From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 25 Sep 2010 20:07:51 +0000 (+0100)
Subject: alpha: fix usp value in multithreaded coredumps
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=32163f4b2cef28a5aab8b226ffecfc6379a53786;p=openwrt%2Fstaging%2Fblogic.git

alpha: fix usp value in multithreaded coredumps

rdusp() gives us the right value only for the current thread...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 842dba308eab..3ec35066f1dc 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -356,7 +356,7 @@ dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, struct thread_info *ti)
 	dest[27] = pt->r27;
 	dest[28] = pt->r28;
 	dest[29] = pt->gp;
-	dest[30] = rdusp();
+	dest[30] = ti == current_thread_info() ? rdusp() : ti->pcb.usp;
 	dest[31] = pt->pc;
 
 	/* Once upon a time this was the PS value.  Which is stupid