[tip:x86/debug] x86/kernel: Use kstack_end() in dumpstack_64.c

[tip-bot for Adrien Schildknecht]

Commit-ID:  04769ae3ac72f86324a189b69f53bf3bfb61acfd
Gitweb:     http://git.kernel.org/tip/04769ae3ac72f86324a189b69f53bf3bfb61acfd
Author:     Adrien Schildknecht <adrien+dev@xxxxxxxxxxx>
AuthorDate: Sun, 22 Feb 2015 16:23:58 +0100
Committer:  Borislav Petkov <bp@xxxxxxx>
CommitDate: Mon, 23 Feb 2015 18:37:13 +0100

x86/kernel: Use kstack_end() in dumpstack_64.c

i386 is already using kstack_end() in dumpstack_32.c. We should also
use it to make the code clearer and unify the stack printing logic some
more.

Suggested-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Adrien Schildknecht <adrien+dev@xxxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: c: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1424618638-6375-1-git-send-email-adrien+dev@xxxxxxxxxxx
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
 arch/x86/kernel/dumpstack_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 553573b..5f1c626 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -280,7 +280,7 @@ show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
 				pr_cont(" <EOI> ");
 			}
 		} else {
-		if (((long) stack & (THREAD_SIZE-1)) == 0)
+		if (kstack_end(stack))
 			break;
 		}
 		if ((i % STACKSLOTS_PER_LINE) == 0) {
--
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