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perf unwind: Use addr_location::addr instead of ip for entries

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This fixes the srcline translation for call chains of user space
applications.

Before we got:

    perf report --stdio --no-children -s sym,srcline -g address
     8.92%  [.] main                                 mandelbrot.h:41
            |
            |--3.70%--main +8390240
            |          __libc_start_main +139950056726769
            |          _start +8388650
            |
            |--2.74%--main +8390189
            |
             --2.08%--main +8390296
                       __libc_start_main +139950056726769
                       _start +8388650

     7.59%  [.] main                                 complex:1326
            |
            |--4.79%--main +8390203
            |          __libc_start_main +139950056726769
            |          _start +8388650
            |
             --2.80%--main +8390219

     7.12%  [.] __muldc3                             libgcc2.c:1945
            |
            |--3.76%--__muldc3 +139950060519490
            |          main +8390224
            |          __libc_start_main +139950056726769
            |          _start +8388650
            |
             --3.32%--__muldc3 +139950060519512
                       main +8390224

With this patch applied, we instead get:

    perf report --stdio --no-children -s sym,srcline -g address
     8.92%  [.] main                                 mandelbrot.h:41
            |
            |--3.70%--main mandelbrot.h:41
            |          __libc_start_main +241
            |          _start +4194346
            |
            |--2.74%--main mandelbrot.h:41
            |
             --2.08%--main mandelbrot.h:41
                       __libc_start_main +241
                       _start +4194346

     7.59%  [.] main                                 complex:1326
            |
            |--4.79%--main complex:1326
            |          __libc_start_main +241
            |          _start +4194346
            |
             --2.80%--main complex:1326

     7.12%  [.] __muldc3                             libgcc2.c:1945
            |
            |--3.76%--__muldc3 libgcc2.c:1945
            |          main mandelbrot.h:39
            |          __libc_start_main +241
            |          _start +4194346
            |
             --3.32%--__muldc3 libgcc2.c:1945
                       main mandelbrot.h:39

Suggested-and-Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPU-Reference: 20160816153926.11288-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Milian Wolff 2016-08-16 17:39:26 +02:00 committed by Arnaldo Carvalho de Melo
parent 3cace81ea5
commit 6754075915
2 changed files with 2 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
tools/perf/util/unwind-libdw.c
View file

@ -66,7 +66,7 @@ static int entry(u64 ip, struct unwind_info *ui)
if (__report_module(&al, ip, ui))
return -1;
e->ip = ip;
e->ip = al.addr;
e->map = al.map;
e->sym = al.sym;

2
tools/perf/util/unwind-libunwind-local.c
View file

@ -542,7 +542,7 @@ static int entry(u64 ip, struct thread *thread,
thread__find_addr_location(thread, PERF_RECORD_MISC_USER,
MAP__FUNCTION, ip, &al);
e.ip = ip;
e.ip = al.addr;
e.map = al.map;
e.sym = al.sym;