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Commit 456c38f9 authored by David S. Miller's avatar David S. Miller
Browse files

[WANROUTER]: Kill kmalloc debugging code. 



It duplicates what SLAB debug can do already.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 905eee00

net/wanrouter/wanmain.c

+0 −57
Original line number Diff line number Diff line
@@ -62,63 +62,6 @@ 


#define KMEM_SAFETYZONE 8



/***********FOR DEBUGGING PURPOSES*********************************************

static void * dbg_kmalloc(unsigned int size, int prio, int line) {

	int i = 0;

	void * v = kmalloc(size+sizeof(unsigned int)+2*KMEM_SAFETYZONE*8,prio);

	char * c1 = v;

	c1 += sizeof(unsigned int);

	*((unsigned int *)v) = size;



	for (i = 0; i < KMEM_SAFETYZONE; i++) {

		c1[0] = 'D'; c1[1] = 'E'; c1[2] = 'A'; c1[3] = 'D';

		c1[4] = 'B'; c1[5] = 'E'; c1[6] = 'E'; c1[7] = 'F';

		c1 += 8;

	}

	c1 += size;

	for (i = 0; i < KMEM_SAFETYZONE; i++) {

		c1[0] = 'M'; c1[1] = 'U'; c1[2] = 'N'; c1[3] = 'G';

		c1[4] = 'W'; c1[5] = 'A'; c1[6] = 'L'; c1[7] = 'L';

		c1 += 8;

	}

	v = ((char *)v) + sizeof(unsigned int) + KMEM_SAFETYZONE*8;

	printk(KERN_INFO "line %d  kmalloc(%d,%d) = %p\n",line,size,prio,v);

	return v;

}

static void dbg_kfree(void * v, int line) {

	unsigned int * sp = (unsigned int *)(((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8));

	unsigned int size = *sp;

	char * c1 = ((char *)v) - KMEM_SAFETYZONE*8;

	int i = 0;

	for (i = 0; i < KMEM_SAFETYZONE; i++) {

		if (   c1[0] != 'D' || c1[1] != 'E' || c1[2] != 'A' || c1[3] != 'D'

		    || c1[4] != 'B' || c1[5] != 'E' || c1[6] != 'E' || c1[7] != 'F') {

			printk(KERN_INFO "kmalloced block at %p has been corrupted (underrun)!\n",v);

			printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,

			                c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );

		}

		c1 += 8;

	}

	c1 += size;

	for (i = 0; i < KMEM_SAFETYZONE; i++) {

		if (   c1[0] != 'M' || c1[1] != 'U' || c1[2] != 'N' || c1[3] != 'G'

		    || c1[4] != 'W' || c1[5] != 'A' || c1[6] != 'L' || c1[7] != 'L'

		   ) {

			printk(KERN_INFO "kmalloced block at %p has been corrupted (overrun):\n",v);

			printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,

			                c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );

		}

		c1 += 8;

	}

	printk(KERN_INFO "line %d  kfree(%p)\n",line,v);

	v = ((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8);

	kfree(v);

}



#define kmalloc(x,y) dbg_kmalloc(x,y,__LINE__)

#define kfree(x) dbg_kfree(x,__LINE__)

*****************************************************************************/



/*

 * 	Function Prototypes

 */