* [PATCH v6 00/11] implement vcpu preempted check
@ 2016-10-28 8:11 ` Pan Xinhui
0 siblings, 0 replies; 8+ messages in thread
From: Pan Xinhui @ 2016-10-28 8:11 UTC (permalink / raw)
To: linux-kernel, linuxppc-dev, virtualization, linux-s390,
xen-devel-request, kvm, xen-devel, x86
Cc: kernellwp, jgross, David.Laight, rkrcmar, peterz, benh,
will.deacon, Pan Xinhui, mingo, paulus, mpe, pbonzini, paulmck,
boqun.feng
change from v5:
spilt x86/kvm patch into guest/host part.
introduce kvm_write_guest_offset_cached.
fix some typos.
rebase patch onto 4.9.2
change from v4:
spilt x86 kvm vcpu preempted check into two patches.
add documentation patch.
add x86 vcpu preempted check patch under xen
add s390 vcpu preempted check patch
change from v3:
add x86 vcpu preempted check patch
change from v2:
no code change, fix typos, update some comments
change from v1:
a simplier definition of default vcpu_is_preempted
skip mahcine type check on ppc, and add config. remove dedicated macro.
add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
add more comments
thanks boqun and Peter's suggestion.
This patch set aims to fix lock holder preemption issues.
test-case:
perf record -a perf bench sched messaging -g 400 -p && perf report
18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
2.49% sched-messaging [kernel.vmlinux] [k] system_call
We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
These spin_on_onwer variant also cause rcu stall before we apply this patch set
We also have observed some performace improvements in uninx benchmark tests.
PPC test result:
1 copy - 0.94%
2 copy - 7.17%
4 copy - 11.9%
8 copy - 3.04%
16 copy - 15.11%
details below:
Without patch:
1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
With patch:
1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
X86 test result:
test-case after-patch before-patch
Execl Throughput | 18307.9 lps | 11701.6 lps
File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
Pipe Throughput | 11872208.7 lps | 11855628.9 lps
Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
Process Creation | 29881.2 lps | 28572.8 lps
Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
System Call Overhead | 10385653.0 lps | 10419979.0 lps
Christian Borntraeger (1):
s390/spinlock: Provide vcpu_is_preempted
Juergen Gross (1):
x86, xen: support vcpu preempted check
Pan Xinhui (9):
kernel/sched: introduce vcpu preempted check interface
locking/osq: Drop the overload of osq_lock()
kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
powerpc/spinlock: support vcpu preempted check
x86, paravirt: Add interface to support kvm/xen vcpu preempted check
KVM: Introduce kvm_write_guest_offset_cached
x86, kvm/x86.c: support vcpu preempted check
x86, kernel/kvm.c: support vcpu preempted check
Documentation: virtual: kvm: Support vcpu preempted check
Documentation/virtual/kvm/msr.txt | 9 ++++++++-
arch/powerpc/include/asm/spinlock.h | 8 ++++++++
arch/s390/include/asm/spinlock.h | 8 ++++++++
arch/s390/kernel/smp.c | 9 +++++++--
arch/s390/lib/spinlock.c | 25 ++++++++-----------------
arch/x86/include/asm/paravirt_types.h | 2 ++
arch/x86/include/asm/spinlock.h | 8 ++++++++
arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
arch/x86/kernel/kvm.c | 12 ++++++++++++
arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
arch/x86/kvm/x86.c | 16 ++++++++++++++++
arch/x86/xen/spinlock.c | 3 ++-
include/linux/kvm_host.h | 2 ++
include/linux/sched.h | 12 ++++++++++++
kernel/locking/mutex.c | 15 +++++++++++++--
kernel/locking/osq_lock.c | 10 +++++++++-
kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
virt/kvm/kvm_main.c | 20 ++++++++++++++------
18 files changed, 151 insertions(+), 34 deletions(-)
--
2.4.11
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 8:11 ` Pan Xinhui
(?)
