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tracing: Change tracing_pipe_fops() to rely on tracing_get_cpu()
authorOleg Nesterov <oleg@redhat.com>
Tue, 23 Jul 2013 15:25:57 +0000 (17:25 +0200)
committerSteven Rostedt <rostedt@rostedt.homelinux.com>
Wed, 24 Jul 2013 15:22:51 +0000 (11:22 -0400)
commit15544209cb0b5312e5220a9337a1fe61d1a1f2d9
treeec12c5587cd71821b5edff4f67dc0439438cb538tree | snapshot (tar.gz zip)
parent649e9c70da6bfbeb563193a35d3424a5aa7c0d38commit | diff
tracing: Change tracing_pipe_fops() to rely on tracing_get_cpu()

tracing_open_pipe() is racy, the memory inode->i_private points to
can be already freed.

Change debugfs_create_file("trace_pipe", data) callers to to pass
"data = tr", tracing_open_pipe() can use tracing_get_cpu().

Link: http://lkml.kernel.org/r/20130723152557.GA23717@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace.c diff | blob | blame | history