From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Date: Mon, 26 Nov 2012 09:00:48 +0000 Subject: [U-Boot] [PATCH 3/8] boottime: Add core boottime measurement support In-Reply-To: References: <1353422034-28107-1-git-send-email-lee.jones@linaro.org> <1353422034-28107-4-git-send-email-lee.jones@linaro.org> Message-ID: <20121126090048.GA12782@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Simon, > On Tue, Nov 20, 2012 at 6:33 AM, Lee Jones wrote: > > Boottime is a tool which can be used for full system booting time > > measurement. Bootloader boot time is passed to the kernel component > > though ATAGS. The kernel-side driver then uses this information to > > provide full system boot time diagnostics though debugfs. > > > > Based heavily on the original driver by Jonas Aaberg. > > > > Signed-off-by: Lee Jones > > Did you take a look at bootstage, which seems at least on the surface > to provide a similar mechanism? This passes the information to the > kernel through a device tree, or worse case a 'stash area'. I didn't see this before. I don't see the kernel counterpart, did it make it upstream? Wolfgang, didn't you know about bootstage? This could have saved us a great deal of time. Kind regards, Lee -- Lee Jones Linaro ST-Ericsson Landing Team Lead Linaro.org ? Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog