On Tuesday 03 February 2009 00:04:15 Andrew Morton wrote: > On Tue, 27 Jan 2009 14:03:47 -0600 > > Mark Langsdorf <mark.langsdorf@xxxxxxx> wrote: > > Subject: [PATCH] Determine latency from ACPI > > Nobody who reads this title will have a clue which subsystem the patch > affects. Please always create patch titles of the form: > > subsystem-identifer: what-i-changed > > > At this time, the PowerNow! driver for K8 uses an experimentally > > derived formula to calculate transition latency. The value it > > provides is orders of magnitude too large on modern systems. > > This patch replaces the formula with ACPI _PSS latency values > > for more accuracy and better performance. > > > > I've tested it on two 2nd generation Opteron systems, a 3rd > > generation Operton system, and a Turion X2 without seeing any > > stability problems. > > There are a tremendous number of changes to this file in linux-next. > It's easy to make the patch apply, but my confidence that the result > will actually work is insufficiently high. I sent a patch set, this one included to Dave some days ago. These were based on his latest cpufreq tree and should have latest changes adjusted. Unfortunately without getting a response yet (I messed up the cpufreq mail list address and bombed him down sending the series three times with guilt --patchbomb, so this could have ended in the trash folder :( ). Shall I resend :) ? Thanks, Thomas > Also, I notice that linux-next's > > commit 8ad2aedc2129f4e791dc7e2e89eabdcb2145d16c > Author: Dave Jones <davej@xxxxxxxxxx> > AuthorDate: Sun Jan 18 01:22:33 2009 -0500 > Commit: Dave Jones <davej@xxxxxxxxxx> > CommitDate: Fri Jan 23 09:27:06 2009 -0500 > > [CPUFREQ] checkpatch cleanups for powernow-k8 > > > broke the layout of powernow_k8_acpi_pst_values() most unpleasantly > (the closing brace). > > -- > To unsubscribe from this list: send the line "unsubscribe cpufreq" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
