From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Tony Lindgren <tony@atomide.com>
Cc: linux-arm-kernel@lists.arm.linux.org.uk,
linux-omap@vger.kernel.org, Richard Woodruff <r-woodruff2@ti.com>
Subject: Re: [PATCH 02/21] ARM: OMAP: DMTimer: Optimize by adding load and start
Date: Sat, 14 Jun 2008 09:20:29 +0100 [thread overview]
Message-ID: <20080614082028.GM32122@flint.arm.linux.org.uk> (raw)
In-Reply-To: <1212802253-17797-3-git-send-email-tony@atomide.com>
On Fri, Jun 06, 2008 at 06:30:34PM -0700, Tony Lindgren wrote:
> From: Richard Woodruff <r-woodruff2@ti.com>
>
> This patch optimizes the timer load and start sequence. By combining the
> load and start a needless posted wait can be removed from the system timer
> execution path.
>
> * Before patch register writes are taking up .078% @ 500MHz during idle.
>
> Address |total |min |max |avr |count|ratio%
> old\process\default_idle|7.369s |0.0us|999.902ms|14.477ms|509. |62.661%
> ld\Global\cpu_v7_do_idle|4.265s |0.0us|375.786ms|24.374ms|175. |36.270%
> (UNKNOWN)|17.503ms|0.us|531.080us|5.119us|3419. |0.148%
> r\omap_dm_timer_set_load|8.135ms|0.0us|79.887us|15.065us|540. |0.069% <--
> \vmlinux-old\Global\_end|2.023ms|0.0us|4.000us|0.560us|3613. |0.017%
> -old\Global\__raw_readsw|1.962ms|0.0us|108.610us|9.167us|214. |0.016%
> old\smc91x\smc_interrupt|1.353ms|0.0us|10.212us|2.348us|576. |0.011%
> s/namei\__link_path_walk|1.161ms|0.0us|4.310us|0.762us| 1524. |0.009%
> \omap_dm_timer_write_reg|1.085ms|0.0us|126.150us|2.153us|504. |0.009% <--
>
> * After patch timer functions do not show up in top listings for long captures.
Ok. Not for -rc.
prev parent reply other threads:[~2008-06-14 8:20 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <omap-upstream-20080607182613-0-21>
2008-06-07 1:30 ` [PATCH 00/21] Omap upstream patches for post 2.6.26 Tony Lindgren
2008-06-07 1:30 ` [PATCH 01/21] ARM: OMAP: DMTimer: Use posted mode Tony Lindgren
2008-06-07 1:30 ` [PATCH 02/21] ARM: OMAP: DMTimer: Optimize by adding load and start Tony Lindgren
2008-06-07 1:30 ` [PATCH 03/21] ARM: OMAP: Add OMAP3430 base defines Tony Lindgren
2008-06-07 1:30 ` [PATCH 04/21] ARM: OMAP: DMA: Make channels dynamic for multi-boot Tony Lindgren
2008-06-07 1:30 ` [PATCH 05/21] ARM: OMAP: DMA: Remove __REG access Tony Lindgren
2008-06-07 1:30 ` [PATCH 06/21] ARM: OMAP: DMA: Clean-up code Tony Lindgren
2008-06-07 1:30 ` [PATCH 07/21] ARM: OMAP: SRAM: Move sram-fn.S from plat-omap to mach-omap1 Tony Lindgren
2008-06-07 1:30 ` [PATCH 08/21] ARM: OMAP: SRAM: Move omap2 sram-fn.S to sram242x.S Tony Lindgren
2008-06-07 1:30 ` [PATCH 09/21] ARM: OMAP: SRAM: Split sram24xx.S into sram242x.S and sram243x.S Tony Lindgren
2008-06-07 1:30 ` [PATCH 10/21] ARM: OMAP: McBSP: Coding style cleanup on arch/arm/plat-omap/mcbsp.c Tony Lindgren
2008-06-07 1:30 ` [PATCH 11/21] ARM: OMAP: McBSP: Prepare for splitting into omap1 and omap2 code Tony Lindgren
2008-06-07 1:30 ` [PATCH 12/21] ARM: OMAP: McBSP: Add support for mcbsp on mach-omap1 Tony Lindgren
