linux-kernel - [PATCH 043/115] gpu: ion: Clear GFP_WAIT flag on high order allocations

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Message-Id: <1386973529-4884-44-git-send-email-john.stultz@linaro.org>
Date:	Fri, 13 Dec 2013 14:24:17 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Jesse Barker <jesse.barker@....com>,
	Colin Cross <ccross@...roid.com>,
	Rebecca Schultz Zavin <rebecca@...roid.com>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 043/115] gpu: ion: Clear GFP_WAIT flag on high order allocations

From: Rebecca Schultz Zavin <rebecca@...roid.com>

This will prevent the kernel from kicking off compaction
when higher order allocations are made.  Instead we will
get these high order allocations only if they are readily
available.

Signed-off-by: Rebecca Schultz Zavin <rebecca@...roid.com>
[jstultz: modified patch to apply to staging directory]
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/staging/android/ion/ion_system_heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c
index 2204206..ad4933e 100644
--- a/drivers/staging/android/ion/ion_system_heap.c
+++ b/drivers/staging/android/ion/ion_system_heap.c
@@ -28,7 +28,7 @@
 
 static unsigned int high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO |
 					    __GFP_NOWARN | __GFP_NORETRY |
-					    __GFP_NO_KSWAPD);
+					    __GFP_NO_KSWAPD) & ~__GFP_WAIT;
 static unsigned int low_order_gfp_flags  = (GFP_HIGHUSER | __GFP_ZERO |
 					 __GFP_NOWARN);
 static const unsigned int orders[] = {8, 4, 0};
-- 
1.8.3.2

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