linux-kernel - [PATCH] arm: exynos increase CONFIG_CMA_SIZE

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Date:   Mon, 27 Feb 2017 17:23:52 -0700
From:   Shuah Khan <shuahkh@....samsung.com>
To:     linux@...linux.org.uk, kgene@...nel.org, krzk@...nel.org,
        javier@....samsung.com, arnd@...db.de, cw00.choi@...sung.com,
        rafael.j.wysocki@...el.com, robie@...tgohome.co.uk,
        b.zolnierkie@...sung.com, viresh.kumar@...aro.org,
        m.szyprowski@...sung.com, s.nawrocki@...sung.com,
        a.hajda@...sung.com, inki.dae@...sung.com, sw0312.kim@...sung.com
Cc:     Shuah Khan <shuahkh@....samsung.com>, shuah@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm: exynos increase CONFIG_CMA_SIZE_MBYTES to 96

Current CMA size of 64 Mbytes is right on the edge of being too small
for some display managers.  With the proposed s5p_mfc patch series that
pre-allocate buffers, when display manager starts, it fails to get GEM
buffers.  Increasing the CMA size to 96 solves the problem.

Change CONFIG_CMA_SIZE_MBYTES to 96 in exynos_defconfig to address the
problem.

Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
Suggested-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
 arch/arm/configs/exynos_defconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
index 742baf0..2541414 100644
--- a/arch/arm/configs/exynos_defconfig
+++ b/arch/arm/configs/exynos_defconfig
@@ -53,7 +53,7 @@ CONFIG_RFKILL_REGULATOR=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 CONFIG_DMA_CMA=y
-CONFIG_CMA_SIZE_MBYTES=64
+CONFIG_CMA_SIZE_MBYTES=96
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_CRYPTOLOOP=y
 CONFIG_BLK_DEV_RAM=y
-- 
2.7.4