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Add stacktrace kernelcompat

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Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2025-10-28 14:13:10 -07:00
parent 4b41cf9789
commit 38a2ffe0c7
2 changed files with 34 additions and 0 deletions
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8
kmod/src/Makefile.kernelcompat
View File

@@ -462,3 +462,11 @@ ifneq (,$(shell grep 'struct list_lru_one \*list, spinlock_t \*lock, void \*cb_a
ccflags-y += -DKC_LIST_LRU_WALK_CB_LIST_LOCK
endif
#
# v5.1-rc4-273-ge9b98e162aa5
#
# introduce stack trace helpers
#
ifneq (,$(shell grep '^unsigned int stack_trace_save' include/linux/stacktrace.h))
ccflags-y += -DKC_STACK_TRACE_SAVE
endif

26
kmod/src/kernelcompat.h
View File

@@ -457,4 +457,30 @@ static inline void list_lru_isolate_move(struct list_lru_one *list, struct list_
}
#endif
#ifndef KC_STACK_TRACE_SAVE
#include <linux/stacktrace.h>
static inline unsigned int stack_trace_save(unsigned long *store, unsigned int size,
unsigned int skipnr)
{
struct stack_trace trace = {
.entries = store,
.max_entries = size,
.skip = skipnr,
};
save_stack_trace(&trace);
return trace.nr_entries;
}
static inline void stack_trace_print(unsigned long *entries, unsigned int nr_entries, int spaces)
{
struct stack_trace trace = {
.entries = entries,
.nr_entries = nr_entries,
};
print_stack_trace(&trace, spaces);
}
#endif
#endif