Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 16/19] perf trace beauty: Implement pid_fd beautifier | Date | Fri, 3 Nov 2017 10:55:00 -0300 |
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From: Arnaldo Carvalho de Melo <acme@redhat.com>
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> --- tools/perf/builtin-trace.c | 17 +++++++++++++++++ tools/perf/trace/beauty/beauty.h | 3 +++ 2 files changed, 20 insertions(+)
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 -- 2.13.6
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