https://bugzilla.kernel.org/show_bug.cgi?id=103271 --- Comment #12 from Kevin McCormack <wittyman37@xxxxxxxxx> --- This might help as well... $ git bisect view --stat commit 7e255d346c12888f7cce4b89a03a5fe5e9196ab1 Author: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Date: Thu Apr 30 08:10:24 2015 -0700 tracing: Export tracing clock functions Critical tracepoint hooks should never call anything that takes a lock, so they are unable to call getrawmonotonic() or ktime_get(). Export the rest of the tracing clock functions so can be used in tracepoint hooks. Background: We have a customer that adds their own module and registers a tracepoint hook to sched_wakeup. They were using ktime_get() for a time source, but it grabs a seq lock and caused a deadlock to occur. Link: http://lkml.kernel.org/r/1430406624-22609-1-git-send-email-jsnitsel@xxxxxxxxxx Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> :...skipping... commit 7e255d346c12888f7cce4b89a03a5fe5e9196ab1 Author: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Date: Thu Apr 30 08:10:24 2015 -0700 tracing: Export tracing clock functions Critical tracepoint hooks should never call anything that takes a lock, so they are unable to call getrawmonotonic() or ktime_get(). Export the rest of the tracing clock functions so can be used in tracepoint hooks. Background: We have a customer that adds their own module and registers a tracepoint hook to sched_wakeup. They were using ktime_get() for a time source, but it grabs a seq lock and caused a deadlock to occur. Link: http://lkml.kernel.org/r/1430406624-22609-1-git-send-email-jsnitsel@xxxxxxxxxx Signed-off-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> kernel/trace/trace_clock.c | 3 +++ 1 file changed, 3 insertions(+) commit 755a27e7e4c817dd51ade41668b380f26026899c Author: Nicolas Iooss <nicolas.iooss_linux@xxxxxxx> Date: Sun May 3 18:18:02 2015 +0800 tracing: remove unused ftrace_output_event() prototype The prototype of ftrace_output_event was added by commit 1d6bae966e90 ("tracing: Move raw output code from macro to standalone function") but this function was not defined anywhere, and is still nowhere to be found. Link: http://lkml.kernel.org/r/1430648282-25792-1-git-send-email-nicolas.iooss_linux@xxxxxxx Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@xxxxxxx> Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx> include/linux/ftrace_event.h | 3 --- 1 file changed, 3 deletions(-) -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
