path: root/kernel/cpu.c
diff options
authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 10:46:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 10:46:27 -0700
commitda8347969f324db5f572581397d9b3a8e108cda4 (patch)
tree7df2ea8968ecb92e307bbffdbe8f9bcd0c79c36a /kernel/cpu.c
parent80749df4a1492004fdb7bd2cec094b92260c6d27 (diff)
parentc416ddf5b909736f5b57d348f5de159693e699ad (diff)
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/asm changes from Ingo Molnar: "The one change that stands out is the alternatives patching change that prevents us from ever patching back instructions from SMP to UP: this simplifies things and speeds up CPU hotplug. Other than that it's smaller fixes, cleanups and improvements." * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Unspaghettize do_trap() x86_64: Work around old GAS bug x86: Use REP BSF unconditionally x86: Prefer TZCNT over BFS x86/64: Adjust types of temporaries used by ffs()/fls()/fls64() x86: Drop unnecessary kernel_eflags variable on 64-bit x86/smp: Don't ever patch back to UP if we unplug cpus
Diffstat (limited to 'kernel/cpu.c')
1 files changed, 0 insertions, 11 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index e615dfbcf794..f560598807c1 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -447,14 +447,6 @@ EXPORT_SYMBOL_GPL(cpu_up);
static cpumask_var_t frozen_cpus;
-void __weak arch_disable_nonboot_cpus_begin(void)
-void __weak arch_disable_nonboot_cpus_end(void)
int disable_nonboot_cpus(void)
int cpu, first_cpu, error = 0;
@@ -466,7 +458,6 @@ int disable_nonboot_cpus(void)
* with the userspace trying to use the CPU hotplug at the same time
- arch_disable_nonboot_cpus_begin();
printk("Disabling non-boot CPUs ...\n");
for_each_online_cpu(cpu) {
@@ -482,8 +473,6 @@ int disable_nonboot_cpus(void)
- arch_disable_nonboot_cpus_end();
if (!error) {
BUG_ON(num_online_cpus() > 1);
/* Make sure the CPUs won't be enabled by someone else */

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