q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/include/trace/events
History
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
..
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