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linux-stable/arch/mips
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Paolo Bonzini 62bea5bff4 KVM: add halt_attempted_poll to VCPU stats 
This new statistic can help diagnosing VCPUs that, for any reason,
trigger bad behavior of halt_poll_ns autotuning.

For example, say halt_poll_ns = 480000, and wakeups are spaced exactly
like 479us, 481us, 479us, 481us. Then KVM always fails polling and wastes
10+20+40+80+160+320+480 = 1110 microseconds out of every
479+481+479+481+479+481+479 = 3359 microseconds. The VCPU then
is consuming about 30% more CPU than it would use without
polling.  This would show as an abnormally high number of
attempted polling compared to the successful polls.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com<
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-16 12:17:00 +02:00
..
alchemy Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
ar7 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
ath25 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-07-01 15:19:35 -07:00
ath79 MIPS: ath79: Move the GPIO driver to drivers/gpio 2015-09-03 12:08:02 +02:00
bcm47xx Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
bcm63xx MIPS: bcm63xx: Use irq_set_handler_locked() 2015-08-26 15:23:29 +02:00
bmips mips/irq: prepare for drivers/irqchip/irqchip.h removal 2015-07-31 20:51:21 +02:00
boot lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
cavium-octeon dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} 2015-09-10 13:29:01 -07:00
cobalt MIPS: Cobalt Don't use module_init in non-modular MTD registration. 2015-06-21 22:14:30 +02:00
configs Yama: remove needless CONFIG_SECURITY_YAMA_STACKED 2015-07-28 13:18:19 +10:00
dec MIPS: DEC: Do not set up the FPU interrupt if no FPU 2015-04-08 01:10:46 +02:00
emma
fw MIPS: ARC: Use __noreturn / unreachable in ARC termination functions. 2015-01-13 16:04:27 +01:00
include KVM: add halt_attempted_poll to VCPU stats 2015-09-16 12:17:00 +02:00
jazz MIPS: Jazz: Migrate to new 'set-state' interface 2015-09-03 12:07:50 +02:00
jz4740 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
kernel Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
kvm KVM: add halt_attempted_poll to VCPU stats 2015-09-16 12:17:00 +02:00
lantiq MIPS: Export get_c0_perfcount_int() 2015-08-03 09:25:18 +02:00
lasat MIPS: Lasat: Move from deprecated __initcall to arch_initcall. 2015-09-03 12:07:49 +02:00
lib MIPS: Rearrange ENTRYLO field definitions 2015-09-03 12:07:48 +02:00
loongson32 MIPS: loongsoon32: Migrate to new 'set-state' interface 2015-09-03 12:07:53 +02:00
loongson64 dma-mapping: consolidate dma_set_mask 2015-09-10 13:29:01 -07:00
math-emu MIPS: math-emu: Remove unused handle_dsemul function declaration 2015-09-03 12:08:15 +02:00
mm dma-mapping: consolidate dma_{alloc,free}_noncoherent 2015-09-10 13:29:01 -07:00
mti-malta MIPS: malta: Use generic platform_maar_init 2015-09-03 12:07:41 +02:00
mti-sead3 MIPS: Export get_c0_perfcount_int() 2015-08-03 09:25:18 +02:00
net MIPS: BPF: Introduce BPF ASM helpers 2015-06-21 21:54:25 +02:00
netlogic dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent} 2015-09-10 13:29:01 -07:00
oprofile MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
paravirt MIPS: SMP: Don't increment irq_count multiple times for call function IPIs 2015-08-03 09:25:12 +02:00
pci Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-09-03 16:55:55 -07:00
pistachio MIPS: pistachio: Allow to enable the external timer based clocksource 2015-09-03 12:08:07 +02:00
pmcs-msp71xx MIPS: irq: Use access helper irq_data_get_affinity_mask() 2015-08-26 15:23:28 +02:00
pnx833x
power MIPS: Hibernate: flush TLB entries earlier 2015-04-10 15:41:52 +02:00
ralink MIPS: rt3352: Migrate to new 'set-state' interface 2015-09-03 12:07:54 +02:00
rb532 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
sgi-ip22 MIPS: ip22-gio: Remove legacy suspend/resume support 2015-02-20 13:30:55 +01:00
sgi-ip27 MIPS: IP27: Migrate to new 'set-state' interface 2015-09-03 12:07:54 +02:00
sgi-ip32 MIPS: IP32: Fix build errors in reset code in DS1685 platform hook. 2015-05-13 00:01:41 +02:00
sibyte MIPS: Sibyte: Move bus watcher from deprecated __initcall to device_initcall 2015-09-03 12:07:49 +02:00
sni MIPS: sni: Migrate to new 'set-state' interface 2015-09-03 12:07:54 +02:00
txx9 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
vr41xx MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip. 2015-06-21 21:52:50 +02:00
Kbuild
Kbuild.platforms MIPS: Loongson: Naming style cleanup and rework 2015-06-21 21:53:59 +02:00
Kconfig kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
Kconfig.debug MIPS: Drop CONFIG_RUNTIME_DEBUG & debug.h 2015-08-26 15:23:36 +02:00
Makefile MIPS: SB1: Remove support for Pass 1 parts. 2015-07-14 21:47:34 +02:00