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[S390] introduce vdso on s390

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Add a vdso to speed up gettimeofday and clock_getres/clock_gettime for
CLOCK_REALTIME/CLOCK_MONOTONIC.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2008-12-25 13:38:36 +01:00
parent fc5243d98a
commit b020632e40
24 changed files with 1218 additions and 1 deletions
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13
arch/s390/kernel/vdso32/vdso32_wrapper.S Normal file
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@@ -0,0 +1,13 @@
#include <linux/init.h>
#include <asm/page.h>
.section ".data.page_aligned"
.globl vdso32_start, vdso32_end
.balign PAGE_SIZE
vdso32_start:
.incbin "arch/s390/kernel/vdso32/vdso32.so"
.balign PAGE_SIZE
vdso32_end:
.previous