linux/arch/blackfin/include/asm/l1layout.h
Sonic Zhang cc92b870a7 Blackfin arch: disable pthread stack check for SMP at runtime
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2009-01-07 23:14:38 +08:00

34 lines
806 B
C

/*
* l1layout.h
* Defines a layout of L1 scratchpad memory that userspace can rely on.
*/
#ifndef _L1LAYOUT_H_
#define _L1LAYOUT_H_
#include <asm/blackfin.h>
#ifndef CONFIG_SMP
#ifndef __ASSEMBLY__
/* Data that is "mapped" into the process VM at the start of the L1 scratch
memory, so that each process can access it at a fixed address. Used for
stack checking. */
struct l1_scratch_task_info
{
/* Points to the start of the stack. */
void *stack_start;
/* Not updated by the kernel; a user process can modify this to
keep track of the lowest address of the stack pointer during its
runtime. */
void *lowest_sp;
};
/* A pointer to the structure in memory. */
#define L1_SCRATCH_TASK_INFO ((struct l1_scratch_task_info *)\
get_l1_scratch_start())
#endif
#endif
#endif