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authorTakashi Iwai <tiwai@suse.de>2009-12-01 15:58:15 +0100
committerTakashi Iwai <tiwai@suse.de>2009-12-01 15:58:15 +0100
commitb00615d163cd24fa98d155acfc1f9d81d6fe1103 (patch)
treedde815788aaea3e336aaaf24763311ce63a22e1b /arch/x86/kernel/process_64.c
parent75639e7ee1401b3876c7a00ffe96ea8027668690 (diff)
parentd6797322231af98b9bb4afb175dd614cf511e5f7 (diff)
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Merge branch 'topic/pcm-dma-fix' into topic/core-change
Diffstat (limited to 'arch/x86/kernel/process_64.c')
-rw-r--r--arch/x86/kernel/process_64.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ad535b683170..eb62cbcaa490 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -664,3 +664,8 @@ long sys_arch_prctl(int code, unsigned long addr)
return do_arch_prctl(current, code, addr);
}
+unsigned long KSTK_ESP(struct task_struct *task)
+{
+ return (test_tsk_thread_flag(task, TIF_IA32)) ?
+ (task_pt_regs(task)->sp) : ((task)->thread.usersp);
+}