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authorRalf Baechle <ralf@linux-mips.org>2005-07-15 19:23:23 +0400
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 22:31:54 +0400
commit1d40cfcd3442a53e98468cdb3e6d4d9a568d76cf (patch)
tree76d3ba7ac251389194b74c4343d7c46231442044
parentbdf21b18b4abf983db38f04ef7fec88f47389867 (diff)
downloadlinux-1d40cfcd3442a53e98468cdb3e6d4d9a568d76cf.tar.xz
Avoid SMP cacheflushes. This is a minor optimization of startup but
will also avoid smp_call_function from doing stupid things when called from a CPU that is not yet marked online. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/kernel/traps.c2
-rw-r--r--arch/mips/mm/c-r4k.c5
-rw-r--r--arch/mips/mm/c-tx39.c1
-rw-r--r--arch/mips/mm/pg-r4k.c6
-rw-r--r--arch/mips/mm/tlbex.c30
5 files changed, 15 insertions, 29 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 0a3969aa8dc6..519b8f18eedf 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1150,6 +1150,7 @@ static inline void signal32_init(void)
extern void cpu_cache_init(void);
extern void tlb_init(void);
+extern void flush_tlb_handlers(void);
void __init per_cpu_trap_init(void)
{
@@ -1348,4 +1349,5 @@ void __init trap_init(void)
#endif
flush_icache_range(ebase, ebase + 0x400);
+ flush_tlb_handlers();
}
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 6a1267ad071f..637052b23042 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1270,9 +1270,8 @@ void __init ld_mmu_r4xx0(void)
_dma_cache_inv = r4k_dma_cache_inv;
#endif
- __flush_cache_all();
- coherency_setup();
-
build_clear_page();
build_copy_page();
+ local_r4k___flush_cache_all(NULL);
+ coherency_setup();
}
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index 5054a0ed2b6d..56c3fcdd2822 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -492,4 +492,5 @@ void __init ld_mmu_tx39(void)
build_clear_page();
build_copy_page();
+ tx39h_flush_icache_all();
}
diff --git a/arch/mips/mm/pg-r4k.c b/arch/mips/mm/pg-r4k.c
index 9f8b16541577..75d9ebfc5431 100644
--- a/arch/mips/mm/pg-r4k.c
+++ b/arch/mips/mm/pg-r4k.c
@@ -404,9 +404,6 @@ dest = label();
build_jr_ra();
- flush_icache_range((unsigned long)&clear_page_array,
- (unsigned long) epc);
-
BUG_ON(epc > clear_page_array + ARRAY_SIZE(clear_page_array));
}
@@ -482,8 +479,5 @@ dest = label();
build_jr_ra();
- flush_icache_range((unsigned long)&copy_page_array,
- (unsigned long) epc);
-
BUG_ON(epc > copy_page_array + ARRAY_SIZE(copy_page_array));
}
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index a876ed6cde24..c3c75a234f50 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -743,7 +743,6 @@ static void __init build_r3000_tlb_refill_handler(void)
#endif
memcpy((void *)CAC_BASE, tlb_handler, 0x80);
- flush_icache_range(CAC_BASE, CAC_BASE + 0x80);
}
/*
@@ -1258,7 +1257,6 @@ static void __init build_r4000_tlb_refill_handler(void)
#endif
memcpy((void *)CAC_BASE, final_handler, 0x100);
- flush_icache_range(CAC_BASE, CAC_BASE + 0x100);
}
/*
@@ -1519,9 +1517,6 @@ static void __init build_r3000_tlb_load_handler(void)
printk("%08x\n", handle_tlbl[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbl,
- (unsigned long)handle_tlbl + FASTPATH_SIZE * sizeof(u32));
}
static void __init build_r3000_tlb_store_handler(void)
@@ -1559,9 +1554,6 @@ static void __init build_r3000_tlb_store_handler(void)
printk("%08x\n", handle_tlbs[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbs,
- (unsigned long)handle_tlbs + FASTPATH_SIZE * sizeof(u32));
}
static void __init build_r3000_tlb_modify_handler(void)
@@ -1599,9 +1591,6 @@ static void __init build_r3000_tlb_modify_handler(void)
printk("%08x\n", handle_tlbm[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbm,
- (unsigned long)handle_tlbm + FASTPATH_SIZE * sizeof(u32));
}
/*
@@ -1691,9 +1680,6 @@ static void __init build_r4000_tlb_load_handler(void)
printk("%08x\n", handle_tlbl[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbl,
- (unsigned long)handle_tlbl + FASTPATH_SIZE * sizeof(u32));
}
static void __init build_r4000_tlb_store_handler(void)
@@ -1730,9 +1716,6 @@ static void __init build_r4000_tlb_store_handler(void)
printk("%08x\n", handle_tlbs[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbs,
- (unsigned long)handle_tlbs + FASTPATH_SIZE * sizeof(u32));
}
static void __init build_r4000_tlb_modify_handler(void)
@@ -1770,9 +1753,6 @@ static void __init build_r4000_tlb_modify_handler(void)
printk("%08x\n", handle_tlbm[i]);
}
#endif
-
- flush_icache_range((unsigned long)handle_tlbm,
- (unsigned long)handle_tlbm + FASTPATH_SIZE * sizeof(u32));
}
void __init build_tlb_refill_handler(void)
@@ -1820,3 +1800,13 @@ void __init build_tlb_refill_handler(void)
}
}
}
+
+void __init flush_tlb_handlers(void)
+{
+ flush_icache_range((unsigned long)handle_tlbl,
+ (unsigned long)handle_tlbl + sizeof(handle_tlbl));
+ flush_icache_range((unsigned long)handle_tlbs,
+ (unsigned long)handle_tlbs + sizeof(handle_tlbs));
+ flush_icache_range((unsigned long)handle_tlbm,
+ (unsigned long)handle_tlbm + sizeof(handle_tlbm));
+}