From: Arnd Bergmann <arnd@arndb.de>
To: paulmck@linux.vnet.ibm.com
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
cbe-oss-dev@ozlabs.org, oprofile-list@lists.sourceforge.net,
Carl Love <cel@us.ibm.com>
Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch
Date: Fri, 16 Feb 2007 01:33:13 +0100 [thread overview]
Message-ID: <200702160133.14330.arnd@arndb.de> (raw)
In-Reply-To: <20070215215047.GE1913@linux.vnet.ibm.com>
On Thursday 15 February 2007 22:50, Paul E. McKenney wrote:
> Is this 1.5ms with interrupts disabled? =A0This time period is problematic
> from a realtime perspective if so -- need to be able to preempt.
No, interrupts should be enabled here. Still, 1.5ms is probably a little
too long without a cond_resched() in case kernel preemption is disabled.
Arnd <><
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: paulmck@linux.vnet.ibm.com
Cc: Carl Love <cel@us.ibm.com>,
linuxppc-dev@ozlabs.org, cbe-oss-dev@ozlabs.org,
oprofile-list@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch
Date: Fri, 16 Feb 2007 01:33:13 +0100 [thread overview]
Message-ID: <200702160133.14330.arnd@arndb.de> (raw)
In-Reply-To: <20070215215047.GE1913@linux.vnet.ibm.com>
On Thursday 15 February 2007 22:50, Paul E. McKenney wrote:
> Is this 1.5ms with interrupts disabled? This time period is problematic
> from a realtime perspective if so -- need to be able to preempt.
No, interrupts should be enabled here. Still, 1.5ms is probably a little
too long without a cond_resched() in case kernel preemption is disabled.
Arnd <><
next prev parent reply other threads:[~2007-02-16 0:33 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-14 23:52 [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch Carl Love
2007-02-15 14:37 ` Arnd Bergmann
2007-02-15 14:37 ` Arnd Bergmann
2007-02-15 16:15 ` Maynard Johnson
2007-02-15 16:15 ` Maynard Johnson
2007-02-15 18:13 ` Arnd Bergmann
2007-02-15 18:13 ` Arnd Bergmann
2007-02-15 20:21 ` Carl Love
2007-02-15 20:21 ` Carl Love
2007-02-15 21:03 ` Arnd Bergmann
2007-02-15 21:03 ` Arnd Bergmann
2007-02-15 21:50 ` Paul E. McKenney
2007-02-15 21:50 ` Paul E. McKenney
2007-02-16 0:33 ` Arnd Bergmann [this message]
2007-02-16 0:33 ` Arnd Bergmann
2007-02-16 0:32 ` Maynard Johnson
2007-02-16 0:32 ` Maynard Johnson
2007-02-16 17:14 ` Arnd Bergmann
2007-02-16 17:14 ` Arnd Bergmann
2007-02-16 21:43 ` Maynard Johnson
2007-02-16 21:43 ` Maynard Johnson
2007-02-18 23:18 ` Maynard Johnson
2007-02-18 23:18 ` Maynard Johnson
-- strict thread matches above, loose matches on Subject: below --
2007-02-22 0:02 Carl Love
2007-02-26 23:50 ` Arnd Bergmann
2007-02-26 23:50 ` Arnd Bergmann
2007-02-27 1:31 ` Michael Ellerman
2007-02-27 1:31 ` Michael Ellerman
2007-02-27 16:52 ` Maynard Johnson
2007-02-27 16:52 ` Maynard Johnson
2007-02-28 1:44 ` Arnd Bergmann
2007-02-28 1:44 ` Arnd Bergmann
2007-02-06 0:28 [RFC,PATCH] CELL PPU " Carl Love
2007-02-06 23:02 ` [Cbe-oss-dev] [RFC, PATCH] CELL " Carl Love
2007-02-06 23:02 ` Carl Love
2007-02-07 15:41 ` Maynard Johnson
2007-02-07 15:41 ` Maynard Johnson
2007-02-07 22:48 ` Michael Ellerman
2007-02-07 22:48 ` Michael Ellerman
2007-02-08 15:03 ` Maynard Johnson
2007-02-08 15:03 ` Maynard Johnson
2007-02-08 14:18 ` Milton Miller
2007-02-08 14:18 ` Milton Miller
2007-02-08 17:21 ` Arnd Bergmann
2007-02-08 17:21 ` Arnd Bergmann
2007-02-08 18:01 ` Adrian Reber
2007-02-08 18:01 ` Adrian Reber
2007-02-08 22:51 ` Carl Love
2007-02-08 22:51 ` Carl Love
2007-02-09 2:46 ` Milton Miller
2007-02-09 2:46 ` Milton Miller
2007-02-09 16:17 ` Carl Love
2007-02-09 16:17 ` Carl Love
2007-02-11 22:46 ` Milton Miller
2007-02-11 22:46 ` Milton Miller
2007-02-12 16:38 ` Carl Love
2007-02-12 16:38 ` Carl Love
2007-02-09 18:47 ` Milton Miller
2007-02-09 18:47 ` Milton Miller
2007-02-09 19:10 ` Arnd Bergmann
2007-02-09 19:10 ` Arnd Bergmann
2007-02-09 19:46 ` Milton Miller
2007-02-09 19:46 ` Milton Miller
2007-02-08 23:59 ` Maynard Johnson
2007-02-08 23:59 ` Maynard Johnson
2007-02-09 18:03 ` Milton Miller
2007-02-09 18:03 ` Milton Miller
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