@ 2016-10-28 9:57 ` Paolo Bonzini
-1 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2016-10-28 9:57 UTC (permalink / raw)
To: Pan Xinhui, linux-kernel, linuxppc-dev, virtualization,
linux-s390, xen-devel-request, kvm, xen-devel, x86
Cc: kernellwp, jgross, David.Laight, rkrcmar, peterz, benh,
bsingharora, will.deacon, borntraeger, mingo, paulus, mpe,
paulmck, boqun.feng
On 28/10/2016 10:11, Pan Xinhui wrote:
> change from v5:
> spilt x86/kvm patch into guest/host part.
> introduce kvm_write_guest_offset_cached.
> fix some typos.
> rebase patch onto 4.9.2
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Thanks,
Paolo
> change from v4:
> spilt x86 kvm vcpu preempted check into two patches.
> add documentation patch.
> add x86 vcpu preempted check patch under xen
> add s390 vcpu preempted check patch
> change from v3:
> add x86 vcpu preempted check patch
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
>
> This patch set aims to fix lock holder preemption issues.
>
> test-case:
> perf record -a perf bench sched messaging -g 400 -p && perf report
>
> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>
> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>
> We also have observed some performace improvements in uninx benchmark tests.
>
> PPC test result:
> 1 copy - 0.94%
> 2 copy - 7.17%
> 4 copy - 11.9%
> 8 copy - 3.04%
> 16 copy - 15.11%
>
> details below:
> Without patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>
> With patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>
> X86 test result:
> test-case after-patch before-patch
> Execl Throughput | 18307.9 lps | 11701.6 lps
> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
> Process Creation | 29881.2 lps | 28572.8 lps
> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>
> Christian Borntraeger (1):
> s390/spinlock: Provide vcpu_is_preempted
>
> Juergen Gross (1):
> x86, xen: support vcpu preempted check
>
> Pan Xinhui (9):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
> KVM: Introduce kvm_write_guest_offset_cached
> x86, kvm/x86.c: support vcpu preempted check
> x86, kernel/kvm.c: support vcpu preempted check
> Documentation: virtual: kvm: Support vcpu preempted check
>
> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
> arch/s390/include/asm/spinlock.h | 8 ++++++++
> arch/s390/kernel/smp.c | 9 +++++++--
> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
> arch/x86/include/asm/paravirt_types.h | 2 ++
> arch/x86/include/asm/spinlock.h | 8 ++++++++
> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
> arch/x86/kernel/kvm.c | 12 ++++++++++++
> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
> arch/x86/kvm/x86.c | 16 ++++++++++++++++
> arch/x86/xen/spinlock.c | 3 ++-
> include/linux/kvm_host.h | 2 ++
> include/linux/sched.h | 12 ++++++++++++
> kernel/locking/mutex.c | 15 +++++++++++++--
> kernel/locking/osq_lock.c | 10 +++++++++-
> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
> virt/kvm/kvm_main.c | 20 ++++++++++++++------
> 18 files changed, 151 insertions(+), 34 deletions(-)
>
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 8:11 ` Pan Xinhui
(?)
(?)
@ 2016-10-28 9:57 ` Paolo Bonzini
-1 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2016-10-28 9:57 UTC (permalink / raw)
To: Pan Xinhui, linux-kernel, linuxppc-dev, virtualization,
linux-s390, xen-devel-request, kvm, xen-devel, x86
Cc: benh, paulus, mpe, mingo, peterz, paulmck, will.deacon,
kernellwp, jgross, bsingharora, boqun.feng, borntraeger, rkrcmar,
David.Laight
On 28/10/2016 10:11, Pan Xinhui wrote:
> change from v5:
> spilt x86/kvm patch into guest/host part.
> introduce kvm_write_guest_offset_cached.
> fix some typos.
> rebase patch onto 4.9.2
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Thanks,
Paolo
> change from v4:
> spilt x86 kvm vcpu preempted check into two patches.
> add documentation patch.
> add x86 vcpu preempted check patch under xen
> add s390 vcpu preempted check patch
> change from v3:
> add x86 vcpu preempted check patch
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
>
> This patch set aims to fix lock holder preemption issues.
