Re: [PATCH] module: ppc64 module CRC...

Re: [PATCH] module: ppc64 module CRC relocation fix causes perf issues

From: Scott Wood <hidden>
Date: 2013-07-17 00:08:27

On 07/16/2013 07:04:05 PM, Benjamin Herrenschmidt wrote:

On Tue, 2013-07-16 at 17:40 -0500, Scott Wood wrote:

quoted

On 07/15/2013 03:47:06 AM, Benjamin Herrenschmidt wrote:

quoted

On Mon, 2013-07-15 at 14:04 +1000, Anton Blanchard wrote:

quoted

Module CRCs are implemented as absolute symbols that get =20

resolved by

quoted

a linker script. We build an intermediate .o that contains an
unresolved symbol for each CRC. genksysms parses this .o, =20

calculates

quoted

the CRCs and writes a linker script that "resolves" the symbols =20

to

quoted

the calc

Scott, can somebody from FSL test that on 32-bit and Ack it ?

Thanks !

Cheers,
Ben.

It boots for me on e500mc and I can insert modules.

=20
But does perf work ? :-)

What specifically should I do to test it?

-Scott=

From: Anton Blanchard <hidden>
Date: 2013-07-18 04:00:39

Hi Scott,

What specifically should I do to test it?

Could you double check perf annotate works? I'm 99% sure it will but
that is what was failing on ppc64.

Anton