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SubjectRe: [patch V3 28/32] s390: Prevent hotplug rwsem recursion
On Wed, May 24, 2017 at 10:15:39AM +0200, Thomas Gleixner wrote:
> The text patching functions which are invoked from jump_label and kprobes
> code are protected against cpu hotplug at the call sites.
>
> Use stop_machine_cpuslocked() to avoid recursion on the cpu hotplug
> rwsem. stop_machine_cpuslocked() contains a lockdep assertion to catch any
> unprotected callers.
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Cc: linux-s390@vger.kernel.org
> ---
> arch/s390/kernel/jump_label.c | 2 +-
> arch/s390/kernel/kprobes.c | 4 ++--
> 2 files changed, 3 insertions(+), 3 deletions(-)

Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>

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