linux-kernel - Re: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree

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Message-ID: <20080104021619.GA15409@linux-os.sc.intel.com>
Date:	Thu, 3 Jan 2008 18:16:19 -0800
From:	Venki Pallipadi <venkatesh.pallipadi@...el.com>
To:	Mark Lord <lkml@....ca>
Cc:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>, abelay@...ell.com,
	lenb@...nel.org, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	rjw@...k.pl
Subject: Re: + restore-missing-sysfs-max_cstate-attr.patch added to -mm tree


Reintroduce run time configurable max_cstate for !CPU_IDLE case.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@...el.com>

Index: linux-2.6.24-rc/drivers/acpi/processor_idle.c
===================================================================
--- linux-2.6.24-rc.orig/drivers/acpi/processor_idle.c
+++ linux-2.6.24-rc/drivers/acpi/processor_idle.c
@@ -76,7 +76,11 @@ static void (*pm_idle_save) (void) __rea
 #define PM_TIMER_TICKS_TO_US(p)		(((p) * 1000)/(PM_TIMER_FREQUENCY/1000))
 
 static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
+#ifdef CONFIG_CPU_IDLE
 module_param(max_cstate, uint, 0000);
+#else
+module_param(max_cstate, uint, 0644);
+#endif
 static unsigned int nocst __read_mostly;
 module_param(nocst, uint, 0000);
 
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