>
> test-case:
> perf record -a perf bench sched messaging -g 400 -p && perf report
>
> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>
> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>
> We also have observed some performace improvements in uninx benchmark tests.
>
> PPC test result:
> 1 copy - 0.94%
> 2 copy - 7.17%
> 4 copy - 11.9%
> 8 copy - 3.04%
> 16 copy - 15.11%
>
> details below:
> Without patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>
> With patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>
> X86 test result:
> test-case after-patch before-patch
> Execl Throughput | 18307.9 lps | 11701.6 lps
> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
> Process Creation | 29881.2 lps | 28572.8 lps
> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>
> Christian Borntraeger (1):
> s390/spinlock: Provide vcpu_is_preempted
>
> Juergen Gross (1):
> x86, xen: support vcpu preempted check
>
> Pan Xinhui (9):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
> KVM: Introduce kvm_write_guest_offset_cached
> x86, kvm/x86.c: support vcpu preempted check
> x86, kernel/kvm.c: support vcpu preempted check
> Documentation: virtual: kvm: Support vcpu preempted check
>
> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
> arch/s390/include/asm/spinlock.h | 8 ++++++++
> arch/s390/kernel/smp.c | 9 +++++++--
> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
> arch/x86/include/asm/paravirt_types.h | 2 ++
> arch/x86/include/asm/spinlock.h | 8 ++++++++
> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
> arch/x86/kernel/kvm.c | 12 ++++++++++++
> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
> arch/x86/kvm/x86.c | 16 ++++++++++++++++
> arch/x86/xen/spinlock.c | 3 ++-
> include/linux/kvm_host.h | 2 ++
> include/linux/sched.h | 12 ++++++++++++
> kernel/locking/mutex.c | 15 +++++++++++++--
> kernel/locking/osq_lock.c | 10 +++++++++-
> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
> virt/kvm/kvm_main.c | 20 ++++++++++++++------
> 18 files changed, 151 insertions(+), 34 deletions(-)
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 8:11 ` Pan Xinhui
` (2 preceding siblings ...)
(?)
@ 2016-10-28 9:57 ` Paolo Bonzini
-1 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2016-10-28 9:57 UTC (permalink / raw)
To: Pan Xinhui, linux-kernel, linuxppc-dev, virtualization,
linux-s390, xen-devel-request, kvm, xen-devel, x86
Cc: kernellwp, jgross, David.Laight, rkrcmar, peterz, benh,
will.deacon, mingo, paulus, mpe, paulmck, boqun.feng
On 28/10/2016 10:11, Pan Xinhui wrote:
> change from v5:
> spilt x86/kvm patch into guest/host part.
> introduce kvm_write_guest_offset_cached.
> fix some typos.
> rebase patch onto 4.9.2
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Thanks,
Paolo
> change from v4:
> spilt x86 kvm vcpu preempted check into two patches.
> add documentation patch.
> add x86 vcpu preempted check patch under xen
> add s390 vcpu preempted check patch
> change from v3:
> add x86 vcpu preempted check patch
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
>
> This patch set aims to fix lock holder preemption issues.
>
> test-case:
> perf record -a perf bench sched messaging -g 400 -p && perf report
>
> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>
> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>
> We also have observed some performace improvements in uninx benchmark tests.
