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authorPaul Burton <paul.burton@imgtec.com>2017-08-12 19:49:40 -0700
committerRalf Baechle <ralf@linux-mips.org>2017-08-30 00:57:27 +0200
commitd595d423d06071bd7a4892c3c2f16bfe1d5b3a85 (patch)
treebabe4bf15082b7528e8c316dc0ec8630b0e24df9 /arch/mips/paravirt
parent68923cdc2eb34124d77bc27f7945d7ff16b236dd (diff)
MIPS: SMP: Allow boot_secondary SMP op to return errors
Allow the boot_secondary SMP op to return an error to __cpu_up(), which will in turn return it to its caller. This will allow SMP implementations to return errors quickly in cases they they know have failed, rather than relying upon __cpu_up() eventually timing out waiting for the cpu_running completion. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17014/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/paravirt')
-rw-r--r--arch/mips/paravirt/paravirt-smp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/paravirt/paravirt-smp.c b/arch/mips/paravirt/paravirt-smp.c
index b61b26ccf601..107d9f90d668 100644
--- a/arch/mips/paravirt/paravirt-smp.c
+++ b/arch/mips/paravirt/paravirt-smp.c
@@ -100,11 +100,12 @@ static void paravirt_smp_finish(void)
local_irq_enable();
}
-static void paravirt_boot_secondary(int cpu, struct task_struct *idle)
+static int paravirt_boot_secondary(int cpu, struct task_struct *idle)
{
paravirt_smp_gp[cpu] = (unsigned long)task_thread_info(idle);
smp_wmb();
paravirt_smp_sp[cpu] = __KSTK_TOS(idle);
+ return 0;
}
static irqreturn_t paravirt_reched_interrupt(int irq, void *dev_id)