path: root/init/main.c
diff options
authorAndrew Morton <>2006-03-26 01:37:32 -0800
committerLinus Torvalds <>2006-03-26 08:56:57 -0800
commit9a98e2f7326d626d75cab2fe108c34b733227918 (patch)
treede27536a7865162c9664187fa3e0bf6e10db242e /init/main.c
parent222b9f933a76b127a073f45278d2b0199587e8ce (diff)
[PATCH] remove fixup_cpu_present_map()
Since the addition of boot_cpu_init(), fixup_cpu_present_map() has been a no-op. That's because fixup_cpu_present_map() won't touch cpu_present_map if it has any bits set, and boot_cpu_init() sets a bit. So remove fixup_cpu_present_map(). A consequence of this (actually of the boot_cpu_init() change) is that the architecture _must_ populate cpu_present_map itself (probably in smp_prepare_cpus()). fixup_cpu_present_map() won't do it any more. If the architecture doesn't do this, it'll only bring up a single CPU. The other side effect (though less serious) is that smp_prepare_boot_cpu() no longer needs to mark the boot cpu in the online and present maps - boot_cpu_init() does that for everyone (to make early printks work). Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'init/main.c')
1 files changed, 0 insertions, 19 deletions
diff --git a/init/main.c b/init/main.c
index 006dcd547dc2..64466ea1984c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -645,24 +645,6 @@ static void run_init_process(char *init_filename)
execve(init_filename, argv_init, envp_init);
-static inline void fixup_cpu_present_map(void)
-#ifdef CONFIG_SMP
- int i;
- /*
- * If arch is not hotplug ready and did not populate
- * cpu_present_map, just make cpu_present_map same as cpu_possible_map
- * for other cpu bringup code to function as normal. e.g smp_init() etc.
- */
- if (cpus_empty(cpu_present_map)) {
- for_each_cpu(i) {
- cpu_set(i, cpu_present_map);
- }
- }
static int init(void * unused)
@@ -684,7 +666,6 @@ static int init(void * unused)
- fixup_cpu_present_map();