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| author | Sebastian Andrzej Siewior | 2017-05-24 10:15:22 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2017-05-26 10:10:39 +0200 |
| commit | e560c89c8ac0baadf0da351f602c599016568fc7 (patch) | |
| tree | ce94bd27e0b9186ba618b44c71b47505ab09582d /drivers/hwtracing/coresight/coresight-etm4x.c | |
| parent | KVM/PPC/Book3S HV: Use cpuhp_setup_state_nocalls_cpuslocked() (diff) | |
| download | kernel-qcow2-linux-e560c89c8ac0baadf0da351f602c599016568fc7.tar.gz kernel-qcow2-linux-e560c89c8ac0baadf0da351f602c599016568fc7.tar.xz kernel-qcow2-linux-e560c89c8ac0baadf0da351f602c599016568fc7.zip | |
hwtracing/coresight-etm3x: Use cpuhp_setup_state_nocalls_cpuslocked()
etm_probe() holds get_online_cpus() while invoking
cpuhp_setup_state_nocalls().
cpuhp_setup_state_nocalls() invokes get_online_cpus() as well. This is
correct, but prevents the conversion of the hotplug locking to a percpu
rwsem.
Use cpuhp_setup_state_nocalls_cpuslocked() to avoid the nested
call. Convert *_online_cpus() to the new interfaces while at it.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20170524081547.889092478@linutronix.de
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm4x.c')
0 files changed, 0 insertions, 0 deletions