[PATCH v25 12/16] trace-cmd: Define a macro for packed structures

From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v25 12/16] trace-cmd: Define a macro for packed structures
Date: Thu, 29 Oct 2020 13:18:12 +0200	[thread overview]
Message-ID: <20201029111816.247241-13-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20201029111816.247241-1-tz.stoyanov@gmail.com>

Defined a new macro
 #define __packed __attribute__((packed))
used for packing the structures, to make the code look cleaner.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 lib/trace-cmd/include/trace-cmd-local.h |  2 ++
 lib/trace-cmd/trace-msg.c               | 14 +++++++-------
 lib/trace-cmd/trace-timesync.c          |  2 +-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/trace-cmd/include/trace-cmd-local.h b/lib/trace-cmd/include/trace-cmd-local.h
index 95dce66c..19f7add8 100644
--- a/lib/trace-cmd/include/trace-cmd-local.h
+++ b/lib/trace-cmd/include/trace-cmd-local.h
@@ -9,6 +9,8 @@
 /* Can be overridden */
 void warning(const char *fmt, ...);
 
+#define __packed __attribute__((packed))
+
 /* trace.dat file format version */
 #define FILE_VERSION 6
 
diff --git a/lib/trace-cmd/trace-msg.c b/lib/trace-cmd/trace-msg.c
index 59ff33c8..905ae281 100644
--- a/lib/trace-cmd/trace-msg.c
+++ b/lib/trace-cmd/trace-msg.c
@@ -57,11 +57,11 @@ struct tracecmd_msg_tinit {
 	be32 cpus;
 	be32 page_size;
 	be32 opt_num;
-} __attribute__((packed));
+} __packed;
 
 struct tracecmd_msg_rinit {
 	be32 cpus;
-} __attribute__((packed));
+} __packed;
 
 #define TRACE_REQ_PARAM_SIZE  (2 * sizeof(int))
 enum trace_req_params {
@@ -79,7 +79,7 @@ struct tracecmd_msg_trace_req {
 	be32 flags;
 	be32 argc;
 	u64 trace_id;
-} __attribute__((packed));
+} __packed;
 
 struct tracecmd_msg_trace_resp {
 	be32 flags;
@@ -88,18 +88,18 @@ struct tracecmd_msg_trace_resp {
 	u64 trace_id;
 	char tsync_proto_name[TRACECMD_TSYNC_PNAME_LENGTH];
 	be32 tsync_port;
-} __attribute__((packed));
+} __packed;
 
 struct tracecmd_msg_tsync {
 	char sync_protocol_name[TRACECMD_TSYNC_PNAME_LENGTH];
 	be32 sync_msg_id;
-} __attribute__((packed));
+} __packed;
 
 struct tracecmd_msg_header {
 	be32	size;
 	be32	cmd;
 	be32	cmd_size;
-} __attribute__((packed));
+} __packed;
 
 #define MSG_MAP								\
 	C(CLOSE,	0,	0),					\
@@ -148,7 +148,7 @@ struct tracecmd_msg {
 		struct tracecmd_msg_tsync	tsync;
 	};
 	char					*buf;
-} __attribute__((packed));
+} __packed;
 
 static inline int msg_buf_len(struct tracecmd_msg *msg)
 {
diff --git a/lib/trace-cmd/trace-timesync.c b/lib/trace-cmd/trace-timesync.c
index 676a9482..40d50fd5 100644
--- a/lib/trace-cmd/trace-timesync.c
+++ b/lib/trace-cmd/trace-timesync.c
@@ -41,7 +41,7 @@ struct tsync_proto {
 
 struct tsync_probe_request_msg {
 	be16	cpu;
-} __attribute__((packed));
+} __packed;
 
 static struct tsync_proto *tsync_proto_list;
 
-- 
2.26.2

