diff options
| author | Arnaldo Carvalho de Melo | 2018-04-23 22:13:49 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo | 2018-04-26 18:47:06 +0200 |
| commit | e94b861a231501e73d786970ed5a1fb3ea643906 (patch) | |
| tree | 03d5e4ceba24394b2b5f7b14a741870d47ab2c07 /tools | |
| parent | perf dso: Add dso__has_symbols() method (diff) | |
| download | kernel-qcow2-linux-e94b861a231501e73d786970ed5a1fb3ea643906.tar.gz kernel-qcow2-linux-e94b861a231501e73d786970ed5a1fb3ea643906.tar.xz kernel-qcow2-linux-e94b861a231501e73d786970ed5a1fb3ea643906.zip | |
perf map: Introduce map__has_symbols()
To further simplify checking if symbols are available for a given map
and to reduce the number of users of MAP__{FUNCTION,VARIABLE}.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-iyfoyvbfdti5uehgpjum3qrq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-report.c | 9 | ||||
| -rw-r--r-- | tools/perf/builtin-top.c | 5 | ||||
| -rw-r--r-- | tools/perf/util/map.c | 5 | ||||
| -rw-r--r-- | tools/perf/util/map.h | 2 |
4 files changed, 12 insertions, 9 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index a4104e447f56..68ea336bf311 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -523,12 +523,9 @@ static void report__warn_kptr_restrict(const struct report *rep) "As no suitable kallsyms nor vmlinux was found, kernel samples\n" "can't be resolved."; - if (kernel_map) { - const struct dso *kdso = kernel_map->dso; - if (dso__has_symbols(kdso, MAP__FUNCTION)) { - desc = "If some relocation was applied (e.g. " - "kexec) symbols may be misresolved."; - } + if (kernel_map && map__has_symbols(kernel_map)) { + desc = "If some relocation was applied (e.g. " + "kexec) symbols may be misresolved."; } ui__warning( diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index c11b46b411d5..3c061c57afb6 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -742,7 +742,7 @@ static void perf_event__process_sample(struct perf_tool *tool, "Kernel address maps (/proc/{kallsyms,modules}) are restricted.\n\n" "Check /proc/sys/kernel/kptr_restrict.\n\n" "Kernel%s samples will not be resolved.\n", - al.map && dso__has_symbols(al.map->dso, MAP__FUNCTION) ? + al.map && map__has_symbols(al.map) ? " modules" : ""); if (use_browser <= 0) sleep(5); @@ -764,8 +764,7 @@ static void perf_event__process_sample(struct perf_tool *tool, * invalid --vmlinux ;-) */ if (!machine->kptr_restrict_warned && !top->vmlinux_warned && - __map__is_kernel(al.map) && - dso__has_symbols(al.map->dso, MAP__FUNCTION)) { + __map__is_kernel(al.map) && map__has_symbols(al.map)) { if (symbol_conf.vmlinux_name) { char serr[256]; dso__strerror_load(al.map->dso, serr, sizeof(serr)); diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 8fe57031e1a8..f553e302bf9c 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -259,6 +259,11 @@ bool __map__is_kernel(const struct map *map) return __machine__kernel_map(map->groups->machine, map->type) == map; } +bool map__has_symbols(const struct map *map) +{ + return dso__has_symbols(map->dso, map->type); +} + static void map__exit(struct map *map) { BUG_ON(!RB_EMPTY_NODE(&map->rb_node)); diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index 0e9bbe01b0ab..fc91bac8fed0 100644 --- a/tools/perf/util/map.h +++ b/tools/perf/util/map.h @@ -264,4 +264,6 @@ static inline bool __map__is_kmodule(const struct map *map) return !__map__is_kernel(map); } +bool map__has_symbols(const struct map *map); + #endif /* __PERF_MAP_H */ |