search for: cpustat

...+1100 @@ -211,7 +211,7 @@ target_phys_addr_t cpu_get_phys_page_deb } //some functions to handle the io req packet -void sp_info(void) +static void sp_info(void) { ioreq_t *req; int i; @@ -281,7 +281,8 @@ static ioreq_t *cpu_get_ioreq(void) return NULL; } -unsigned long do_inp(CPUState *env, unsigned long addr, unsigned long size) +static unsigned long do_inp(CPUState *env, unsigned long addr, + unsigned long size) { switch(size) { case 1: @@ -296,8 +297,8 @@ unsigned long do_inp(CPUState *env, unsi } } -void do_outp(CPUState *env, u...

[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 "top(1)" to display...

[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 "top(1)" to display...

...es is to introduce Virtual Machine time accounting. _Ingo_, as these patches modify files of the scheduler, could you have a look to them, please ? [PATCH 1/4] as recent CPUs introduce a third running state, after "user" and "system", we need 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 2/4] 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_str...

...es is to introduce Virtual Machine time accounting. _Ingo_, as these patches modify files of the scheduler, could you have a look to them, please ? [PATCH 1/4] as recent CPUs introduce a third running state, after "user" and "system", we need 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 2/4] 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_str...

...st. 2) do nothing, just go to sleep. Could you get (or do you have) numbers for (2)? More important, I think a barrier is missing: Lock holder --------------------------------------- // queue_spin_unlock barrier(); ACCESS_ONCE(qlock->lock) = 0; barrier(); // pv_kick_node: if (pv->cpustate != PV_CPU_HALTED) return; ACCESS_ONCE(pv->cpustate) = PV_CPU_KICKED; __queue_kick_cpu(pv->mycpu, PV_KICK_QUEUE_HEAD); Waiter ------------------------------------------- // pv_head_spin_check ACCESS_ONCE(pv->cpustate) = PV_CPU_HALTED; lockval = cmpxchg(&qlock->lock,...

On 12/03/14 18:54, Waiman Long wrote: > This patch adds para-virtualization support to the queue spinlock in > the same way as was done in the PV ticket lock code. In essence, the > lock waiters will spin for a specified number of times (QSPIN_THRESHOLD > = 2^14) and then halted itself. The queue head waiter will spins > 2*QSPIN_THRESHOLD times before halting itself. When it has

On 12/03/14 18:54, Waiman Long wrote: > This patch adds para-virtualization support to the queue spinlock in > the same way as was done in the PV ticket lock code. In essence, the > lock waiters will spin for a specified number of times (QSPIN_THRESHOLD > = 2^14) and then halted itself. The queue head waiter will spins > 2*QSPIN_THRESHOLD times before halting itself. When it has

...CKED, 0) == _QSPINLOCK_LOCKED)) return; else queue_spin_unlock_slowpath(lock); } else { __queue_spin_unlock(lock); } > // pv_kick_node: > if (pv->cpustate != PV_CPU_HALTED) > return; > ACCESS_ONCE(pv->cpustate) = PV_CPU_KICKED; > __queue_kick_cpu(pv->mycpu, PV_KICK_QUEUE_HEAD); > > Waiter ------------------------------------------- > > // pv_head_spin_check > ACCESS_ONCE(pv->cp...

...CKED, 0) == _QSPINLOCK_LOCKED)) return; else queue_spin_unlock_slowpath(lock); } else { __queue_spin_unlock(lock); } > // pv_kick_node: > if (pv->cpustate != PV_CPU_HALTED) > return; > ACCESS_ONCE(pv->cpustate) = PV_CPU_KICKED; > __queue_kick_cpu(pv->mycpu, PV_KICK_QUEUE_HEAD); > > Waiter ------------------------------------------- > > // pv_head_spin_check > ACCESS_ONCE(pv->cp...

...question is: what larger goal are you trying to accomplish? >> Holding a constant value in a register might not be the best way to do what >> you're doing. >> > I am using LLVM as the code generator for my system emulator. I need > one register holding the address of the CPUState struct. most of the > emulation code is generated by LLVM. a small amount of code is not ( > typically binary patched) . I must make sure that i know in which > register is the CPUState held when i am patching some code. Is there just one CPUState struct for the entire simulator, or are...

Laurent Vivier wrote: > The aim of these two patches is to measure the CPU time used by a virtual > 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 b...

