From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH v34 1/5] trace-cmd: Add dummy function to initialize timestamp sync logic
Date: Wed, 31 Mar 2021 10:28:57 +0300 [thread overview]
Message-ID: <20210331072901.152880-2-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210331072901.152880-1-tz.stoyanov@gmail.com>
A dummy empty function is added, will be used to initialize timestamp
synchronization logic:
tracecmd_tsync_init()
When this code is implemented as real plugins, this function will be
removed. Then the initializion will be triggered at plugin load time.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
lib/trace-cmd/trace-timesync.c | 8 ++++++++
tracecmd/trace-agent.c | 1 +
tracecmd/trace-record.c | 25 ++++++++++++++++---------
3 files changed, 25 insertions(+), 9 deletions(-)
diff --git a/lib/trace-cmd/trace-timesync.c b/lib/trace-cmd/trace-timesync.c
index e860c335..6f2d54aa 100644
--- a/lib/trace-cmd/trace-timesync.c
+++ b/lib/trace-cmd/trace-timesync.c
@@ -55,6 +55,14 @@ static struct tsync_proto *tsync_proto_find(const char *proto_name)
return NULL;
}
+/**
+ * tracecmd_tsync_init - Initialize the global, per task, time sync data.
+ */
+void tracecmd_tsync_init(void)
+{
+
+}
+
int tracecmd_tsync_proto_register(const char *proto_name, int accuracy, int roles,
int supported_clocks, unsigned int flags,
int (*init)(struct tracecmd_time_sync *),
diff --git a/tracecmd/trace-agent.c b/tracecmd/trace-agent.c
index 49f6dd8c..1f7d9461 100644
--- a/tracecmd/trace-agent.c
+++ b/tracecmd/trace-agent.c
@@ -250,6 +250,7 @@ static void agent_serve(unsigned int port)
sd = trace_make_vsock(port);
if (sd < 0)
die("Failed to open vsocket");
+ tracecmd_tsync_init();
if (!get_local_cid(&cid))
printf("listening on @%u:%u\n", cid, port);
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index 5e69cf48..63817d43 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -6545,10 +6545,6 @@ out:
free(clock);
}
-/*
- * This function contains common code for the following commands:
- * record, start, stream, profile.
- */
static void record_trace(int argc, char **argv,
struct common_record_context *ctx)
{
@@ -6712,12 +6708,23 @@ static void record_trace(int argc, char **argv,
finalize_record_trace(ctx);
}
+/*
+ * This function contains common code for the following commands:
+ * record, start, stream, profile.
+ */
+static void record_trace_command(int argc, char **argv,
+ struct common_record_context *ctx)
+{
+ tracecmd_tsync_init();
+ record_trace(argc, argv, ctx);
+}
+
void trace_start(int argc, char **argv)
{
struct common_record_context ctx;
parse_record_options(argc, argv, CMD_start, &ctx);
- record_trace(argc, argv, &ctx);
+ record_trace_command(argc, argv, &ctx);
exit(0);
}
@@ -6726,7 +6733,7 @@ void trace_set(int argc, char **argv)
struct common_record_context ctx;
parse_record_options(argc, argv, CMD_set, &ctx);
- record_trace(argc, argv, &ctx);
+ record_trace_command(argc, argv, &ctx);
exit(0);
}
@@ -6809,7 +6816,7 @@ void trace_stream(int argc, char **argv)
struct common_record_context ctx;
parse_record_options(argc, argv, CMD_stream, &ctx);
- record_trace(argc, argv, &ctx);
+ record_trace_command(argc, argv, &ctx);
exit(0);
}
@@ -6828,7 +6835,7 @@ void trace_profile(int argc, char **argv)
if (!buffer_instances)
top_instance.flags |= BUFFER_FL_PROFILE;
- record_trace(argc, argv, &ctx);
+ record_trace_command(argc, argv, &ctx);
do_trace_profile();
exit(0);
}
@@ -6838,7 +6845,7 @@ void trace_record(int argc, char **argv)
struct common_record_context ctx;
parse_record_options(argc, argv, CMD_record, &ctx);
- record_trace(argc, argv, &ctx);
+ record_trace_command(argc, argv, &ctx);
exit(0);
}
--
2.30.2
next prev parent reply other threads:[~2021-03-31 7:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 7:28 [PATCH v34 0/5] Timestamp synchronization of host - guest tracing session Tzvetomir Stoyanov (VMware)
2021-03-31 7:28 ` Tzvetomir Stoyanov (VMware) [this message]
2021-03-31 7:28 ` [PATCH v34 2/5] trace-cmd: Add timestamp synchronization per vCPU Tzvetomir Stoyanov (VMware)
2021-03-31 7:28 ` [PATCH v34 3/5] trace-cmd: PTP-like algorithm for host - guest timestamp synchronization Tzvetomir Stoyanov (VMware)
2021-03-31 7:29 ` [PATCH v34 4/5] trace-cmd: Debug scripts for " Tzvetomir Stoyanov (VMware)
2021-03-31 7:29 ` [PATCH v34 5/5] trace-cmd: Add KVM timestamp synchronization plugin Tzvetomir Stoyanov (VMware)
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