linux-master/lib/stackdepot.c

369 static inline size_t depot_stack_record_size(struct stack_record *s, unsigned int nr_entries)
371 	const size_t used = flex_array_size(s, entries, nr_entries);
381 depot_alloc_stack(unsigned long *entries, unsigned int nr_entries, u32 hash, depot_flags_t flags, void **prealloc)
389 	if (WARN_ON_ONCE(!nr_entries))
393 	if (nr_entries > CONFIG_STACKDEPOT_MAX_FRAMES)
394 		nr_entries = CONFIG_STACKDEPOT_MAX_FRAMES;
404 		record_size = depot_stack_record_size(stack, nr_entries);
415 	stack->size = nr_entries;
417 	memcpy(stack->entries, entries, flex_array_size(stack, entries, nr_entries));
585 					    unsigned int nr_entries,
609 	nr_entries = filter_irq_stacks(entries, nr_entries);
611 	if (unlikely(nr_entries == 0) || stack_depot_disabled)
614 	hash = hash_stack(entries, nr_entries);
618 	found = find_stack(bucket, entries, nr_entries, hash, depot_flags);
644 	found = find_stack(bucket, entries, nr_entries, hash, depot_flags);
647 			depot_alloc_stack(entries, nr_entries, hash, depot_flags, &prealloc);
682 				      unsigned int nr_entries,
685 	return stack_depot_save_flags(entries, nr_entries, alloc_flags,
749 	unsigned int nr_entries;
751 	nr_entries = stack_depot_fetch(stack, &entries);
752 	if (nr_entries > 0)
753 		stack_trace_print(entries, nr_entries, 0);
761 	unsigned int nr_entries;
763 	nr_entries = stack_depot_fetch(handle, &entries);
764 	return nr_entries ? stack_trace_snprint(buf, size, entries, nr_entries,