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#ifndef _ASM_POWERPC_DTL_H
#define _ASM_POWERPC_DTL_H
#include <linux/rwsem.h>
#include <asm/lppaca.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 struct rw_semaphore dtl_access_lock;
/*
* When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE = y, the cpu accounting code controls
* reading from the dispatch trace log. If other code wants to consume
* DTL entries, it can set this pointer to a function that will get
* called once for each DTL entry that gets processed.
*/
extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index);
extern void register_dtl_buffer(int cpu);
extern void alloc_dtl_buffers(unsigned long *time_limit);
extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);
#endif /* _ASM_POWERPC_DTL_H */