From af30bffa2f9aa73a648ea932ed468dc3031ac1f9 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 26 Apr 2018 11:09:10 -0300 Subject: [PATCH] perf symbols: Store the ELF symbol type in the symbol struct There is code that needs to see if a resolved address is a function, so, since we're going to ditch the MAP__{FUNCTION,VARIABLE} split, store that info in the per symbol struct. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-9ugwxz0i8ryg5702rx8u5q6z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/hists_common.c | 2 +- tools/perf/util/db-export.c | 2 +- tools/perf/util/srcline.c | 1 + tools/perf/util/symbol-elf.c | 7 ++++--- tools/perf/util/symbol.c | 7 ++++--- tools/perf/util/symbol.h | 5 +++-- 6 files changed, 14 insertions(+), 10 deletions(-) diff --git a/tools/perf/tests/hists_common.c b/tools/perf/tests/hists_common.c index f7c5b613d667..d0366fde72a3 100644 --- a/tools/perf/tests/hists_common.c +++ b/tools/perf/tests/hists_common.c @@ -138,7 +138,7 @@ struct machine *setup_fake_machine(struct machines *machines) struct fake_sym *fsym = &fake_symbols[i].syms[k]; sym = symbol__new(fsym->start, fsym->length, - STB_GLOBAL, fsym->name); + STB_GLOBAL, STT_FUNC, fsym->name); if (sym == NULL) { dso__put(dso); goto out; diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 04fb1a99c737..12d60703c8fc 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -247,7 +247,7 @@ static int db_ids_from_al(struct db_export *dbe, struct addr_location *al, *dso_db_id = dso->db_id; if (!al->sym) { - al->sym = symbol__new(al->addr, 0, 0, "unknown"); + al->sym = symbol__new(al->addr, 0, 0, 0, "unknown"); if (al->sym) dso__insert_symbol(dso, al->map->type, al->sym); } diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c index 3c21fd059b64..09d6746e6ec8 100644 --- a/tools/perf/util/srcline.c +++ b/tools/perf/util/srcline.c @@ -103,6 +103,7 @@ static struct symbol *new_inline_sym(struct dso *dso, inline_sym = symbol__new(base_sym ? base_sym->start : 0, base_sym ? base_sym->end : 0, base_sym ? base_sym->binding : 0, + base_sym ? base_sym->type : 0, funcname); if (inline_sym) inline_sym->inlined = 1; diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index b6be6062cae0..88f6f3050665 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -364,7 +364,7 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map * free(demangled); f = symbol__new(plt_offset, plt_entry_size, - STB_GLOBAL, sympltname); + STB_GLOBAL, STT_FUNC, sympltname); if (!f) goto out_elf_end; @@ -390,7 +390,7 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map * free(demangled); f = symbol__new(plt_offset, plt_entry_size, - STB_GLOBAL, sympltname); + STB_GLOBAL, STT_FUNC, sympltname); if (!f) goto out_elf_end; @@ -1102,7 +1102,8 @@ new_symbol: elf_name = demangled; f = symbol__new(sym.st_value, sym.st_size, - GELF_ST_BIND(sym.st_info), elf_name); + GELF_ST_BIND(sym.st_info), + GELF_ST_TYPE(sym.st_info), elf_name); free(demangled); if (!f) goto out_elf_end; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 2b81ccc94a7e..e1fd236c96d3 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -256,7 +256,7 @@ out_unlock: up_write(&maps->lock); } -struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name) +struct symbol *symbol__new(u64 start, u64 len, u8 binding, u8 type, const char *name) { size_t namelen = strlen(name) + 1; struct symbol *sym = calloc(1, (symbol_conf.priv_size + @@ -274,6 +274,7 @@ struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name) sym->start = start; sym->end = len ? start + len : start; + sym->type = type; sym->binding = binding; sym->namelen = namelen - 1; @@ -682,7 +683,7 @@ static int map__process_kallsym_symbol(void *arg, const char *name, * symbols, setting length to 0, and rely on * symbols__fixup_end() to fix it up. */ - sym = symbol__new(start, 0, kallsyms2elf_binding(type), name); + sym = symbol__new(start, 0, kallsyms2elf_binding(type), kallsyms2elf_type(type), name); if (sym == NULL) return -ENOMEM; /* @@ -1395,7 +1396,7 @@ static int dso__load_perf_map(const char *map_path, struct dso *dso, if (len + 2 >= line_len) continue; - sym = symbol__new(start, size, STB_GLOBAL, line + len); + sym = symbol__new(start, size, STB_GLOBAL, STT_FUNC, line + len); if (sym == NULL) goto out_delete_line; diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 2b985ff2e725..3e2ac485c6d9 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -57,7 +57,8 @@ struct symbol { u64 start; u64 end; u16 namelen; - u8 binding; + u8 type:4; + u8 binding:4; u8 idle:1; u8 ignore:1; u8 inlined:1; @@ -292,7 +293,7 @@ void symbol__exit(void); void symbol__elf_init(void); int symbol__annotation_init(void); -struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name); +struct symbol *symbol__new(u64 start, u64 len, u8 binding, u8 type, const char *name); size_t __symbol__fprintf_symname_offs(const struct symbol *sym, const struct addr_location *al, bool unknown_as_addr,