Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753276Ab2HMSnb (ORCPT ); Mon, 13 Aug 2012 14:43:31 -0400 Received: from merlin.infradead.org ([205.233.59.134]:49421 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753051Ab2HMSht (ORCPT ); Mon, 13 Aug 2012 14:37:49 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Cody P Schafer , David Hansen , Ingo Molnar , Matt Hellsley , Namhyung Kim , Paul Mackerras , Peter Zijlstra , Sukadev Bhattiprolu , Arnaldo Carvalho de Melo Subject: [PATCH 35/38] perf symbols: Factor want_symtab out of dso__load_sym() Date: Mon, 13 Aug 2012 15:37:16 -0300 Message-Id: <1344883039-13495-36-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.7.9.2.358.g22243 In-Reply-To: <1344883039-13495-1-git-send-email-acme@infradead.org> References: <1344883039-13495-1-git-send-email-acme@infradead.org> Content-Type: text/plain; charset="UTF-8" X-SRS-Rewrite: SMTP reverse-path rewritten from by canuck.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5071 Lines: 163 From: Cody P Schafer Only one callsite of dso__load_sym() uses the want_symtab functionality, so place the logic at the callsite instead of within dso__load_sym(). This sets us up for removal of want_symtab completely once we keep multiple elf handles (within symsrc's) around. Setup for the later patch "perf symbols: Use both runtime and debug images" Signed-off-by: Cody P Schafer Cc: David Hansen Cc: Ingo Molnar Cc: Matt Hellsley Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Sukadev Bhattiprolu Link: http://lkml.kernel.org/r/1344637382-22789-15-git-send-email-cody@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 21 ++++++++++----------- tools/perf/util/symbol-minimal.c | 8 ++++++-- tools/perf/util/symbol.c | 10 +++++++--- tools/perf/util/symbol.h | 3 ++- 4 files changed, 25 insertions(+), 17 deletions(-) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 5915947..492ebec 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -525,6 +525,10 @@ static int dso__swap_init(struct dso *dso, unsigned char eidata) return 0; } +bool symsrc__has_symtab(struct symsrc *ss) +{ + return ss->symtab != NULL; +} void symsrc__destroy(struct symsrc *ss) { @@ -616,7 +620,7 @@ out_close: } int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, - symbol_filter_t filter, int kmodule, int want_symtab) + symbol_filter_t filter, int kmodule) { struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL; struct map *curr_map = map; @@ -636,21 +640,16 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, dso->symtab_type = ss->type; + if (!ss->symtab) { + ss->symtab = ss->dynsym; + ss->symshdr = ss->dynshdr; + } + elf = ss->elf; ehdr = ss->ehdr; sec = ss->symtab; shdr = ss->symshdr; - if (sec == NULL) { - if (want_symtab) - goto out_elf_end; - - sec = ss->dynsym; - shdr = ss->dynshdr; - if (sec == NULL) - goto out_elf_end; - } - opdsec = ss->opdsec; opdshdr = ss->opdshdr; opdidx = ss->opdidx; diff --git a/tools/perf/util/symbol-minimal.c b/tools/perf/util/symbol-minimal.c index cc580c0..11c2c60 100644 --- a/tools/perf/util/symbol-minimal.c +++ b/tools/perf/util/symbol-minimal.c @@ -260,6 +260,11 @@ out_close: return -1; } +bool symsrc__has_symtab(struct symsrc *ss __used) +{ + return false; +} + void symsrc__destroy(struct symsrc *ss) { free(ss->name); @@ -275,8 +280,7 @@ int dso__synthesize_plt_symbols(struct dso *dso __used, } int dso__load_sym(struct dso *dso, struct map *map __used, struct symsrc *ss, - symbol_filter_t filter __used, int kmodule __used, - int want_symtab __used) + symbol_filter_t filter __used, int kmodule __used) { unsigned char *build_id[BUILD_ID_SIZE]; diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f8a3068..8e7d74f 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1089,8 +1089,12 @@ restart: if (symsrc__init(&ss, dso, name, symtab_type) < 0) continue; - ret = dso__load_sym(dso, map, &ss, filter, 0, - want_symtab); + if (want_symtab && !symsrc__has_symtab(&ss)) { + symsrc__destroy(&ss); + continue; + } + + ret = dso__load_sym(dso, map, &ss, filter, 0); /* * Some people seem to have debuginfo files _WITHOUT_ debug @@ -1376,7 +1380,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, if (symsrc__init(&ss, dso, symfs_vmlinux, symtab_type)) return -1; - err = dso__load_sym(dso, map, &ss, filter, 0, 0); + err = dso__load_sym(dso, map, &ss, filter, 0); symsrc__destroy(&ss); if (err > 0) { diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 2981513..fa9f6b1 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -252,6 +252,7 @@ struct symsrc { void symsrc__destroy(struct symsrc *ss); int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, enum dso_binary_type type); +bool symsrc__has_symtab(struct symsrc *ss); #define DSO__SWAP(dso, type, val) \ ({ \ @@ -369,7 +370,7 @@ ssize_t dso__data_read_addr(struct dso *dso, struct map *map, u8 *data, ssize_t size); int dso__test_data(void); int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, - symbol_filter_t filter, int kmodule, int want_symtab); + symbol_filter_t filter, int kmodule); int dso__synthesize_plt_symbols(struct dso *dso, struct symsrc *ss, struct map *map, symbol_filter_t filter); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/