From: David S. Miller <davem@davemloft.net>
Date: Thu, 27 Mar 2008 00:32:33 +0000 (-0700)
Subject: [SPARC64]: Define TASK_SIZE_OF()
X-Git-Tag: upstream/snapshot3+hdmi~26544^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c101b088ba0ed16d7109b2f3c2d16798d162a535;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[SPARC64]: Define TASK_SIZE_OF()

This make "cat /proc/${PID}/pagemap" more efficient for
32-bit tasks.

Based upon a report by Mariusz Kozlowski.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h
index 8da484c..885b6a1 100644
--- a/include/asm-sparc64/processor.h
+++ b/include/asm-sparc64/processor.h
@@ -37,6 +37,9 @@
 #endif
 
 #define TASK_SIZE	((unsigned long)-VPTE_SIZE)
+#define TASK_SIZE_OF(tsk) \
+	(test_tsk_thread_flag(tsk,TIF_32BIT) ? \
+	 (1UL << 32UL) : TASK_SIZE)
 #ifdef __KERNEL__
 
 #define STACK_TOP32	((1UL << 32UL) - PAGE_SIZE)