search for: account_system_tim

[PATCH 3/4] modify account_system_time() to add cputime to cpustat->guest i= f we are running a VCPU. We add this cputime to cpustat->user instead of cpustat->system because this part of KVM code is in fact user code although= it is executed in the kernel. We duplicate VCPU time between guest and user to allow an unmodified...

[PATCH 3/4] modify account_system_time() to add cputime to cpustat->guest i= f we are running a VCPU. We add this cputime to cpustat->user instead of cpustat->system because this part of KVM code is in fact user code although= it is executed in the kernel. We duplicate VCPU time between guest and user to allow an unmodified...

...gt; machine. All comments are welcome... I'm not sure it's the good way to do that. > > [PATCH 1/2] introduce a new field, "guest", in cpustat to store the time used by > the CPU to run virtual CPU. Modify /proc/stat to display this new field. > > [PATCH 2/2] modify account_system_time() to add cputime to cpustat->guest if we > are running a VCPU. We add this cputime to cpustat->user instead of > cpustat->system because this part of KVM code is in fact user code although it > is executed in the kernel. We duplicate VCPU time between guest and user to > allo...

...gt; machine. All comments are welcome... I'm not sure it's the good way to do that. > > [PATCH 1/2] introduce a new field, "guest", in cpustat to store the time used by > the CPU to run virtual CPU. Modify /proc/stat to display this new field. > > [PATCH 2/2] modify account_system_time() to add cputime to cpustat->guest if we > are running a VCPU. We add this cputime to cpustat->user instead of > cpustat->system because this part of KVM code is in fact user code although it > is executed in the kernel. We duplicate VCPU time between guest and user to > allo...

...this new field. [PATCH 2/4] like for cpustat, introduce the "gtime" (guest time of the task) and "cgtime" (guest time of the task children) fields for the tasks. Modify signal_struct and task_struct. Modify /proc/<pid>/stat to display these new fields. [PATCH 3/4] modify account_system_time() to add cputime to cpustat->guest if we are running a VCPU. We add this cputime to cpustat->user instead of cpustat->system because this part of KVM code is in fact user code although it is executed in the kernel. We duplicate VCPU time between guest and user to allow an unmodified &quo...

...this new field. [PATCH 2/4] like for cpustat, introduce the "gtime" (guest time of the task) and "cgtime" (guest time of the task children) fields for the tasks. Modify signal_struct and task_struct. Modify /proc/<pid>/stat to display these new fields. [PATCH 3/4] modify account_system_time() to add cputime to cpustat->guest if we are running a VCPU. We add this cputime to cpustat->user instead of cpustat->system because this part of KVM code is in fact user code although it is executed in the kernel. We duplicate VCPU time between guest and user to allow an unmodified &quo...

...@ static void update_wall_time(unsigned lo void update_process_times(int user_tick) { struct task_struct *p = current; - int cpu = smp_processor_id(); /* Note: this timer irq context must be accounted for as well. */ if (user_tick) account_user_time(p, jiffies_to_cputime(1)); else account_system_time(p, HARDIRQ_OFFSET, jiffies_to_cputime(1)); - run_local_timers(); - if (rcu_pending(cpu)) - rcu_check_callbacks(cpu, user_tick); - scheduler_tick(); - run_posix_cpu_timers(p); + + after_process_times_updated(user_tick, p); +} + +void update_idle_times(cputime_t idle_time) +{ + /* current should b...

...@ static void update_wall_time(unsigned lo void update_process_times(int user_tick) { struct task_struct *p = current; - int cpu = smp_processor_id(); /* Note: this timer irq context must be accounted for as well. */ if (user_tick) account_user_time(p, jiffies_to_cputime(1)); else account_system_time(p, HARDIRQ_OFFSET, jiffies_to_cputime(1)); - run_local_timers(); - if (rcu_pending(cpu)) - rcu_check_callbacks(cpu, user_tick); - scheduler_tick(); - run_posix_cpu_timers(p); + + after_process_times_updated(user_tick, p); +} + +void update_idle_times(cputime_t idle_time) +{ + /* current should b...

