Commit-ID: 85c116a6cb91a5c09b7a6c95ffc6a6cbd32cd237 Gitweb: http://git.kernel.org/tip/85c116a6cb91a5c09b7a6c95ffc6a6cbd32cd237 Author: Andi Kleen <a...@linux.intel.com> AuthorDate: Wed, 12 Nov 2014 18:05:27 -0800 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Mon, 24 Nov 2014 18:03:47 -0300
perf callchain: Make get_srcline fall back to sym+offset When the source line is not found fall back to sym + offset. This is generally much more useful than a raw address. For this we need to pass in the symbol from the caller. For some callers it's awkward to compute, so we stay at the old behaviour. Signed-off-by: Andi Kleen <a...@linux.intel.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhy...@kernel.org> Link: http://lkml.kernel.org/r/1415844328-4884-10-git-send-email-a...@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/annotate.c | 2 +- tools/perf/util/callchain.c | 3 ++- tools/perf/util/map.c | 2 +- tools/perf/util/sort.c | 6 ++++-- tools/perf/util/srcline.c | 11 +++++++++-- tools/perf/util/util.h | 4 +++- 6 files changed, 20 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index e5670f1..79999ce 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1192,7 +1192,7 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map, goto next; offset = start + i; - src_line->path = get_srcline(map->dso, offset); + src_line->path = get_srcline(map->dso, offset, NULL, false); insert_source_line(&tmp_root, src_line); next: diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index b6624ae..517ed84 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -819,7 +819,8 @@ char *callchain_list__sym_name(struct callchain_list *cl, cl->ms.map && !cl->srcline) cl->srcline = get_srcline(cl->ms.map->dso, map__rip_2objdump(cl->ms.map, - cl->ip)); + cl->ip), + cl->ms.sym, false); if (cl->srcline) printed = scnprintf(bf, bfsize, "%s %s", cl->ms.sym->name, cl->srcline); diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 040a785..62ca9f2 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -360,7 +360,7 @@ int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix, if (map && map->dso) { srcline = get_srcline(map->dso, - map__rip_2objdump(map, addr)); + map__rip_2objdump(map, addr), NULL, true); if (srcline != SRCLINE_UNKNOWN) ret = fprintf(fp, "%s%s", prefix, srcline); free_srcline(srcline); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 82a5596..9139dda 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -291,7 +291,8 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right) else { struct map *map = left->ms.map; left->srcline = get_srcline(map->dso, - map__rip_2objdump(map, left->ip)); + map__rip_2objdump(map, left->ip), + left->ms.sym, true); } } if (!right->srcline) { @@ -300,7 +301,8 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right) else { struct map *map = right->ms.map; right->srcline = get_srcline(map->dso, - map__rip_2objdump(map, right->ip)); + map__rip_2objdump(map, right->ip), + right->ms.sym, true); } } return strcmp(right->srcline, left->srcline); diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c index ac877f9..e73b6a5 100644 --- a/tools/perf/util/srcline.c +++ b/tools/perf/util/srcline.c @@ -8,6 +8,8 @@ #include "util/util.h" #include "util/debug.h" +#include "symbol.h" + #ifdef HAVE_LIBBFD_SUPPORT /* @@ -250,7 +252,8 @@ void dso__free_a2l(struct dso *dso __maybe_unused) */ #define A2L_FAIL_LIMIT 123 -char *get_srcline(struct dso *dso, unsigned long addr) +char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym, + bool show_sym) { char *file = NULL; unsigned line = 0; @@ -289,7 +292,11 @@ out: dso->has_srcline = 0; dso__free_a2l(dso); } - if (asprintf(&srcline, "%s[%lx]", dso->short_name, addr) < 0) + if (sym) { + if (asprintf(&srcline, "%s+%ld", show_sym ? sym->name : "", + addr - sym->start) < 0) + return SRCLINE_UNKNOWN; + } else if (asprintf(&srcline, "%s[%lx]", dso->short_name, addr) < 0) return SRCLINE_UNKNOWN; return srcline; } diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 76d23d8..419bee0 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -337,8 +337,10 @@ static inline int path__join3(char *bf, size_t size, } struct dso; +struct symbol; -char *get_srcline(struct dso *dso, unsigned long addr); +char *get_srcline(struct dso *dso, unsigned long addr, struct symbol *sym, + bool show_sym); void free_srcline(char *srcline); int filename__read_int(const char *filename, int *value); -- 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/
