From 3418ced0f326c502b3e5925dce4f581e79317033 Mon Sep 17 00:00:00 2001
From: Tao Huang <huangtao@rock-chips.com>
Date: Wed, 20 Jun 2018 18:33:39 +0800
Subject: [PATCH] arm64: rockchip_defconfig: disable SWAP/MEMCG/ZRAM

To avoid
[   53.262940] WARNING: at mm/page_counter.c:26
[   53.262946] Modules linked in:
[   53.262947]
[   53.262956] CPU: 0 PID: 1407 Comm: queued-work-loo Not tainted 4.4.132-rt141 #123
[   53.262958] Hardware name: Rockchip RK3399 Evaluation Board v3 (RT) (DT)
[   53.262963] task: ffffffc091b02c40 task.stack: ffffffc0917f0000
[   53.262979] PC is at page_counter_cancel+0x28/0x38
[   53.262983] LR is at page_counter_uncharge+0x24/0x34
[   53.264529] [<ffffff80081b6e88>] page_counter_cancel+0x28/0x38
[   53.264536] [<ffffff80081baa40>] uncharge_batch.constprop.24+0x54/0x2a0
[   53.264540] [<ffffff80081bacd8>] uncharge_list+0x4c/0xa4
[   53.264545] [<ffffff80081bd590>] mem_cgroup_uncharge_list+0x14/0x30
[   53.264552] [<ffffff800817ef3c>] release_pages+0x80/0x250
[   53.264558] [<ffffff80081aae94>] free_pages_and_swap_cache+0x38/0x84
[   53.264564] [<ffffff80081987b0>] tlb_flush_mmu_free+0x44/0x50
[   53.264568] [<ffffff800819961c>] tlb_flush_mmu+0x1c/0x28
[   53.264572] [<ffffff800819963c>] tlb_finish_mmu+0x14/0x40
[   53.264578] [<ffffff80081a0458>] exit_mmap+0xcc/0x11c
[   53.264585] [<ffffff800809a314>] mmput+0x4c/0xe8
[   53.264592] [<ffffff80080a087c>] do_exit+0x35c/0x880
[   53.264597] [<ffffff80080a0e68>] SyS_exit_group+0x0/0x10
[   53.264605] [<ffffff80080acd5c>] get_signal+0x3fc/0x4c0
[   53.264612] [<ffffff80080887d8>] do_signal+0x98/0xcec
[   53.264617] [<ffffff80080897d0>] do_notify_resume+0x18/0x54
[   53.264622] [<ffffff80080831a4>] work_pending+0x14/0x18

And I don't think we need these configs on RT system.

Change-Id: I462efd005cc246644cba40aa7c8938f82587376e
Signed-off-by: Tao Huang <huangtao@rock-chips.com>
---
 arch/arm64/configs/rockchip_defconfig | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/arm64/configs/rockchip_defconfig b/arch/arm64/configs/rockchip_defconfig
index 22cd69a6f1d1..f3feefc6faa8 100644
--- a/arch/arm64/configs/rockchip_defconfig
+++ b/arch/arm64/configs/rockchip_defconfig
@@ -1,4 +1,5 @@
 # CONFIG_LOCALVERSION_AUTO is not set
+# CONFIG_SWAP is not set
 # CONFIG_USELIB is not set
 CONFIG_AUDIT=y
 CONFIG_NO_HZ=y
@@ -14,8 +15,6 @@ CONFIG_CGROUPS=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
-CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
 CONFIG_CGROUP_SCHED=y
 CONFIG_NAMESPACES=y
 # CONFIG_UTS_NS is not set
@@ -229,8 +228,6 @@ CONFIG_RFKILL=y
 CONFIG_DEVTMPFS=y
 CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
 CONFIG_DMA_CMA=y
-CONFIG_ZRAM=y
-CONFIG_ZRAM_LZ4_COMPRESS=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_RAM=y
 CONFIG_BLK_DEV_RAM_SIZE=8192