Re: [PATCH -tip 0/4] rtmutex: Spin on owner

Re: [PATCH -tip 0/4] rtmutex: Spin on owner

[Davidlohr Bueso]

Screwed up email, will resend. Sorry about the noise.

[PATCH -tip 0/4] rtmutex: Spin on owner

[Davidlohr Bueso]

Hello,

First three patches are straightforward and found while
going through the code. Patch 4 is the actual meat of the
set, but similar to what we have already in regular mutexes.
While having optimistic spinning in rtmutexes is a desired
feature, I've marked it RFC as I could very well have missed
something inherint in the rt flavor.

Details in the individual patches. Passes pi tests from
Darren's futextest suite as well as all weekend running
pi_stress from rt-tests on a 60 core box.

Thanks!

Davidlohr Bueso (4):
  locking/rtmutex: Implement lockless top-waiter wakeup
  locking/rtmutex: Use cmp-cmpxchg
  locking/rtmutex: Update stale plist comments
  locking/rtmutex: Support spin on owner (osq)

 include/linux/rtmutex.h  |   4 ++
 kernel/Kconfig.locks     |   4 ++
 kernel/locking/rtmutex.c | 175 +++++++++++++++++++++++++++++++++++++++++------
 3 files changed, 162 insertions(+), 21 deletions(-)

-- 
2.1.4

Re: [PATCH -tip 0/4] rtmutex: Spin on owner

[Davidlohr Bueso]

ping?

Re: [PATCH -tip 0/4] rtmutex: Spin on owner

[Thomas Gleixner]

On Mon, 25 May 2015, Davidlohr Bueso wrote:

> ping?

pong!

It's in my review backlog list and it's gonna stay there until I
return from vacation and conferencing end of next week.

Thanks,

	tglx