Not to be fixed
Created: Dec 2, 2013
Updated: Apr 19, 2018
Resolved Date: Apr 17, 2018
Found In Version: 6.0
Severity: Severe
Applicable for: Wind River Linux 6
Component/s: Kernel
The perf is NOT enabled in preempt-rt kernel, and there is no template under wr-kernel/templates/feature/ for customer to enable perf feature when configure project.
In standard kernel, the feature perf is enabled by default
1. configure and build project with preempt-rt kernel
--enable-kernel=preempt-rt
2. boot the target and check the kernel option
root@localhost:~#
root@localhost:~# zcat /proc/config.gz | grep PERF
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
# CONFIG_PERF_EVENTS is not set
# CONFIG_CLS_U32_PERF is not set
root@localhost:~#
root@localhost:~#
root@localhost:~# uname -a
Linux localhost 3.10.19-rt11-WR6.0.0.0_preempt-rt #1 SMP PREEMPT RT Mon Nov 25 10:41:15 CST 2013 armv7l GNU/Linux
