Merge branch 'linus' into core/rcu

Conflicts:

	include/linux/rculist.h
	kernel/rcupreempt.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

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);
+                }
         }
 }