[PATCH 4/8] cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c

[Mike Travis]

  * Optimize various places where a pointer to the cpumask_of_cpu value
    will result in reducing stack pressure.

Based on linux-2.6.tip/master at the following commit:

    commit 0a91813e16ebd5c2d9b5c2acd5b7c91742112c4f
    Merge: 9a635fa... 724dce0...
    Author: Ingo Molnar <mingo@xxxxxxx>
    Date:   Tue Jul 15 14:55:17 2008 +0200

Signed-off-by: Mike Travis <travis@xxxxxxx>
Cc: Dean Nelson <dcn@xxxxxxx>
---
 drivers/misc/sgi-xp/xpc_main.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.tip.orig/drivers/misc/sgi-xp/xpc_main.c
+++ linux-2.6.tip/drivers/misc/sgi-xp/xpc_main.c
@@ -229,10 +229,11 @@ xpc_hb_checker(void *ignore)
 	int last_IRQ_count = 0;
 	int new_IRQ_count;
 	int force_IRQ = 0;
+	cpumask_of_cpu_ptr(cpumask, XPC_HB_CHECK_CPU);
 
 	/* this thread was marked active by xpc_hb_init() */
 
-	set_cpus_allowed(current, cpumask_of_cpu(XPC_HB_CHECK_CPU));
+	set_cpus_allowed_ptr(current, cpumask);
 
 	/* set our heartbeating to other partitions into motion */
 	xpc_hb_check_timeout = jiffies + (xpc_hb_check_interval * HZ);

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