Commit 33ff581eddf744ea91a50d46c2f0961b375a9595
Committed by
Arnaldo Carvalho de Melo
Arnaldo Carvalho de Melo
1 parent
e7c72d888d
Exists in
smarc-l5.0.0_1.0.0-ga
and in
5 other branches
perf symbols: Read plt symbols from proper symtab_type binary
When loading symbols from DSO we check multiple paths of DSO binary
until we succeed to load symbols ('.symtab' section). Once symbols are
read we try to load also plt symbols.
During the reading of plt symbols, the dso file is reopened from
location given by dso->long_name. This could be wrong in case we want
process buildid binaries.
The change is to make the plt symbols being read from the DSO path, that
normal symbols were read from.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1334756818-6631-1-git-send-email-jolsa@redhat.com
[ committer note: moved dso to be the first parameter of that function ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Showing 1 changed file with 6 additions and 7 deletions Side-by-side Diff
tools/perf/util/symbol.c
| ... | ... | @@ -977,8 +977,9 @@ |
| 977 | 977 | * And always look at the original dso, not at debuginfo packages, that |
| 978 | 978 | * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). |
| 979 | 979 | */ |
| 980 | -static int dso__synthesize_plt_symbols(struct dso *dso, struct map *map, | |
| 981 | - symbol_filter_t filter) | |
| 980 | +static int | |
| 981 | +dso__synthesize_plt_symbols(struct dso *dso, char *name, struct map *map, | |
| 982 | + symbol_filter_t filter) | |
| 982 | 983 | { |
| 983 | 984 | uint32_t nr_rel_entries, idx; |
| 984 | 985 | GElf_Sym sym; |
| 985 | 986 | |
| ... | ... | @@ -993,10 +994,7 @@ |
| 993 | 994 | char sympltname[1024]; |
| 994 | 995 | Elf *elf; |
| 995 | 996 | int nr = 0, symidx, fd, err = 0; |
| 996 | - char name[PATH_MAX]; | |
| 997 | 997 | |
| 998 | - snprintf(name, sizeof(name), "%s%s", | |
| 999 | - symbol_conf.symfs, dso->long_name); | |
| 1000 | 998 | fd = open(name, O_RDONLY); |
| 1001 | 999 | if (fd < 0) |
| 1002 | 1000 | goto out; |
| ... | ... | @@ -1703,8 +1701,9 @@ |
| 1703 | 1701 | continue; |
| 1704 | 1702 | |
| 1705 | 1703 | if (ret > 0) { |
| 1706 | - int nr_plt = dso__synthesize_plt_symbols(dso, map, | |
| 1707 | - filter); | |
| 1704 | + int nr_plt; | |
| 1705 | + | |
| 1706 | + nr_plt = dso__synthesize_plt_symbols(dso, name, map, filter); | |
| 1708 | 1707 | if (nr_plt > 0) |
| 1709 | 1708 | ret += nr_plt; |
| 1710 | 1709 | break; |