x86: Eliminate redundant/contradicting cache line size config options

Rather than having X86_L1_CACHE_BYTES and X86_L1_CACHE_SHIFT
(with inconsistent defaults), just having the latter suffices as
the former can be easily calculated from it.

To be consistent, also change X86_INTERNODE_CACHE_BYTES to
X86_INTERNODE_CACHE_SHIFT, and set it to 7 (128 bytes) for NUMA
to account for last level cache line size (which here matters
more than L1 cache line size).

Finally, make sure the default value for X86_L1_CACHE_SHIFT,
when X86_GENERIC is selected, is being seen before that for the
individual CPU model options (other than on x86-64, where
GENERIC_CPU is part of the choice construct, X86_GENERIC is a
separate option on ix86).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Ravikiran Thirumalai <kiran@scalex86.org>
Acked-by: Nick Piggin <npiggin@suse.de>
LKML-Reference: <4AFD5710020000780001F8F0@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 36fe08eeb5c3..65b58e4b0b8b 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -8,6 +8,7 @@
 
 #include <asm/tlbflush.h>
 #include <asm/mmu_context.h>
+#include <asm/cache.h>
 #include <asm/apic.h>
 #include <asm/uv/uv.h>
 
@@ -43,7 +44,7 @@ union smp_flush_state {
                 spinlock_t tlbstate_lock;
                 DECLARE_BITMAP(flush_cpumask, NR_CPUS);
         };
-        char pad[CONFIG_X86_INTERNODE_CACHE_BYTES];
+        char pad[INTERNODE_CACHE_BYTES];
 } ____cacheline_internodealigned_in_smp;
 
 /* State is put into the per CPU data section, but padded