Messages in this thread Patch in this message | | | Date | Tue, 15 Jul 2008 14:14:33 -0700 | From | Mike Travis <> | Subject | [PATCH 4/8] cpumask: Optimize cpumask_of_cpu in drivers/misc/sgi-xp/xpc_main.c |
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* 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@elte.hu> Date: Tue Jul 15 14:55:17 2008 +0200
Signed-off-by: Mike Travis <travis@sgi.com> Cc: Dean Nelson <dcn@sgi.com> --- 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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