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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/sgi-ip27/ip27-smp.c
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/sgi-ip27/ip27-smp.c')
-rw-r--r--arch/mips/sgi-ip27/ip27-smp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 85ee974a1582..545446dfe7fa 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -195,7 +195,7 @@ static void ip27_smp_finish(void)
* set sp to the kernel stack of the newly created idle process, gp to the proc
* struct so that current_thread_info() will work.
*/
-static void ip27_boot_secondary(int cpu, struct task_struct *idle)
+static int ip27_boot_secondary(int cpu, struct task_struct *idle)
{
unsigned long gp = (unsigned long)task_thread_info(idle);
unsigned long sp = __KSTK_TOS(idle);
@@ -203,6 +203,7 @@ static void ip27_boot_secondary(int cpu, struct task_struct *idle)
LAUNCH_SLAVE(cputonasid(cpu), cputoslice(cpu),
(launch_proc_t)MAPPED_KERN_RW_TO_K0(smp_bootstrap),
0, (void *) sp, (void *) gp);
+ return 0;
}
static void __init ip27_smp_setup(void)