gfrg200_defconfig: enable preemptible kernel.
This is suspiciously not needed on our bcm-based devices, but without this
setting, reading from NOR or NAND flash causes very extreme UDP receive
packet loss on this platform. I haven't investigated exactly why,
though it's fairly safe to assume some code is spinning for too long with
interrupts disabled.
Even with preemptible kernel, we still see packet loss during heavy disk
I/O, which shouldn't be happening either. But this is an improvement.
Change-Id: I6bbf47672b6409e82336be05c638f94492600160
diff --git a/arch/arm/configs/gfrg200_defconfig b/arch/arm/configs/gfrg200_defconfig
index fbcd630..68e4d09 100644
--- a/arch/arm/configs/gfrg200_defconfig
+++ b/arch/arm/configs/gfrg200_defconfig
@@ -4,6 +4,8 @@
CONFIG_SYSVIPC=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_RCU_BOOST=y
+CONFIG_RCU_BOOST_DELAY=50
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CGROUPS=y
CONFIG_CGROUP_DEVICE=y
@@ -41,6 +43,7 @@
# CONFIG_SMP_ON_UP is not set
CONFIG_VMSPLIT_2G=y
CONFIG_NR_CPUS=2
+CONFIG_PREEMPT=y
CONFIG_AEABI=y
# CONFIG_OABI_COMPAT is not set
CONFIG_ZBOOT_ROM_TEXT=0x3008000
@@ -287,6 +290,8 @@
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
CONFIG_BOOTPARAM_HUNG_TASK_PANIC=y
# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_RCU_CPU_STALL_VERBOSE is not set
CONFIG_SYSCTL_SYSCALL_CHECK=y
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_ARM_UNWIND is not set
