From: Con Kolivas <kernel@kolivas.org>
To: linux-kernel@vger.kernel.org
Cc: akpm@osdl.org, linux@brodo.de
Subject: [PATCH] Add on-demand cpu-freq governor as default option
Date: Mon, 20 Sep 2004 13:12:30 +1000 [thread overview]
Message-ID: <cone.1095649950.909900.10443.502@pc.kolivas.org> (raw)
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This patch adds the option of using the on-demand cpu-frequency governor as
the default governor in Kconfig.
Signed-off-by: Con Kolivas <kernel@kolivas.org>
[-- Attachment #2: ondemand_governor_default.diff --]
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Index: linux-2.6.9-rc2-mm1/drivers/cpufreq/Kconfig
===================================================================
--- linux-2.6.9-rc2-mm1.orig/drivers/cpufreq/Kconfig 2004-09-19 19:49:57.716825544 +1000
+++ linux-2.6.9-rc2-mm1/drivers/cpufreq/Kconfig 2004-09-19 19:52:36.919623040 +1000
@@ -36,6 +36,17 @@ config CPU_FREQ_DEFAULT_GOV_USERSPACE
program shall be able to set the CPU dynamically without having
to enable the userspace governor manually.
+config CPU_FREQ_DEFAULT_GOV_ONDEMAND
+ bool "ondemand"
+ select CPU_FREQ_GOV_ONDEMAND
+ help
+ Use the CPUFreq governor 'ondemand' as default.
+ This governor does a periodic polling and
+ changes frequency based on the CPU utilization.
+ The support for this governor depends on CPU capability to
+ do fast frequency switching (i.e, very low latency frequency
+ transitions).
+
endchoice
config CPU_FREQ_GOV_PERFORMANCE
Index: linux-2.6.9-rc2-mm1/include/linux/cpufreq.h
===================================================================
--- linux-2.6.9-rc2-mm1.orig/include/linux/cpufreq.h 2004-09-19 19:49:57.765818096 +1000
+++ linux-2.6.9-rc2-mm1/include/linux/cpufreq.h 2004-09-19 19:52:36.919623040 +1000
@@ -323,6 +323,9 @@ extern struct cpufreq_governor cpufreq_g
#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE)
extern struct cpufreq_governor cpufreq_gov_userspace;
#define CPUFREQ_DEFAULT_GOVERNOR &cpufreq_gov_userspace
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND)
+extern struct cpufreq_governor cpufreq_gov_dbs;
+#define CPUFREQ_DEFAULT_GOVERNOR &cpufreq_gov_dbs
#endif
next reply other threads:[~2004-09-20 3:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-20 3:12 Con Kolivas [this message]
2004-09-20 17:02 ` Dominik Brodowski
2004-09-20 22:43 ` Con Kolivas
2004-09-21 16:16 ` Dominik Brodowski
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