linux-kernel - [PATCH 3/4] tracing: add trace_export support for trace

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Message-Id: <20200720022117.9375-4-tingwei@codeaurora.org>
Date:   Mon, 20 Jul 2020 10:21:16 +0800
From:   Tingwei Zhang <tingwei@...eaurora.org>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>
Cc:     Tingwei Zhang <tingwei@...eaurora.org>, tsoni@...eaurora.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Mao Jinlong <jinlmao@...eaurora.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] tracing: add trace_export support for trace_marker

Add the support to route trace_marker buffer to other destination
via trace_export.

Signed-off-by: Tingwei Zhang <tingwei@...eaurora.org>
---
 kernel/trace/trace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index aef6330836e2..ac18e0ee9246 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -6639,6 +6639,8 @@ tracing_mark_write(struct file *filp, const char __user *ubuf,
 	} else
 		entry->buf[cnt] = '\0';
 
+	if (static_branch_unlikely(&ftrace_exports_enabled))
+		ftrace_exports(event);
 	__buffer_unlock_commit(buffer, event);
 
 	if (tt)
-- 
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