>
> PPC test result:
> 1 copy - 0.94%
> 2 copy - 7.17%
> 4 copy - 11.9%
> 8 copy - 3.04%
> 16 copy - 15.11%
>
> details below:
> Without patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>
> With patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>
> X86 test result:
> test-case after-patch before-patch
> Execl Throughput | 18307.9 lps | 11701.6 lps
> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
> Process Creation | 29881.2 lps | 28572.8 lps
> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>
> Christian Borntraeger (1):
> s390/spinlock: Provide vcpu_is_preempted
>
> Juergen Gross (1):
> x86, xen: support vcpu preempted check
>
> Pan Xinhui (9):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
> KVM: Introduce kvm_write_guest_offset_cached
> x86, kvm/x86.c: support vcpu preempted check
> x86, kernel/kvm.c: support vcpu preempted check
> Documentation: virtual: kvm: Support vcpu preempted check
>
> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
> arch/s390/include/asm/spinlock.h | 8 ++++++++
> arch/s390/kernel/smp.c | 9 +++++++--
> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
> arch/x86/include/asm/paravirt_types.h | 2 ++
> arch/x86/include/asm/spinlock.h | 8 ++++++++
> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
> arch/x86/kernel/kvm.c | 12 ++++++++++++
> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
> arch/x86/kvm/x86.c | 16 ++++++++++++++++
> arch/x86/xen/spinlock.c | 3 ++-
> include/linux/kvm_host.h | 2 ++
> include/linux/sched.h | 12 ++++++++++++
> kernel/locking/mutex.c | 15 +++++++++++++--
> kernel/locking/osq_lock.c | 10 +++++++++-
> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
> virt/kvm/kvm_main.c | 20 ++++++++++++++------
> 18 files changed, 151 insertions(+), 34 deletions(-)
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Xen-devel] [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 8:11 ` Pan Xinhui
` (3 preceding siblings ...)
(?)
@ 2016-10-28 19:38 ` Konrad Rzeszutek Wilk
2016-10-29 4:37 ` Pan Xinhui
-1 siblings, 1 reply; 8+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-10-28 19:38 UTC (permalink / raw)
To: Pan Xinhui
Cc: linux-kernel, linuxppc-dev, virtualization, linux-s390,
xen-devel-request, kvm, xen-devel, x86, kernellwp, jgross,
David.Laight, rkrcmar, peterz, benh, bsingharora, will.deacon,
borntraeger, mingo, paulus, mpe, pbonzini, paulmck, boqun.feng
On Fri, Oct 28, 2016 at 04:11:16AM -0400, Pan Xinhui wrote:
> change from v5:
> spilt x86/kvm patch into guest/host part.
> introduce kvm_write_guest_offset_cached.
> fix some typos.
> rebase patch onto 4.9.2
> change from v4:
> spilt x86 kvm vcpu preempted check into two patches.
> add documentation patch.
> add x86 vcpu preempted check patch under xen
> add s390 vcpu preempted check patch
> change from v3:
> add x86 vcpu preempted check patch
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
>
> This patch set aims to fix lock holder preemption issues.
Do you have a git tree with these patches?
>
> test-case:
> perf record -a perf bench sched messaging -g 400 -p && perf report
>
> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>
> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>
> We also have observed some performace improvements in uninx benchmark tests.
>
> PPC test result:
> 1 copy - 0.94%
> 2 copy - 7.17%
> 4 copy - 11.9%
> 8 copy - 3.04%
> 16 copy - 15.11%
>
> details below:
> Without patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>
> With patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>
> X86 test result:
> test-case after-patch before-patch
> Execl Throughput | 18307.9 lps | 11701.6 lps
> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
> Process Creation | 29881.2 lps | 28572.8 lps
> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>
> Christian Borntraeger (1):
> s390/spinlock: Provide vcpu_is_preempted
>
> Juergen Gross (1):
> x86, xen: support vcpu preempted check
>
> Pan Xinhui (9):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
> KVM: Introduce kvm_write_guest_offset_cached
> x86, kvm/x86.c: support vcpu preempted check
> x86, kernel/kvm.c: support vcpu preempted check
> Documentation: virtual: kvm: Support vcpu preempted check
>
> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
> arch/s390/include/asm/spinlock.h | 8 ++++++++