...10a7fbf>] sched_show_task+0xaf/0x110 [ 4071.796831] [<ffffffff810aa7f9>] dump_cpu_task+0x39/0x40 [ 4071.796834] [<ffffffff810dda77>] rcu_dump_cpu_stacks+0x87/0xc0 [ 4071.796838] [<ffffffff810e1610>] rcu_check_callbacks+0x470/0x720 [ 4071.796841] [<ffffffff810ab2d1>] ? account_system_time+0x81/0x110 [ 4071.796844] [<ffffffff810ab57b>] ? account_process_tick+0x6b/0x170 [ 4071.796872] [<ffffffffc01d972f>] ? nvkm_engine_intr+0x1f/0x30 [nouveau] [ 4071.796876] [<ffffffff810f60d0>] ? tick_sched_do_timer+0x30/0x30 [ 4071.796880] [<ffffffff810e6b02>] update_pro...

...-2.6.16-rc6.orig/include/linux/kernel_stat.h 2006-01-02 19:21:10.000000000 -0800 +++ linux-2.6.16-rc6/include/linux/kernel_stat.h 2006-03-12 19:57:48.000000000 -0800 @@ -55,5 +55,6 @@ static inline int kstat_irqs(int irq) extern void account_user_time(struct task_struct *, cputime_t); extern void account_system_time(struct task_struct *, int, cputime_t); extern void account_steal_time(struct task_struct *, cputime_t); +extern void account_cpu_steal_time(cputime_t); #endif /* _LINUX_KERNEL_STAT_H */ Index: linux-2.6.16-rc6/kernel/sched.c =================================================================== -...

...-2.6.16-rc6.orig/include/linux/kernel_stat.h 2006-01-02 19:21:10.000000000 -0800 +++ linux-2.6.16-rc6/include/linux/kernel_stat.h 2006-03-12 19:57:48.000000000 -0800 @@ -55,5 +55,6 @@ static inline int kstat_irqs(int irq) extern void account_user_time(struct task_struct *, cputime_t); extern void account_system_time(struct task_struct *, int, cputime_t); extern void account_steal_time(struct task_struct *, cputime_t); +extern void account_cpu_steal_time(cputime_t); #endif /* _LINUX_KERNEL_STAT_H */ Index: linux-2.6.16-rc6/kernel/sched.c =================================================================== -...

...[ 91.721140] Call Trace: [ 91.721141] <IRQ> [ 91.721143] sched_show_task+0xd5/0x140 [ 91.721144] dump_cpu_task+0x39/0x40 [ 91.721169] rcu_dump_cpu_stacks+0x80/0xbb [ 91.721171] rcu_check_callbacks+0x71e/0x880 [ 91.721172] ? acct_account_cputime+0x1c/0x20 [ 91.721173] ? account_system_time+0x73/0x100 [ 91.721175] ? tick_sched_do_timer+0x40/0x40 [ 91.721176] update_process_times+0x2f/0x60 [ 91.721177] tick_sched_handle.isra.15+0x25/0x60 [ 91.721178] tick_sched_timer+0x3d/0x70 [ 91.721179] __hrtimer_run_queues+0xe5/0x250 [ 91.721180] hrtimer_interrupt+0xa8/0x1a0 [...

.../math-emu/ Index: kvm/arch/s390/kernel/vtime.c =================================================================== --- kvm.orig/arch/s390/kernel/vtime.c +++ kvm/arch/s390/kernel/vtime.c @@ -110,6 +110,7 @@ void account_system_vtime(struct task_st S390_lowcore.steal_clock -= cputime << 12; account_system_time(tsk, 0, cputime); } +EXPORT_SYMBOL_GPL(account_system_vtime); static inline void set_vtimer(__u64 expires) { Index: kvm/arch/s390/kvm/Makefile =================================================================== --- /dev/null +++ kvm/arch/s390/kvm/Makefile @@ -0,0 +1,14 @@ +# Makefile for kern...

.../math-emu/ Index: kvm/arch/s390/kernel/vtime.c =================================================================== --- kvm.orig/arch/s390/kernel/vtime.c +++ kvm/arch/s390/kernel/vtime.c @@ -110,6 +110,7 @@ void account_system_vtime(struct task_st S390_lowcore.steal_clock -= cputime << 12; account_system_time(tsk, 0, cputime); } +EXPORT_SYMBOL_GPL(account_system_vtime); static inline void set_vtimer(__u64 expires) { Index: kvm/arch/s390/kvm/Makefile =================================================================== --- /dev/null +++ kvm/arch/s390/kvm/Makefile @@ -0,0 +1,14 @@ +# Makefile for kern...

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths