linux-kernel - [PATCH 10/12] libperf: Add ksymbol

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Date:   Sun, 25 Aug 2019 20:17:50 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>
Subject: [PATCH 10/12] libperf: Add ksymbol_event to perf/event.h

Moving ksymbol_event event definition into libperf's event.h
header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8'
types used events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Adding and using new PRI_lu64 and PRI_lx64 macros to be used for
that.  Using extra '_' to ease up the reading and differentiate
them from standard PRI*64 macros.

Link: http://lkml.kernel.org/n/tip-2galzeqp0v362u9ie8oci8cn@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/lib/include/perf/event.h | 13 +++++++++++++
 tools/perf/util/event.c             |  2 +-
 tools/perf/util/event.h             | 13 -------------
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/tools/perf/lib/include/perf/event.h b/tools/perf/lib/include/perf/event.h
index 80d0bc48baff..ecab3246913d 100644
--- a/tools/perf/lib/include/perf/event.h
+++ b/tools/perf/lib/include/perf/event.h
@@ -80,4 +80,17 @@ struct throttle_event {
 	__u64 stream_id;
 };
 
+#ifndef KSYM_NAME_LEN
+#define KSYM_NAME_LEN 256
+#endif
+
+struct ksymbol_event {
+	struct perf_event_header header;
+	__u64 addr;
+	__u32 len;
+	__u16 ksym_type;
+	__u16 flags;
+	char name[KSYM_NAME_LEN];
+};
+
 #endif /* __LIBPERF_EVENT_H */
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 3bd9fc2a3ae8..4447cd25e3f2 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1485,7 +1485,7 @@ static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
 
 size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
 {
-	return fprintf(fp, " addr %" PRIx64 " len %u type %u flags 0x%x name %s\n",
+	return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
 		       event->ksymbol_event.addr, event->ksymbol_event.len,
 		       event->ksymbol_event.ksym_type,
 		       event->ksymbol_event.flags, event->ksymbol_event.name);
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index d03a70e2e6a4..dbabde3a43a6 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -16,19 +16,6 @@
 #define PRI_lu64 "l" PRIu64
 #define PRI_lx64 "l" PRIx64
 
-#ifndef KSYM_NAME_LEN
-#define KSYM_NAME_LEN 256
-#endif
-
-struct ksymbol_event {
-	struct perf_event_header header;
-	u64 addr;
-	u32 len;
-	u16 ksym_type;
-	u16 flags;
-	char name[KSYM_NAME_LEN];
-};
-
 struct bpf_event {
 	struct perf_event_header header;
 	u16 type;
-- 
2.21.0