> arch/s390/kernel/smp.c | 9 +++++++--
> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
> arch/x86/include/asm/paravirt_types.h | 2 ++
> arch/x86/include/asm/spinlock.h | 8 ++++++++
> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
> arch/x86/kernel/kvm.c | 12 ++++++++++++
> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
> arch/x86/kvm/x86.c | 16 ++++++++++++++++
> arch/x86/xen/spinlock.c | 3 ++-
> include/linux/kvm_host.h | 2 ++
> include/linux/sched.h | 12 ++++++++++++
> kernel/locking/mutex.c | 15 +++++++++++++--
> kernel/locking/osq_lock.c | 10 +++++++++-
> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
> virt/kvm/kvm_main.c | 20 ++++++++++++++------
> 18 files changed, 151 insertions(+), 34 deletions(-)
>
> --
> 2.4.11
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> https://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 19:38 ` [Xen-devel] " Konrad Rzeszutek Wilk
@ 2016-10-29 4:37 ` Pan Xinhui
0 siblings, 0 replies; 8+ messages in thread
From: Pan Xinhui @ 2016-10-29 4:37 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Pan Xinhui
Cc: kvm, rkrcmar, peterz, benh, bsingharora, will.deacon,
virtualization, paulus, kernellwp, linux-s390, xen-devel-request,
x86, borntraeger, mingo, xen-devel, paulmck, boqun.feng, jgross,
linux-kernel, David.Laight, mpe, pbonzini, linuxppc-dev
[-- Attachment #1: Type: text/plain, Size: 5899 bytes --]
在 2016/10/29 03:38, Konrad Rzeszutek Wilk 写道:
> On Fri, Oct 28, 2016 at 04:11:16AM -0400, Pan Xinhui wrote:
>> change from v5:
>> spilt x86/kvm patch into guest/host part.
>> introduce kvm_write_guest_offset_cached.
>> fix some typos.
>> rebase patch onto 4.9.2
>> change from v4:
>> spilt x86 kvm vcpu preempted check into two patches.
>> add documentation patch.
>> add x86 vcpu preempted check patch under xen
>> add s390 vcpu preempted check patch
>> change from v3:
>> add x86 vcpu preempted check patch
>> change from v2:
>> no code change, fix typos, update some comments
>> change from v1:
>> a simplier definition of default vcpu_is_preempted
>> skip mahcine type check on ppc, and add config. remove dedicated macro.
>> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
>> add more comments
>> thanks boqun and Peter's suggestion.
>>
>> This patch set aims to fix lock holder preemption issues.
>
> Do you have a git tree with these patches?
>
Currently no, sorry :(
I make a tar file for this patcheset. Maybe a little easier to apply :)
thanks
xinhui
>>
>> test-case:
>> perf record -a perf bench sched messaging -g 400 -p && perf report
>>
>> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
>> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
>> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
>> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
>> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
>> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
>> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>>
>> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
>> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
>> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>>
>> We also have observed some performace improvements in uninx benchmark tests.
>>
>> PPC test result:
>> 1 copy - 0.94%
>> 2 copy - 7.17%
>> 4 copy - 11.9%
>> 8 copy - 3.04%
>> 16 copy - 15.11%
>>
>> details below:
>> Without patch:
>>
>> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
>> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
>> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
>> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
>> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>>
>> With patch:
>>
>> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
>> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
>> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
>> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
>> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>>
>> X86 test result:
>> test-case after-patch before-patch
>> Execl Throughput | 18307.9 lps | 11701.6 lps
>> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
>> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
>> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
>> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
>> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