Laurent Vivier wrote: > The aim of these two patches is to measure the CPU time used by a virtual > 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 b...

...-----+------------+------------+------------+ + * | PV Node 0 | PV Node 1 | PV Node 2 | PV Node 3 | + * +------------+------------+------------+------------+ + */ +struct pv_qnode { + struct mcs_spinlock mcs; /* MCS node */ + struct mcs_spinlock dummy[3]; /* 3 dummy MCS nodes */ + s8 cpustate; /* CPU status flag */ + s8 mayhalt; /* May be halted soon */ + u32 mycpu; /* CPU number of this node */ + struct pv_qnode *prev; /* Pointer to previous node */ +}; + +#define qhead mcs.locked /* Queue head flag */ + +/** + * pv_init_vars - initialize fields in struct pv_qnode +...

...r. > > The real question is: what larger goal are you trying to accomplish? > Holding a constant value in a register might not be the best way to do what > you're doing. > I am using LLVM as the code generator for my system emulator. I need one register holding the address of the CPUState struct. most of the emulation code is generated by LLVM. a small amount of code is not ( typically binary patched) . I must make sure that i know in which register is the CPUState held when i am patching some code. Xin > -- John T. > > >> >> On Jul 19, 2012, at 11:14 AM, Xi...

...ER_SHIFT 15 +#define MSI_DATA_LEVEL_SHIFT 14 +#define MSI_ADDR_DEST_MODE_SHIFT 2 +#define MSI_ADDR_DEST_ID_SHIFT 12 +#define MSI_ADDR_DEST_ID_MASK 0x00ffff0 + +#define MSI_ADDR_BASE 0xfee00000 +#define MSI_ADDR_SIZE 0x100000 + typedef struct APICState { CPUState *cpu_env; uint32_t apicbase; @@ -712,11 +727,31 @@ static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr) return val; } +static void apic_send_msi(target_phys_addr_t addr, uint32 data) +{ + uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_S...

...ER_SHIFT 15 +#define MSI_DATA_LEVEL_SHIFT 14 +#define MSI_ADDR_DEST_MODE_SHIFT 2 +#define MSI_ADDR_DEST_ID_SHIFT 12 +#define MSI_ADDR_DEST_ID_MASK 0x00ffff0 + +#define MSI_ADDR_BASE 0xfee00000 +#define MSI_ADDR_SIZE 0x100000 + typedef struct APICState { CPUState *cpu_env; uint32_t apicbase; @@ -712,11 +727,31 @@ static uint32_t apic_mem_readl(void *opaque, target_phys_addr_t addr) return val; } +static void apic_send_msi(target_phys_addr_t addr, uint32 data) +{ + uint8_t dest = (addr & MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_S...

Author: kucharsk Repository: /hg/zfs-crypto/gate Revision: 1ba8dc174f7355edbe8ab8aaf6ac96aef70eb746 Log message: 6352844 cpustat always returns same value for all events in single event specification on amd64 Files: update: usr/src/uts/intel/pcbe/opteron_pcbe.c

...--+------------+------------+------------+ + * | PV Node 0 | PV Node 1 | PV Node 2 | PV Node 3 | + * +------------+------------+------------+------------+ + */ +struct pv_qnode { + struct mcs_spinlock mcs; /* MCS node */ + struct mcs_spinlock __res[3]; /* 3 reserved MCS nodes */ + s8 cpustate; /* CPU status flag */ + s8 mayhalt; /* May be halted soon */ + int mycpu; /* CPU number of this node */ + struct mcs_spinlock *head; /* Queue head node pointer */ +}; + +/** + * pv_init_node - initialize fields in struct pv_qnode + * @node: pointer to struct mcs_spinlock + * @cpu :...

...--+------------+------------+------------+ + * | PV Node 0 | PV Node 1 | PV Node 2 | PV Node 3 | + * +------------+------------+------------+------------+ + */ +struct pv_qnode { + struct mcs_spinlock mcs; /* MCS node */ + struct mcs_spinlock __res[3]; /* 3 reserved MCS nodes */ + s8 cpustate; /* CPU status flag */ + s8 mayhalt; /* May be halted soon */ + int mycpu; /* CPU number of this node */ + struct mcs_spinlock *head; /* Queue head node pointer */ +}; + +/** + * pv_init_node - initialize fields in struct pv_qnode + * @node: pointer to struct mcs_spinlock + * @cpu :...