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Diffstat (limited to 'arch/powerpc/include/asm/dtl.h')
| -rw-r--r-- | arch/powerpc/include/asm/dtl.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/dtl.h b/arch/powerpc/include/asm/dtl.h new file mode 100644 index 0000000000..d6f43d149f --- /dev/null +++ b/arch/powerpc/include/asm/dtl.h @@ -0,0 +1,43 @@ +#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 */ |