Commit 11737ca9 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-4.17-20180216' of... 

Merge tag 'perf-core-for-mingo-4.17-20180216' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

- Fix wrong jump arrow in systems with branch records with cycles,
  i.e. Intel's >= Skylake (Jin Yao)

- Fix 'perf record --per-thread' problem introduced when
  implementing 'perf stat --per-thread (Jin Yao)

- Use arch__compare_symbol_names() to fix 'perf test vmlinux',
  that was using strcmp(symbol names) while the dso routines
  doing symbol lookups used the arch overridable one, making
  this test fail in architectures that overrided that function
  with something other than strcmp() (Jiri Olsa)

- Add 'perf script --show-round-event' to display
  PERF_RECORD_FINISHED_ROUND entries (Jiri Olsa)

- Fix dwarf unwind for stripped binaries in 'perf test' (Jiri Olsa)

- Use ordered_events for 'perf report --tasks', otherwise we may get
  artifacts when PERF_RECORD_FORK gets processed before PERF_RECORD_COMM
  (when they got recorded in different CPUs) (Jiri Olsa)

- Add support to display group output for non group events, i.e.
  now when one uses 'perf report --group' on a perf.data file
  recorded without explicitly grouping events with {} (e.g.
  "perf record -e '{cycles,instructions}'" get the same output
  that would produce, i.e. see all those non-grouped events in
  multiple columns, at the same time (Jiri Olsa)

- Skip non-address kallsyms entries, e.g. '(null)' for !root (Jiri Olsa)

- Kernel maps fixes wrt perf.data(report) versus live system (top)
  (Jiri Olsa)

- Fix memory corruption when using 'perf record -j call -g -a <application>'
  followed by 'perf report --branch-history' (Jiri Olsa)

- ARM CoreSight fixes (Mathieu Poirier)

- Add inject capability for CoreSight Traces (Robert Waker)

- Update documentation for use of 'perf' + ARM CoreSight (Robert Walker)

- Man pages fixes (Sangwon Hong, Jaecheol Shin)

- Fix some 'perf test' cases on s/390 and x86_64 (some backtraces
  changed with a glibc update) (Thomas Richter)

- Add detailed CPUID info in the 'perf.data' headers for s/390 to
  then use it in 'perf annotate' (Thomas Richter)

- Add '--interval-count N' to 'perf stat', to use with -I, i.e.
  'perf stat -I 1000 --interval-count 2' will show stats every
   1000ms, two times (yuzhoujian)

- Add 'perf stat --timeout Nms', that will run for that many
  milliseconds and then stop, printing the counters (yuzhoujian)

- Fix description for 'perf report --mem-modex (Andi Kleen)

- Use a wildcard to remove the vfs_getname probe in the
  'perf test' shell based test cases (Arnaldo Carvalho de Melo)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 7057bb97 21316ac6

Documentation/trace/coresight.txt

+51 −0
Original line number Diff line number Diff line
@@ -330,3 +330,54 @@ Details on how to use the generic STM API can be found here [2]. 


[1]. Documentation/ABI/testing/sysfs-bus-coresight-devices-stm

[2]. Documentation/trace/stm.txt





Using perf tools

----------------



perf can be used to record and analyze trace of programs.



Execution can be recorded using 'perf record' with the cs_etm event,

specifying the name of the sink to record to, e.g:



    perf record -e cs_etm/@20070000.etr/u --per-thread



The 'perf report' and 'perf script' commands can be used to analyze execution,

synthesizing instruction and branch events from the instruction trace.

'perf inject' can be used to replace the trace data with the synthesized events.

The --itrace option controls the type and frequency of synthesized events

(see perf documentation).



Note that only 64-bit programs are currently supported - further work is

required to support instruction decode of 32-bit Arm programs.





Generating coverage files for Feedback Directed Optimization: AutoFDO

---------------------------------------------------------------------



'perf inject' accepts the --itrace option in which case tracing data is

removed and replaced with the synthesized events. e.g.



	perf inject --itrace --strip -i perf.data -o perf.data.new



Below is an example of using ARM ETM for autoFDO.  It requires autofdo

(https://github.com/google/autofdo) and gcc version 5.  The bubble

sort example is from the AutoFDO tutorial (https://gcc.gnu.org/wiki/AutoFDO/Tutorial).



