69 	unsigned long entries[];	/* Variable-sized array of entries. */  member
120 depot_alloc_stack(unsigned long *entries, int size, u32 hash, void **prealloc)  in depot_alloc_stack()  argument
123 	size_t required_size = struct_size(stack, entries, size);  in depot_alloc_stack()
154 	memcpy(stack->entries, entries, flex_array_size(stack, entries, size));  in depot_alloc_stack()
196 	unsigned long entries = 0;  in stack_depot_early_init()  local
211 		entries = 1UL <<  stack_hash_order;  in stack_depot_early_init()
214 						entries,  in stack_depot_early_init()
238 		unsigned long entries;  in stack_depot_init()  local
242 			entries = 1UL << stack_hash_order;  in stack_depot_init()
244 			entries = nr_free_buffer_pages();  in stack_depot_init()
245 			entries = roundup_pow_of_two(entries);  in stack_depot_init()
248 				entries >>= (scale - PAGE_SHIFT);  in stack_depot_init()
250 				entries <<= (PAGE_SHIFT - scale);  in stack_depot_init()
253 		if (entries < 1UL << STACK_HASH_ORDER_MIN)  in stack_depot_init()
254 			entries = 1UL << STACK_HASH_ORDER_MIN;  in stack_depot_init()
255 		if (entries > 1UL << STACK_HASH_ORDER_MAX)  in stack_depot_init()
256 			entries = 1UL << STACK_HASH_ORDER_MAX;  in stack_depot_init()
258 		pr_info("Stack Depot allocating hash table of %lu entries with kvcalloc\n",  in stack_depot_init()
259 				entries);  in stack_depot_init()
260 		stack_table = kvcalloc(entries, sizeof(struct stack_record *), GFP_KERNEL);  in stack_depot_init()
266 		stack_hash_mask = entries - 1;  in stack_depot_init()
274 static inline u32 hash_stack(unsigned long *entries, unsigned int size)  in hash_stack()  argument
276 	return jhash2((u32 *)entries,  in hash_stack()
277 		      array_size(size,  sizeof(*entries)) / sizeof(u32),  in hash_stack()
296 /* Find a stack that is equal to the one stored in entries in the hash */
298 					     unsigned long *entries, int size,  in find_stack()  argument
306 		    !stackdepot_memcmp(entries, found->entries, size))  in find_stack()
313  * stack_depot_snprint - print stack entries from a depot into a buffer
328 	unsigned long *entries;  in stack_depot_snprint()  local
331 	nr_entries = stack_depot_fetch(handle, &entries);  in stack_depot_snprint()
332 	return nr_entries ? stack_trace_snprint(buf, size, entries, nr_entries,  in stack_depot_snprint()
338  * stack_depot_print - print stack entries from a depot
346 	unsigned long *entries;  in stack_depot_print()  local
349 	nr_entries = stack_depot_fetch(stack, &entries);  in stack_depot_print()
351 		stack_trace_print(entries, nr_entries, 0);  in stack_depot_print()
356  * stack_depot_fetch - Fetch stack entries from a depot
360  * @entries:		Pointer to store the entries address
362  * Return: The number of trace entries for this depot.
365 			       unsigned long **entries)  in stack_depot_fetch()  argument
372 	*entries = NULL;  in stack_depot_fetch()
386 	*entries = stack->entries;  in stack_depot_fetch()
394  * @entries:		Pointer to storage array
400  * Saves a stack trace from @entries array of size @nr_entries. If @can_alloc is
405  * If the stack trace in @entries is from an interrupt, only the portion up to
419 depot_stack_handle_t __stack_depot_save(unsigned long *entries,  in __stack_depot_save()  argument
439 	nr_entries = filter_irq_stacks(entries, nr_entries);  in __stack_depot_save()
444 	hash = hash_stack(entries, nr_entries);  in __stack_depot_save()
452 	found = find_stack(smp_load_acquire(bucket), entries,  in __stack_depot_save()
481 	found = find_stack(*bucket, entries, nr_entries, hash);  in __stack_depot_save()
483 		struct stack_record *new = depot_alloc_stack(entries, nr_entries, hash, &prealloc);  in __stack_depot_save()
520  * @entries:		Pointer to storage array
529 depot_stack_handle_t stack_depot_save(unsigned long *entries,  in stack_depot_save()  argument
533 	return __stack_depot_save(entries, nr_entries, 0, alloc_flags, true);  in stack_depot_save()