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https://github.com/torvalds/linux
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7a1d55b987
There's a lot of duplicated code between gcc and clang implementations, move it over to fs.c to simplify the code, there's no reason to believe that for small data like this one would not just implement the simple convert_to_gcda() function. Link: https://lkml.kernel.org/r/20210315235453.e3fbb86e99a0.I08a3ee6dbe47ea3e8024956083f162884a958e40@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Profiling infrastructure declarations.
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*
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* This file is based on gcc-internal definitions. Data structures are
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* defined to be compatible with gcc counterparts. For a better
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* understanding, refer to gcc source: gcc/gcov-io.h.
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*
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* Copyright IBM Corp. 2009
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* Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
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*
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* Uses gcc-internal data definitions.
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*/
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#ifndef GCOV_H
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#define GCOV_H GCOV_H
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#include <linux/module.h>
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#include <linux/types.h>
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/*
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* Profiling data types used for gcc 3.4 and above - these are defined by
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* gcc and need to be kept as close to the original definition as possible to
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* remain compatible.
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*/
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#define GCOV_DATA_MAGIC ((unsigned int) 0x67636461)
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#define GCOV_TAG_FUNCTION ((unsigned int) 0x01000000)
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#define GCOV_TAG_COUNTER_BASE ((unsigned int) 0x01a10000)
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#define GCOV_TAG_FOR_COUNTER(count) \
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(GCOV_TAG_COUNTER_BASE + ((unsigned int) (count) << 17))
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#if BITS_PER_LONG >= 64
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typedef long gcov_type;
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#else
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typedef long long gcov_type;
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#endif
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/* Opaque gcov_info. The gcov structures can change as for example in gcc 4.7 so
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* we cannot use full definition here and they need to be placed in gcc specific
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* implementation of gcov. This also means no direct access to the members in
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* generic code and usage of the interface below.*/
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struct gcov_info;
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/* Interface to access gcov_info data */
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const char *gcov_info_filename(struct gcov_info *info);
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unsigned int gcov_info_version(struct gcov_info *info);
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struct gcov_info *gcov_info_next(struct gcov_info *info);
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void gcov_info_link(struct gcov_info *info);
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void gcov_info_unlink(struct gcov_info *prev, struct gcov_info *info);
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bool gcov_info_within_module(struct gcov_info *info, struct module *mod);
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size_t convert_to_gcda(char *buffer, struct gcov_info *info);
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/* Base interface. */
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enum gcov_action {
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GCOV_ADD,
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GCOV_REMOVE,
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};
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void gcov_event(enum gcov_action action, struct gcov_info *info);
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void gcov_enable_events(void);
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/* writing helpers */
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size_t store_gcov_u32(void *buffer, size_t off, u32 v);
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size_t store_gcov_u64(void *buffer, size_t off, u64 v);
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/* gcov_info control. */
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void gcov_info_reset(struct gcov_info *info);
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int gcov_info_is_compatible(struct gcov_info *info1, struct gcov_info *info2);
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void gcov_info_add(struct gcov_info *dest, struct gcov_info *source);
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struct gcov_info *gcov_info_dup(struct gcov_info *info);
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void gcov_info_free(struct gcov_info *info);
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struct gcov_link {
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enum {
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OBJ_TREE,
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SRC_TREE,
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} dir;
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const char *ext;
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};
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extern const struct gcov_link gcov_link[];
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extern int gcov_events_enabled;
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extern struct mutex gcov_lock;
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#endif /* GCOV_H */
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