Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andrey Konovalov |
160 |
38.10% |
2 |
15.38% |
| Dmitriy Vyukov |
105 |
25.00% |
2 |
15.38% |
| Victor Chibotaru |
50 |
11.90% |
1 |
7.69% |
| Arnd Bergmann |
48 |
11.43% |
1 |
7.69% |
| Mark Rutland |
28 |
6.67% |
1 |
7.69% |
| Pavel Machek |
20 |
4.76% |
1 |
7.69% |
| Sebastian Andrzej Siewior |
3 |
0.71% |
1 |
7.69% |
| Paul Turner |
2 |
0.48% |
1 |
7.69% |
| Roland McGrath |
2 |
0.48% |
1 |
7.69% |
| Greg Kroah-Hartman |
1 |
0.24% |
1 |
7.69% |
| Rong Tao |
1 |
0.24% |
1 |
7.69% |
| Total |
420 |
|
13 |
|
/* 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);
u64 kcov_common_handle(void);
static inline void kcov_remote_start_common(u64 id)
{
kcov_remote_start(kcov_remote_handle(KCOV_SUBSYSTEM_COMMON, id));
}
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())
kcov_remote_start_usb(id);
}
static inline void kcov_remote_stop_softirq(void)
{
if (in_serving_softirq())
kcov_remote_stop();
}
#ifdef CONFIG_64BIT
typedef unsigned long kcov_u64;
#else
typedef 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 u64 kcov_common_handle(void)
{
return 0;
}
static inline void kcov_remote_start_common(u64 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 */