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In order to use <asm/percpu.h> in lockdep.h, we need to make sure asm/percpu.h does not itself depend on lockdep. The below seems to make that so and builds powerpc64-defconfig + PROVE_LOCKING. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> https://lkml.kernel.org/r/20200623083721.336906073@infradead.org
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
#ifndef _ASM_POWERPC_DTL_H
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#define _ASM_POWERPC_DTL_H
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#include <asm/lppaca.h>
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#include <linux/spinlock_types.h>
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/*
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* Layout of entries in the hypervisor's dispatch trace log buffer.
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*/
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struct dtl_entry {
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u8 dispatch_reason;
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u8 preempt_reason;
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__be16 processor_id;
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__be32 enqueue_to_dispatch_time;
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__be32 ready_to_enqueue_time;
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__be32 waiting_to_ready_time;
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__be64 timebase;
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__be64 fault_addr;
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__be64 srr0;
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__be64 srr1;
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};
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#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */
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#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))
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/*
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* Dispatch trace log event enable mask:
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* 0x1: voluntary virtual processor waits
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* 0x2: time-slice preempts
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* 0x4: virtual partition memory page faults
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*/
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#define DTL_LOG_CEDE 0x1
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#define DTL_LOG_PREEMPT 0x2
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#define DTL_LOG_FAULT 0x4
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#define DTL_LOG_ALL (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT)
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extern struct kmem_cache *dtl_cache;
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extern rwlock_t dtl_access_lock;
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/*
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* When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE = y, the cpu accounting code controls
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* reading from the dispatch trace log. If other code wants to consume
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* DTL entries, it can set this pointer to a function that will get
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* called once for each DTL entry that gets processed.
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*/
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extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index);
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extern void register_dtl_buffer(int cpu);
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extern void alloc_dtl_buffers(unsigned long *time_limit);
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extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);
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#endif /* _ASM_POWERPC_DTL_H */
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