From: Santosh Shilimkar <santosh.shilimkar@ti.com> To: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, ccross@android.com, linus.ml.walleij@gmail.com, linux-omap@vger.kernel.org Subject: RE: [PATCH 3/5] ARM: twd: Add context save restore support Date: Mon, 24 Jan 2011 16:44:57 +0530 [thread overview] Message-ID: <c51db1b07546a34c74311392880d66de@mail.gmail.com> (raw) In-Reply-To: <20110124110609.GJ16202@n2100.arm.linux.org.uk> > -----Original Message----- > From: Russell King - ARM Linux [mailto:linux@arm.linux.org.uk] > Sent: Monday, January 24, 2011 4:36 PM > To: Santosh Shilimkar > Cc: linux-arm-kernel@lists.infradead.org; catalin.marinas@arm.com; > ccross@android.com; linus.ml.walleij@gmail.com; linux- > omap@vger.kernel.org > Subject: Re: [PATCH 3/5] ARM: twd: Add context save restore support > > On Mon, Jan 24, 2011 at 02:21:17PM +0530, Santosh Shilimkar wrote: > > In CPU low power state, local timer looses its register context. > This > > patch adds context save restore hooks which can be used by > platforms > > appropriately. > > I thought the whole point of CLOCK_EVT_FEAT_C3STOP was that the > generic > timer stuff wouldn't rely on it being kept alive? > > Hmm, it looks like we bypass the clockevents code by only setting > the > TWD load value at initialization time, not when we switch to > periodic > mode. We really ought to rewrite it whenever we switch back to > periodic > mode. > Idea looks good though am not sure the one shot mode. > I suspect fixing that means you won't need this save/restore > support. Will try it out. Regards, Santosh
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From: santosh.shilimkar@ti.com (Santosh Shilimkar) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 3/5] ARM: twd: Add context save restore support Date: Mon, 24 Jan 2011 16:44:57 +0530 [thread overview] Message-ID: <c51db1b07546a34c74311392880d66de@mail.gmail.com> (raw) In-Reply-To: <20110124110609.GJ16202@n2100.arm.linux.org.uk> > -----Original Message----- > From: Russell King - ARM Linux [mailto:linux at arm.linux.org.uk] > Sent: Monday, January 24, 2011 4:36 PM > To: Santosh Shilimkar > Cc: linux-arm-kernel at lists.infradead.org; catalin.marinas at arm.com; > ccross at android.com; linus.ml.walleij at gmail.com; linux- > omap at vger.kernel.org > Subject: Re: [PATCH 3/5] ARM: twd: Add context save restore support > > On Mon, Jan 24, 2011 at 02:21:17PM +0530, Santosh Shilimkar wrote: > > In CPU low power state, local timer looses its register context. > This > > patch adds context save restore hooks which can be used by > platforms > > appropriately. > > I thought the whole point of CLOCK_EVT_FEAT_C3STOP was that the > generic > timer stuff wouldn't rely on it being kept alive? > > Hmm, it looks like we bypass the clockevents code by only setting > the > TWD load value at initialization time, not when we switch to > periodic > mode. We really ought to rewrite it whenever we switch back to > periodic > mode. > Idea looks good though am not sure the one shot mode. > I suspect fixing that means you won't need this save/restore > support. Will try it out. Regards, Santosh
next prev parent reply other threads:[~2011-01-24 11:15 UTC|newest] Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-01-24 8:51 [PATCH 0/5] ARM: Few patches for PM enablement Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-24 8:51 ` [PATCH 1/5] ARM: gic: Add hooks for architecture specific extensions Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-25 3:03 ` Colin Cross 2011-01-25 3:03 ` Colin Cross 2011-01-25 20:54 ` Colin Cross 2011-01-25 20:54 ` Colin Cross 2011-01-26 7:22 ` Santosh Shilimkar 2011-01-26 7:22 ` Santosh Shilimkar 2011-01-26 7:23 ` Colin Cross 2011-01-26 7:23 ` Colin Cross 2011-01-26 7:31 ` Santosh Shilimkar 2011-01-26 7:31 ` Santosh Shilimkar 2011-01-26 7:52 ` Colin Cross 2011-01-26 7:52 ` Colin Cross 2011-01-26 7:55 ` Santosh Shilimkar 2011-01-26 7:55 ` Santosh Shilimkar 2011-01-24 8:51 ` [PATCH 2/5] ARM: gic: Add distributor and interface enable/disable accessory api Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-03-01 5:58 ` Santosh Shilimkar 2011-03-01 5:58 ` Santosh Shilimkar 2011-01-24 8:51 ` [PATCH 3/5] ARM: twd: Add context save restore support Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-24 11:06 ` Russell King - ARM Linux 2011-01-24 11:06 ` Russell King - ARM Linux 2011-01-24 