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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-16 02:29:07 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-16 02:29:07 +0400 |
| commit | 82638844d9a8581bbf33201cc209a14876eca167 (patch) | |
| tree | 961d7f9360194421a71aa644a9d0c176a960ce49 /arch/mips/mm/page.c | |
| parent | 9982fbface82893e77d211fbabfbd229da6bdde6 (diff) | |
| parent | 63cf13b77ab785e87c867defa8545e6d4a989774 (diff) | |
| download | linux-82638844d9a8581bbf33201cc209a14876eca167.tar.xz | |
Merge branch 'linus' into cpus4096
Conflicts:
arch/x86/xen/smp.c
kernel/sched_rt.c
net/iucv/iucv.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/mips/mm/page.c')
| -rw-r--r-- | arch/mips/mm/page.c | 61 |
1 files changed, 32 insertions, 29 deletions
diff --git a/arch/mips/mm/page.c b/arch/mips/mm/page.c index 1edf0cbbeede..1417c6494858 100644 --- a/arch/mips/mm/page.c +++ b/arch/mips/mm/page.c @@ -235,13 +235,12 @@ static void __cpuinit set_prefetch_parameters(void) } /* * Too much unrolling will overflow the available space in - * clear_space_array / copy_page_array. 8 words sounds generous, - * but a R4000 with 128 byte L2 line length can exceed even that. + * clear_space_array / copy_page_array. */ - half_clear_loop_size = min(8 * clear_word_size, + half_clear_loop_size = min(16 * clear_word_size, max(cache_line_size >> 1, 4 * clear_word_size)); - half_copy_loop_size = min(8 * copy_word_size, + half_copy_loop_size = min(16 * copy_word_size, max(cache_line_size >> 1, 4 * copy_word_size)); } @@ -263,21 +262,23 @@ static inline void __cpuinit build_clear_pref(u32 **buf, int off) if (pref_bias_clear_store) { uasm_i_pref(buf, pref_dst_mode, pref_bias_clear_store + off, A0); - } else if (cpu_has_cache_cdex_s) { - uasm_i_cache(buf, Create_Dirty_Excl_SD, off, A0); - } else if (cpu_has_cache_cdex_p) { - if (R4600_V1_HIT_CACHEOP_WAR && cpu_is_r4600_v1_x()) { - uasm_i_nop(buf); - uasm_i_nop(buf); - uasm_i_nop(buf); - uasm_i_nop(buf); - } + } else if (cache_line_size == (half_clear_loop_size << 1)) { + if (cpu_has_cache_cdex_s) { + uasm_i_cache(buf, Create_Dirty_Excl_SD, off, A0); + } else if (cpu_has_cache_cdex_p) { + if (R4600_V1_HIT_CACHEOP_WAR && cpu_is_r4600_v1_x()) { + uasm_i_nop(buf); + uasm_i_nop(buf); + uasm_i_nop(buf); + uasm_i_nop(buf); + } - if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x()) - uasm_i_lw(buf, ZERO, ZERO, AT); + if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x()) + uasm_i_lw(buf, ZERO, ZERO, AT); - uasm_i_cache(buf, Create_Dirty_Excl_D, off, A0); - } + uasm_i_cache(buf, Create_Dirty_Excl_D, off, A0); + } + } } void __cpuinit build_clear_page(void) @@ -403,20 +404,22 @@ static inline void build_copy_store_pref(u32 **buf, int off) if (pref_bias_copy_store) { uasm_i_pref(buf, pref_dst_mode, pref_bias_copy_store + off, A0); - } else if (cpu_has_cache_cdex_s) { - uasm_i_cache(buf, Create_Dirty_Excl_SD, off, A0); - } else if (cpu_has_cache_cdex_p) { - if (R4600_V1_HIT_CACHEOP_WAR && cpu_is_r4600_v1_x()) { - uasm_i_nop(buf); - uasm_i_nop(buf); - uasm_i_nop(buf); - uasm_i_nop(buf); - } + } else if (cache_line_size == (half_copy_loop_size << 1)) { + if (cpu_has_cache_cdex_s) { + uasm_i_cache(buf, Create_Dirty_Excl_SD, off, A0); + } else if (cpu_has_cache_cdex_p) { + if (R4600_V1_HIT_CACHEOP_WAR && cpu_is_r4600_v1_x()) { + uasm_i_nop(buf); + uasm_i_nop(buf); + uasm_i_nop(buf); + uasm_i_nop(buf); + } - if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x()) - uasm_i_lw(buf, ZERO, ZERO, AT); + if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x()) + uasm_i_lw(buf, ZERO, ZERO, AT); - uasm_i_cache(buf, Create_Dirty_Excl_D, off, A0); + uasm_i_cache(buf, Create_Dirty_Excl_D, off, A0); + } } } |