diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2017-08-12 19:49:40 -0700 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2017-08-30 00:57:27 +0200 |
| commit | d595d423d06071bd7a4892c3c2f16bfe1d5b3a85 (patch) | |
| tree | babe4bf15082b7528e8c316dc0ec8630b0e24df9 /arch/mips/loongson64 | |
| parent | 68923cdc2eb34124d77bc27f7945d7ff16b236dd (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/loongson64')
| -rw-r--r-- | arch/mips/loongson64/loongson-3/smp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c index bde64b0f1e47..8501109bb0f0 100644 --- a/arch/mips/loongson64/loongson-3/smp.c +++ b/arch/mips/loongson64/loongson-3/smp.c @@ -400,7 +400,7 @@ static void __init loongson3_prepare_cpus(unsigned int max_cpus) /* * Setup the PC, SP, and GP of a secondary processor and start it runing! */ -static void loongson3_boot_secondary(int cpu, struct task_struct *idle) +static int loongson3_boot_secondary(int cpu, struct task_struct *idle) { unsigned long startargs[4]; @@ -423,6 +423,7 @@ static void loongson3_boot_secondary(int cpu, struct task_struct *idle) (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x8)); loongson3_ipi_write64(startargs[0], (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x0)); + return 0; } #ifdef CONFIG_HOTPLUG_CPU |