[lkml]   [2008]   [Oct]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] rudimentary tracing for Classic RCU
2008/10/9 Paul E. McKenney <>:
> Hello!
> This is a tracing patch for Classic RCU, which creates an "rcu/rcucb"
> file in debugfs. This patch can be handy when you need to work out
> why RCU is refusing to end the current grace period.
> Reading from the file results in something like the following:
> rcu: cur=1129 completed=1128 np=0 s=0
> 0,3,7
> rcu_bh: cur=-287 completed=-287 np=0 s=0
> online: 0-7

Hi Paul,

Why don't you use the ring-buffer tracing engine?
You will really make your life better by putting it as a tracer in
kernel/trace and by using the relevant API.
That will avoid you to manage the debugfs things, the memory
allocation, the buffer managment.....

 \ /
  Last update: 2008-10-09 12:25    [W:0.208 / U:8.520 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site