xnu-3248.20.55.tar.gz
[apple/xnu.git] / osfmk / kperf / kperf_kpc.h
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1c79356b 1/*
316670eb 2 * Copyright (c) 2011 Apple Computer, Inc. All rights reserved.
1c79356b 3 *
2d21ac55 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b 5 *
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6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
8f6c56a5 14 *
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15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5
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20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
8f6c56a5 25 *
2d21ac55 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b 27 */
1c79356b 28
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29#ifndef __KPERF_KPC_H__
30#define __KPERF_KPC_H__
1c79356b 31
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32#if KPC
33#include <kern/kpc.h> /* KPC_MAX_COUNTERS */
34#endif
b0d623f7 35
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36/* controls whether a context-switch handler is invoked */
37extern unsigned kperf_kpc_cswitch_set;
38
39void kperf_kpc_switch_context(thread_t old, thread_t new);
40void kperf_kpc_cswitch_callback_update(void);
41
42/* for osfmk/platform/pcb.c context switches */
43static inline void
44kperf_kpc_cswitch(thread_t old, thread_t new)
45{
46 if (!kperf_kpc_cswitch_set) {
47 return;
48 }
49
50 kperf_kpc_switch_context(old, new);
51}
52
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53/* KPC sample data */
54struct kpcdata
55{
56 int curcpu;
57 uint32_t running;
58 uint32_t counterc;
59 uint64_t counterv[KPC_MAX_COUNTERS+1];
60 uint32_t configc;
61 uint64_t configv[KPC_MAX_COUNTERS];
62};
1c79356b 63
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64void kperf_kpc_thread_sample(struct kpcdata *, int);
65void kperf_kpc_cpu_sample(struct kpcdata *, int);
66void kperf_kpc_thread_log(const struct kpcdata *);
67void kperf_kpc_cpu_log(const struct kpcdata *);
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68
69#endif /* __KPERF_KPC_H__ */