Hello all,
- make pm_idle_save, nocst and bm_history __read_mostly
- static first_run is initialized to 0 by default already
- don't remove static init value of nocst and bm_history
since __read_mostly may be special
(see e.g. http://www.ussg.iu.edu/hypermail/linux/kernel/0010.0/0771.html)
Patch tested on 2.6.17-rc1-mm2, rediffed against 2.6.17-rc1-mm3.
Signed-off-by: Andreas Mohr <[email protected]>
diff -urN linux-2.6.17-rc1-mm3.orig/drivers/acpi/processor_idle.c linux-2.6.17-rc1-mm3/drivers/acpi/processor_idle.c
--- linux-2.6.17-rc1-mm3.orig/drivers/acpi/processor_idle.c 2006-04-18 20:06:57.000000000 +0200
+++ linux-2.6.17-rc1-mm3/drivers/acpi/processor_idle.c 2006-04-18 20:11:16.000000000 +0200
@@ -54,10 +54,10 @@
#define US_TO_PM_TIMER_TICKS(t) ((t * (PM_TIMER_FREQUENCY/1000)) / 1000)
#define C2_OVERHEAD 4 /* 1us (3.579 ticks per us) */
#define C3_OVERHEAD 4 /* 1us (3.579 ticks per us) */
-static void (*pm_idle_save) (void);
+static void (*pm_idle_save) (void) __read_mostly;
module_param(max_cstate, uint, 0644);
-static unsigned int nocst = 0;
+static unsigned int nocst __read_mostly = 0;
module_param(nocst, uint, 0000);
/*
@@ -67,7 +67,7 @@
* 100 HZ: 0x0000000F: 4 jiffies = 40ms
* reduce history for more aggressive entry into C3
*/
-static unsigned int bm_history =
+static unsigned int bm_history __read_mostly =
(HZ >= 800 ? 0xFFFFFFFF : ((1U << (HZ / 25)) - 1));
module_param(bm_history, uint, 0644);
/* --------------------------------------------------------------------------
@@ -1088,7 +1088,7 @@
struct acpi_device *device)
{
acpi_status status = 0;
- static int first_run = 0;
+ static int first_run; /* static: = 0 */
struct proc_dir_entry *entry = NULL;
unsigned int i;
-
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