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cpuidle: menu: Tweak threshold use in get_typical_interval()

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To prepare get_typical_interval() for subsequent changes, rearrange
the use of the data point threshold in it a bit and initialize that
threshold to UINT_MAX which is more consistent with its data type.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Christian Loehle <christian.loehle@arm.com>
Tested-by: Aboorva Devarajan <aboorvad@linux.ibm.com>
Link: https://patch.msgid.link/8490144.T7Z3S40VBb@rjwysocki.net
This commit is contained in:
Rafael J. Wysocki 2025-02-06 15:25:18 +01:00
parent 13982929fb
commit 60256e458e
1 changed files with 4 additions and 4 deletions
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8
drivers/cpuidle/governors/menu.c
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@ -116,7 +116,7 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev);
*/
static unsigned int get_typical_interval(struct menu_device *data)
{
unsigned int max, divisor, thresh = INT_MAX;
unsigned int max, divisor, thresh = UINT_MAX;
u64 avg, variance, avg_sq;
int i;
@ -129,8 +129,8 @@ static unsigned int get_typical_interval(struct menu_device *data)
for (i = 0; i < INTERVALS; i++) {
unsigned int value = data->intervals[i];
/* Discard data points above the threshold. */
if (value > thresh)
/* Discard data points above or at the threshold. */
if (value >= thresh)
continue;
divisor++;
@ -186,7 +186,7 @@ static unsigned int get_typical_interval(struct menu_device *data)
if ((divisor * 4) <= INTERVALS * 3)
return UINT_MAX;
thresh = max - 1;
thresh = max;
goto again;
}