1*4882a593Smuzhiyun #ifndef _ASM_POWERPC_DTL_H 2*4882a593Smuzhiyun #define _ASM_POWERPC_DTL_H 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #include <asm/lppaca.h> 5*4882a593Smuzhiyun #include <linux/spinlock_types.h> 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* 8*4882a593Smuzhiyun * Layout of entries in the hypervisor's dispatch trace log buffer. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun struct dtl_entry { 11*4882a593Smuzhiyun u8 dispatch_reason; 12*4882a593Smuzhiyun u8 preempt_reason; 13*4882a593Smuzhiyun __be16 processor_id; 14*4882a593Smuzhiyun __be32 enqueue_to_dispatch_time; 15*4882a593Smuzhiyun __be32 ready_to_enqueue_time; 16*4882a593Smuzhiyun __be32 waiting_to_ready_time; 17*4882a593Smuzhiyun __be64 timebase; 18*4882a593Smuzhiyun __be64 fault_addr; 19*4882a593Smuzhiyun __be64 srr0; 20*4882a593Smuzhiyun __be64 srr1; 21*4882a593Smuzhiyun }; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */ 24*4882a593Smuzhiyun #define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry)) 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun /* 27*4882a593Smuzhiyun * Dispatch trace log event enable mask: 28*4882a593Smuzhiyun * 0x1: voluntary virtual processor waits 29*4882a593Smuzhiyun * 0x2: time-slice preempts 30*4882a593Smuzhiyun * 0x4: virtual partition memory page faults 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun #define DTL_LOG_CEDE 0x1 33*4882a593Smuzhiyun #define DTL_LOG_PREEMPT 0x2 34*4882a593Smuzhiyun #define DTL_LOG_FAULT 0x4 35*4882a593Smuzhiyun #define DTL_LOG_ALL (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT) 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun extern struct kmem_cache *dtl_cache; 38*4882a593Smuzhiyun extern rwlock_t dtl_access_lock; 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun /* 41*4882a593Smuzhiyun * When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE = y, the cpu accounting code controls 42*4882a593Smuzhiyun * reading from the dispatch trace log. If other code wants to consume 43*4882a593Smuzhiyun * DTL entries, it can set this pointer to a function that will get 44*4882a593Smuzhiyun * called once for each DTL entry that gets processed. 45*4882a593Smuzhiyun */ 46*4882a593Smuzhiyun extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index); 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun extern void register_dtl_buffer(int cpu); 49*4882a593Smuzhiyun extern void alloc_dtl_buffers(unsigned long *time_limit); 50*4882a593Smuzhiyun extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity); 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #endif /* _ASM_POWERPC_DTL_H */ 53