]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
ftrace: Have ftrace_regex_write() return either read or error
authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>
Thu, 9 May 2013 15:35:12 +0000 (11:35 -0400)
committerSteven Rostedt <rostedt@goodmis.org>
Thu, 9 May 2013 15:35:12 +0000 (11:35 -0400)
commit7c088b5120ffef017e2ddc38f992277e96436ef6
tree9cfeea9e1adc62a0e0ee452bdcbb6fc748358b6d
parentff305ded9ff83436039a16d31bc558dc6598d7ce
ftrace: Have ftrace_regex_write() return either read or error

As ftrace_regex_write() reads the result of ftrace_process_regex()
which can sometimes return a positive number, only consider a
failure if the return is negative. Otherwise, it will skip possible
other registered probes and by returning a positive number that
wasn't read, it will confuse the user processes doing the writing.

Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/ftrace.c