Messages in this thread | | | Date | Mon, 25 Apr 2022 13:39:38 +0200 | From | Heiko Carstens <> | Subject | Re: [PATCHv2] s390/irq: utilize RCU instead of irq_lock_sparse() in show_msi_interrupt() |
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On Fri, Apr 22, 2022 at 06:02:12PM +0800, Pingfan Liu wrote: > As demonstrated by commit 74bdf7815dfb ("genirq: Speedup show_interrupts()"), > irq_desc can be accessed safely in RCU read section. > > Hence here resorting to rcu read lock to get rid of irq_lock_sparse(). > > Signed-off-by: Pingfan Liu <kernelfans@gmail.com> > Cc: Heiko Carstens <hca@linux.ibm.com> > Cc: Vasily Gorbik <gor@linux.ibm.com> > Cc: Alexander Gordeev <agordeev@linux.ibm.com> > Cc: Christian Borntraeger <borntraeger@linux.ibm.com> > Cc: Sven Schnelle <svens@linux.ibm.com> > Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> > Cc: linux-kernel@vger.kernel.org > To: linux-s390@vger.kernel.org > > --- > arch/s390/kernel/irq.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-)
Applied, thanks!
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