Ashok Raj 884d9e40b4 [PATCH] x86_64: Dont use broadcast shortcut to make it cpu hotplug safe. ... Broadcast IPI's provide un-expected behaviour for cpu hotplug. CPU's in offline state also end up receiving the IPI. Once the cpus become online they receive these stale IPI's which are bad and introduce unexpected behaviour. This is easily avoided by not sending a broadcast and addressing just the CPU's in online map. Doing prelim cycle counts it appears there is no big overhead and numbers seem around 0x3000-0x3900 on an average on x86 and x86_64 systems with CPUS running 3G, both for broadcast and mask version of the API's. The shortcuts are useful only for flat mode (where the perf shows no degradation), and in cluster mode, its unicast anyway. Its simpler to just not use broadcast anymore. Signed-off-by: Ashok Raj <ashok.raj@intel.com> Acked-by: Andi Kleen <ak@muc.de> Acked-by: Zwane Mwaikambo <zwane@arm.linux.org.uk> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2005-06-25 16:24:31 -07:00
..
acpi
asm-alpha	[PATCH] remove non-DISCONTIG use of pgdat->node_mem_map	2005-06-23 09:45:00 -07:00
asm-arm	[PATCH] ARM: Generic Dynamic Tick Timer support for ARM, take 4	2005-06-25 19:39:45 +01:00
asm-arm26	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-cris	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-frv	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-generic	[PATCH] adjust per_cpu definition in non-SMP case	2005-06-23 09:45:28 -07:00
asm-h8300	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-i386	[PATCH] make smp_prepare_cpu to a weak function	2005-06-25 16:24:30 -07:00
asm-ia64	[IA64] Fix pfn_to_nid() so the kernel compiles again for !CONFIG_DISCONTIGMEM.	2005-06-23 14:52:51 -07:00
asm-m32r	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-m68k	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-m68knommu	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-mips	[PATCH] mips: add MIPS-specific support for flatmem/discontigmem	2005-06-25 16:24:25 -07:00
asm-parisc	[PATCH] compat: introduce compat_time_t	2005-06-23 09:45:32 -07:00
asm-ppc	[PATCH] ppc32: Remove FSL OCP support	2005-06-25 16:24:27 -07:00
asm-ppc64	Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/paulus/ppc64-2.6	2005-06-23 09:49:55 -07:00
asm-s390	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-sh	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-sh64	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-sparc	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-sparc64	[SPARC64]: Report any user access faults in termios accessors.	2005-06-24 20:11:03 -07:00
asm-um	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-v850	[PATCH] streamline preempt_count type across archs	2005-06-23 09:45:19 -07:00
asm-x86_64	[PATCH] x86_64: Dont use broadcast shortcut to make it cpu hotplug safe.	2005-06-25 16:24:31 -07:00
asm-xtensa	[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8	2005-06-24 00:05:22 -07:00
linux	[PATCH] x86_64: Change init sections for CPU hotplug support	2005-06-25 16:24:30 -07:00
math-emu
media	[PATCH] v4l: update for SAA7134 cards	2005-06-24 00:06:39 -07:00
mtd
net	Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2005-06-24 00:31:46 -07:00
pcmcia	[PATCH] yenta TI: turn off interrupts during card power-on #2	2005-06-23 09:45:31 -07:00
rxrpc
scsi	[PATCH] I2O: Adaptec specific SG_IO access, firmware access through sysfs and 2400A workaround	2005-06-24 00:05:28 -07:00
sound	[PATCH] create a kstrdup library function	2005-06-23 09:45:18 -07:00
video