talos-obmc-linux/tools/perf/trace, branch dev-4.13

perf tools: Add signal.h to places using its definitions

2017-04-20T16:22:43+00:00

And remove it from util.h, disentangling it a bit more. Link: http://lkml.kernel.org/n/tip-2zg9s5nx90yde64j3g4z2uhk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Beautify statx syscall 'flag' and 'mask' arguments

2017-03-31T17:42:31+00:00

To test it, build samples/statx/test_statx, which I did as: $ make headers_install $ cc -I ~/git/linux/usr/include samples/statx/test-statx.c -o /tmp/statx And then use perf trace on it: # perf trace -e statx /tmp/statx /etc/passwd statx(/etc/passwd) = 0 results=7ff Size: 3496 Blocks: 8 IO Block: 4096 regular file Device: fd:00 Inode: 280156 Links: 1 Access: (0644/-rw-r--r--) Uid: 0 Gid: 0 Access: 2017-03-29 16:01:01.650073438-0300 Modify: 2017-03-10 16:25:14.156479354-0300 Change: 2017-03-10 16:25:14.171479328-0300 0.000 ( 0.007 ms): statx/30648 statx(dfd: CWD, filename: 0x7ef503f4, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff7ef4eb10) = 0 # Using the test-stat.c options to change the mask: # perf trace -e statx /tmp/statx -O /etc/passwd > /dev/null 0.000 ( 0.008 ms): statx/30745 statx(dfd: CWD, filename: 0x3a0753f4, flags: SYMLINK_NOFOLLOW, mask: BTIME, buffer: 0x7ffd3a0735c0) = 0 # # perf trace -e statx /tmp/statx -A /etc/passwd > /dev/null 0.000 ( 0.010 ms): statx/30757 statx(dfd: CWD, filename: 0xa94e63f4, flags: SYMLINK_NOFOLLOW|NO_AUTOMOUNT, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffea94e49d0) = 0 # # trace --no-inherit -e statx /tmp/statx -F /etc/passwd > /dev/null 0.000 ( 0.011 ms): statx(dfd: CWD, filename: 0x3b02d3f3, flags: SYMLINK_NOFOLLOW|STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffd3b02c850) = 0 # # trace --no-inherit -e statx /tmp/statx -F -L /etc/passwd > /dev/null 0.000 ( 0.008 ms): statx(dfd: CWD, filename: 0x15cff3f3, flags: STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff15cfdda0) = 0 # # trace --no-inherit -e statx /tmp/statx -D -O /etc/passwd > /dev/null 0.000 ( 0.009 ms): statx(dfd: CWD, filename: 0xfa37f3f3, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffffa37da20) = 0 # Adding a probe to get the filename collected as well: # perf probe 'vfs_getname=getname_flags:72 pathname=result->name:string' Added new event: probe:vfs_getname (on getname_flags:72 with pathname=result->name:string) You can now use it in all perf tools, such as: perf record -e probe:vfs_getname -aR sleep 1 # trace --no-inherit -e statx /tmp/statx -D -O /etc/passwd > /dev/null 0.169 ( 0.007 ms): statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0 # Same technique could be used to collect and beautify the result put in the 'buffer' argument. Finally do a system wide 'perf trace' session looking for any use of statx, then run the test proggie with various flags: # trace -e statx 16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0 33064.447 ( 0.011 ms): statx/4569 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW|STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffc5484c790) = 0 36050.891 ( 0.023 ms): statx/4576 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: BTIME, buffer: 0x7ffeb18b66e0) = 0 38039.889 ( 0.023 ms): statx/4584 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff1db0ea90) = 0 ^C# This one also starts moving the beautifiers from files directly included in builtin-trace.c to separate objects + a beauty.h header with prototypes, so that we can add test cases in tools/perf/tests/ to fire syscalls with various arguments and then get them intercepted as syscalls:sys_enter_foo or raw_syscalls:sys_enter + sys_exit to then format and check that the formatted output is the one we expect. Cc: Adrian Hunter Cc: Al Viro Cc: David Ahern Cc: David Howells Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-xvzw8eynffvez5czyzidhrno@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace: Check if MAP_32BIT is defined (again)

2016-12-20T12:37:40+00:00

There might be systems where MAP_32BIT is not defined, like some some RHEL7 powerpc versions. Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Kyle McMartin Cc: Namhyung Kim Cc: Peter Zijlstra Fixes: 256763b01741 ("perf trace beauty mmap: Add more conditional defines") Link: http://lkml.kernel.org/r/1481831814-23683-1-git-send-email-jolsa@kernel.org [ Changed the Fixme cset to the one removing the conditional switch case for MAP_32BIT ] Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty mmap: Add missing MADV_FREE

2016-09-19T14:25:07+00:00

tools/perf/trace/beauty/mmap.c forgets to check MADV_FREE. This patch fixes it. Signed-off-by: Wang Nan Cc: Naveen N. Rao Cc: Zefan Li Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1473850649-83389-2-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty mmap: Fix defines for non !x86_64

2016-09-13T18:26:29+00:00

Several defines have different values in different arches, so we can't just define it to the x86_64 value, use uapi/linux/mmap.h that was recently introduced to reliably find those, not using possibly outdated libc headers. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Cc: Zefan Li Link: http://lkml.kernel.org/n/tip-4eajp5yp8i2fuw44n7jmcg5t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty seccomp: Remove seccomp.h include

2016-07-12T18:20:38+00:00

All we need from it is already conditionally defined, and this header file is not present in older systems, so ditch it. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-3jxpz9gwahk4e7ltqtnr1rjg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty futex_op: Add missing defines for older systems

2016-07-12T18:20:37+00:00

Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-6qkuhv2mrcxmpy5sasc3c9tf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty open_flags: Add more conditional defines

2016-07-12T03:00:39+00:00

Don't handle some flags only if they have its defines in headers at time of building, define what is missing. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-wgjxeidwpowrvqgrxr080k6u@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty flock: Add more conditional defines

2016-07-12T03:00:39+00:00

Don't handle some flags only if they have its defines in headers at time of building, define what is missing. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-pgoxanv1y6hfcnryxawzuskl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf trace beauty mmap: Add more conditional defines

2016-07-12T03:00:39+00:00

Don't handle some flags only if they have its defines in headers at time of building, define what is missing. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-czbmxb01xzcl3h2qxuzoqkj5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo