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| author | Kyle McMartin <kyle@parisc-linux.org> | 2006-08-13 22:15:47 -0400 |
|---|---|---|
| committer | Matthew Wilcox <willy@parisc-linux.org> | 2006-10-04 06:44:47 -0600 |
| commit | 4068d93cd17561bcbfc821c831cb048385320bd6 (patch) | |
| tree | db2e8f3ad3c8ab729cff1304cba984a4bc0a3735 /include/asm-parisc/processor.h | |
| parent | 78b656b8bf933101b42409b4492734b23427bfc3 (diff) | |
| download | lwn-4068d93cd17561bcbfc821c831cb048385320bd6.tar.gz lwn-4068d93cd17561bcbfc821c831cb048385320bd6.zip | |
[PARISC] Untangle <asm/processor.h> header include mess
asm/processor.h on parisc wants spinlocks for cpuinfo, but
linux/spinlock_types.h needs lockdep, and lockdep wants prefetch.
This leads to a horrible circular dependancy, because <asm/processor.h>
is including something which depends on things which are not defined
until the end of the file.
Kludge around this by moving prefetch related code into <asm/prefetch.h>
and including it before <linux/spinlock_types.h>, however this is just
a temporary solution until this mess can be cleaned up.
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/asm-parisc/processor.h')
| -rw-r--r-- | include/asm-parisc/processor.h | 28 |
1 files changed, 2 insertions, 26 deletions
diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h index b73626f040da..c72b8fa49686 100644 --- a/include/asm-parisc/processor.h +++ b/include/asm-parisc/processor.h @@ -9,6 +9,8 @@ #define __ASM_PARISC_PROCESSOR_H #ifndef __ASSEMBLY__ +#include <asm/prefetch.h> /* lockdep.h needs <linux/prefetch.h> */ + #include <linux/threads.h> #include <linux/spinlock_types.h> @@ -328,32 +330,6 @@ extern unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) ((tsk)->thread.regs.iaoq[0]) #define KSTK_ESP(tsk) ((tsk)->thread.regs.gr[30]) - -/* - * PA 2.0 defines data prefetch instructions on page 6-11 of the Kane book. - * In addition, many implementations do hardware prefetching of both - * instructions and data. - * - * PA7300LC (page 14-4 of the ERS) also implements prefetching by a load - * to gr0 but not in a way that Linux can use. If the load would cause an - * interruption (eg due to prefetching 0), it is suppressed on PA2.0 - * processors, but not on 7300LC. - */ -#ifdef CONFIG_PREFETCH -#define ARCH_HAS_PREFETCH -#define ARCH_HAS_PREFETCHW - -extern inline void prefetch(const void *addr) -{ - __asm__("ldw 0(%0), %%r0" : : "r" (addr)); -} - -extern inline void prefetchw(const void *addr) -{ - __asm__("ldd 0(%0), %%r0" : : "r" (addr)); -} -#endif - #define cpu_relax() barrier() #endif /* __ASSEMBLY__ */ |