It looks like ARM64 in Trusty does not have the Function Tracer support:
phlin@tangerine:~/ubuntu-trusty$ git grep "ifdef CONFIG_FUNCTION_TRACER"
Makefile:ifdef CONFIG_FUNCTION_TRACER
arch/arm/include/asm/ftrace.h:#ifdef CONFIG_FUNCTION_TRACER
arch/arm/kernel/Makefile:ifdef CONFIG_FUNCTION_TRACER
arch/arm/kernel/armksyms.c:#ifdef CONFIG_FUNCTION_TRACER
arch/arm/kernel/entry-common.S:#ifdef CONFIG_FUNCTION_TRACER
arch/blackfin/kernel/bfin_ksyms.c:#ifdef CONFIG_FUNCTION_TRACER
arch/ia64/include/asm/ftrace.h:#ifdef CONFIG_FUNCTION_TRACER
arch/ia64/kernel/entry.S:#ifdef CONFIG_FUNCTION_TRACER
arch/ia64/kernel/ia64_ksyms.c:#ifdef CONFIG_FUNCTION_TRACER
arch/metag/include/asm/ftrace.h:#ifdef CONFIG_FUNCTION_TRACER
...
phlin@tangerine:~/ubuntu-trusty/arch/arm64$ grep -r HAVE_FUNCTION_TRACER *
phlin@tangerine:~/ubuntu-trusty/arch/arm64$
I will just disable the test for Trusty ARM64.
** Summary changed:
- Please enable the config for ftrace on T-ARM64
+ Please enable the config for ftrace on T-ARM64 (ubuntu_ftrace_smoke_test
failed)
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
** Changed in: linux (Ubuntu Trusty)
Status: Confirmed => Won't Fix
** Changed in: ubuntu-kernel-tests
Status: New => In Progress
** Changed in: ubuntu-kernel-tests
Assignee: (unassigned) => Po-Hsu Lin (cypressyew)
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https://bugs.launchpad.net/bugs/1820988
Title:
Please enable the config for ftrace on T-ARM64
(ubuntu_ftrace_smoke_test failed)
Status in ubuntu-kernel-tests:
In Progress
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Trusty:
Won't Fix
Bug description:
The ubuntu_ftrace_smoke_test is failing on Trusty ARM64.
It looks like it will need the following configs for get it work:
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
CONFIG_STACK_TRACER=y
CONFIG_DYNAMIC_FTRACE=y
ftrace is useful for debugging. We should enable it.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-167-generic 3.13.0-167.217
ProcVersionSignature: User Name 3.13.0-167.217-generic 3.13.11-ckt39
Uname: Linux 3.13.0-167-generic aarch64
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code
2: ls: cannot access /dev/snd/: No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.29
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg:
Date: Wed Mar 20 10:14:53 2019
IwConfig:
lo no wireless extensions.
enp1s0 no wireless extensions.
enp1s0d1 no wireless extensions.
Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize
libusb: -99
PciMultimedia:
ProcFB:
ProcKernelCmdLine: console=ttyS0,9600n8r ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-167-generic N/A
linux-backports-modules-3.13.0-167-generic N/A
linux-firmware 1.127.24
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
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