	$ gcc-5 -O3 sort.c -o sort

	$ taskset -c 2 ./sort

	Bubble sorting array of 30000 elements

	5910 ms



	$ perf record -e cs_etm/@20070000.etr/u --per-thread taskset -c 2 ./sort

	Bubble sorting array of 30000 elements

	12543 ms

	[ perf record: Woken up 35 times to write data ]

	[ perf record: Captured and wrote 69.640 MB perf.data ]



	$ perf inject -i perf.data -o inj.data --itrace=il64 --strip

	$ create_gcov --binary=./sort --profile=inj.data --gcov=sort.gcov -gcov_version=1

	$ gcc-5 -O3 -fauto-profile=sort.gcov sort.c -o sort_autofdo

	$ taskset -c 2 ./sort_autofdo

	Bubble sorting array of 30000 elements

	5806 ms

tools/arch/powerpc/include/uapi/asm/unistd.h

0 → 100644
+402 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

/*

 * This file contains the system call numbers.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#ifndef _UAPI_ASM_POWERPC_UNISTD_H_

#define _UAPI_ASM_POWERPC_UNISTD_H_





#define __NR_restart_syscall	  0

#define __NR_exit		  1

#define __NR_fork		  2

#define __NR_read		  3

#define __NR_write		  4

#define __NR_open		  5

#define __NR_close		  6

#define __NR_waitpid		  7

#define __NR_creat		  8

#define __NR_link		  9

#define __NR_unlink		 10

#define __NR_execve		 11

#define __NR_chdir		 12

#define __NR_time		 13

#define __NR_mknod		 14

#define __NR_chmod		 15

#define __NR_lchown		 16

#define __NR_break		 17

#define __NR_oldstat		 18

#define __NR_lseek		 19

#define __NR_getpid		 20

#define __NR_mount		 21

#define __NR_umount		 22

#define __NR_setuid		 23

#define __NR_getuid		 24

#define __NR_stime		 25

#define __NR_ptrace		 26

#define __NR_alarm		 27

#define __NR_oldfstat		 28

#define __NR_pause		 29

#define __NR_utime		 30

#define __NR_stty		 31

#define __NR_gtty		 32

#define __NR_access		 33

#define __NR_nice		 34

#define __NR_ftime		 35

#define __NR_sync		 36

#define __NR_kill		 37

#define __NR_rename		 38

#define __NR_mkdir		 39

#define __NR_rmdir		 40

#define __NR_dup		 41

#define __NR_pipe		 42

#define __NR_times		 43

#define __NR_prof		 44

#define __NR_brk		 45

#define __NR_setgid		 46

#define __NR_getgid		 47

#define __NR_signal		 48

#define __NR_geteuid		 49

#define __NR_getegid		 50

#define __NR_acct		 51

#define __NR_umount2		 52

#define __NR_lock		 53

#define __NR_ioctl		 54

#define __NR_fcntl		 55

#define __NR_mpx		 56

#define __NR_setpgid		 57

#define __NR_ulimit		 58

#define __NR_oldolduname	 59

#define __NR_umask		 60

#define __NR_chroot		 61

#define __NR_ustat		 62

#define __NR_dup2		 63

#define __NR_getppid		 64

#define __NR_getpgrp		 65

#define __NR_setsid		 66

#define __NR_sigaction		 67

#define __NR_sgetmask		 68

#define __NR_ssetmask		 69

#define __NR_setreuid		 70

#define __NR_setregid		 71

#define __NR_sigsuspend		 72

#define __NR_sigpending		 73

#define __NR_sethostname	 74

#define __NR_setrlimit		 75

#define __NR_getrlimit		 76

#define __NR_getrusage		 77

#define __NR_gettimeofday	 78

#define __NR_settimeofday	 79

#define __NR_getgroups		 80

#define __NR_setgroups		 81

#define __NR_select		 82

#define __NR_symlink		 83

#define __NR_oldlstat		 84

#define __NR_readlink		 85

#define __NR_uselib		 86

#define __NR_swapon		 87

#define __NR_reboot		 88

#define __NR_readdir		 89

#define __NR_mmap		 90

#define __NR_munmap		 91

#define __NR_truncate		 92

#define __NR_ftruncate		 93

#define __NR_fchmod		 94

#define __NR_fchown		 95

#define __NR_getpriority	 96

#define __NR_setpriority	 97

#define __NR_profil		 98

#define __NR_statfs		 99

#define __NR_fstatfs		100

#define __NR_ioperm		101

#define __NR_socketcall		102

#define __NR_syslog		103

#define __NR_setitimer		104

#define __NR_getitimer		105

#define __NR_stat		106

#define __NR_lstat		107

#define __NR_fstat		108

#define __NR_olduname		109

#define __NR_iopl		110

#define __NR_vhangup		111

#define __NR_idle		112

#define __NR_vm86		113

#define __NR_wait4		114