2008-06-07 1:30 ` [PATCH 13/21] ARM: OMAP: McBSP: Add support for mcbsp on mach-omap2 Tony Lindgren
2008-06-07 1:30 ` [PATCH 14/21] ARM: OMAP: Clean up interrupt lines to fix warnings for multi-omap Tony Lindgren
2008-06-07 1:30 ` [PATCH 15/21] ARM: OMAP: CLKFW: Initial debugfs support for omap clock framework Tony Lindgren
2008-06-07 1:30 ` [PATCH 16/21] ARM: OMAP: Change omap_cf.c and omap_nor.c to use omap_readw/writew instead of __REG Tony Lindgren
[not found] ` <1212802253-17797-17-git-send-email-tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2008-06-07 1:30 ` [PATCH 17/21] ARM: OMAP: USB: Change omap USB code to use omap_read/write " Tony Lindgren
2008-06-07 1:30 ` [PATCH 18/21] ARM: OMAP: Remove __REG access for multi-omap Tony Lindgren
2008-06-07 1:30 ` [PATCH 19/21] ARM: OMAP: Introduce omap_globals and prcm access functions " Tony Lindgren
2008-06-07 1:30 ` [PATCH 20/21] ARM: OMAP: Turn CM and PRM access into functions Tony Lindgren
2008-06-07 1:30 ` [PATCH 21/21] ARM: OMAP: Add OMAP chip type structure; clean up mach-omap2/id.c Tony Lindgren
2008-06-14 9:22 ` Russell King - ARM Linux
2008-06-17 15:43 ` Paul Walmsley
2008-06-14 9:17 ` [PATCH 20/21] ARM: OMAP: Turn CM and PRM access into functions Russell King - ARM Linux
2008-06-14 9:09 ` [PATCH 19/21] ARM: OMAP: Introduce omap_globals and prcm access functions for multi-omap Russell King - ARM Linux
2008-06-17 7:46 ` Tony Lindgren
2008-06-22 14:08 ` Russell King - ARM Linux
2008-06-14 9:06 ` [PATCH 18/21] ARM: OMAP: Remove __REG access " Russell King - ARM Linux
2008-06-14 8:17 ` [PATCH 11/21] ARM: OMAP: McBSP: Prepare for splitting into omap1 and omap2 code Russell King - ARM Linux
2008-06-17 8:41 ` Tony Lindgren
2008-06-23 9:39 ` Tony Lindgren
2008-06-23 10:34 ` [PATCH 11/21] ARM: OMAP: McBSP: Prepare for splitting intoomap1 " shekhar, chandra
2008-06-14 8:19 ` [PATCH 10/21] ARM: OMAP: McBSP: Coding style cleanup on arch/arm/plat-omap/mcbsp.c Russell King - ARM Linux
2008-06-23 9:02 ` Tony Lindgren
2008-06-14 8:05 ` [PATCH 08/21] ARM: OMAP: SRAM: Move omap2 sram-fn.S to sram242x.S Russell King - ARM Linux
2008-06-17 7:36 ` Tony Lindgren
2008-06-22 14:06 ` Russell King - ARM Linux
2008-06-17 7:34 ` [PATCH 07/21] ARM: OMAP: SRAM: Move sram-fn.S from plat-omap to mach-omap1 Tony Lindgren
2008-06-22 14:06 ` Russell King - ARM Linux
2008-06-14 8:13 ` [PATCH 06/21] ARM: OMAP: DMA: Clean-up code Russell King - ARM Linux
2008-06-17 7:27 ` Tony Lindgren
2008-06-22 14:06 ` Russell King - ARM Linux
2008-06-14 8:04 ` [PATCH 05/21] ARM: OMAP: DMA: Remove __REG access Russell King - ARM Linux
2008-06-17 7:22 ` Tony Lindgren
2008-06-22 14:05 ` Russell King - ARM Linux
2008-06-14 8:03 ` [PATCH 04/21] ARM: OMAP: DMA: Make channels dynamic for multi-boot Russell King - ARM Linux
2008-06-14 8:01 ` [PATCH 03/21] ARM: OMAP: Add OMAP3430 base defines Russell King - ARM Linux
2008-06-17 7:19 ` Tony Lindgren
2008-06-14 8:20 ` Russell King - ARM Linux [this message]
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