Commit f42e7df3 authored Jun 30, 2014 by Rohit Vaswani Committed by Matt Wagantall May 30, 2015

ARM64: smp: fix incorrect per-cpu definition of regs_before_stop

The commit f3b4a40bc637a25c01c5ec66c825b4ddfc30328a introduced changes
to store CPU registers for all CPUs that handle IPI_CPU_STOP. The
structure to save the registers was intended to be a per-cpu variable.
However, the patch did not allocate a per-cpu structure and instead only
ended up providing a compiler per-cpu directive. Fix this bug by actually
defining a static per-cpu variable.

Change-Id: Iea7e52e91819f6f2c7f8d2c638545c0a68d2ef76
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>

parent d44e2ad7

arch/arm64/kernel/smp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -557,7 +557,7 @@ void arch_irq_work_raise(void)

		static DEFINE_RAW_SPINLOCK(stop_lock);

		static struct pt_regs __percpu regs_before_stop;
		DEFINE_PER_CPU(struct pt_regs, regs_before_stop);

		/*
		* ipi_cpu_stop - handle IPI from smp_send_stop()