Le 08/10/2015 21:12, Scott Wood a écrit :
On Wed, 2015-10-07 at 14:49 +0200, Christophe Leroy wrote:
Le 29/09/2015 02:29, Scott Wood a écrit :
On Tue, Sep 22, 2015 at 06:51:13PM +0200, Christophe Leroy wrote:
flush/clean/invalidate _dcache_range() functions are all very
similar and are quite
On Wed, 2015-10-07 at 14:49 +0200, Christophe Leroy wrote:
> Le 29/09/2015 02:29, Scott Wood a écrit :
> > On Tue, Sep 22, 2015 at 06:51:13PM +0200, Christophe Leroy wrote:
> > > flush/clean/invalidate _dcache_range() functions are all very
> > > similar and are quite short. They are mainly used in
Le 29/09/2015 02:29, Scott Wood a écrit :
On Tue, Sep 22, 2015 at 06:51:13PM +0200, Christophe Leroy wrote:
flush/clean/invalidate _dcache_range() functions are all very
similar and are quite short. They are mainly used in __dma_sync()
perf_event locate them in the top 3 consumming functions d
On Tue, Sep 22, 2015 at 06:51:13PM +0200, Christophe Leroy wrote:
> flush/clean/invalidate _dcache_range() functions are all very
> similar and are quite short. They are mainly used in __dma_sync()
> perf_event locate them in the top 3 consumming functions during
> heavy ethernet activity
>
> They
On Wed, 2015-09-23 at 00:49 +0200, Christophe Leroy wrote:
> Le 23/09/2015 00:34, Scott Wood a écrit :
> > On Tue, 2015-09-22 at 22:57 +0200, Christophe Leroy wrote:
> > > > Here is what I get in asm. First one is with "if (i) mb();". We see
> > > > gcc
> > > > puts a beqlr. This is the form that
Le 23/09/2015 00:34, Scott Wood a écrit :
On Tue, 2015-09-22 at 22:57 +0200, Christophe Leroy wrote:
>Here is what I get in asm. First one is with "if (i) mb();". We see gcc
>puts a beqlr. This is the form that is closest to what we had in the
>former misc_32.S
>Second one if with "mb()". Here
On Tue, 2015-09-22 at 22:57 +0200, Christophe Leroy wrote:
> Here is what I get in asm. First one is with "if (i) mb();". We see gcc
> puts a beqlr. This is the form that is closest to what we had in the
> former misc_32.S
> Second one if with "mb()". Here we get a branch to sync for a useless sy
Le 22/09/2015 22:38, Joakim Tjernlund a écrit :
On Tue, 2015-09-22 at 15:35 -0500, Scott Wood wrote:
On Tue, 2015-09-22 at 20:32 +, Joakim Tjernlund wrote:
On Tue, 2015-09-22 at 15:14 -0500, Scott Wood wrote:
On Tue, 2015-09-22 at 19:55 +, Joakim Tjernlund wrote:
On Tue, 2015-09-22
On Tue, 2015-09-22 at 15:35 -0500, Scott Wood wrote:
> On Tue, 2015-09-22 at 20:32 +, Joakim Tjernlund wrote:
> > On Tue, 2015-09-22 at 15:14 -0500, Scott Wood wrote:
> > > On Tue, 2015-09-22 at 19:55 +, Joakim Tjernlund wrote:
> > > > On Tue, 2015-09-22 at 14:42 -0500, Scott Wood wrote:
>
On Tue, 2015-09-22 at 20:32 +, Joakim Tjernlund wrote:
> On Tue, 2015-09-22 at 15:14 -0500, Scott Wood wrote:
> > On Tue, 2015-09-22 at 19:55 +, Joakim Tjernlund wrote:
> > > On Tue, 2015-09-22 at 14:42 -0500, Scott Wood wrote:
> > > > On Tue, 2015-09-22 at 19:34 +, Joakim Tjernlund wro
On Tue, 2015-09-22 at 15:14 -0500, Scott Wood wrote:
> On Tue, 2015-09-22 at 19:55 +, Joakim Tjernlund wrote:
> > On Tue, 2015-09-22 at 14:42 -0500, Scott Wood wrote:
> > > On Tue, 2015-09-22 at 19:34 +, Joakim Tjernlund wrote:
> > > > On Tue, 2015-09-22 at 13:58 -0500, Scott Wood wrote:
>
On Tue, 2015-09-22 at 19:55 +, Joakim Tjernlund wrote:
> On Tue, 2015-09-22 at 14:42 -0500, Scott Wood wrote:
> > On Tue, 2015-09-22 at 19:34 +, Joakim Tjernlund wrote:
> > > On Tue, 2015-09-22 at 13:58 -0500, Scott Wood wrote:
> > > > On Tue, 2015-09-22 at 18:12 +, Joakim Tjernlund wro
> > And generally the one proposing uglification-for-optimization should
> > provide
> > the evidence. :-)
>
> When it comes to gcc, past history is my evidence until proven otherwise :)
> Maybe I will check again ...
OK then:
static inline void mb(void)
{
__asm__ __volatile__ ("sync" :
On Tue, 2015-09-22 at 14:42 -0500, Scott Wood wrote:
> On Tue, 2015-09-22 at 19:34 +, Joakim Tjernlund wrote:
> > On Tue, 2015-09-22 at 13:58 -0500, Scott Wood wrote:
> > > On Tue, 2015-09-22 at 18:12 +, Joakim Tjernlund wrote:
> > > > On Tue, 2015-09-22 at 18:51 +0200, Christophe Leroy wro
On Tue, 2015-09-22 at 19:34 +, Joakim Tjernlund wrote:
> On Tue, 2015-09-22 at 13:58 -0500, Scott Wood wrote:
> > On Tue, 2015-09-22 at 18:12 +, Joakim Tjernlund wrote:
> > > On Tue, 2015-09-22 at 18:51 +0200, Christophe Leroy wrote:
> > > > flush/clean/invalidate _dcache_range() functions
On Tue, 2015-09-22 at 13:58 -0500, Scott Wood wrote:
> On Tue, 2015-09-22 at 18:12 +, Joakim Tjernlund wrote:
> > On Tue, 2015-09-22 at 18:51 +0200, Christophe Leroy wrote:
> > > flush/clean/invalidate _dcache_range() functions are all very
> > > similar and are quite short. They are mainly use
On Tue, 2015-09-22 at 18:12 +, Joakim Tjernlund wrote:
> On Tue, 2015-09-22 at 18:51 +0200, Christophe Leroy wrote:
> > flush/clean/invalidate _dcache_range() functions are all very
> > similar and are quite short. They are mainly used in __dma_sync()
> > perf_event locate them in the top 3 con
On Tue, 2015-09-22 at 18:51 +0200, Christophe Leroy wrote:
> flush/clean/invalidate _dcache_range() functions are all very
> similar and are quite short. They are mainly used in __dma_sync()
> perf_event locate them in the top 3 consumming functions during
> heavy ethernet activity
>
> They are go
flush/clean/invalidate _dcache_range() functions are all very
similar and are quite short. They are mainly used in __dma_sync()
perf_event locate them in the top 3 consumming functions during
heavy ethernet activity
They are good candidate for inlining, as __dma_sync() does
almost nothing but call
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