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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:05:12 +1030 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:05:12 +1030 |
| commit | 278d1ed65e25d80af7c3a112d707b3f70516ddb4 (patch) | |
| tree | 633c75759731d5e1c2a0fb7d4c187bc3782c6285 /include/linux/threads.h | |
| parent | 33edcf133ba93ecba2e4b6472e97b689895d805c (diff) | |
| download | op-kernel-dev-278d1ed65e25d80af7c3a112d707b3f70516ddb4.zip op-kernel-dev-278d1ed65e25d80af7c3a112d707b3f70516ddb4.tar.gz | |
cpumask: make CONFIG_NR_CPUS always valid.
Impact: cleanup
Currently we have NR_CPUS, which is 1 on UP, and CONFIG_NR_CPUS on
SMP. If we make CONFIG_NR_CPUS always valid (and always 1 on !SMP),
we can skip the middleman.
This also allows us to find and check all the unaudited NR_CPUS usage
as we prepare for v. large NR_CPUS.
To avoid breaking every arch, we cheat and do this for the moment
in the header if the arch doesn't.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Diffstat (limited to 'include/linux/threads.h')
| -rw-r--r-- | include/linux/threads.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/include/linux/threads.h b/include/linux/threads.h index 38d1a5d..052b12b 100644 --- a/include/linux/threads.h +++ b/include/linux/threads.h @@ -8,17 +8,17 @@ */ /* - * Maximum supported processors that can run under SMP. This value is - * set via configure setting. The maximum is equal to the size of the - * bitmasks used on that platform, i.e. 32 or 64. Setting this smaller - * saves quite a bit of memory. + * Maximum supported processors. Setting this smaller saves quite a + * bit of memory. Use nr_cpu_ids instead of this except for static bitmaps. */ -#ifdef CONFIG_SMP -#define NR_CPUS CONFIG_NR_CPUS -#else -#define NR_CPUS 1 +#ifndef CONFIG_NR_CPUS +/* FIXME: This should be fixed in the arch's Kconfig */ +#define CONFIG_NR_CPUS 1 #endif +/* Places which use this should consider cpumask_var_t. */ +#define NR_CPUS CONFIG_NR_CPUS + #define MIN_THREADS_LEFT_FOR_ROOT 4 /* |
