linux/tools/perf
Namhyung Kim 0a7e6d1b68 perf tools: Check recorded kernel version when finding vmlinux
Currently vmlinux_path__init() only tries to find vmlinux file from
current directory, /boot and some canonical directories with version
number of the running kernel.  This can be a problem when reporting old
data recorded on a kernel version not running currently.

We can use --symfs option for this but it's annoying for user to do it
always.  As we already have the info in the perf.data file, it can be
changed to use it for the search automatically.

Before:

  $ perf report
  ...
  # Samples: 4K of event 'cpu-clock'
  # Event count (approx.): 1067250000
  #
  # Overhead  Command     Shared Object      Symbol
  # ........  ..........  .................  ..............................
      71.87%     swapper  [kernel.kallsyms]  [k] recover_probed_instruction

After:

  # Overhead  Command     Shared Object      Symbol
  # ........  ..........  .................  ....................
      71.87%     swapper  [kernel.kallsyms]  [k] native_safe_halt

This requires to change signature of symbol__init() to receive struct
perf_session_env *.

Reported-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1407825645-24586-14-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-08-13 16:42:21 -03:00
..
arch perf tools: Fix arm64 build error 2014-07-30 12:37:55 -03:00
bench perf tools: Enable close-on-exec flag on perf file descriptor 2014-07-18 09:09:34 +02:00
config perf tools: Default to python version 2 2014-08-12 12:03:08 -03:00
Documentation perf top: Add -w option for setting column width 2014-08-12 12:03:06 -03:00
python perf python: Remove duplicate TID bit from mask 2013-08-07 17:35:25 -03:00
scripts perf script: Add callchain to generic and tracepoint events 2014-07-16 17:57:33 -03:00
tests perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
ui perf tools: Fix column alignment when headers aren't shown on TUI 2014-08-12 12:03:07 -03:00
util perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
.gitignore perf tools: Ignore 'perf timechart' output file 2013-10-11 12:17:37 -03:00
builtin-annotate.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-bench.c perf bench: Add --repeat option 2014-06-19 16:13:15 -03:00
builtin-buildid-cache.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -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 tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-evlist.c perf tools: Move pr_* debug macros into debug object 2014-07-17 12:58:39 -03:00
builtin-help.c perf tools: Move pr_* debug macros into debug object 2014-07-17 12:58:39 -03:00
builtin-inject.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-kmem.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-kvm.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-list.c perf list: Add usage 2013-11-05 14:26:41 -03:00
builtin-lock.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-mem.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
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 tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-report.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-sched.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-script.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-stat.c perf tools: Fix wrong condition for allocation failure 2014-06-27 11:14:54 +02:00
builtin-timechart.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-top.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -03:00
builtin-trace.c perf tools: Check recorded kernel version when finding vmlinux 2014-08-13 16:42:21 -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: Create ordered-events object 2014-08-12 12:02:58 -03:00
MANIFEST perf kvm: Add stat support on s390 2014-07-16 17:57:33 -03:00
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: Allow to use cpuinfo on s390 2014-07-07 16:55:24 -03:00
perf.c perf tools: Fix perf usage string leftover 2014-07-28 15:58:13 +02:00
perf.h perf tools: Move ACCESS_ONCE from perf.h header 2014-05-05 17:49:07 +02:00