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lib/stackdepot: rename stack_depot_disable

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Rename stack_depot_disable to stack_depot_disabled to make its name look
similar to the names of other stack depot flags.

Also put stack_depot_disabled's definition together with the other flags.

Also rename is_stack_depot_disabled to disable_stack_depot: this name
looks more conventional for a function that processes a boot parameter.

No functional changes.

Link: https://lkml.kernel.org/r/d78a07d222e689926e5ead229e4a2e3d87dc9aa7.1676063693.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Andrey Konovalov
2023-02-10 22:15:52 +01:00
committed by Andrew Morton
parent 1c0310add7
commit 735df3c3a3
1 changed files with 10 additions and 10 deletions
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20
lib/stackdepot.c
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@@ -71,6 +71,7 @@ struct stack_record {
unsigned long entries[]; /* Variable-sized array of entries. */ unsigned long entries[]; /* Variable-sized array of entries. */
}; };
static bool stack_depot_disabled;
static bool __stack_depot_early_init_requested __initdata = IS_ENABLED(CONFIG_STACKDEPOT_ALWAYS_INIT); static bool __stack_depot_early_init_requested __initdata = IS_ENABLED(CONFIG_STACKDEPOT_ALWAYS_INIT);
static bool __stack_depot_early_init_passed __initdata; static bool __stack_depot_early_init_passed __initdata;
@@ -91,21 +92,20 @@ static DEFINE_RAW_SPINLOCK(depot_lock);
static unsigned int stack_hash_order; static unsigned int stack_hash_order;
static unsigned int stack_hash_mask; static unsigned int stack_hash_mask;
static bool stack_depot_disable;
static struct stack_record **stack_table; static struct stack_record **stack_table;
static int __init is_stack_depot_disabled(char *str) static int __init disable_stack_depot(char *str)
{ {
int ret; int ret;
ret = kstrtobool(str, &stack_depot_disable); ret = kstrtobool(str, &stack_depot_disabled);
if (!ret && stack_depot_disable) { if (!ret && stack_depot_disabled) {
pr_info("disabled\n"); pr_info("disabled\n");
stack_table = NULL; stack_table = NULL;
} }
return 0; return 0;
} }
early_param("stack_depot_disable", is_stack_depot_disabled); early_param("stack_depot_disable", disable_stack_depot);
void __init stack_depot_request_early_init(void) void __init stack_depot_request_early_init(void)
{ {
@@ -128,7 +128,7 @@ int __init stack_depot_early_init(void)
if (kasan_enabled() && !stack_hash_order) if (kasan_enabled() && !stack_hash_order)
stack_hash_order = STACK_HASH_ORDER_MAX; stack_hash_order = STACK_HASH_ORDER_MAX;
if (!__stack_depot_early_init_requested || stack_depot_disable) if (!__stack_depot_early_init_requested || stack_depot_disabled)
return 0; return 0;
if (stack_hash_order) if (stack_hash_order)
@@ -145,7 +145,7 @@ int __init stack_depot_early_init(void)
if (!stack_table) { if (!stack_table) {
pr_err("hash table allocation failed, disabling\n"); pr_err("hash table allocation failed, disabling\n");
stack_depot_disable = true; stack_depot_disabled = true;
return -ENOMEM; return -ENOMEM;
} }
@@ -158,7 +158,7 @@ int stack_depot_init(void)
int ret = 0; int ret = 0;
mutex_lock(&stack_depot_init_mutex); mutex_lock(&stack_depot_init_mutex);
if (!stack_depot_disable && !stack_table) { if (!stack_depot_disabled && !stack_table) {
unsigned long entries; unsigned long entries;
int scale = STACK_HASH_SCALE; int scale = STACK_HASH_SCALE;
@@ -184,7 +184,7 @@ int stack_depot_init(void)
stack_table = kvcalloc(entries, sizeof(struct stack_record *), GFP_KERNEL); stack_table = kvcalloc(entries, sizeof(struct stack_record *), GFP_KERNEL);
if (!stack_table) { if (!stack_table) {
pr_err("hash table allocation failed, disabling\n"); pr_err("hash table allocation failed, disabling\n");
stack_depot_disable = true; stack_depot_disabled = true;
ret = -ENOMEM; ret = -ENOMEM;
} }
stack_hash_mask = entries - 1; stack_hash_mask = entries - 1;
@@ -353,7 +353,7 @@ depot_stack_handle_t __stack_depot_save(unsigned long *entries,
*/ */
nr_entries = filter_irq_stacks(entries, nr_entries); nr_entries = filter_irq_stacks(entries, nr_entries);
if (unlikely(nr_entries == 0) || stack_depot_disable) if (unlikely(nr_entries == 0) || stack_depot_disabled)
goto fast_exit; goto fast_exit;
hash = hash_stack(entries, nr_entries); hash = hash_stack(entries, nr_entries);