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d1f0258105
These two functions allow selftests to do loading/searching kallsyms based on their specific compare functions. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20240326041513.1199440-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TRACE_HELPER_H
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#define __TRACE_HELPER_H
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#include <bpf/libbpf.h>
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#define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
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#define ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a)-1)
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struct ksym {
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long addr;
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char *name;
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};
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struct ksyms;
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typedef int (*ksym_cmp_t)(const void *p1, const void *p2);
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typedef int (*ksym_search_cmp_t)(const void *p1, const struct ksym *p2);
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int load_kallsyms(void);
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struct ksym *ksym_search(long key);
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long ksym_get_addr(const char *name);
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struct ksyms *load_kallsyms_local(void);
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struct ksym *ksym_search_local(struct ksyms *ksyms, long key);
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long ksym_get_addr_local(struct ksyms *ksyms, const char *name);
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void free_kallsyms_local(struct ksyms *ksyms);
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struct ksyms *load_kallsyms_custom_local(ksym_cmp_t cmp_cb);
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struct ksym *search_kallsyms_custom_local(struct ksyms *ksyms, const void *p1,
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ksym_search_cmp_t cmp_cb);
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/* open kallsyms and find addresses on the fly, faster than load + search. */
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int kallsyms_find(const char *sym, unsigned long long *addr);
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void read_trace_pipe(void);
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ssize_t get_uprobe_offset(const void *addr);
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ssize_t get_rel_offset(uintptr_t addr);
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int read_build_id(const char *path, char *build_id, size_t size);
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#endif
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