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[PATCH] Convert highest_possible_processor_id to nr_cpu_ids

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We frequently need the maximum number of possible processors in order to
allocate arrays for all processors.  So far this was done using
highest_possible_processor_id().  However, we do need the number of
processors not the highest id.  Moreover the number was so far dynamically
calculated on each invokation.  The number of possible processors does not
change when the system is running.  We can therefore calculate that number
once.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Lameter 2007-02-20 13:57:51 -08:00 • committed by Linus Torvalds
parent 74c7aa8b85
commit 53b8a315b7
5 changed files with 17 additions and 29 deletions
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4
include/linux/cpumask.h
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@ -398,11 +398,11 @@ extern cpumask_t cpu_present_map;
#endif
#ifdef CONFIG_SMP
int highest_possible_processor_id(void);
extern int nr_cpu_ids;
#define any_online_cpu(mask) __any_online_cpu(&(mask))
int __any_online_cpu(const cpumask_t *mask);
#else
#define highest_possible_processor_id() 0
#define nr_cpu_ids 1
#define any_online_cpu(mask) 0
#endif