Commit bd02b073 authored by Luke Parkin's avatar Luke Parkin Committed by Sudeep Holla
Browse files

firmware: arm_scmi: Add support to reset the debug metrics 



It is sometimes useful to reset all these SCMI communication debug
metrics especially when we are interested in analysing these metrics
during a particular workload or for a fixed time duration. Let us
add the capability to reset all these metrics as once so that they
can be counted during the period of interest.

Signed-off-by: default avatarLuke Parkin <luke.parkin@arm.com>
Reviewed-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Tested-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-6-sudeep.holla@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent f6a905ea

drivers/firmware/arm_scmi/driver.c

+21 −1
Original line number Diff line number Diff line
@@ -2864,6 +2864,24 @@ static const char * const dbg_counter_strs[] = { 
	"err_protocol",

};



static ssize_t reset_all_on_write(struct file *filp, const char __user *buf,

				  size_t count, loff_t *ppos)

{

	struct scmi_debug_info *dbg = filp->private_data;



	for (int i = 0; i < SCMI_DEBUG_COUNTERS_LAST; i++)

		atomic_set(&dbg->counters[i], 0);



	return count;

}



static const struct file_operations fops_reset_counts = {

	.owner = THIS_MODULE,

	.open = simple_open,

	.llseek = no_llseek,

	.write = reset_all_on_write,

};



static void scmi_debugfs_counters_setup(struct scmi_debug_info *dbg,

					struct dentry *trans)

{
@@ -2873,8 +2891,10 @@ static void scmi_debugfs_counters_setup(struct scmi_debug_info *dbg, 
	counters = debugfs_create_dir("counters", trans);



	for (idx = 0; idx < SCMI_DEBUG_COUNTERS_LAST; idx++)

		debugfs_create_atomic_t(dbg_counter_strs[idx], 0400, counters,

		debugfs_create_atomic_t(dbg_counter_strs[idx], 0600, counters,

					&dbg->counters[idx]);



	debugfs_create_file("reset", 0200, counters, dbg, &fops_reset_counts);

}



static void scmi_debugfs_common_cleanup(void *d)