| #ifndef _ASM_POWERPC_DTL_H |
| #define _ASM_POWERPC_DTL_H |
| |
| #include <asm/lppaca.h> |
| #include <linux/spinlock_types.h> |
| |
| /* |
| * Layout of entries in the hypervisor's dispatch trace log buffer. |
| */ |
| struct dtl_entry { |
| u8 dispatch_reason; |
| u8 preempt_reason; |
| __be16 processor_id; |
| __be32 enqueue_to_dispatch_time; |
| __be32 ready_to_enqueue_time; |
| __be32 waiting_to_ready_time; |
| __be64 timebase; |
| __be64 fault_addr; |
| __be64 srr0; |
| __be64 srr1; |
| }; |
| |
| #define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */ |
| #define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry)) |
| |
| /* |
| * Dispatch trace log event enable mask: |
| * 0x1: voluntary virtual processor waits |
| * 0x2: time-slice preempts |
| * 0x4: virtual partition memory page faults |
| */ |
| #define DTL_LOG_CEDE 0x1 |
| #define DTL_LOG_PREEMPT 0x2 |
| #define DTL_LOG_FAULT 0x4 |
| #define DTL_LOG_ALL (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT) |
| |
| extern struct kmem_cache *dtl_cache; |
| extern rwlock_t dtl_access_lock; |
| |
| extern void register_dtl_buffer(int cpu); |
| extern void alloc_dtl_buffers(unsigned long *time_limit); |
| |
| #endif /* _ASM_POWERPC_DTL_H */ |
