Commit-ID: e02092b9a922f17e951b2df5f12f4aafe7383a21 Gitweb: http://git.kernel.org/tip/e02092b9a922f17e951b2df5f12f4aafe7383a21 Author: Arnaldo Carvalho de Melo <[email protected]> AuthorDate: Tue, 19 Apr 2016 12:12:49 -0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 19 Apr 2016 12:38:56 -0300
perf symbols: Allow loading kallsyms without considering kcore files Before the support for using /proc/kcore was introduced, the kallsyms routines used /proc/modules and the first 'perf test' entry expected finding maps for each module in the system, which is not the case with the kcore code. Provide a way to ignore kcore files so that the test can have its expectations met. Improving the test to cover kcore files as well needs to be done. Cc: Adrian Hunter <[email protected]> Cc: David Ahern <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Wang Nan <[email protected]> Link: http://lkml.kernel.org/n/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/machine.c | 12 +++++++++--- tools/perf/util/machine.h | 2 ++ tools/perf/util/symbol.c | 12 +++++++++--- tools/perf/util/symbol.h | 2 ++ 4 files changed, 22 insertions(+), 6 deletions(-) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 52b51e0..656c1d7 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -908,11 +908,11 @@ int machines__create_kernel_maps(struct machines *machines, pid_t pid) return machine__create_kernel_maps(machine); } -int machine__load_kallsyms(struct machine *machine, const char *filename, - enum map_type type, symbol_filter_t filter) +int __machine__load_kallsyms(struct machine *machine, const char *filename, + enum map_type type, bool no_kcore, symbol_filter_t filter) { struct map *map = machine__kernel_map(machine); - int ret = dso__load_kallsyms(map->dso, filename, map, filter); + int ret = __dso__load_kallsyms(map->dso, filename, map, no_kcore, filter); if (ret > 0) { dso__set_loaded(map->dso, type); @@ -927,6 +927,12 @@ int machine__load_kallsyms(struct machine *machine, const char *filename, return ret; } +int machine__load_kallsyms(struct machine *machine, const char *filename, + enum map_type type, symbol_filter_t filter) +{ + return __machine__load_kallsyms(machine, filename, type, false, filter); +} + int machine__load_vmlinux_path(struct machine *machine, enum map_type type, symbol_filter_t filter) { diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 382873b..4822de5 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -215,6 +215,8 @@ struct symbol *machine__find_kernel_function_by_name(struct machine *machine, struct map *machine__findnew_module_map(struct machine *machine, u64 start, const char *filename); +int __machine__load_kallsyms(struct machine *machine, const char *filename, + enum map_type type, bool no_kcore, symbol_filter_t filter); int machine__load_kallsyms(struct machine *machine, const char *filename, enum map_type type, symbol_filter_t filter); int machine__load_vmlinux_path(struct machine *machine, enum map_type type, diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index a36823c..415c4f6 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1208,8 +1208,8 @@ static int kallsyms__delta(struct map *map, const char *filename, u64 *delta) return 0; } -int dso__load_kallsyms(struct dso *dso, const char *filename, - struct map *map, symbol_filter_t filter) +int __dso__load_kallsyms(struct dso *dso, const char *filename, + struct map *map, bool no_kcore, symbol_filter_t filter) { u64 delta = 0; @@ -1230,12 +1230,18 @@ int dso__load_kallsyms(struct dso *dso, const char *filename, else dso->symtab_type = DSO_BINARY_TYPE__KALLSYMS; - if (!dso__load_kcore(dso, map, filename)) + if (!no_kcore && !dso__load_kcore(dso, map, filename)) return dso__split_kallsyms_for_kcore(dso, map, filter); else return dso__split_kallsyms(dso, map, delta, filter); } +int dso__load_kallsyms(struct dso *dso, const char *filename, + struct map *map, symbol_filter_t filter) +{ + return __dso__load_kallsyms(dso, filename, map, false, filter); +} + static int dso__load_perf_map(struct dso *dso, struct map *map, symbol_filter_t filter) { diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 1da7b10..c8e4397 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -240,6 +240,8 @@ int dso__load_vmlinux(struct dso *dso, struct map *map, symbol_filter_t filter); int dso__load_vmlinux_path(struct dso *dso, struct map *map, symbol_filter_t filter); +int __dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map, + bool no_kcore, symbol_filter_t filter); int dso__load_kallsyms(struct dso *dso, const char *filename, struct map *map, symbol_filter_t filter);