#define __NR_swapoff		115

#define __NR_sysinfo		116

#define __NR_ipc		117

#define __NR_fsync		118

#define __NR_sigreturn		119

#define __NR_clone		120

#define __NR_setdomainname	121

#define __NR_uname		122

#define __NR_modify_ldt		123

#define __NR_adjtimex		124

#define __NR_mprotect		125

#define __NR_sigprocmask	126

#define __NR_create_module	127

#define __NR_init_module	128

#define __NR_delete_module	129

#define __NR_get_kernel_syms	130

#define __NR_quotactl		131

#define __NR_getpgid		132

#define __NR_fchdir		133

#define __NR_bdflush		134

#define __NR_sysfs		135

#define __NR_personality	136

#define __NR_afs_syscall	137 /* Syscall for Andrew File System */

#define __NR_setfsuid		138

#define __NR_setfsgid		139

#define __NR__llseek		140

#define __NR_getdents		141

#define __NR__newselect		142

#define __NR_flock		143

#define __NR_msync		144

#define __NR_readv		145

#define __NR_writev		146

#define __NR_getsid		147

#define __NR_fdatasync		148

#define __NR__sysctl		149

#define __NR_mlock		150

#define __NR_munlock		151

#define __NR_mlockall		152

#define __NR_munlockall		153

#define __NR_sched_setparam		154

#define __NR_sched_getparam		155

#define __NR_sched_setscheduler		156

#define __NR_sched_getscheduler		157

#define __NR_sched_yield		158

#define __NR_sched_get_priority_max	159

#define __NR_sched_get_priority_min	160

#define __NR_sched_rr_get_interval	161

#define __NR_nanosleep		162

#define __NR_mremap		163

#define __NR_setresuid		164

#define __NR_getresuid		165

#define __NR_query_module	166

#define __NR_poll		167

#define __NR_nfsservctl		168

#define __NR_setresgid		169

#define __NR_getresgid		170

#define __NR_prctl		171

#define __NR_rt_sigreturn	172

#define __NR_rt_sigaction	173

#define __NR_rt_sigprocmask	174

#define __NR_rt_sigpending	175

#define __NR_rt_sigtimedwait	176

#define __NR_rt_sigqueueinfo	177

#define __NR_rt_sigsuspend	178

#define __NR_pread64		179

#define __NR_pwrite64		180

#define __NR_chown		181

#define __NR_getcwd		182

#define __NR_capget		183

#define __NR_capset		184

#define __NR_sigaltstack	185

#define __NR_sendfile		186

#define __NR_getpmsg		187	/* some people actually want streams */

#define __NR_putpmsg		188	/* some people actually want streams */

#define __NR_vfork		189

#define __NR_ugetrlimit		190	/* SuS compliant getrlimit */

#define __NR_readahead		191

#ifndef __powerpc64__			/* these are 32-bit only */

#define __NR_mmap2		192

#define __NR_truncate64		193

#define __NR_ftruncate64	194

#define __NR_stat64		195

#define __NR_lstat64		196

#define __NR_fstat64		197

#endif

#define __NR_pciconfig_read	198

#define __NR_pciconfig_write	199

#define __NR_pciconfig_iobase	200

#define __NR_multiplexer	201

#define __NR_getdents64		202

#define __NR_pivot_root		203

#ifndef __powerpc64__

#define __NR_fcntl64		204

#endif

#define __NR_madvise		205

#define __NR_mincore		206

#define __NR_gettid		207

#define __NR_tkill		208

#define __NR_setxattr		209

#define __NR_lsetxattr		210

#define __NR_fsetxattr		211

#define __NR_getxattr		212

#define __NR_lgetxattr		213

#define __NR_fgetxattr		214

#define __NR_listxattr		215

#define __NR_llistxattr		216

#define __NR_flistxattr		217

#define __NR_removexattr	218

#define __NR_lremovexattr	219

#define __NR_fremovexattr	220

#define __NR_futex		221

#define __NR_sched_setaffinity	222

#define __NR_sched_getaffinity	223

/* 224 currently unused */

#define __NR_tuxcall		225

#ifndef __powerpc64__

#define __NR_sendfile64		226

#endif

#define __NR_io_setup		227

#define __NR_io_destroy		228

#define __NR_io_getevents	229

#define __NR_io_submit		230

#define __NR_io_cancel		231

#define __NR_set_tid_address	232

#define __NR_fadvise64		233

#define __NR_exit_group		234

#define __NR_lookup_dcookie	235

#define __NR_epoll_create	236

#define __NR_epoll_ctl		237

#define __NR_epoll_wait		238

#define __NR_remap_file_pages	239

#define __NR_timer_create	240

