Re: [PATCH v2 0/7] sched: Split cpuacct

[Ingo Molnar]

* Ingo Molnar <mingo@xxxxxxxxxx> wrote:

> 
> * Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> 
> > On Fri, 2013-03-29 at 14:36 +0800, Li Zefan wrote:
> > 
> > > - This patchset splits cpuacct out of core scheduler code.
> > > - Plus two small optimizations.
> > > 
> > 
> > > ---
> > >  kernel/sched/Makefile  |   1 +
> > >  kernel/sched/core.c    | 228 +----------------------------------------------
> > >  kernel/sched/cpuacct.c | 303 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > >  kernel/sched/cpuacct.h |  22 +++++
> > >  kernel/sched/cputime.c |  18 +---
> > >  kernel/sched/sched.h   |  48 +---------
> > >  6 files changed, 330 insertions(+), 290 deletions(-)
> > 
> > Looks good from a quick glance, thanks for doing this.
> > 
> > Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> 
> Looks good to me too, so I added it to tip:sched/core.
> 
> The only breakage it cased was on UML:
> 
> home/mingo/tip/kernel/sched/cpuacct.c:94:2: error: implicit declaration of 
> function 'ERR_PTR' [-Werror=implicit-function-declaration]
> 
> I suspect it's a previously hidden header file dependency assumption and the patch 
> below will fix it.

diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index ef57ab6..dbb7e2c 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -6,6 +6,7 @@
 #include <linux/seq_file.h>
 #include <linux/rcupdate.h>
 #include <linux/kernel_stat.h>
+#include <linux/err.h>
 
 #include "sched.h"
 
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