commit 96a9b4d31eba4722ba7aad2cc15118a7799f499f
author Andrew Morton <akpm@osdl.org> Sat Mar 25 03:08:10 2006 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> Sat Mar 25 08:23:00 2006 -0800
tree f96739e328e3e50b43122e551a36415f6e26a1e8
parent 8630282070b4a52b12cfa514ba8558e2f3d56360

[PATCH] cpumask: uninline any_online_cpu()

           text    data     bss     dec     hex filename
before: 3605597 1363528  363328 5332453  515de5 vmlinux
after:  3605295 1363612  363200 5332107  515c8b vmlinux

218 bytes saved.

Also, optimise any_online_cpu() out of existence on CONFIG_SMP=n.

This function seems inefficient.  Can't we simply AND the two masks, then use
find_first_bit()?

Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

lib/cpumask.c

diff --git a/lib/cpumask.c b/lib/cpumask.c
index ea25a03..3a67dc5 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -31,3 +31,15 @@
 	return highest;
 }
 EXPORT_SYMBOL(highest_possible_processor_id);
+
+int __any_online_cpu(const cpumask_t *mask)
+{
+	int cpu;
+
+	for_each_cpu_mask(cpu, *mask) {
+		if (cpu_online(cpu))
+			break;
+	}
+	return cpu;
+}
+EXPORT_SYMBOL(__any_online_cpu);