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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-08-05 12:59:47 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-08-05 19:38:01 -0300 |
commit | c408fedfc4a1fa16e611ffd6f3280301b38614be (patch) | |
tree | 5beaf2fe188dc724e0a494d49b389ef83a61720a /tools/perf | |
parent | fc9ea5a1e53ee54f681e226d735008e2a6f8f470 (diff) | |
download | linux-stable-c408fedfc4a1fa16e611ffd6f3280301b38614be.tar.gz linux-stable-c408fedfc4a1fa16e611ffd6f3280301b38614be.tar.bz2 linux-stable-c408fedfc4a1fa16e611ffd6f3280301b38614be.zip |
perf symbols: Store the symbol binding
So that tools that wan't to act only on a subset of (weak, global,
local) symbols can do so, such as the upcoming uprobes support in 'perf
probe'.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/util/symbol.c | 30 | ||||
-rw-r--r-- | tools/perf/util/symbol.h | 1 |
2 files changed, 23 insertions, 8 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 6f0dd90c36ce..b6f5970f9106 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -131,7 +131,8 @@ static void map_groups__fixup_end(struct map_groups *self) __map_groups__fixup_end(self, i); } -static struct symbol *symbol__new(u64 start, u64 len, const char *name) +static struct symbol *symbol__new(u64 start, u64 len, u8 binding, + const char *name) { size_t namelen = strlen(name) + 1; struct symbol *self = calloc(1, (symbol_conf.priv_size + @@ -144,6 +145,7 @@ static struct symbol *symbol__new(u64 start, u64 len, const char *name) self->start = start; self->end = len ? start + len - 1 : start; + self->binding = binding; self->namelen = namelen - 1; pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); @@ -160,8 +162,11 @@ void symbol__delete(struct symbol *self) static size_t symbol__fprintf(struct symbol *self, FILE *fp) { - return fprintf(fp, " %llx-%llx %s\n", - self->start, self->end, self->name); + return fprintf(fp, " %llx-%llx %c %s\n", + self->start, self->end, + self->binding == STB_GLOBAL ? 'g' : + self->binding == STB_LOCAL ? 'l' : 'w', + self->name); } void dso__set_long_name(struct dso *self, char *name) @@ -453,6 +458,14 @@ struct process_kallsyms_args { struct dso *dso; }; +static u8 kallsyms2elf_type(char type) +{ + if (type == 'W') + return STB_WEAK; + + return isupper(type) ? STB_GLOBAL : STB_LOCAL; +} + static int map__process_kallsym_symbol(void *arg, const char *name, char type, u64 start) { @@ -466,7 +479,7 @@ static int map__process_kallsym_symbol(void *arg, const char *name, /* * Will fix up the end later, when we have all symbols sorted. */ - sym = symbol__new(start, 0, name); + sym = symbol__new(start, 0, kallsyms2elf_type(type), name); if (sym == NULL) return -ENOMEM; @@ -661,7 +674,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map, if (len + 2 >= line_len) continue; - sym = symbol__new(start, size, line + len); + sym = symbol__new(start, size, STB_GLOBAL, line + len); if (sym == NULL) goto out_delete_line; @@ -873,7 +886,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, "%s@plt", elf_sym__name(&sym, symstrs)); f = symbol__new(plt_offset, shdr_plt.sh_entsize, - sympltname); + STB_GLOBAL, sympltname); if (!f) goto out_elf_end; @@ -895,7 +908,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map, "%s@plt", elf_sym__name(&sym, symstrs)); f = symbol__new(plt_offset, shdr_plt.sh_entsize, - sympltname); + STB_GLOBAL, sympltname); if (!f) goto out_elf_end; @@ -1146,7 +1159,8 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name, if (demangled != NULL) elf_name = demangled; new_symbol: - f = symbol__new(sym.st_value, sym.st_size, elf_name); + f = symbol__new(sym.st_value, sym.st_size, + GELF_ST_BIND(sym.st_info), elf_name); free(demangled); if (!f) goto out_elf_end; diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 906be20011d9..b7a8da4af5a0 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -53,6 +53,7 @@ struct symbol { u64 start; u64 end; u16 namelen; + u8 binding; char name[0]; }; |