>> Process Creation | 29881.2 lps | 28572.8 lps
>> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
>> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
>> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>>
>> Christian Borntraeger (1):
>> s390/spinlock: Provide vcpu_is_preempted
>>
>> Juergen Gross (1):
>> x86, xen: support vcpu preempted check
>>
>> Pan Xinhui (9):
>> kernel/sched: introduce vcpu preempted check interface
>> locking/osq: Drop the overload of osq_lock()
>> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
>> powerpc/spinlock: support vcpu preempted check
>> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
>> KVM: Introduce kvm_write_guest_offset_cached
>> x86, kvm/x86.c: support vcpu preempted check
>> x86, kernel/kvm.c: support vcpu preempted check
>> Documentation: virtual: kvm: Support vcpu preempted check
>>
>> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
>> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
>> arch/s390/include/asm/spinlock.h | 8 ++++++++
>> arch/s390/kernel/smp.c | 9 +++++++--
>> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
>> arch/x86/include/asm/paravirt_types.h | 2 ++
>> arch/x86/include/asm/spinlock.h | 8 ++++++++
>> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
>> arch/x86/kernel/kvm.c | 12 ++++++++++++
>> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
>> arch/x86/kvm/x86.c | 16 ++++++++++++++++
>> arch/x86/xen/spinlock.c | 3 ++-
>> include/linux/kvm_host.h | 2 ++
>> include/linux/sched.h | 12 ++++++++++++
>> kernel/locking/mutex.c | 15 +++++++++++++--
>> kernel/locking/osq_lock.c | 10 +++++++++-
>> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
>> virt/kvm/kvm_main.c | 20 ++++++++++++++------
>> 18 files changed, 151 insertions(+), 34 deletions(-)
>>
>> --
>> 2.4.11
>>
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xen.org
>> https://lists.xen.org/xen-devel
>
[-- Attachment #2: vcpu.tar --]
[-- Type: application/x-tar, Size: 81920 bytes --]
[-- Attachment #3: Type: text/plain, Size: 127 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v6 00/11] implement vcpu preempted check
2016-10-28 8:11 ` Pan Xinhui
` (4 preceding siblings ...)
(?)
@ 2016-10-28 19:38 ` Konrad Rzeszutek Wilk
-1 siblings, 0 replies; 8+ messages in thread
From: Konrad Rzeszutek Wilk @ 2016-10-28 19:38 UTC (permalink / raw)
To: Pan Xinhui
Cc: kvm, rkrcmar, peterz, benh, bsingharora, will.deacon,
virtualization, paulus, kernellwp, linux-s390, xen-devel-request,
x86, borntraeger, mingo, xen-devel, paulmck, boqun.feng, jgross,
linux-kernel, David.Laight, mpe, pbonzini, linuxppc-dev
On Fri, Oct 28, 2016 at 04:11:16AM -0400, Pan Xinhui wrote:
> change from v5:
> spilt x86/kvm patch into guest/host part.
> introduce kvm_write_guest_offset_cached.
> fix some typos.
> rebase patch onto 4.9.2
> change from v4:
> spilt x86 kvm vcpu preempted check into two patches.
> add documentation patch.
> add x86 vcpu preempted check patch under xen
> add s390 vcpu preempted check patch
> change from v3:
> add x86 vcpu preempted check patch
> change from v2:
> no code change, fix typos, update some comments
> change from v1:
> a simplier definition of default vcpu_is_preempted
> skip mahcine type check on ppc, and add config. remove dedicated macro.
> add one patch to drop overload of rwsem_spin_on_owner and mutex_spin_on_owner.
> add more comments
> thanks boqun and Peter's suggestion.
>
> This patch set aims to fix lock holder preemption issues.
Do you have a git tree with these patches?
>
> test-case:
> perf record -a perf bench sched messaging -g 400 -p && perf report
>
> 18.09% sched-messaging [kernel.vmlinux] [k] osq_lock
> 12.28% sched-messaging [kernel.vmlinux] [k] rwsem_spin_on_owner
> 5.27% sched-messaging [kernel.vmlinux] [k] mutex_unlock
> 3.89% sched-messaging [kernel.vmlinux] [k] wait_consider_task
> 3.64% sched-messaging [kernel.vmlinux] [k] _raw_write_lock_irq
> 3.41% sched-messaging [kernel.vmlinux] [k] mutex_spin_on_owner.is
> 2.49% sched-messaging [kernel.vmlinux] [k] system_call
>
> We introduce interface bool vcpu_is_preempted(int cpu) and use it in some spin
> loops of osq_lock, rwsem_spin_on_owner and mutex_spin_on_owner.
> These spin_on_onwer variant also cause rcu stall before we apply this patch set
>
> We also have observed some performace improvements in uninx benchmark tests.
