162306a36Sopenharmony_ci#ifndef _ASM_POWERPC_DTL_H 262306a36Sopenharmony_ci#define _ASM_POWERPC_DTL_H 362306a36Sopenharmony_ci 462306a36Sopenharmony_ci#include <asm/lppaca.h> 562306a36Sopenharmony_ci#include <linux/spinlock_types.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci/* 862306a36Sopenharmony_ci * Layout of entries in the hypervisor's dispatch trace log buffer. 962306a36Sopenharmony_ci */ 1062306a36Sopenharmony_cistruct dtl_entry { 1162306a36Sopenharmony_ci u8 dispatch_reason; 1262306a36Sopenharmony_ci u8 preempt_reason; 1362306a36Sopenharmony_ci __be16 processor_id; 1462306a36Sopenharmony_ci __be32 enqueue_to_dispatch_time; 1562306a36Sopenharmony_ci __be32 ready_to_enqueue_time; 1662306a36Sopenharmony_ci __be32 waiting_to_ready_time; 1762306a36Sopenharmony_ci __be64 timebase; 1862306a36Sopenharmony_ci __be64 fault_addr; 1962306a36Sopenharmony_ci __be64 srr0; 2062306a36Sopenharmony_ci __be64 srr1; 2162306a36Sopenharmony_ci}; 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */ 2462306a36Sopenharmony_ci#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry)) 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci/* 2762306a36Sopenharmony_ci * Dispatch trace log event enable mask: 2862306a36Sopenharmony_ci * 0x1: voluntary virtual processor waits 2962306a36Sopenharmony_ci * 0x2: time-slice preempts 3062306a36Sopenharmony_ci * 0x4: virtual partition memory page faults 3162306a36Sopenharmony_ci */ 3262306a36Sopenharmony_ci#define DTL_LOG_CEDE 0x1 3362306a36Sopenharmony_ci#define DTL_LOG_PREEMPT 0x2 3462306a36Sopenharmony_ci#define DTL_LOG_FAULT 0x4 3562306a36Sopenharmony_ci#define DTL_LOG_ALL (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT) 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciextern struct kmem_cache *dtl_cache; 3862306a36Sopenharmony_ciextern rwlock_t dtl_access_lock; 3962306a36Sopenharmony_ci 4062306a36Sopenharmony_ciextern void register_dtl_buffer(int cpu); 4162306a36Sopenharmony_ciextern void alloc_dtl_buffers(unsigned long *time_limit); 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci#endif /* _ASM_POWERPC_DTL_H */ 44