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

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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: Rob Barnes <robbarnes@google.com>
Link: https://lore.kernel.org/r/20240507155809.525701-1-robbarnes@google.com
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
This commit is contained in:
Rob Barnes 2024-05-07 15:58:09 +00:00 committed by Tzung-Bi Shih
parent 47ef58cdbd
commit 7b44d5381e
1 changed files with 6 additions and 2 deletions
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8
drivers/platform/chrome/cros_ec_debugfs.c
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@ -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)