[MIPS] MT: Improved multithreading support.

    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index c66db5e5ab62..8b393df460a2 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -41,6 +41,10 @@
 #include <asm/elf.h>
 #include <asm/isadep.h>
 #include <asm/inst.h>
+#ifdef CONFIG_MIPS_MT_SMTC
+#include <asm/mipsmtregs.h>
+extern void smtc_idle_loop_hook(void);
+#endif /* CONFIG_MIPS_MT_SMTC */
 
 /*
  * The idle thread. There's no useful work to be done, so just try to conserve
@@ -51,9 +55,13 @@ ATTRIB_NORET void cpu_idle(void)
 {
         /* endless idle loop with no priority at all */
         while (1) {
-                while (!need_resched())
+                while (!need_resched()) {
+#ifdef CONFIG_MIPS_MT_SMTC
+                        smtc_idle_loop_hook();
+#endif /* CONFIG_MIPS_MT_SMTC */
                         if (cpu_wait)
                                 (*cpu_wait)();
+                }
                 preempt_enable_no_resched();
                 schedule();
                 preempt_disable();