[uml-devel] [PATCH] load ave >= 1

[uml-devel] [PATCH] load ave >= 1

[Jeff Dike]

The patch below might fix the ksoftirqd load average >= 1 problem.

I can't reproduce it, but in chasing it in one of Chris Aker's
non-debuggable images, I uncovered this bug.

Testing and feedback are welcome.

It's applied against my incrementals, but it should be easy to apply
in any other UML.

				Jeff

Index: linux-2.6.12/arch/um/kernel/time_kern.c
===================================================================
--- linux-2.6.12.orig/arch/um/kernel/time_kern.c	2005-07-26 16:46:19.000000000 -0400
+++ linux-2.6.12/arch/um/kernel/time_kern.c	2005-07-26 18:46:09.000000000 -0400
@@ -189,8 +189,10 @@
 void timer_handler(int sig, union uml_pt_regs *regs)
 {
 	local_irq_disable();
+	irq_enter();
 	update_process_times(CHOOSE_MODE(user_context(UPT_SP(regs)), 
 					 (regs)->skas.is_user));
+	irq_exit();
 	local_irq_enable();
 	if(current_thread->cpu == 0)
 		timer_irq(regs);


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Re: [uml-devel] [PATCH] load ave >= 1

[Christopher S. Aker]

Jeff Dike wrote:
> Testing and feedback are welcome.

Looks good here!

Cpu(s):  0.0% us,  0.0% sy,  0.0% ni, 100.0% id,  0.0% wa,  0.0% hi, 
0.0% si

Thanks,
-Chris


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