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

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After commit 464d1a78fb 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>
This commit is contained in:
Alexey Dobriyan 2009-05-04 03:29:52 +04:00 committed by Ingo Molnar
parent edc953fa4e
commit d756f4adb9
1 changed files with 2 additions and 1 deletions
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3
arch/x86/include/asm/processor.h
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@ -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, \
}
/*