linux-kernel - [PATCH 0/3] tracing: make tp_printk work on syscall tracepoints

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Message-Id: <20220329163931.710555-1-xiehuan09@gmail.com>
Date:   Wed, 30 Mar 2022 00:39:28 +0800
From:   Jeff Xie <xiehuan09@...il.com>
To:     rostedt@...dmis.org
Cc:     mingo@...hat.com, mhiramat@...nel.org, zanussi@...nel.org,
        linux-kernel@...r.kernel.org, Jeff Xie <xiehuan09@...il.com>
Subject: [PATCH 0/3] tracing: make tp_printk work on syscall tracepoints

Currently the tp_printk option has no effect on syscall tracepoint.
When adding the kernel option parameter tp_printk, then:

echo 1 > /sys/kernel/debug/tracing/events/syscalls/enable

When running any application, no trace information is printed on the
terminal.

Now added printk for syscall tracepoints.

Jeff Xie (3):
  tracing: make tracepoint_iter_lock public
  tracing: make tracepoint_printk_key public
  tracing: make tp_printk work on syscall tracepoints

 kernel/trace/trace.c          |  4 ++--
 kernel/trace/trace.h          |  2 ++
 kernel/trace/trace_syscalls.c | 25 +++++++++++++++++++++++++
 3 files changed, 29 insertions(+), 2 deletions(-)

-- 
2.25.1