Commit-ID: 0a2f7540abc08e32f89ff273506eeeeb6910794f
Gitweb: https://git.kernel.org/tip/0a2f7540abc08e32f89ff273506eeeeb6910794f
Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
AuthorDate: Tue, 31 Oct 2017 11:30:09 -0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 31 Oct 2017 16:17:03 -0300
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@xxxxxxxxx>
Cc: Andrey Vagin <avagin@xxxxxxxxxx>
Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Wang Nan <wangnan0@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-7ketygp2dvs9h13wuakfncws@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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 c373f9a..0c14614 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 b29f94e..365bb6f 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
--
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