x86, 32-bit: ifdef out struct thread_struct::fs

After commit 464d1a78fbf8cf6c7fd970e7b3e2db50a320ce28 aka
"[PATCH] i386: Convert i386 PDA code to use %fs"
%fs saved during context switch moved from thread_struct to pt_regs
and value on thread_struct became unused.

[ Impact: reduce thread_struct size on 32-bit ]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: containers@lists.linux-foundation.org
LKML-Reference: <20090503232952.GI16631@x200.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index c2cceae709c8..a6732ff7b016 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -428,7 +428,9 @@ struct thread_struct {
         unsigned short          gsindex;
 #endif
         unsigned long           ip;
+#ifdef CONFIG_X86_64
         unsigned long           fs;
+#endif
         unsigned long           gs;
         /* Hardware debugging registers: */
         unsigned long           debugreg0;
@@ -874,7 +876,6 @@ static inline void spin_lock_prefetch(const void *x)
         .vm86_info              = NULL,                                   \
         .sysenter_cs            = __KERNEL_CS,                            \
         .io_bitmap_ptr          = NULL,                                   \
-        .fs                     = __KERNEL_PERCPU,                        \
 }
 
 /*