Re: yield() in i2c non-happy paths hits BUG under -rt patch
From: Thomas Gleixner <hidden>
Date: 2009-11-19 13:23:18
Also in:
linux-i2c, lkml
Possibly related (same subject, not in this thread)
- 2009-11-08 · Re: yield() in i2c non-happy paths hits BUG under -rt patch · Sven-Thorsten Dietrich <hidden>
- 2009-11-07 · Re: yield() in i2c non-happy paths hits BUG under -rt patch · Jean Delvare <hidden>
- 2009-11-07 · yield() in i2c non-happy paths hits BUG under -rt patch · Leon Woestenberg <hidden>
On Thu, 19 Nov 2009, Peter Zijlstra wrote:
On Thu, 2009-11-19 at 14:11 +0100, Thomas Gleixner wrote:quoted
quoted
You say "NOOP by default", does this imply there is a way to change this?There is a sysctl: sysctl_sched_compat_yieldThis makes yield() place current behind all other tasks, and sucks too for some workloads.
yield() sucks anyway, so it depends which flavour of suckage you
prefer.
tglx