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sh: Add support for 4K stacks.

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This enables support for 4K stacks on SH.

Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2006-09-27 18:22:14 +09:00
parent 2cb7ce3bb3
commit a6a3113989
9 changed files with 190 additions and 24 deletions
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9
include/asm-sh/irq.h
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@ -719,6 +719,15 @@ static inline int generic_irq_demux(int irq)
#define irq_canonicalize(irq) (irq)
#define irq_demux(irq) __irq_demux(sh_mv.mv_irq_demux(irq))
#ifdef CONFIG_4KSTACKS
extern void irq_ctx_init(int cpu);
extern void irq_ctx_exit(int cpu);
# define __ARCH_HAS_DO_SOFTIRQ
#else
# define irq_ctx_init(cpu) do { } while (0)
# define irq_ctx_exit(cpu) do { } while (0)
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH73180)
#include <asm/irq-sh73180.h>
#endif