summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2020-08-20 10:13:30 +0300
committerPeter Zijlstra <peterz@infradead.org>2020-08-26 13:41:53 +0300
commitfddf9055a60dfcc97bda5ef03c8fa4108ed555c5 (patch)
tree5909759ef3729f2ef425cee2b1b33e483a48954c /drivers
parentd012a7190fc1fd72ed48911e77ca97ba4521bccd (diff)
downloadlinux-fddf9055a60dfcc97bda5ef03c8fa4108ed555c5.tar.xz
lockdep: Use raw_cpu_*() for per-cpu variables
Sven reported that commit a21ee6055c30 ("lockdep: Change hardirq{s_enabled,_context} to per-cpu variables") caused trouble on s390 because their this_cpu_*() primitives disable preemption which then lands back tracing. On the one hand, per-cpu ops should use preempt_*able_notrace() and raw_local_irq_*(), on the other hand, we can trivialy use raw_cpu_*() ops for this. Fixes: a21ee6055c30 ("lockdep: Change hardirq{s_enabled,_context} to per-cpu variables") Reported-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Marco Elver <elver@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200821085348.192346882@infradead.org
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions