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kmemleak: When the early log buffer is exceeded, report the actual number

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Just telling that the early log buffer has been exceeded doesn't mean
much. This patch moves the error printing to the kmemleak_init()
function and displays the actual calls to the kmemleak API during early
logging.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas 2011-09-28 17:22:56 +01:00
parent 5f79020cb9
commit b66930052a
1 changed files with 15 additions and 6 deletions
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21
mm/kmemleak.c
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@ -797,9 +797,13 @@ static void __init log_early(int op_type, const void *ptr, size_t size,
unsigned long flags;
struct early_log *log;
if (atomic_read(&kmemleak_error)) {
/* kmemleak stopped recording, just count the requests */
crt_early_log++;
return;
}
if (crt_early_log >= ARRAY_SIZE(early_log)) {
pr_warning("Early log buffer exceeded, "
"please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE\n");
kmemleak_disable();
return;
}
@ -1634,7 +1638,6 @@ static void kmemleak_disable(void)
return;
/* stop any memory operation tracing */
atomic_set(&kmemleak_early_log, 0);
atomic_set(&kmemleak_enabled, 0);
/* check whether it is too early for a kernel thread */
@ -1694,12 +1697,18 @@ void __init kmemleak_init(void)
scan_area_cache = KMEM_CACHE(kmemleak_scan_area, SLAB_NOLEAKTRACE);
INIT_PRIO_TREE_ROOT(&object_tree_root);
if (crt_early_log >= ARRAY_SIZE(early_log))
pr_warning("Early log buffer exceeded (%d), please increase "
"DEBUG_KMEMLEAK_EARLY_LOG_SIZE\n", crt_early_log);
/* the kernel is still in UP mode, so disabling the IRQs is enough */
local_irq_save(flags);
if (!atomic_read(&kmemleak_error)) {
atomic_set(&kmemleak_early_log, 0);
if (atomic_read(&kmemleak_error)) {
local_irq_restore(flags);
return;
} else
atomic_set(&kmemleak_enabled, 1);
atomic_set(&kmemleak_early_log, 0);
}
local_irq_restore(flags);
/*