kernel_optimize_test/arch/x86_64
Zwane Mwaikambo 329d400f47 [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI
I noticed that some lowlevel send_IPI_mask helpers had a hotplug/preempt
race whereupon the cpu_online_map was read before disabling preemption;

...
cpumask_t mask = cpu_online_map;
int cpu = get_cpu();
cpu_clear(cpu, mask);
...

But then i realised that there is no need for these lowlevel functions to
be going through all this trouble when all the callers are already made
hotplug/preempt safe.

Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 19:01:57 -08:00
..
boot Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2006-01-10 08:21:33 -08:00
crypto [CRYPTO] Allow AES C/ASM implementations to coexist 2006-01-09 14:15:39 -08:00
ia32 [PATCH] x86_64: More CFI fixes for 32bit entry code 2006-01-11 19:01:09 -08:00
kernel [PATCH] x86_64/i386: Remove preempt disable calls in lowlevel IPI 2006-01-11 19:01:57 -08:00
lib [PATCH] x86_64: Remove optimization for B stepping AMD K8 2005-11-14 19:55:17 -08:00
mm [PATCH] x86_64: Adjust page fault handling 2006-01-11 19:01:11 -08:00
oprofile [PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu 2005-11-07 07:53:35 -08:00
pci [PATCH] Fix build with CONFIG_PCI_MMCONFIG 2005-12-20 10:41:57 -08:00
defconfig [PATCH] x86_64: Update defconfig 2006-01-11 19:01:09 -08:00
Kconfig [PATCH] kexec: change CONFIG_PHYSICAL_START dependency 2006-01-10 08:01:29 -08:00
Kconfig.debug [PATCH] x86/x86_64: mark rodata section read-only: x86-64 support 2006-01-06 08:33:36 -08:00
Makefile [PATCH] x86_64: Separate CONFIG_UNWIND_INFO from CONFIG_DEBUG_INFO 2006-01-11 19:01:10 -08:00