[C][SRU][PATCH] CONFIG_LOG_BUF_SHIFT set to 14 is too low on arm64

[Dan Streetman]

From: Dan Streetman <ddstreet at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1824864

All other archs have this value set higher, and the low value of 14
results in a log buffer so small it fills up before systemd-journald
can start and read all the boot time kernel log messages.

Increasing this will result in more memory reserved for the log buffer,
but will avoid missed kernel log messages.

This changes all 64 bit archs to use a shift of 18, which is what
amd64 has been using.

Signed-off-by: Dan Streetman <ddstreet at canonical.com>
Cc: Dimitri John Ledkov <xnox at ubuntu.com>
---

@xnox opened this bug and submitted a patch for disco, but not earlier kernels.

 debian.master/config/annotations                   | 2 +-
 debian.master/config/arm64/config.common.arm64     | 2 +-
 debian.master/config/ppc64el/config.common.ppc64el | 2 +-
 debian.master/config/s390x/config.common.s390x     | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/debian.master/config/annotations b/debian.master/config/annotations
index 7e6b35a739b81..f4f8d60cde91a 100644
--- a/debian.master/config/annotations
+++ b/debian.master/config/annotations
@@ -9463,7 +9463,7 @@ CONFIG_USELIB                                   policy<{'amd64': 'y', 'arm64': '
 CONFIG_AUDIT                                    policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'i386': 'y', 'ppc64el': 'y', 's390x': 'y'}>
 CONFIG_CPU_ISOLATION                            policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'i386': 'y', 'ppc64el': 'y', 's390x': 'y'}>
 CONFIG_IKCONFIG                                 policy<{'amd64': 'n', 'arm64': 'n', 'armhf': 'n', 'i386': 'n', 'ppc64el': 'n', 's390x': 'n'}>
-CONFIG_LOG_BUF_SHIFT                            policy<{'amd64': '18', 'arm64': '14', 'armhf': '17', 'i386': '17', 'ppc64el': '17', 's390x': '17'}>
+CONFIG_LOG_BUF_SHIFT                            policy<{'amd64': '18', 'arm64': '18', 'armhf': '17', 'i386': '17', 'ppc64el': '18', 's390x': '18'}>
 CONFIG_LOG_CPU_MAX_BUF_SHIFT                    policy<{'amd64': '12', 'arm64': '12', 'armhf': '12', 'i386': '12', 'ppc64el': '12', 's390x': '12'}>
 CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT                policy<{'amd64': '13', 'arm64': '13', 'armhf': '13', 'i386': '13', 'ppc64el': '13', 's390x': '13'}>
 CONFIG_NUMA_BALANCING                           policy<{'amd64': 'y', 'arm64': 'y', 'ppc64el': 'y', 's390x': 'y'}>
diff --git a/debian.master/config/arm64/config.common.arm64 b/debian.master/config/arm64/config.common.arm64
index 9e45389b8a81e..0a861940aebca 100644
--- a/debian.master/config/arm64/config.common.arm64
+++ b/debian.master/config/arm64/config.common.arm64
@@ -169,7 +169,7 @@ CONFIG_LDM_PARTITION=y
 CONFIG_LIBNVDIMM=y
 CONFIG_LLC2=m
 CONFIG_LOCK_DOWN_KERNEL=y
-CONFIG_LOG_BUF_SHIFT=14
+CONFIG_LOG_BUF_SHIFT=18
 CONFIG_LPC_ICH=m
 CONFIG_LPC_SCH=m
 CONFIG_MAC_PARTITION=y
diff --git a/debian.master/config/ppc64el/config.common.ppc64el b/debian.master/config/ppc64el/config.common.ppc64el
index d117341f298ec..a74f28921a903 100644
--- a/debian.master/config/ppc64el/config.common.ppc64el
+++ b/debian.master/config/ppc64el/config.common.ppc64el
@@ -165,7 +165,7 @@ CONFIG_LDM_PARTITION=y
 CONFIG_LIBNVDIMM=y
 CONFIG_LLC2=m
 # CONFIG_LOCK_DOWN_KERNEL is not set
-CONFIG_LOG_BUF_SHIFT=17
+CONFIG_LOG_BUF_SHIFT=18
 CONFIG_LPC_ICH=m
 CONFIG_LPC_SCH=m
 CONFIG_MAC_PARTITION=y
diff --git a/debian.master/config/s390x/config.common.s390x b/debian.master/config/s390x/config.common.s390x
index 443da66f8f646..a97f9f26b3ea7 100644
--- a/debian.master/config/s390x/config.common.s390x
+++ b/debian.master/config/s390x/config.common.s390x
@@ -136,7 +136,7 @@ CONFIG_KVM=y
 # CONFIG_LIBNVDIMM is not set
 # CONFIG_LLC2 is not set
 # CONFIG_LOCK_DOWN_KERNEL is not set
-CONFIG_LOG_BUF_SHIFT=17
+CONFIG_LOG_BUF_SHIFT=18
 # CONFIG_LPC_ICH is not set
 # CONFIG_LPC_SCH is not set
 # CONFIG_MAC_PARTITION is not set
-- 
2.20.1