Konrad Rzeszutek Wilk 95a7d76897 xen/mmu: Use Xen specific TLB flush instead of the generic one. ... As Mukesh explained it, the MMUEXT_TLB_FLUSH_ALL allows the hypervisor to do a TLB flush on all active vCPUs. If instead we were using the generic one (which ends up being xen_flush_tlb) we end up making the MMUEXT_TLB_FLUSH_LOCAL hypercall. But before we make that hypercall the kernel will IPI all of the vCPUs (even those that were asleep from the hypervisor perspective). The end result is that we needlessly wake them up and do a TLB flush when we can just let the hypervisor do it correctly. This patch gives around 50% speed improvement when migrating idle guest's from one host to another. Oracle-bug: 14630170 CC: stable@vger.kernel.org Tested-by: Jingjie Jiang <jingjie.jiang@oracle.com> Suggested-by: Mukesh Rathor <mukesh.rathor@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		2012-10-31 12:38:31 -04:00
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9p.h	net/9p: Convert net/9p protocol dumps to tracepoints	2011-10-24 11:13:12 -05:00
asoc.h	ASoC: dapm: Fix x86_64 build warning.	2012-04-23 13:15:35 +01:00
block.h	blktrace: add FLUSH/FUA support	2011-08-11 10:36:05 +02:00
btrfs.h	Btrfs: update delayed ref's tracepoints to show sequence	2012-10-01 15:19:17 -04:00
compaction.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
ext3.h	userns: Convert ext3 to use kuid/kgid where appropriate	2012-05-15 14:59:27 -07:00
ext4.h	ext4: add missing space to trace message	2012-08-17 09:52:17 -04:00
gfpflags.h	mm: remove __GFP_NO_KSWAPD	2012-10-09 16:22:15 +09:00
gpio.h	gpio: add trace events for setting direction and value	2011-05-20 00:40:19 -06:00
irq.h	rcu: Use softirq to address performance regression	2011-06-14 15:25:39 -07:00
jbd.h	jbd: Write journal superblock with WRITE_FUA after checkpointing	2012-05-15 23:34:37 +02:00
jbd2.h	jbd2: issue cache flush after checkpointing even with internal journal	2012-03-13 22:22:54 -04:00
kmem.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
kvm.h	KVM: Introduce __KVM_HAVE_IRQ_LINE	2012-06-18 16:06:35 +03:00
lock.h	tracing: Factorize lock events in a lock class	2010-05-09 13:45:35 +02:00
mce.h	tracing: Fix event alignment: mce:mce_record	2011-03-10 10:34:28 -05:00
module.h	include: replace linux/module.h with "struct module" wherever possible	2011-10-31 19:32:32 -04:00
napi.h	napi: Convert trace_napi_poll to TRACE_EVENT	2010-09-07 17:51:01 +02:00
net.h	net: tracepoint of net_dev_xmit sees freed skb and causes panic	2011-06-02 14:06:31 -07:00
oom.h	tracepoint: add tracepoints for debugging oom_score_adj	2012-01-10 16:30:44 -08:00
power.h	PM / Sleep: Add wakeup_source_activate and wakeup_source_deactivate tracepoints	2012-05-01 21:25:25 +02:00
printk.h	printk/tracing: Add console output tracing	2012-02-13 13:46:05 -05:00
random.h	random: add tracepoints for easier debugging and verification	2012-07-14 20:17:48 -04:00
rcu.h	rcu: Add tracing for _rcu_barrier()	2012-07-02 12:33:23 -07:00
regmap.h	The following text was taken from the original review request:	2012-03-24 10:41:37 -07:00
regulator.h	regulator: Add basic trace facilities	2011-01-12 14:33:00 +00:00
rpm.h	device.h: audit and cleanup users in main include dir	2012-03-16 10:38:24 -04:00
sched.h	perf/trace: Add ability to set a target task for events	2012-07-31 17:02:05 +02:00
scsi.h	[SCSI] Include protection operation in SCSI command trace	2011-03-14 18:36:02 -05:00
signal.h	tracing: let trace_signal_generate() report more info, kill overflow_fail/lose_info	2012-01-13 18:48:50 +01:00
skb.h	tracing: Fix event alignment: skb:kfree_skb	2011-03-10 10:34:31 -05:00
sock.h	core: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
sunrpc.h	SUNRPC: Adding status trace points	2012-02-06 10:37:53 -05:00
syscalls.h	tracing: Allow raw syscall trace events for non privileged users	2010-11-18 14:37:43 +01:00
task.h	tracepoint: add tracepoints for debugging oom_score_adj	2012-01-10 16:30:44 -08:00
timer.h	tracing: Fix timer tracing	2010-08-19 13:00:41 +02:00
udp.h	udp: add tracepoints for queueing skb to rcvbuf	2011-06-21 16:06:10 -07:00
vmscan.h	UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers	2012-10-02 18:01:25 +01:00
workqueue.h	workqueue: factor out worker_pool from global_cwq	2012-07-12 14:46:37 -07:00
writeback.h	writeback: Move requeueing when I_SYNC set to writeback_sb_inodes()	2012-05-06 13:43:38 +08:00
xen.h	xen/mmu: Use Xen specific TLB flush instead of the generic one.	2012-10-31 12:38:31 -04:00