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| 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/kernel/smp-cps.c | |
| parent | 68923cdc2eb34124d77bc27f7945d7ff16b236dd (diff) | |
| download | lwn-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.tar.gz lwn-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.zip | |
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-cps.c')
| -rw-r--r-- | arch/mips/kernel/smp-cps.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c index 7aac84ffc2af..4a4a25c722f1 100644 --- a/arch/mips/kernel/smp-cps.c +++ b/arch/mips/kernel/smp-cps.c @@ -288,7 +288,7 @@ static void remote_vpe_boot(void *dummy) mips_cps_boot_vpes(core_cfg, cpu_vpe_id(¤t_cpu_data)); } -static void cps_boot_secondary(int cpu, struct task_struct *idle) +static int cps_boot_secondary(int cpu, struct task_struct *idle) { unsigned core = cpu_core(&cpu_data[cpu]); unsigned vpe_id = cpu_vpe_id(&cpu_data[cpu]); @@ -346,6 +346,7 @@ static void cps_boot_secondary(int cpu, struct task_struct *idle) mips_cps_boot_vpes(core_cfg, vpe_id); out: preempt_enable(); + return 0; } static void cps_init_secondary(void) |