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
net/9p: Convert net/9p protocol dumps to tracepoints
2011-10-24 11:13:12 -05:00
ASoC: dapm: Fix x86_64 build warning.
2012-04-23 13:15:35 +01:00
blktrace: add FLUSH/FUA support
2011-08-11 10:36:05 +02:00
Btrfs: update delayed ref's tracepoints to show sequence
2012-10-01 15:19:17 -04:00
UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
2012-10-02 18:01:25 +01:00
userns: Convert ext3 to use kuid/kgid where appropriate
2012-05-15 14:59:27 -07:00
ext4: add missing space to trace message
2012-08-17 09:52:17 -04:00
mm: remove __GFP_NO_KSWAPD
2012-10-09 16:22:15 +09:00
gpio: add trace events for setting direction and value
2011-05-20 00:40:19 -06:00
rcu: Use softirq to address performance regression
2011-06-14 15:25:39 -07:00
jbd: Write journal superblock with WRITE_FUA after checkpointing
2012-05-15 23:34:37 +02:00
jbd2: issue cache flush after checkpointing even with internal journal
2012-03-13 22:22:54 -04:00
UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
2012-10-02 18:01:25 +01:00
KVM: Introduce __KVM_HAVE_IRQ_LINE
2012-06-18 16:06:35 +03:00
tracing: Factorize lock events in a lock class
2010-05-09 13:45:35 +02:00
tracing: Fix event alignment: mce:mce_record
2011-03-10 10:34:28 -05:00
include: replace linux/module.h with "struct module" wherever possible
2011-10-31 19:32:32 -04:00
napi: Convert trace_napi_poll to TRACE_EVENT
2010-09-07 17:51:01 +02:00
net: tracepoint of net_dev_xmit sees freed skb and causes panic
2011-06-02 14:06:31 -07:00
tracepoint: add tracepoints for debugging oom_score_adj
2012-01-10 16:30:44 -08:00
PM / Sleep: Add wakeup_source_activate and wakeup_source_deactivate tracepoints
2012-05-01 21:25:25 +02:00
printk/tracing: Add console output tracing
2012-02-13 13:46:05 -05:00
random: add tracepoints for easier debugging and verification
2012-07-14 20:17:48 -04:00
rcu: Add tracing for _rcu_barrier()
2012-07-02 12:33:23 -07:00
The following text was taken from the original review request:
2012-03-24 10:41:37 -07:00
regulator: Add basic trace facilities
2011-01-12 14:33:00 +00:00
device.h: audit and cleanup users in main include dir
2012-03-16 10:38:24 -04:00
perf/trace: Add ability to set a target task for events
2012-07-31 17:02:05 +02:00
[SCSI] Include protection operation in SCSI command trace
2011-03-14 18:36:02 -05:00
tracing: let trace_signal_generate() report more info, kill overflow_fail/lose_info
2012-01-13 18:48:50 +01:00
tracing: Fix event alignment: skb:kfree_skb
2011-03-10 10:34:31 -05:00
core: add tracepoints for queueing skb to rcvbuf
2011-06-21 16:06:10 -07:00
SUNRPC: Adding status trace points
2012-02-06 10:37:53 -05:00
tracing: Allow raw syscall trace events for non privileged users
2010-11-18 14:37:43 +01:00
tracepoint: add tracepoints for debugging oom_score_adj
2012-01-10 16:30:44 -08:00
tracing: Fix timer tracing
2010-08-19 13:00:41 +02:00
udp: add tracepoints for queueing skb to rcvbuf
2011-06-21 16:06:10 -07:00
UAPI: (Scripted) Convert #include "..." to #include <path/...> in kernel system headers
2012-10-02 18:01:25 +01:00
workqueue: factor out worker_pool from global_cwq
2012-07-12 14:46:37 -07:00
writeback: Move requeueing when I_SYNC set to writeback_sb_inodes()
2012-05-06 13:43:38 +08:00
xen/mmu: Use Xen specific TLB flush instead of the generic one.
2012-10-31 12:38:31 -04:00
95a7d76897