + printed, size - printed,
", Thread: %s(%d)",

View file

@ -1,4 +1,3 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

View file

@ -7,6 +7,7 @@
* Copyright (C) Linus Torvalds, 2005
*/
#include "util.h"
#include "debug.h"
static void report(const char *prefix, const char *err, va_list params)
{
@ -81,3 +82,41 @@ void warning(const char *warn, ...)
warn_routine(warn, params);
va_end(params);
}
uid_t parse_target_uid(const char *str, pid_t tid, pid_t pid)
{
struct passwd pwd, *result;
char buf[1024];
if (str == NULL)
return UINT_MAX;
/* CPU and PID are mutually exclusive */
if (tid > 0 || pid > 0) {
ui__warning("PID/TID switch overriding UID\n");
sleep(1);
return UINT_MAX;
}
getpwnam_r(str, &pwd, buf, sizeof(buf), &result);
if (result == NULL) {
char *endptr;
int uid = strtol(str, &endptr, 10);
if (*endptr != '\0') {
ui__error("Invalid user %s\n", str);
return UINT_MAX - 1;
}
getpwuid_r(uid, &pwd, buf, sizeof(buf), &result);
if (result == NULL) {
ui__error("Problems obtaining information for user %s\n",
str);
return UINT_MAX - 1;
}
}
return result->pw_uid;
}

View file

@ -40,7 +40,6 @@
#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
#define _ALL_SOURCE 1
#define _GNU_SOURCE 1
#define _BSD_SOURCE 1
#define HAS_BOOL
@ -246,6 +245,8 @@ struct perf_event_attr;
void event_attr_init(struct perf_event_attr *attr);
uid_t parse_target_uid(const char *str, pid_t tid, pid_t pid);
#define _STR(x) #x
#define STR(x) _STR(x)