linux/tools/perf
Arnaldo Carvalho de Melo cdcd1e6bd8 perf trace: Fix up fd -> pathname resolution
There was a brown paper bag bug in the patch that introduced a reference
implementation on using 'perf probe' made wannabe tracepoints that broke fd ->
pathname resolution, fix it:

  [root@zoo ~]# perf probe 'vfs_getname=getname_flags:65 pathname=result->name:string'
  Added new event:
    probe:vfs_getname    (on getname_flags:65 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

  [root@zoo ~]

Before:

  [acme@zoo linux]$ trace touch -e open,fstat /tmp/b
     1.159 ( 0.007 ms): open(filename: 0x7fd73f2fe088, flags: CLOEXEC                         ) = 3
     1.163 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fff1b25e610                                  ) = 0
     1.192 ( 0.009 ms): open(filename: 0x7fd73f4fedb8, flags: CLOEXEC                         ) = 3
     1.201 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fff1b25e660                                  ) = 0
     1.501 ( 0.013 ms): open(filename: 0x7fd73f0a1610, flags: CLOEXEC                         ) = 3
     1.505 ( 0.002 ms): fstat(fd: 3, statbuf: 0x7fd73f2ddb60                                  ) = 0
     1.581 ( 0.011 ms): open(filename: 0x7fff1b2603da, flags: CREAT|NOCTTY|NONBLOCK|WRONLY, mode: 438) = 3
  [acme@zoo linux]$

After:

  [acme@zoo linux]$ trace touch -e open,fstat,dup2,mmap,close /tmp/b
     1.105 ( 0.004 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fbf000
     1.136 ( 0.008 ms): open(filename: 0x7f8902dbc088, flags: CLOEXEC                         ) = 3
     1.140 ( 0.002 ms): fstat(fd: 3</etc/ld.so.cache>, statbuf: 0x7fff19889ef0                ) = 0
     1.146 ( 0.004 ms): mmap(len: 86079, prot: READ, flags: PRIVATE, fd: 3</etc/ld.so.cache>  ) = 0x2fa9000
     1.149 ( 0.001 ms): close(fd: 3</etc/ld.so.cache>                                         ) = 0
     1.170 ( 0.010 ms): open(filename: 0x7f8902fbcdb8, flags: CLOEXEC                         ) = 3
     1.178 ( 0.002 ms): fstat(fd: 3</lib64/libc.so.6>, statbuf: 0x7fff19889f40                ) = 0
     1.188 ( 0.006 ms): mmap(len: 3924576, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3</lib64/libc.so.6>) = 0x29e2000
     1.207 ( 0.007 ms): mmap(addr: 0x7f8902d96000, len: 24576, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3</lib64/libc.so.6>, off: 1785856) = 0x2d96000
     1.217 ( 0.004 ms): mmap(addr: 0x7f8902d9c000, len: 16992, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS|FIXED, fd: -1) = 0x2d9c000
     1.228 ( 0.002 ms): close(fd: 3</lib64/libc.so.6>                                         ) = 0
     1.243 ( 0.003 ms): mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fa8000
     1.250 ( 0.003 ms): mmap(len: 8192, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1    ) = 0x2fa6000
     1.452 ( 0.010 ms): open(filename: 0x7f8902b5f610, flags: CLOEXEC                         ) = 3
     1.455 ( 0.002 ms): fstat(fd: 3</usr/lib/locale/locale-archive>, statbuf: 0x7f8902d9bb60  ) = 0
     1.461 ( 0.004 ms): mmap(len: 106070960, prot: READ, flags: PRIVATE, fd: 3</usr/lib/locale/locale-archive>) = 0xfc4b9000
     1.469 ( 0.002 ms): close(fd: 3</usr/lib/locale/locale-archive>                           ) = 0
     1.528 ( 0.010 ms): open(filename: 0x7fff1988c3da, flags: CREAT|NOCTTY|NONBLOCK|WRONLY, mode: 438) = 3
     1.532 ( 0.002 ms): dup2(oldfd: 3</tmp/b>                                                 ) = 0
     1.535 ( 0.001 ms): close(fd: 3</tmp/b>                                                   ) = 0
     1.544 ( 0.001 ms): close(                                                                ) = 0
     1.555 ( 0.001 ms): close(fd: 1                                                           ) = 0
     1.558 ( 0.001 ms): close(fd: 2                                                           ) = 0
  [acme@zoo linux]$

