From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH 03/12] powerpc: Rework runlatch code
Date: Fri, 06 Apr 2012 08:12:41 +1000 [thread overview]
Message-ID: <1333663961.3040.34.camel@pasglop> (raw)
In-Reply-To: <m2vcldamh2.fsf@igel.home>
On Thu, 2012-04-05 at 23:38 +0200, Andreas Schwab wrote:
> Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:
>
> > This moves the inlines into system.h and changes the runlatch
> > code to use the thread local flags (non-atomic) rather than
> > the TIF flags (atomic) to keep track of the latch state.
> >
> > The code to turn it back on in an asynchronous interrupt is
> > now simplified and partially inlined.
>
> This breaks the X server in that it no longer receives SIGIO signals.
Interesting. I have not observed that on my machine here, however I have
seen on my dual G5 (and not on the quad) some occasional loss of
interrupts for seconds which might be related.
Have you verified that you can "fix" it with reverting just the above
patch ? I would have more easily blamed the rest of my series than this
specific one... Anyways, I'll have a closer look but it might have to
wait for tuesday.
Cheers,
Ben.
next prev parent reply other threads:[~2012-04-05 22:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-02 9:35 [PATCH 00/12] powerpc: Low level spring cleaning Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 01/12] powerpc: Remove legacy iSeries bits from assembly files Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 02/12] powerpc: Use the same interrupt prolog for perfmon as other interrupts Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 03/12] powerpc: Rework runlatch code Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 04/12] powerpc: Improve 64-bit syscall entry/exit Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 05/12] powerpc: Improve behaviour of irq tracing on 64-bit exception entry Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 06/12] powerpc: Disable interrupts in 64-bit kernel FP and vector faults Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 07/12] powerpc: Call do_page_fault() with interrupts off Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 08/12] powerpc: Add support for page fault retry and fatal signals Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 09/12] powerpc/xmon: Add display of soft & hard irq states Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 10/12] powerpc: Fix register clobbering when accumulating stolen time Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 11/12] powerpc: Replace mfmsr instructions with load from PACA kernel_msr field Benjamin Herrenschmidt
2012-03-02 9:35 ` [PATCH 12/12] powerpc: Rework lazy-interrupt handling Benjamin Herrenschmidt
2012-03-04 23:11 ` Benjamin Herrenschmidt
[not found] ` <1330680922-6894-4-git-send-email-benh__48089.0872575857$1330681158$gmane$org@kernel.crashing.org>
2012-04-05 21:38 ` [PATCH 03/12] powerpc: Rework runlatch code Andreas Schwab
2012-04-05 22:12 ` Benjamin Herrenschmidt [this message]
2012-04-05 23:05 ` Andreas Schwab
2012-04-11 0:46 ` Benjamin Herrenschmidt
2012-04-11 9:09 ` Andreas Schwab
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