[PATCH 14/16] perf symbol: factor want_symtab out of dso__load_sym()
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 symbol: use both runtime and debug images" Signed-off-by: Cody P Schafer --- 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 2f1584b..3290f04 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(, dso, name, symtab_type) < 0) continue; - ret = dso__load_sym(dso, map, , filter, 0, - want_symtab); + if (want_symtab && !symsrc__has_symtab()) { + symsrc__destroy(); + continue; + } + + ret = dso__load_sym(dso, map, , 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(, dso, symfs_vmlinux, symtab_type)) return -1; - err = dso__load_sym(dso, map, , filter, 0, 0); + err = dso__load_sym(dso, map, , filter, 0); symsrc__destroy(); if (err > 0) { diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 95b3996..c73f4f2 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); -- 1.7.11.3 -- To unsubscribe from this list: send
[PATCH 14/16] perf symbol: factor want_symtab out of dso__load_sym()
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 symbol: use both runtime and debug images Signed-off-by: Cody P Schafer c...@linux.vnet.ibm.com --- 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 2f1584b..3290f04 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 95b3996..c73f4f2 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); -- 1.7.11.3 -- To unsubscribe from
[PATCH 14/16] perf symbol: factor want_symtab out of dso__load_sym()
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 symbol: use both runtime and debug images" Signed-off-by: Cody P Schafer --- tools/perf/util/symbol.c | 26 +++--- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f8fbde2..83d2276 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1320,8 +1320,7 @@ static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr) } static 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; @@ -1346,16 +1345,6 @@ static int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, 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; @@ -1947,8 +1936,15 @@ restart: if (symsrc__init(, dso, name, symtab_type) < 0) continue; - ret = dso__load_sym(dso, map, , filter, 0, - want_symtab); + if (want_symtab && !ss.symtab) { + symsrc__destroy(); + continue; + } else if (!want_symtab) { + ss.symtab = ss.dynsym; + ss.symshdr = ss.dynshdr; + } + + ret = dso__load_sym(dso, map, , filter, 0); /* * Some people seem to have debuginfo files _WITHOUT_ debug @@ -2253,7 +2249,7 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, if (symsrc__init(, dso, symfs_vmlinux, symtab_type)) return -1; - err = dso__load_sym(dso, map, , filter, 0, 0); + err = dso__load_sym(dso, map, , filter, 0); symsrc__destroy(); if (err > 0) { -- 1.7.11.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 14/16] perf symbol: factor want_symtab out of dso__load_sym()
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 symbol: use both runtime and debug images Signed-off-by: Cody P Schafer c...@linux.vnet.ibm.com --- tools/perf/util/symbol.c | 26 +++--- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f8fbde2..83d2276 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1320,8 +1320,7 @@ static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr) } static 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; @@ -1346,16 +1345,6 @@ static int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, 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; @@ -1947,8 +1936,15 @@ 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 !ss.symtab) { + symsrc__destroy(ss); + continue; + } else if (!want_symtab) { + ss.symtab = ss.dynsym; + ss.symshdr = ss.dynshdr; + } + + ret = dso__load_sym(dso, map, ss, filter, 0); /* * Some people seem to have debuginfo files _WITHOUT_ debug @@ -2253,7 +2249,7 @@ 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) { -- 1.7.11.3 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/