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authorAndrew Morton <akpm@osdl.org>2006-03-25 03:08:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:22:59 -0800
commitccb46000f4bb459777686611157ac0eac928704e (patch)
tree461e956d9e27a7afa7de64950f3186070ffa61f5
parent64b91379439ff0fb007bde90eb496299c14a9b2a (diff)
downloadop-kernel-dev-ccb46000f4bb459777686611157ac0eac928704e.zip
op-kernel-dev-ccb46000f4bb459777686611157ac0eac928704e.tar.gz
[PATCH] cpumask: uninline first_cpu()
text data bss dec hex filename before: 3490577 1322408 360000 5172985 4eeef9 vmlinux after: 3488027 1322496 360128 5170651 4ee5db vmlinux Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/linux/cpumask.h11
-rw-r--r--lib/Makefile2
-rw-r--r--lib/cpumask.c11
3 files changed, 19 insertions, 5 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 60e56c6..9b702fd 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -212,11 +212,12 @@ static inline void __cpus_shift_left(cpumask_t *dstp,
bitmap_shift_left(dstp->bits, srcp->bits, n, nbits);
}
-#define first_cpu(src) __first_cpu(&(src), NR_CPUS)
-static inline int __first_cpu(const cpumask_t *srcp, int nbits)
-{
- return min_t(int, nbits, find_first_bit(srcp->bits, nbits));
-}
+#ifdef CONFIG_SMP
+int __first_cpu(const cpumask_t *srcp);
+#define first_cpu(src) __first_cpu(&(src))
+#else
+#define first_cpu(src) 0
+#endif
#define next_cpu(n, src) __next_cpu((n), &(src), NR_CPUS)
static inline int __next_cpu(int n, const cpumask_t *srcp, int nbits)
diff --git a/lib/Makefile b/lib/Makefile
index 648b2c1..f827e3c 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -7,6 +7,8 @@ lib-y := errno.o ctype.o string.o vsprintf.o cmdline.o \
idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
sha1.o
+lib-$(CONFIG_SMP) += cpumask.o
+
lib-y += kobject.o kref.o kobject_uevent.o klist.o
obj-y += sort.o parser.o halfmd4.o iomap_copy.o
diff --git a/lib/cpumask.c b/lib/cpumask.c
new file mode 100644
index 0000000..1560d97
--- /dev/null
+++ b/lib/cpumask.c
@@ -0,0 +1,11 @@
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/cpumask.h>
+#include <linux/module.h>
+
+int __first_cpu(const cpumask_t *srcp)
+{
+ return min_t(int, NR_CPUS, find_first_bit(srcp->bits, NR_CPUS));
+}
+EXPORT_SYMBOL(__first_cpu);
+
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