Re: [PATCH] reduce sizeof(percpu_data) and removes dependance against NR_CPUS

Jan Engelhardt a écrit :

--- linux-2.6.15/include/linux/percpu.h	2006-01-03 04:21:10.000000000 +0100
+++ linux-2.6.15-edum/include/linux/percpu.h	2006-01-05 14:45:48.000000000 +0100
@@ -18,8 +18,7 @@
 #ifdef CONFIG_SMP

struct percpu_data {

-	void *ptrs[NR_CPUS];
-	void *blkp;
+	void *ptrs[1]; /* real size depends on highest_possible_processor_id() */
 };

/*

I think we can use *ptrs[0] here.

Or even dont change percpu.h, or else some guys will assume percpu_data cost nothing...

Eric
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---

• References:
  • Re: [PATCH] Debug shared irqs.
    • From: Andrew Morton <[email protected]>
  • [PATCH] reduce sizeof(percpu_data) and removes dependance against NR_CPUS
    • From: Eric Dumazet <[email protected]>
  • Re: [PATCH] reduce sizeof(percpu_data) and removes dependance against NR_CPUS
    • From: Jan Engelhardt <[email protected]>

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