Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-29 Thread Frederic Weisbecker
On Mon, May 13, 2013 at 06:59:23PM +1000, Benjamin Herrenschmidt wrote: > On Mon, 2013-05-13 at 16:03 +0800, Li Zhong wrote: > > > > To my understanding, it is used to enable RCU user extended quiescent > > state, so RCU on that cpu doesn't need scheduler ticks. And together > > with some other co

Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-29 Thread Frederic Weisbecker
On Mon, May 13, 2013 at 04:03:13PM +0800, Li Zhong wrote: > On Mon, 2013-05-13 at 15:51 +1000, Benjamin Herrenschmidt wrote: > > On Mon, 2013-05-13 at 13:21 +0800, Li Zhong wrote: > > > These patches try to support context tracking for Power arch, beginning > > > with > > > 64-bit pSeries. The cod

Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-13 Thread Li Zhong
On Mon, 2013-05-13 at 18:59 +1000, Benjamin Herrenschmidt wrote: > On Mon, 2013-05-13 at 16:03 +0800, Li Zhong wrote: > > > > To my understanding, it is used to enable RCU user extended quiescent > > state, so RCU on that cpu doesn't need scheduler ticks. And together > > with some other code(alre

Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-13 Thread Benjamin Herrenschmidt
On Mon, 2013-05-13 at 16:03 +0800, Li Zhong wrote: > > To my understanding, it is used to enable RCU user extended quiescent > state, so RCU on that cpu doesn't need scheduler ticks. And together > with some other code(already in 3.10), we are able to remove the ticks > in some cases (e.g. only 1

Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-13 Thread Li Zhong
On Mon, 2013-05-13 at 15:51 +1000, Benjamin Herrenschmidt wrote: > On Mon, 2013-05-13 at 13:21 +0800, Li Zhong wrote: > > These patches try to support context tracking for Power arch, beginning with > > 64-bit pSeries. The codes are ported from that of the x86_64, and in each > > patch, I listed th

Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-12 Thread Benjamin Herrenschmidt
On Mon, 2013-05-13 at 13:21 +0800, Li Zhong wrote: > These patches try to support context tracking for Power arch, beginning with > 64-bit pSeries. The codes are ported from that of the x86_64, and in each > patch, I listed the corresponding patch for x86. So that's yet another pile of bloat on al

[RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries

2013-05-12 Thread Li Zhong
These patches try to support context tracking for Power arch, beginning with 64-bit pSeries. The codes are ported from that of the x86_64, and in each patch, I listed the corresponding patch for x86. v3: This version is mainly a rebasing, against 3.10-rc1, also as the common code to handle the e