[lkml]   [2002]   [Aug]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
SubjectRe: [PATCH] NUMA-Q disable irqbalance
> But this is exactly the kinds of cases that config options do 
> _not_ work well for.

OK ... you're right ;-) This is bad, especially for distribution
kernels. So I just need something to stop the NUMA-Q crashing.
Can I have the appended? Please, please, please? ;-)
It just adds an if switch to irq_balance which the compiler
optimises away anyway. Not a whiff of a config option.
Tested on 2.5.31.


diff -urN -X /home/mbligh/.diff.exclude 2.5.31-virgin/arch/i386/kernel/io_apic.c 2.5.31-irqbalance2/arch/i386/kernel/io_apic.c
--- 2.5.31-virgin/arch/i386/kernel/io_apic.c Sat Aug 10 18:41:26 2002
+++ 2.5.31-irqbalance2/arch/i386/kernel/io_apic.c Tue Aug 13 22:32:49 2002
@@ -251,6 +251,9 @@
irq_balance_t *entry = irq_balance + irq;
unsigned long now = jiffies;

+ if (clustered_apic_mode)
+ return;
if (entry->timestamp != now) {
unsigned long allowed_mask;
int random_number;

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:22    [W:0.126 / U:3.572 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site