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Commit 2565a21f authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "kmemleak : Make kmemleak_stack_scan optional using config"

parents 1a69d015 55048cd0

lib/Kconfig.debug

+9 −0
Original line number Diff line number Diff line
@@ -934,6 +934,15 @@ config DEBUG_MODULE_SCAN_OFF 
	  run with irq/preemption disabled for considerable amount

	  of time.



config DEBUG_TASK_STACK_SCAN_OFF

	bool "Disable kmemleak task stack scan by default"

	depends on DEBUG_KMEMLEAK

	help

	  Say Y here to disable kmemleak task stack scan by default

	  at compile time. It can be enabled later if required by

	  writing to the debugfs entry :

	  echo "stack=on" > /sys/kernel/debug/kmemleak.



config DEBUG_PREEMPT

	bool "Debug preemptible kernel"

	depends on DEBUG_KERNEL && PREEMPT && TRACE_IRQFLAGS_SUPPORT

mm/kmemleak.c

+11 −1
Original line number Diff line number Diff line
@@ -215,8 +215,18 @@ static unsigned long jiffies_min_age; 
static unsigned long jiffies_last_scan;

/* delay between automatic memory scannings */

static signed long jiffies_scan_wait;

/* enables or disables the task stacks scanning */



/* Enables or disables the task stacks scanning.

 * Set to 1 if at compile time we want it enabled.

 * Else set to 0 to have it disabled by default.

 * This can be enabled by writing to "stack=on" using

 * kmemleak debugfs entry.*/

#ifdef CONFIG_DEBUG_TASK_STACK_SCAN_OFF

static int kmemleak_stack_scan;

#else

static int kmemleak_stack_scan = 1;

#endif



/* protects the memory scanning, parameters and debug/kmemleak file access */

static DEFINE_MUTEX(scan_mutex);

/* setting kmemleak=on, will set this var, skipping the disable */