mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.4 KiB
93 lines
2.4 KiB
/* 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 suport 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(); |
|
} |
|
|
|
#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 */
|
|
|