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025bd7c753
This test uses bpf_get_branch_snapshot from a fexit program. The test uses a target function (bpf_testmod_loop_test) and compares the record against kallsyms. If there isn't enough record matching kallsyms, the test fails. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20210910183352.3151445-4-songliubraving@fb.com
30 lines
731 B
C
30 lines
731 B
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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struct ksym {
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long addr;
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char *name;
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};
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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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/* 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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/* find the address of the next symbol, this can be used to determine the
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* end of a function
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*/
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int kallsyms_find_next(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, ssize_t base);
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ssize_t get_base_addr(void);
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ssize_t get_rel_offset(uintptr_t addr);
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#endif
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