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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/kernel/smp-mt.c
parent68923cdc2eb34124d77bc27f7945d7ff16b236dd (diff)
downloadop-kernel-dev-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.zip
op-kernel-dev-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.tar.gz
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/kernel/smp-mt.c')
-rw-r--r--arch/mips/kernel/smp-mt.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 5a7b585..30415a7 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -152,7 +152,7 @@ static void vsmp_smp_finish(void)
* (unsigned long)idle->thread_info the gp
* assumes a 1:1 mapping of TC => VPE
*/
-static void vsmp_boot_secondary(int cpu, struct task_struct *idle)
+static int vsmp_boot_secondary(int cpu, struct task_struct *idle)
{
struct thread_info *gp = task_thread_info(idle);
dvpe();
@@ -184,6 +184,8 @@ static void vsmp_boot_secondary(int cpu, struct task_struct *idle)
clear_c0_mvpcontrol(MVPCONTROL_VPC);
evpe(EVPE_ENABLE);
+
+ return 0;
}
/*
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