>
> PPC test result:
> 1 copy - 0.94%
> 2 copy - 7.17%
> 4 copy - 11.9%
> 8 copy - 3.04%
> 16 copy - 15.11%
>
> details below:
> Without patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2188223.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1804433.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1237257.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1032658.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 768000.0 KBps (30.1 s, 1 samples)
>
> With patch:
>
> 1 copy - File Write 4096 bufsize 8000 maxblocks 2209189.0 KBps (30.0 s, 1 samples)
> 2 copy - File Write 4096 bufsize 8000 maxblocks 1943816.0 KBps (30.0 s, 1 samples)
> 4 copy - File Write 4096 bufsize 8000 maxblocks 1405591.0 KBps (30.0 s, 1 samples)
> 8 copy - File Write 4096 bufsize 8000 maxblocks 1065080.0 KBps (30.0 s, 1 samples)
> 16 copy - File Write 4096 bufsize 8000 maxblocks 904762.0 KBps (30.0 s, 1 samples)
>
> X86 test result:
> test-case after-patch before-patch
> Execl Throughput | 18307.9 lps | 11701.6 lps
> File Copy 1024 bufsize 2000 maxblocks | 1352407.3 KBps | 790418.9 KBps
> File Copy 256 bufsize 500 maxblocks | 367555.6 KBps | 222867.7 KBps
> File Copy 4096 bufsize 8000 maxblocks | 3675649.7 KBps | 1780614.4 KBps
> Pipe Throughput | 11872208.7 lps | 11855628.9 lps
> Pipe-based Context Switching | 1495126.5 lps | 1490533.9 lps
> Process Creation | 29881.2 lps | 28572.8 lps
> Shell Scripts (1 concurrent) | 23224.3 lpm | 22607.4 lpm
> Shell Scripts (8 concurrent) | 3531.4 lpm | 3211.9 lpm
> System Call Overhead | 10385653.0 lps | 10419979.0 lps
>
> Christian Borntraeger (1):
> s390/spinlock: Provide vcpu_is_preempted
>
> Juergen Gross (1):
> x86, xen: support vcpu preempted check
>
> Pan Xinhui (9):
> kernel/sched: introduce vcpu preempted check interface
> locking/osq: Drop the overload of osq_lock()
> kernel/locking: Drop the overload of {mutex,rwsem}_spin_on_owner
> powerpc/spinlock: support vcpu preempted check
> x86, paravirt: Add interface to support kvm/xen vcpu preempted check
> KVM: Introduce kvm_write_guest_offset_cached
> x86, kvm/x86.c: support vcpu preempted check
> x86, kernel/kvm.c: support vcpu preempted check
> Documentation: virtual: kvm: Support vcpu preempted check
>
> Documentation/virtual/kvm/msr.txt | 9 ++++++++-
> arch/powerpc/include/asm/spinlock.h | 8 ++++++++
> arch/s390/include/asm/spinlock.h | 8 ++++++++
> arch/s390/kernel/smp.c | 9 +++++++--
> arch/s390/lib/spinlock.c | 25 ++++++++-----------------
> arch/x86/include/asm/paravirt_types.h | 2 ++
> arch/x86/include/asm/spinlock.h | 8 ++++++++
> arch/x86/include/uapi/asm/kvm_para.h | 4 +++-
> arch/x86/kernel/kvm.c | 12 ++++++++++++
> arch/x86/kernel/paravirt-spinlocks.c | 6 ++++++
> arch/x86/kvm/x86.c | 16 ++++++++++++++++
> arch/x86/xen/spinlock.c | 3 ++-
> include/linux/kvm_host.h | 2 ++
> include/linux/sched.h | 12 ++++++++++++
> kernel/locking/mutex.c | 15 +++++++++++++--
> kernel/locking/osq_lock.c | 10 +++++++++-
> kernel/locking/rwsem-xadd.c | 16 +++++++++++++---
> virt/kvm/kvm_main.c | 20 ++++++++++++++------
> 18 files changed, 151 insertions(+), 34 deletions(-)
>
> --
> 2.4.11
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> https://lists.xen.org/xen-devel
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 8+ messages in thread