diff options
Diffstat (limited to 'arch/parisc')
-rw-r--r-- | arch/parisc/kernel/cache.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index f46a07a79218..e15f09eaed12 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c | |||
@@ -27,6 +27,7 @@ | |||
27 | #include <asm/page.h> | 27 | #include <asm/page.h> |
28 | #include <asm/pgalloc.h> | 28 | #include <asm/pgalloc.h> |
29 | #include <asm/processor.h> | 29 | #include <asm/processor.h> |
30 | #include <asm/sections.h> | ||
30 | 31 | ||
31 | int split_tlb; | 32 | int split_tlb; |
32 | int dcache_stride; | 33 | int dcache_stride; |
@@ -207,6 +208,9 @@ parisc_cache_init(void) | |||
207 | 208 | ||
208 | /* "New and Improved" version from Jim Hull | 209 | /* "New and Improved" version from Jim Hull |
209 | * (1 << (cc_block-1)) * (cc_line << (4 + cnf.cc_shift)) | 210 | * (1 << (cc_block-1)) * (cc_line << (4 + cnf.cc_shift)) |
211 | * The following CAFL_STRIDE is an optimized version, see | ||
212 | * http://lists.parisc-linux.org/pipermail/parisc-linux/2004-June/023625.html | ||
213 | * http://lists.parisc-linux.org/pipermail/parisc-linux/2004-June/023671.html | ||
210 | */ | 214 | */ |
211 | #define CAFL_STRIDE(cnf) (cnf.cc_line << (3 + cnf.cc_block + cnf.cc_shift)) | 215 | #define CAFL_STRIDE(cnf) (cnf.cc_line << (3 + cnf.cc_block + cnf.cc_shift)) |
212 | dcache_stride = CAFL_STRIDE(cache_info.dc_conf); | 216 | dcache_stride = CAFL_STRIDE(cache_info.dc_conf); |
@@ -339,17 +343,15 @@ int parisc_cache_flush_threshold = FLUSH_THRESHOLD; | |||
339 | void parisc_setup_cache_timing(void) | 343 | void parisc_setup_cache_timing(void) |
340 | { | 344 | { |
341 | unsigned long rangetime, alltime; | 345 | unsigned long rangetime, alltime; |
342 | extern char _text; /* start of kernel code, defined by linker */ | ||
343 | extern char _end; /* end of BSS, defined by linker */ | ||
344 | unsigned long size; | 346 | unsigned long size; |
345 | 347 | ||
346 | alltime = mfctl(16); | 348 | alltime = mfctl(16); |
347 | flush_data_cache(); | 349 | flush_data_cache(); |
348 | alltime = mfctl(16) - alltime; | 350 | alltime = mfctl(16) - alltime; |
349 | 351 | ||
350 | size = (unsigned long)(&_end - _text); | 352 | size = (unsigned long)(_end - _text); |
351 | rangetime = mfctl(16); | 353 | rangetime = mfctl(16); |
352 | flush_kernel_dcache_range((unsigned long)&_text, size); | 354 | flush_kernel_dcache_range((unsigned long)_text, size); |
353 | rangetime = mfctl(16) - rangetime; | 355 | rangetime = mfctl(16) - rangetime; |
354 | 356 | ||
355 | printk(KERN_DEBUG "Whole cache flush %lu cycles, flushing %lu bytes %lu cycles\n", | 357 | printk(KERN_DEBUG "Whole cache flush %lu cycles, flushing %lu bytes %lu cycles\n", |