mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-09 02:00:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

firmware: arm_scmi: Add support to reset the debug metrics

Browse Source 
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: Luke Parkin <luke.parkin@arm.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Cristian Marussi <cristian.marussi@arm.com>
Message-Id: <20240805131013.587016-6-sudeep.holla@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Luke Parkin
2024-08-05 14:10:12 +01:00
committed by Sudeep Holla
parent f6a905eaf6
commit bd02b0737f
1 changed files with 21 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/firmware/arm_scmi/driver.c
View File

@@ -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)