#define __NR_timer_settime	241

#define __NR_timer_gettime	242

#define __NR_timer_getoverrun	243

#define __NR_timer_delete	244

#define __NR_clock_settime	245

#define __NR_clock_gettime	246

#define __NR_clock_getres	247

#define __NR_clock_nanosleep	248

#define __NR_swapcontext	249

#define __NR_tgkill		250

#define __NR_utimes		251

#define __NR_statfs64		252

#define __NR_fstatfs64		253

#ifndef __powerpc64__

#define __NR_fadvise64_64	254

#endif

#define __NR_rtas		255

#define __NR_sys_debug_setcontext 256

/* Number 257 is reserved for vserver */

#define __NR_migrate_pages	258

#define __NR_mbind		259

#define __NR_get_mempolicy	260

#define __NR_set_mempolicy	261

#define __NR_mq_open		262

#define __NR_mq_unlink		263

#define __NR_mq_timedsend	264

#define __NR_mq_timedreceive	265

#define __NR_mq_notify		266

#define __NR_mq_getsetattr	267

#define __NR_kexec_load		268

#define __NR_add_key		269

#define __NR_request_key	270

#define __NR_keyctl		271

#define __NR_waitid		272

#define __NR_ioprio_set		273

#define __NR_ioprio_get		274

#define __NR_inotify_init	275

#define __NR_inotify_add_watch	276

#define __NR_inotify_rm_watch	277

#define __NR_spu_run		278

#define __NR_spu_create		279

#define __NR_pselect6		280

#define __NR_ppoll		281

#define __NR_unshare		282

#define __NR_splice		283

#define __NR_tee		284

#define __NR_vmsplice		285

#define __NR_openat		286

#define __NR_mkdirat		287

#define __NR_mknodat		288

#define __NR_fchownat		289

#define __NR_futimesat		290

#ifdef __powerpc64__

#define __NR_newfstatat		291

#else

#define __NR_fstatat64		291

#endif

#define __NR_unlinkat		292

#define __NR_renameat		293

#define __NR_linkat		294

#define __NR_symlinkat		295

#define __NR_readlinkat		296

#define __NR_fchmodat		297

#define __NR_faccessat		298

#define __NR_get_robust_list	299

#define __NR_set_robust_list	300

#define __NR_move_pages		301

#define __NR_getcpu		302

#define __NR_epoll_pwait	303

#define __NR_utimensat		304

#define __NR_signalfd		305

#define __NR_timerfd_create	306

#define __NR_eventfd		307

#define __NR_sync_file_range2	308

#define __NR_fallocate		309

#define __NR_subpage_prot	310

#define __NR_timerfd_settime	311

#define __NR_timerfd_gettime	312

#define __NR_signalfd4		313

#define __NR_eventfd2		314

#define __NR_epoll_create1	315

#define __NR_dup3		316

#define __NR_pipe2		317

#define __NR_inotify_init1	318

#define __NR_perf_event_open	319

#define __NR_preadv		320

#define __NR_pwritev		321

#define __NR_rt_tgsigqueueinfo	322

#define __NR_fanotify_init	323

#define __NR_fanotify_mark	324

#define __NR_prlimit64		325

#define __NR_socket		326

#define __NR_bind		327

#define __NR_connect		328

#define __NR_listen		329

#define __NR_accept		330

#define __NR_getsockname	331

#define __NR_getpeername	332

#define __NR_socketpair		333

#define __NR_send		334

#define __NR_sendto		335

#define __NR_recv		336

#define __NR_recvfrom		337

#define __NR_shutdown		338

#define __NR_setsockopt		339

#define __NR_getsockopt		340

#define __NR_sendmsg		341

#define __NR_recvmsg		342

#define __NR_recvmmsg		343

#define __NR_accept4		344

#define __NR_name_to_handle_at	345

#define __NR_open_by_handle_at	346

#define __NR_clock_adjtime	347

#define __NR_syncfs		348

#define __NR_sendmmsg		349

#define __NR_setns		350

#define __NR_process_vm_readv	351

#define __NR_process_vm_writev	352

#define __NR_finit_module	353

#define __NR_kcmp		354

#define __NR_sched_setattr	355

#define __NR_sched_getattr	356

#define __NR_renameat2		357

#define __NR_seccomp		358

#define __NR_getrandom		359

#define __NR_memfd_create	360

#define __NR_bpf		361

#define __NR_execveat		362

#define __NR_switch_endian	363

#define __NR_userfaultfd	364

#define __NR_membarrier		365

#define __NR_mlock2		378

#define __NR_copy_file_range	379

#define __NR_preadv2		380

#define __NR_pwritev2		381

#define __NR_kexec_file_load	382

#define __NR_statx		383

