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| author | Chris Phlipot <cphlipot0@gmail.com> | 2016-05-11 05:26:46 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-05-11 17:24:57 +0200 |
| commit | ae93a6c70838b87151ac12589dc507dbf4f2f067 (patch) | |
| tree | 5cc36ec19cb956eecdc84087ffc14a43262c9c63 /tools/perf/util/symbol.h | |
| parent | perf scripting python: Use Py_FatalError instead of die() (diff) | |
| download | linux-ae93a6c70838b87151ac12589dc507dbf4f2f067.tar.xz linux-ae93a6c70838b87151ac12589dc507dbf4f2f067.zip | |
perf symbols: Add dso__insert_symbol function
The current method for inserting symbols is to use the symbols__insert()
function. However symbols__insert() does not update the dso symbol
cache. This causes problems in the following scenario:
1. symbol not found at addr using dso__find_symbol
2. symbol inserted at addr using the existing symbols__insert function
3. symbol still not found at addr using dso__find_symbol() because cache isn't
updated. This is undesired behavior.
The undesired behavior in (3) is addressed by creating a new function,
dso__insert_symbol() to both insert the symbol and update the symbol
cache if necessary.
If dso__insert_symbol() is used in (2) instead of symbols__insert(),
then the undesired behavior in (3) is avoided.
Signed-off-by: Chris Phlipot <cphlipot0@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1462937209-6032-2-git-send-email-cphlipot0@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol.h')
| -rw-r--r-- | tools/perf/util/symbol.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 07211c2f8456..2b5e4ed76fcb 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -246,6 +246,9 @@ int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map, int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map, symbol_filter_t filter); +void dso__insert_symbol(struct dso *dso, enum map_type type, + struct symbol *sym); + struct symbol *dso__find_symbol(struct dso *dso, enum map_type type, u64 addr); struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type, |