On 10/22/20 8:21 AM, Prarit Bhargava wrote:
On 10/21/20 1:27 PM, GitLab Bridge on behalf of jeremycline wrote:From: Fedora Kernel Team <kernel-team@xxxxxxxxxxxxxxxxx> Hi, As part of the ongoing rebase effort, the following configuration options need to be reviewed. As a reminder, the ARK configuration flow involves moving unreviewed configuration options from the pending directory to the ark directory. In the diff below, options are removed from the pending directory and added to the ark hierarchy. The final options that need to be ACKed are the files that are being added to the ark hierarchy. If the value for a file that is added should be changed, please reply with a better option. CONFIG_CSD_LOCK_WAIT_DEBUG: This option enables debug prints when CPUs are slow to respond to the smp_call_function*() IPI wrappers. These debug prints include the IPI handler function currently executing (if any) and relevant stack traces. Symbol: CSD_LOCK_WAIT_DEBUG [=n] Type : bool Defined at lib/Kconfig.debug:1380 Prompt: Debugging for csd_lock_wait(), called from smp_call_function*() Depends on: DEBUG_KERNEL [=y] && 64BIT [=y] Location: -> Kernel hacking -> Lock Debugging (spinlocks, mutexes, etc...)longman, should we turn this on in the base kernel?
This option looks useful. However, it depends on what performance impact it has. We probably need to run some test to find out. Let enable only in the debug kernel for now.
--- CONFIG_SCF_TORTURE_TEST: This option provides a kernel module that runs torture tests on the smp_call_function() family of primitives. The kernel module may be built after the fact on the running kernel to be tested, if desired. Symbol: SCF_TORTURE_TEST [=n] Type : tristate Defined at lib/Kconfig.debug:1370 Prompt: torture tests for smp_call_function*() Depends on: DEBUG_KERNEL [=y] Location: -> Kernel hacking -> Lock Debugging (spinlocks, mutexes, etc...) Selects: TORTURE_TEST [=n]This can be Y for debug kernels.
This can be enabled for both debug and non-debug kernel as long as it is packaged in an internal rpm.
-Longman _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx
