On Tue, Sep 18, 2018 at 07:14:13PM -0400, Steven Rostedt wrote: > > Linus (aka Greg), > > Vaibhav Nagarnaik found that modifying the ring buffer size could cause > a huge latency in the system because it does a while loop to free pages > without releasing the CPU (on non preempt kernels). In a case where there > are hundreds of thousands of pages to free it could actually cause a system > stall. A properly place cond_resched() solves this issue. > > > Please pull the latest trace-v4.19-rc4 tree, which can be found at: > > > git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git > trace-v4.19-rc4 Ick, line wrapping makes it hard to cut/paste :( Anyway, now pulled and pushed out. greg k-h