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-vcm22xpjxc3j4hbyuzjzf7ik@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-06-19 16:13:11 -03:00
..
arch perf tools: Add libdw DWARF post unwind support for ARM 2014-05-16 11:39:29 +02:00
bench Merge branch 'perf-core-for-mingo' into perf/urgent 2014-04-14 16:45:39 +02:00
config perf tools: Emit more precise message for missing glibc static library 2014-06-09 12:14:08 -03:00
Documentation perf/core improvements: 2014-06-12 13:54:42 +02:00
python perf python: Remove duplicate TID bit from mask 2013-08-07 17:35:25 -03:00
scripts perf tools: Finish the removal of 'self' arguments 2013-11-05 15:32:36 -03:00
tests perf tests: Add test for closing dso objects on EMFILE error 2014-06-12 16:53:23 +02:00
ui perf tools: Move elide bool into perf_hpp_fmt struct 2014-06-03 21:34:59 +02:00
util perf tools: Add dso__data_* interface descriptons 2014-06-12 16:53:22 +02:00
.gitignore perf tools: Ignore 'perf timechart' output file 2013-10-11 12:17:37 -03:00
builtin-annotate.c perf hists: Check if accumulated when adding a hist entry 2014-06-01 14:34:56 +02:00
builtin-bench.c perf bench: Fix segfault at the end of an 'all' execution 2014-04-14 12:55:53 +02:00
builtin-buildid-cache.c perf buildid-cache: Check relocation when checking for existing kcore 2014-01-31 17:21:54 -03:00
builtin-buildid-list.c perf session: Separating data file properties from session 2013-10-21 17:33:25 -03:00
builtin-diff.c perf hists: Check if accumulated when adding a hist entry 2014-06-01 14:34:56 +02:00
builtin-evlist.c perf evlist: Introduce evlist__for_each() & friends 2014-01-13 10:06:25 -03:00
builtin-help.c perf help: Fix --help for builtins 2012-10-22 12:35:49 -02:00
builtin-inject.c perf tools: Fix pipe check regression in attr event callback 2014-06-09 12:20:34 +02:00
builtin-kmem.c perf tools: Use tid for finding thread 2014-05-12 11:09:50 +02:00
builtin-kvm.c perf kvm: Fix 'Min time' counting in report command 2014-04-20 00:14:08 +02:00
builtin-list.c perf list: Add usage 2013-11-05 14:26:41 -03:00
builtin-lock.c perf lock: Introduce --list-cmds for use by scripts 2014-04-16 17:16:04 +02:00
builtin-mem.c perf mem: Introduce --list-cmds for use by scripts 2014-04-16 17:16:04 +02:00
builtin-probe.c perf probe: Show error code and description in verbose mode 2014-06-09 14:34:09 -03:00
builtin-record.c perf/tool: Add conditional branch filter 'cond' to perf record 2014-06-05 12:30:19 +02:00
builtin-report.c perf tools: Add callback function to hist_entry_iter 2014-06-01 14:35:05 +02:00
builtin-sched.c perf tools: Introduce hists__inc_nr_samples() 2014-06-01 14:34:55 +02:00
builtin-script.c perf evlist: Introduce evlist__for_each() & friends 2014-01-13 10:06:25 -03:00
builtin-stat.c perf stat: Initialize statistics correctly 2014-04-14 12:56:06 +02:00
builtin-timechart.c perf symbols: Record the reason for filtering an address_location 2014-03-18 18:16:57 -03:00
builtin-top.c perf top: Add top.children config option 2014-06-01 14:35:07 +02:00
builtin-trace.c perf trace: Fix up fd -> pathname resolution 2014-06-19 16:13:11 -03:00
builtin.h perf tools: Add new mem command for memory access profiling 2013-04-01 12:21:44 -03:00
command-list.txt perf tools: Add new mem command for memory access profiling 2013-04-01 12:21:44 -03:00
CREDITS
design.txt perf tools: Update some code references in design.txt 2014-03-18 18:17:06 -03:00
Makefile perf tools: Add 'build-test' make target 2014-01-16 16:26:26 -03:00
Makefile.perf perf tools: Prettify the tags/TAGS/cscope targets output 2014-06-09 12:21:02 +02:00
MANIFEST tools: Consolidate types.h 2014-05-01 21:22:39 +02:00
perf-archive.sh perf archive: Make 'f' the last parameter for tar 2012-09-17 13:10:42 -03:00
perf-completion.sh perf sched: Introduce --list-cmds for use by scripts 2014-04-16 17:16:05 +02:00
perf-sys.h perf tools: Move sys_perf_event_open function from perf.h 2014-05-05 17:48:51 +02:00
perf.c perf tools: Add support to dynamically get cacheline size 2014-06-09 13:34:48 +02:00
perf.h perf tools: Move ACCESS_ONCE from perf.h header 2014-05-05 17:49:07 +02:00