Messages in this thread Patch in this message | | | Subject | [patch] kernel_flag is not needed on UP+preempt | From | Robert Love <> | Date | 12 Feb 2003 01:29:00 -0500 |
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There is no reason to define and declare the actual kernel_flag spinlock on UP systems, even if kernel preemption is enabled.
Preempt needs to use the lock_kernel() calls, but it does not need the actual lock to exist.
So change the check from SMP || PREEMPT to just SMP. Tests fine. Patch is against 2.5.60.
Robert Love
kernel/sched.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-)
diff -urN linux-2.5.60-mm1/kernel/sched.c linux/kernel/sched.c --- linux-2.5.60-mm1/kernel/sched.c 2003-02-12 00:28:51.788915192 -0500 +++ linux/kernel/sched.c 2003-02-12 00:29:10.539064736 -0500 @@ -2644,7 +2644,7 @@ #endif -#if CONFIG_SMP || CONFIG_PREEMPT +#if CONFIG_SMP /* * The 'big kernel lock' *
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