Commit 7b44d538 authored by Rob Barnes's avatar Rob Barnes Committed by Tzung-Bi Shih
Browse files

platform/chrome: cros_ec_debugfs: Make log polling period a parameter 



Make EC log polling period a module parameter. This allows the polling
period to be set via the kernel command line. Keeping the default at
the current 10 second period. The optimal polling period will differ by
board.

Signed-off-by: default avatarRob Barnes <robbarnes@google.com>
Link: https://lore.kernel.org/r/20240507155809.525701-1-robbarnes@google.com


Signed-off-by: default avatarTzung-Bi Shih <tzungbi@kernel.org>
parent 47ef58cd

drivers/platform/chrome/cros_ec_debugfs.c

+6 −2
Original line number Diff line number Diff line
@@ -26,6 +26,10 @@ 


#define CIRC_ADD(idx, size, value)	(((idx) + (value)) & ((size) - 1))



static unsigned int log_poll_period_ms = LOG_POLL_SEC * MSEC_PER_SEC;

module_param(log_poll_period_ms, uint, 0644);

MODULE_PARM_DESC(log_poll_period_ms, "EC log polling period(ms)");



/* waitqueue for log readers */

static DECLARE_WAIT_QUEUE_HEAD(cros_ec_debugfs_log_wq);
@@ -57,7 +61,7 @@ struct cros_ec_debugfs { 


/*

 * We need to make sure that the EC log buffer on the UART is large enough,

 * so that it is unlikely enough to overlow within LOG_POLL_SEC.

 * so that it is unlikely enough to overlow within log_poll_period_ms.

 */

static void cros_ec_console_log_work(struct work_struct *__work)

{
@@ -119,7 +123,7 @@ static void cros_ec_console_log_work(struct work_struct *__work) 


resched:

	schedule_delayed_work(&debug_info->log_poll_work,

			      msecs_to_jiffies(LOG_POLL_SEC * 1000));

			      msecs_to_jiffies(log_poll_period_ms));

}



static int cros_ec_console_log_open(struct inode *inode, struct file *file)