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authorAnton Blanchard <anton@samba.org>2016-09-30 13:39:51 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2016-10-04 08:10:54 +0300
commit32eab6c9e15ad9856b74f655062caf61e2ee3995 (patch)
tree2f6cd2f0bc5373501c88a70b013be6b14aeacd80 /arch/powerpc
parent43c2394fc15028c6d846633d21ebdd88a1692859 (diff)
downloadlinux-32eab6c9e15ad9856b74f655062caf61e2ee3995.tar.xz
powerpc/configs: Bump kernel ring buffer size on 64 bit configs
When we issue a system reset, every CPU in the box prints an Oops, including a backtrace. Each of these can be quite large (over 4kB) and we may end up wrapping the ring buffer and losing important information. Bump the base size from 128kB to 256kB and the per CPU size from 4kB to 8kB. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/configs/powernv_defconfig2
-rw-r--r--arch/powerpc/configs/ppc64_defconfig2
-rw-r--r--arch/powerpc/configs/pseries_defconfig2
3 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig
index 3f6226b9283d..95b52b41c196 100644
--- a/arch/powerpc/configs/powernv_defconfig
+++ b/arch/powerpc/configs/powernv_defconfig
@@ -15,6 +15,8 @@ CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_CGROUPS=y
CONFIG_MEMCG=y
diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig
index 861471db5bf0..886b237fc8d3 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
@@ -10,6 +10,8 @@ CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_CGROUPS=y
CONFIG_CPUSETS=y
CONFIG_BLK_DEV_INITRD=y
diff --git a/arch/powerpc/configs/pseries_defconfig b/arch/powerpc/configs/pseries_defconfig
index 670b8d55e687..2a5dac753b56 100644
--- a/arch/powerpc/configs/pseries_defconfig
+++ b/arch/powerpc/configs/pseries_defconfig
@@ -15,6 +15,8 @@ CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_LOG_CPU_MAX_BUF_SHIFT=13
CONFIG_NUMA_BALANCING=y
CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
CONFIG_CGROUPS=y