| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_STACKLEAK_H |
| #define _LINUX_STACKLEAK_H |
| |
| #include <linux/sched.h> |
| #include <linux/sched/task_stack.h> |
| |
| /* |
| * Check that the poison value points to the unused hole in the |
| * virtual memory map for your platform. |
| */ |
| #define STACKLEAK_POISON -0xBEEF |
| #define STACKLEAK_SEARCH_DEPTH 128 |
| |
| #ifdef CONFIG_GCC_PLUGIN_STACKLEAK |
| #include <asm/stacktrace.h> |
| |
| static inline void stackleak_task_init(struct task_struct *t) |
| { |
| t->lowest_stack = (unsigned long)end_of_stack(t) + sizeof(unsigned long); |
| # ifdef CONFIG_STACKLEAK_METRICS |
| t->prev_lowest_stack = t->lowest_stack; |
| # endif |
| } |
| |
| #else /* !CONFIG_GCC_PLUGIN_STACKLEAK */ |
| static inline void stackleak_task_init(struct task_struct *t) { } |
| #endif |
| |
| #endif |