#define __NR_pkey_alloc		384

#define __NR_pkey_free		385

#define __NR_pkey_mprotect	386



#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */

tools/lib/api/fs/fs.c

+35 −9
Original line number Diff line number Diff line
@@ -315,12 +315,8 @@ int filename__read_int(const char *filename, int *value) 
	return err;

}



/*

 * Parses @value out of @filename with strtoull.

 * By using 0 for base, the strtoull detects the

 * base automatically (see man strtoull).

 */

int filename__read_ull(const char *filename, unsigned long long *value)

static int filename__read_ull_base(const char *filename,

				   unsigned long long *value, int base)

{

	char line[64];

	int fd = open(filename, O_RDONLY), err = -1;
@@ -329,7 +325,7 @@ int filename__read_ull(const char *filename, unsigned long long *value) 
		return -1;



	if (read(fd, line, sizeof(line)) > 0) {

		*value = strtoull(line, NULL, 0);

		*value = strtoull(line, NULL, base);

		if (*value != ULLONG_MAX)

			err = 0;

	}
@@ -338,6 +334,25 @@ int filename__read_ull(const char *filename, unsigned long long *value) 
	return err;

}



/*

 * Parses @value out of @filename with strtoull.

 * By using 16 for base to treat the number as hex.

 */

int filename__read_xll(const char *filename, unsigned long long *value)

{

	return filename__read_ull_base(filename, value, 16);

}



/*

 * Parses @value out of @filename with strtoull.

 * By using 0 for base, the strtoull detects the

 * base automatically (see man strtoull).

 */

int filename__read_ull(const char *filename, unsigned long long *value)

{

	return filename__read_ull_base(filename, value, 0);

}



#define STRERR_BUFSIZE  128     /* For the buffer size of strerror_r */



int filename__read_str(const char *filename, char **buf, size_t *sizep)
@@ -417,7 +432,8 @@ int procfs__read_str(const char *entry, char **buf, size_t *sizep) 
	return filename__read_str(path, buf, sizep);

}



int sysfs__read_ull(const char *entry, unsigned long long *value)

static int sysfs__read_ull_base(const char *entry,

				unsigned long long *value, int base)

{

	char path[PATH_MAX];

	const char *sysfs = sysfs__mountpoint();
@@ -427,7 +443,17 @@ int sysfs__read_ull(const char *entry, unsigned long long *value) 


	snprintf(path, sizeof(path), "%s/%s", sysfs, entry);



	return filename__read_ull(path, value);

	return filename__read_ull_base(path, value, base);

}



int sysfs__read_xll(const char *entry, unsigned long long *value)

{

	return sysfs__read_ull_base(entry, value, 16);

}



int sysfs__read_ull(const char *entry, unsigned long long *value)

{

	return sysfs__read_ull_base(entry, value, 0);

}



int sysfs__read_int(const char *entry, int *value)

tools/lib/api/fs/fs.h

+2 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ FS(bpf_fs) 


int filename__read_int(const char *filename, int *value);

int filename__read_ull(const char *filename, unsigned long long *value);

int filename__read_xll(const char *filename, unsigned long long *value);

int filename__read_str(const char *filename, char **buf, size_t *sizep);



int filename__write_int(const char *filename, int value);
@@ -39,6 +40,7 @@ int procfs__read_str(const char *entry, char **buf, size_t *sizep); 
int sysctl__read_int(const char *sysctl, int *value);

int sysfs__read_int(const char *entry, int *value);

int sysfs__read_ull(const char *entry, unsigned long long *value);

int sysfs__read_xll(const char *entry, unsigned long long *value);

int sysfs__read_str(const char *entry, char **buf, size_t *sizep);

int sysfs__read_bool(const char *entry, bool *value);

tools/lib/symbol/kallsyms.c

+4 −0
Original line number Diff line number Diff line
@@ -38,6 +38,10 @@ int kallsyms__parse(const char *filename, void *arg, 


		len = hex2u64(line, &start);



		/* Skip the line if we failed to parse the address. */

		if (!len)

			continue;



		len++;

		if (len + 2 >= line_len)

			continue;

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