Re: [Bug] ARM 'perf' regression by commit a43cb95d5

From: Ming Lei
Date: Tue May 28 2013 - 06:19:00 EST


On Fri, May 17, 2013 at 11:59 PM, Will Deacon <will.deacon@xxxxxxx> wrote:
>
> Ok, I tried to reproduce this on my TC2 with 3.10-rc1 and perf top looks
> fine. I also tried loading your spi-altera module and it made no difference.
>
> I'm using a fairly old perf tool (reports its version as 3.5.5).

It isn't related with perf tool.

Finally, looks the problem disappeared after upgrading gcc to "gcc version
4.7.3 (Sourcery CodeBench Lite 2013.05-24)" from "gcc version 4.5.1
(Sourcery G++ Lite 2010.09-50)", so it should be caused by compiler.


Thanks,
--
Ming Lei
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