Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-03-01 Thread Steven Rostedt
On Tue, 1 Mar 2016 09:45:05 -0500 Steven Rostedt wrote: > On Sat, 27 Feb 2016 11:32:06 +0100 > Sebastian Andrzej Siewior wrote: > > > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > > 3.18.27-rt26-rc1 stable review patch. > > > If anyone has any objections, please let me know. >

Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-03-01 Thread Steven Rostedt
On Sat, 27 Feb 2016 11:32:06 +0100 Sebastian Andrzej Siewior wrote: > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > 3.18.27-rt26-rc1 stable review patch. > > If anyone has any objections, please let me know. > > Please merge this one along with "kernel: migrate_disable() do fastpat

Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-02-29 Thread Thomas Gleixner
On Mon, 29 Feb 2016, Steven Rostedt wrote: > On Sat, 27 Feb 2016 11:32:06 +0100 > Sebastian Andrzej Siewior wrote: > > > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > > 3.18.27-rt26-rc1 stable review patch. > > > If anyone has any objections, please let me know. > > > > Please mer

Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-02-29 Thread Steven Rostedt
On Sat, 27 Feb 2016 11:32:06 +0100 Sebastian Andrzej Siewior wrote: > On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > > 3.18.27-rt26-rc1 stable review patch. > > If anyone has any objections, please let me know. > > Please merge this one along with "kernel: migrate_disable() do fastpat

Re: [PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-02-27 Thread Sebastian Andrzej Siewior
On 2016-02-26 16:32:42 [-0500], Steven Rostedt wrote: > 3.18.27-rt26-rc1 stable review patch. > If anyone has any objections, please let me know. Please merge this one along with "kernel: migrate_disable() do fastpath in atomic & irqs-off". Otherwise we might get recursive with lockdep and CPU-hot

[PATCH RT 07/12] dump stack: dont disable preemption during trace

2016-02-26 Thread Steven Rostedt
3.18.27-rt26-rc1 stable review patch. If anyone has any objections, please let me know. -- From: Sebastian Andrzej Siewior I see here large latencies during a stack dump on x86. The preempt_disable() and get_cpu() should forbid moving the task to another CPU during a stack dump