From: Octavian Purdila <opurdila@ixiacom•com>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: [PATCH 0/2] oprofile support for ppc750
Date: Wed, 7 Jan 2009 14:17:11 +0200 [thread overview]
Message-ID: <200901071417.11745.opurdila@ixiacom.com> (raw)
In-Reply-To: <1231296754.14860.51.camel@pasglop>
=46rom: Benjamin Herrenschmidt <benh@kernel•crashing.org>
> On Tue, 2009-01-06 at 14:55 +0200, Octavian Purdila wrote:
> > Adds oprofile support for ppc750. ppc750 performance counters
> > interface is similar with G4, but it only has 4 performance counters
> > instead of 6.
> >
> > I tested this on a PPC750GX and it seems to work fine.
>
> I'm not too sure about using the same model as 74xx...=20
I've double checked the bits, and it looks to me that what is implemented i=
n=20
op_model_7450.c maps with my User=E2=80=99s Manual IBM PowerPC 750GX and 75=
0GL RISC=20
Microprocessor copy :)
> I have some
> patches that haven't been released yet from Jack Miller to implement the
> full OP support for 750 but they appear to cause crashes.
>
Were they posted somewhere?
> There is a known HW bug in various 750's that basically make the
> performance interrupt unuseable. I -think- it may have been fixed in the
> very latest revision of the 750CL though but I'm not sure.
Yeah, I've read that somewhere, but I did not notice any issues with 750GX =
I=20
am using - so far.
Thanks,
tavi
prev parent reply other threads:[~2009-01-07 12:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-06 12:55 [PATCH 0/2] oprofile support for ppc750 Octavian Purdila
2009-01-06 12:55 ` [PATCH 1/2] powerpc: G4 oprofile: variable number of counters Octavian Purdila
2009-02-04 5:22 ` Benjamin Herrenschmidt
2009-02-24 12:09 ` Octavian Purdila
2009-02-24 12:09 ` [PATCH v2 " Octavian Purdila
2009-02-24 12:09 ` [PATCH v2 2/2] powerpc: oprofile: enable support for ppc750 processors Octavian Purdila
2009-02-26 22:30 ` Andy Fleming
2009-02-26 23:13 ` Benjamin Herrenschmidt
2009-02-27 11:57 ` Octavian Purdila
2009-01-06 12:55 ` [PATCH " Octavian Purdila
2009-03-04 4:47 ` Benjamin Herrenschmidt
2009-03-04 12:02 ` Octavian Purdila
2009-01-07 2:52 ` [PATCH 0/2] oprofile support for ppc750 Benjamin Herrenschmidt
2009-01-07 12:17 ` Octavian Purdila [this message]
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