RE: [PATCH] armpmu: broadcast overflow irq on multi-core system having one muxed SPI for PMU.

Thank you for the reply. > -Original Message- > From: Mark Rutland [mailto:mark.rutl...@arm.com] > Sent: Thursday, May 10, 2018 7:21 PM > To: Hoeun Ryu > Cc: Will Deacon ; Hoeun Ryu ; > linux-arm-ker...@lists.infradead.org; linux-kernel@vger.kernel.org > Subject: Re: [PATCH] armpmu: broad

smp_call_function() friends and irq/bottom_half context

Hi, all. I'm reading kernel/smp.c code and I found comments on smp_call_function() and smp_call_function_[single/many] saying that these functions are cannot be called in interrupt disabled context or irq/bottom half handlers. I understand that there is a potential deadlock issue when caller CPU