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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-10-31 15:30:09 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-10-31 20:17:03 +0100 |
| commit | 0a2f7540abc08e32f89ff273506eeeeb6910794f (patch) | |
| tree | edc6a920999dd3e38687fbebf2f28c9a8c69e18e /tools/perf | |
| parent | tools include uapi: Grab a copy of linux/kcmp.h (diff) | |
| download | linux-0a2f7540abc08e32f89ff273506eeeeb6910794f.tar.xz linux-0a2f7540abc08e32f89ff273506eeeeb6910794f.zip | |
perf trace beauty: Implement pid_fd beautifier
One that given a pid and a fd, will try to get the path for that fd.
Will be used in the upcoming kcmp's KCMP_FILE beautifier.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
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: http://lkml.kernel.org/n/tip-7ketygp2dvs9h13wuakfncws@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-trace.c | 17 | ||||
| -rw-r--r-- | tools/perf/trace/beauty/beauty.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index c373f9a3e4a9..0c1461416ef1 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -988,6 +988,23 @@ size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg) return printed; } +size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size) +{ + size_t printed = scnprintf(bf, size, "%d", fd); + struct thread *thread = machine__find_thread(trace->host, pid, pid); + + if (thread) { + const char *path = thread__fd_path(thread, fd, trace); + + if (path) + printed += scnprintf(bf + printed, size - printed, "<%s>", path); + + thread__put(thread); + } + + return printed; +} + static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, struct syscall_arg *arg) { diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h index b29f94ef5d6a..365bb6fecc1c 100644 --- a/tools/perf/trace/beauty/beauty.h +++ b/tools/perf/trace/beauty/beauty.h @@ -3,6 +3,7 @@ #include <linux/kernel.h> #include <linux/types.h> +#include <sys/types.h> struct strarray { int offset; @@ -26,6 +27,8 @@ size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const cha struct trace; struct thread; +size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size); + /** * @val: value of syscall argument being formatted * @args: All the args, use syscall_args__val(arg, nth) to access one |