projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2521f2c2 PO |
2 | /* |
| 3 | * Profiling infrastructure declarations. | |
| 4 | * | |
| 5 | * This file is based on gcc-internal definitions. Data structures are | |
| 6 | * defined to be compatible with gcc counterparts. For a better | |
| 7 | * understanding, refer to gcc source: gcc/gcov-io.h. | |
| 8 | * | |
| 9 | * Copyright IBM Corp. 2009 | |
| 10 | * Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com> | |
| 11 | * | |
| 12 | * Uses gcc-internal data definitions. | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef GCOV_H | |
| 16 | #define GCOV_H GCOV_H | |
| 17 | ||
| e178a5be | 18 | #include <linux/module.h> |
| 2521f2c2 PO |
19 | #include <linux/types.h> |
| 20 | ||
| 21 | /* | |
| 22 | * Profiling data types used for gcc 3.4 and above - these are defined by | |
| 23 | * gcc and need to be kept as close to the original definition as possible to | |
| 24 | * remain compatible. | |
| 25 | */ | |
| 2521f2c2 PO |
26 | #define GCOV_DATA_MAGIC ((unsigned int) 0x67636461) |
| 27 | #define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000) | |
| 28 | #define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000) | |
| 29 | #define GCOV_TAG_FOR_COUNTER(count) \ | |
| 30 | (GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17)) | |
| 31 | ||
| 32 | #if BITS_PER_LONG >= 64 | |
| 33 | typedef long gcov_type; | |
| 34 | #else | |
| 35 | typedef long long gcov_type; | |
| 36 | #endif | |
| 37 | ||
| 8cbce376 FH |
38 | /* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so |
| 39 | * we cannot use full definition here and they need to be placed in gcc specific | |
| 40 | * implementation of gcov. This also means no direct access to the members in | |
| 41 | * generic code and usage of the interface below.*/ | |
| 42 | struct gcov_info; | |
| 43 | ||
| 44 | /* Interface to access gcov_info data */ | |
| 45 | const char *gcov_info_filename(struct gcov_info *info); | |
| 46 | unsigned int gcov_info_version(struct gcov_info *info); | |
| 47 | struct gcov_info *gcov_info_next(struct gcov_info *info); | |
| 48 | void gcov_info_link(struct gcov_info *info); | |
| 49 | void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info); | |
| e178a5be | 50 | bool gcov_info_within_module(struct gcov_info *info, struct module *mod); |
| 2521f2c2 PO |
51 | |
| 52 | /* Base interface. */ | |
| 53 | enum gcov_action { | |
| 54 | GCOV_ADD, | |
| 55 | GCOV_REMOVE, | |
| 56 | }; | |
| 57 | ||
| 58 | void gcov_event(enum gcov_action action, struct gcov_info *info); | |
| 59 | void gcov_enable_events(void); | |
| 60 | ||
| 61 | /* Iterator control. */ | |
| 62 | struct seq_file; | |
| 63 | struct gcov_iterator; | |
| 64 | ||
| 65 | struct gcov_iterator *gcov_iter_new(struct gcov_info *info); | |
| 66 | void gcov_iter_free(struct gcov_iterator *iter); | |
| 67 | void gcov_iter_start(struct gcov_iterator *iter); | |
| 68 | int gcov_iter_next(struct gcov_iterator *iter); | |
| 69 | int gcov_iter_write(struct gcov_iterator *iter, struct seq_file *seq); | |
| 70 | struct gcov_info *gcov_iter_get_info(struct gcov_iterator *iter); | |
| 71 | ||
| 72 | /* gcov_info control. */ | |
| 73 | void gcov_info_reset(struct gcov_info *info); | |
| 74 | int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2); | |
| 75 | void gcov_info_add(struct gcov_info *dest, struct gcov_info *source); | |
| 76 | struct gcov_info *gcov_info_dup(struct gcov_info *info); | |
| 77 | void gcov_info_free(struct gcov_info *info); | |
| 78 | ||
| 79 | struct gcov_link { | |
| 80 | enum { | |
| 81 | OBJ_TREE, | |
| 82 | SRC_TREE, | |
| 83 | } dir; | |
| 84 | const char *ext; | |
| 85 | }; | |
| 86 | extern const struct gcov_link gcov_link[]; | |
| 87 | ||
| 826eba0d GH |
88 | extern int gcov_events_enabled; |
| 89 | extern struct mutex gcov_lock; | |
| 90 | ||
| 2521f2c2 | 91 | #endif /* GCOV_H */ |