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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_KCOV_H#define _LINUX_KCOV_H
#include <linux/sched.h>#include <uapi/linux/kcov.h>
struct task_struct;
#ifdef CONFIG_KCOV
enum kcov_mode { /* Coverage collection is not enabled yet. */ KCOV_MODE_DISABLED = 0, /* KCOV was initialized, but tracing mode hasn't been chosen yet. */ KCOV_MODE_INIT = 1, /* * Tracing coverage collection mode. * Covered PCs are collected in a per-task buffer. */ KCOV_MODE_TRACE_PC = 2, /* Collecting comparison operands mode. */ KCOV_MODE_TRACE_CMP = 3,};
#define KCOV_IN_CTXSW (1 << 30)
void kcov_task_init(struct task_struct *t);void kcov_task_exit(struct task_struct *t);
#define kcov_prepare_switch(t) \do { \ (t)->kcov_mode |= KCOV_IN_CTXSW; \} while (0)
#define kcov_finish_switch(t) \do { \ (t)->kcov_mode &= ~KCOV_IN_CTXSW; \} while (0)
/* See Documentation/dev-tools/kcov.rst for usage details. */void kcov_remote_start(u64 handle);void kcov_remote_stop(void);struct kcov_common_handle_id kcov_common_handle(void);
static inline void kcov_remote_start_common(struct kcov_common_handle_id id){ kcov_remote_start(kcov_remote_handle(KCOV_SUBSYSTEM_COMMON, id.val));}
static inline void kcov_remote_start_usb(u64 id){ kcov_remote_start(kcov_remote_handle(KCOV_SUBSYSTEM_USB, id));}
/* * The softirq flavor of kcov_remote_*() functions is introduced as a temporary * work around for kcov's lack of nested remote coverage sections support in * task context. Adding support for nested sections is tracked in: * https://bugzilla.kernel.org/show_bug.cgi?id=210337 */
static inline void kcov_remote_start_usb_softirq(u64 id){ if (in_serving_softirq() && !in_hardirq()) kcov_remote_start_usb(id);}
static inline void kcov_remote_stop_softirq(void){ if (in_serving_softirq() && !in_hardirq()) kcov_remote_stop();}
#ifdef CONFIG_64BITtypedef unsigned long kcov_u64;#elsetypedef unsigned long long kcov_u64;#endif
void __sanitizer_cov_trace_pc(void);void __sanitizer_cov_trace_cmp1(u8 arg1, u8 arg2);void __sanitizer_cov_trace_cmp2(u16 arg1, u16 arg2);void __sanitizer_cov_trace_cmp4(u32 arg1, u32 arg2);void __sanitizer_cov_trace_cmp8(kcov_u64 arg1, kcov_u64 arg2);void __sanitizer_cov_trace_const_cmp1(u8 arg1, u8 arg2);void __sanitizer_cov_trace_const_cmp2(u16 arg1, u16 arg2);void __sanitizer_cov_trace_const_cmp4(u32 arg1, u32 arg2);void __sanitizer_cov_trace_const_cmp8(kcov_u64 arg1, kcov_u64 arg2);void __sanitizer_cov_trace_switch(kcov_u64 val, void *cases);
#else
static inline void kcov_task_init(struct task_struct *t) {}static inline void kcov_task_exit(struct task_struct *t) {}static inline void kcov_prepare_switch(struct task_struct *t) {}static inline void kcov_finish_switch(struct task_struct *t) {}static inline void kcov_remote_start(u64 handle) {}static inline void kcov_remote_stop(void) {}static inline struct kcov_common_handle_id kcov_common_handle(void){ return (struct kcov_common_handle_id){};}static inline void kcov_remote_start_common(struct kcov_common_handle_id id) {}static inline void kcov_remote_start_usb(u64 id) {}static inline void kcov_remote_start_usb_softirq(u64 id) {}static inline void kcov_remote_stop_softirq(void) {}
#endif /* CONFIG_KCOV */#endif /* _LINUX_KCOV_H */