Messages in this thread Patch in this message | | | From | Adrian Hunter <> | Subject | [PATCH RFC 09/11] perf dlfilter: Add srcline() to perf_dlfilter_fns | Date | Mon, 21 Jun 2021 18:05:12 +0300 |
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Add a function, for use by dlfilters, to return source code file name and line number.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- tools/perf/Documentation/perf-dlfilter.txt | 5 +++- tools/perf/util/dlfilter.c | 28 ++++++++++++++++++++++ tools/perf/util/perf_dlfilter.h | 4 +++- 3 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/tools/perf/Documentation/perf-dlfilter.txt b/tools/perf/Documentation/perf-dlfilter.txt index 5ed64bbf084e..b6f958983584 100644 --- a/tools/perf/Documentation/perf-dlfilter.txt +++ b/tools/perf/Documentation/perf-dlfilter.txt @@ -111,7 +111,8 @@ struct perf_dlfilter_fns { const struct perf_dlfilter_al *(*resolve_addr)(void *ctx); __s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al); const __u8 *(*insn)(void *ctx, __u32 *length); - void *(*reserved[124])(void *); + const char *(*srcline)(void *ctx, __u32 *line_number); + void *(*reserved[123])(void *); }; ---- @@ -124,6 +125,8 @@ before calling. Returns 0 on success, -1 otherwise. 'insn' returns instruction bytes and length. +'srcline' return source file name and line number. + The perf_dlfilter_al structure ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c index 375fb01bdeb8..d71b0c97d1eb 100644 --- a/tools/perf/util/dlfilter.c +++ b/tools/perf/util/dlfilter.c @@ -17,6 +17,7 @@ #include "thread.h" #include "trace-event.h" #include "symbol.h" +#include "srcline.h" #include "dlfilter.h" #include "perf_dlfilter.h" @@ -190,11 +191,38 @@ static const __u8 *dlfilter__insn(void *ctx, __u32 *len) return (__u8 *)d->sample->insn; } +static const char *dlfilter__srcline(void *ctx, __u32 *line_no) +{ + struct dlfilter *d = (struct dlfilter *)ctx; + struct addr_location *al; + unsigned int line = 0; + char *srcfile = NULL; + struct map *map; + u64 addr; + + if (!d->ctx_valid || !line_no) + return NULL; + + al = get_al(d); + if (!al) + return NULL; + + map = al->map; + addr = al->addr; + + if (map && map->dso) + srcfile = get_srcline_split(map->dso, map__rip_2objdump(map, addr), &line); + + *line_no = line; + return srcfile; +} + static const struct perf_dlfilter_fns perf_dlfilter_fns = { .resolve_ip = dlfilter__resolve_ip, .resolve_addr = dlfilter__resolve_addr, .resolve_address = dlfilter__resolve_address, .insn = dlfilter__insn, + .srcline = dlfilter__srcline, }; #define CHECK_FLAG(x) BUILD_BUG_ON((u64)PERF_DLFILTER_FLAG_ ## x != (u64)PERF_IP_FLAG_ ## x) diff --git a/tools/perf/util/perf_dlfilter.h b/tools/perf/util/perf_dlfilter.h index 913b773af268..a91e314ba24a 100644 --- a/tools/perf/util/perf_dlfilter.h +++ b/tools/perf/util/perf_dlfilter.h @@ -97,8 +97,10 @@ struct perf_dlfilter_fns { __s32 (*resolve_address)(void *ctx, __u64 address, struct perf_dlfilter_al *al); /* Return instruction bytes and length */ const __u8 *(*insn)(void *ctx, __u32 *length); + /* Return source file name and line number */ + const char *(*srcline)(void *ctx, __u32 *line_number); /* Reserved */ - void *(*reserved[124])(void *); + void *(*reserved[123])(void *); }; /* -- 2.17.1
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