11:11 ` Russell King - ARM Linux 2011-01-24 11:11 ` Russell King - ARM Linux 2011-01-24 11:16 ` Santosh Shilimkar 2011-01-24 11:16 ` Santosh Shilimkar 2011-01-25 7:39 ` Colin Cross 2011-01-25 7:39 ` Colin Cross 2011-01-25 10:32 ` Russell King - ARM Linux 2011-01-25 10:32 ` Russell King - ARM Linux 2011-01-25 13:23 ` Thomas Gleixner 2011-01-25 13:23 ` Thomas Gleixner 2011-01-25 13:37 ` Russell King - ARM Linux 2011-01-25 13:37 ` Russell King - ARM Linux 2011-01-25 13:55 ` Santosh Shilimkar 2011-01-25 13:55 ` Santosh Shilimkar 2011-01-25 14:12 ` Thomas Gleixner 2011-01-25 14:12 ` Thomas Gleixner 2011-01-25 14:15 ` Russell King - ARM Linux 2011-01-25 14:15 ` Russell King - ARM Linux 2011-01-25 14:24 ` Thomas Gleixner 2011-01-25 14:24 ` Thomas Gleixner 2011-01-25 16:04 ` Santosh Shilimkar 2011-01-25 16:04 ` Santosh Shilimkar 2011-01-25 16:13 ` Russell King - ARM Linux 2011-01-25 16:13 ` Russell King - ARM Linux 2011-01-25 16:14 ` Santosh Shilimkar 2011-01-25 16:14 ` Santosh Shilimkar 2011-01-25 11:29 ` Russell King - ARM Linux 2011-01-25 11:29 ` Russell King - ARM Linux 2011-01-25 11:40 ` Santosh Shilimkar 2011-01-25 11:40 ` Santosh Shilimkar 2011-01-25 11:48 ` Russell King - ARM Linux 2011-01-25 11:48 ` Russell King - ARM Linux 2011-01-25 12:08 ` Santosh Shilimkar 2011-01-25 12:08 ` Santosh Shilimkar 2011-01-25 12:17 ` Russell King - ARM Linux 2011-01-25 12:17 ` Russell King - ARM Linux 2011-01-25 12:20 ` Santosh Shilimkar 2011-01-25 12:20 ` Santosh Shilimkar 2011-01-25 18:44 ` Colin Cross 2011-01-25 18:44 ` Colin Cross 2011-01-24 11:14 ` Santosh Shilimkar [this message] 2011-01-24 11:14 ` Santosh Shilimkar 2011-01-24 8:51 ` [PATCH 4/5] ARM: scu: Move register defines to header file Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-25 11:46 ` Russell King - ARM Linux 2011-01-25 11:46 ` Russell King - ARM Linux 2011-01-25 12:02 ` Santosh Shilimkar 2011-01-25 12:02 ` Santosh Shilimkar 2011-01-25 12:16 ` Russell King - ARM Linux 2011-01-25 12:16 ` Russell King - ARM Linux 2011-01-25 12:29 ` Russell King - ARM Linux 2011-01-25 12:29 ` Russell King - ARM Linux 2011-01-25 12:39 ` Santosh Shilimkar 2011-01-25 12:39 ` Santosh Shilimkar 2011-01-25 12:36 ` Santosh Shilimkar 2011-01-25 12:36 ` Santosh Shilimkar 2011-01-25 12:56 ` Russell King - ARM Linux 2011-01-25 12:56 ` Russell King - ARM Linux 2011-01-25 13:04 ` Russell King - ARM Linux 2011-01-25 13:04 ` Russell King - ARM Linux 2011-01-25 13:06 ` Russell King - ARM Linux 2011-01-25 13:06 ` Russell King - ARM Linux 2011-01-25 18:23 ` Santosh Shilimkar 2011-01-25 18:23 ` Santosh Shilimkar 2011-02-04 10:41 ` Russell King - ARM Linux 2011-02-04 10:41 ` Russell King - ARM Linux 2011-02-04 10:46 ` Santosh Shilimkar 2011-02-04 10:46 ` Santosh Shilimkar 2011-02-04 11:30 ` Russell King - ARM Linux 2011-02-04 11:30 ` Russell King - ARM Linux 2011-02-04 11:34 ` Santosh Shilimkar 2011-02-04 11:34 ` Santosh Shilimkar 2011-02-07 9:51 ` Santosh Shilimkar 2011-02-07 9:51 ` Santosh Shilimkar 2011-02-07 10:18 ` Russell King - ARM Linux 2011-02-07 10:18 ` Russell King - ARM Linux 2011-02-07 10:21 ` Santosh Shilimkar 2011-02-07 10:21 ` Santosh Shilimkar 2011-02-07 10:23 ` Russell King - ARM Linux 2011-02-07 10:23 ` Russell King - ARM Linux 2011-02-07 10:30 ` Santosh Shilimkar 2011-02-07 10:30 ` Santosh Shilimkar 2011-02-10 14:49 ` Santosh Shilimkar 2011-02-10 14:49 ` Santosh Shilimkar 2011-02-10 16:13 ` Russell King - ARM Linux 2011-02-10 16:13 ` Russell King - ARM Linux 2011-02-10 16:26 ` Santosh Shilimkar 2011-02-10 16:26 ` Santosh Shilimkar 2011-01-25 13:05 ` Santosh Shilimkar 2011-01-25 13:05 ` Santosh Shilimkar 2011-01-25 13:41 ` Russell King - ARM Linux 2011-01-25 13:41 ` Russell King - ARM Linux 2011-01-25 13:47 ` Santosh Shilimkar 2011-01-25 13:47 ` Santosh Shilimkar 2011-01-24 8:51 ` [PATCH 5/5] ARM: smp: Skip secondary cpu calibration to speed-up boot Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-24 10:30 ` Russell King - ARM Linux 2011-01-24 10:30 ` Russell King - ARM Linux 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-24 8:51 ` Santosh Shilimkar 2011-01-24 8:55 ` Santosh Shilimkar 2011-01-24 8:55 ` Santosh Shilimkar 2011-02-04 10:19 ` [PATCH 0/5] ARM: Few patches for PM enablement Santosh Shilimkar 2011-02-04 10:19 ` Santosh Shilimkar 2011-02-11 14:24 ` Santosh Shilimkar 2011-02-11 14:24 ` Santosh Shilimkar
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