All of lore.kernel.org
 help / color / mirror / Atom feed
From: Michael Neuling <mikey@neuling.org>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: ppc-dev <linuxppc-dev@ozlabs.org>, paulus@samba.org
Subject: Re: [POWERPC] minor paca optimisation
Date: Fri, 16 Mar 2007 12:18:09 -0500	[thread overview]
Message-ID: <12742.1174065489@neuling.org> (raw)
In-Reply-To: <20070316174707.8a5ae78c.sfr@canb.auug.org.au>

> Move the slb_shadow_ptr field into the first cache line since it is
> (like evrything there) read only after boot.  It is in fact statically
> initialised and there after only read.
> 
> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

Acked-by: Michael Neuling <mikey@neuling.org>

> ---
>  include/asm-powerpc/paca.h |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> -- 
> Cheers,
> Stephen Rothwell                    sfr@canb.auug.org.au
> 
> diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
> index 0d3adc0..4de851d 100644
> --- a/include/asm-powerpc/paca.h
> +++ b/include/asm-powerpc/paca.h
> @@ -70,6 +70,7 @@ struct paca_struct {
>  	s16 hw_cpu_id;			/* Physical processor number */
>  	u8 cpu_start;			/* At startup, processor spins until */
>  					/* this becomes non-zero. */
> +	struct slb_shadow *slb_shadow_ptr;
>  
>  	/*
>  	 * Now, starting in cacheline 2, the exception save areas
> @@ -101,8 +102,6 @@ struct paca_struct {
>  	u64 user_time;			/* accumulated usermode TB ticks */
>  	u64 system_time;		/* accumulated system TB ticks */
>  	u64 startpurr;			/* PURR/TB value snapshot */
> -
> -	struct slb_shadow *slb_shadow_ptr;
>  };
>  
>  extern struct paca_struct paca[];
> -- 
> 1.5.0.3
> 
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
> 

      reply	other threads:[~2007-03-16 17:18 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-16  6:47 [POWERPC] minor paca optimisation Stephen Rothwell
2007-03-16 17:18 ` Michael Neuling [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=12742.1174065489@neuling.org \
    --to=mikey@neuling.org \
    --cc=linuxppc-dev@ozlabs.org \
    --cc=paulus@samba.org \
    --cc=sfr@canb.auug.org.au \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.