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52deff71bc
linux/tools
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David Ahern 52deff71bc perf script: Fix regression in callchain dso name 
$ perf script -i /tmp/perf.data
...
gcc 13623 544315.062858: context-switches:
    ffffffff815f65c9 __schedule ([kernel.kallsyms])
    ffffffff81087cea __cond_resched ([kernel.kallsyms])
    ffffffff815f6b92 _cond_resched ([kernel.kallsyms])
    ffffffff815fb87a do_page_fault ([kernel.kallsyms])
    ffffffff815f8465 page_fault ([kernel.kallsyms])
        2b7a71ea0303 _dl_lookup_symbol_x ([kernel.kallsyms])
        2b7a71ea1eb5 _dl_relocate_object ([kernel.kallsyms])
        2b7a71e99b2e dl_main ([kernel.kallsyms])
        2b7a71eab7f4 _dl_sysdep_start ([kernel.kallsyms])

All DSO's in a callchain are printed as [kernel.kallsyms].

git bisect chased it to:

547a92e0ae is the first bad commit
commit 547a92e0ae
Author: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Date:   Mon Jan 30 13:42:57 2012 +0900

    perf script: Unify the expressions indicating "unknown"

    The perf script command uses various expressions to indicate "unknown".

    It is unfriendly for user scripts to parse it. So, this patch unifies
    the expressions to "[unknown]".

Looks like a copy-paste in that the other references use al.map but this one
should be node->map.

With this patch you get:

$ perf script -i /tmp/perf.data
...
gcc 13623 544315.062858: context-switches:
    ffffffff815f65c9 __schedule ([kernel.kallsyms])
    ffffffff81087cea __cond_resched ([kernel.kallsyms])
    ffffffff815f6b92 _cond_resched ([kernel.kallsyms])
    ffffffff815fb87a do_page_fault ([kernel.kallsyms])
    ffffffff815f8465 page_fault ([kernel.kallsyms])
        2b7a71ea0303 _dl_lookup_symbol_x (/lib64/ld-2.14.90.so)
        2b7a71ea1eb5 _dl_relocate_object (/lib64/ld-2.14.90.so)
        2b7a71e99b2e dl_main (/lib64/ld-2.14.90.so)
        2b7a71eab7f4 _dl_sysdep_start (/lib64/ld-2.14.90.so)

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Akihiro Nagai <akihiro.nagai.hw@hitachi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1338353906-60706-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-05-30 14:24:38 -03:00
..
firewire
hv Tools: hv: Support enumeration from all the pools 2012-03-16 13:36:04 -07:00
include/tools tools/include: Add byteshift headers for endian access 2012-02-28 10:22:51 -08:00
lguest
lib/traceevent tools lib traceevent: Silence compiler warning on 32bit build 2012-05-26 14:14:58 -03:00
nfsd
perf perf script: Fix regression in callchain dso name 2012-05-30 14:24:38 -03:00
power sched: Remove stale power aware scheduling remnants and dysfunctional knobs 2012-05-17 13:48:56 +02:00
scripts perf: Build libtraceevent.a 2012-04-25 13:01:40 +02:00
testing ktest: Change singular "paranthesis" to plural "parentheses" 2012-05-23 10:19:09 -04:00
usb USB: testusb: add path /dev/bus/usb to default search paths for usbfs 2012-05-15 08:41:13 -07:00
virtio virtio/tools: add delayed interupt mode 2012-05-02 18:22:14 +03:00
vm tools/vm/page-types.c: cleanups 2012-05-29 16:22:21 -07:00
Makefile tools: Connect to the kernel build system 2012-04-11 15:00:17 -03:00