lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 10 Oct 2022 18:01:52 -0700 From: Joe Damato <jdamato@...tly.com> To: Jakub Kicinski <kuba@...nel.org> Cc: netdev@...r.kernel.org, davem@...emloft.net, edumazet@...gle.com Subject: Re: [net-next PATCH] net: core: Add napi_complete_done tracepoint On Mon, Oct 10, 2022 at 05:58:24PM -0700, Jakub Kicinski wrote: > On Mon, 10 Oct 2022 11:21:34 -0700 Joe Damato wrote: > > Add a tracepoint to help debug napi_complete_done. Users who set > > defer_hard_irqs and the GRO timer can use this tracepoint to better > > understand what impact these options have when their NIC driver calls > > napi_complete_done. > > > > perf trace can be used to enable the tracepoint and the output can be > > examined to determine which settings should be adjusted. > > Are you familiar with bpftrace, and it's ability to attach to kfunc > and kretfunc? We mostly add tracepoints to static functions which get > inlined these days. Fair enough; I'll avoid sending patches like that in the future. It's been helpful for me, but point taken. Sorry for the noise.
Powered by blists - more mailing lists