MIPS: call set_cpu_online() on cpu being brought up with irq disabled
To prevent a problem as commit 5fbd036b [sched: Cleanup cpu_active madness]
and commit 2baab4e9 [sched: Fix select_fallback_rq() vs cpu_active/cpu_online]
try to resolve, move set_cpu_online() to the brought up CPU and with irq
disabled.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: David Daney <david.daney@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/3851/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index b181bbf..eb3e2b1 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -122,6 +122,8 @@
notify_cpu_starting(cpu);
+ set_cpu_online(cpu, true);
+
set_cpu_sibling_map(cpu);
cpu_set(cpu, cpu_callin_map);
@@ -197,8 +199,6 @@
while (!cpu_isset(cpu, cpu_callin_map))
udelay(100);
- set_cpu_online(cpu, true);
-
return 0;
}