A target that sets ratelimit_interval_ms runs with the ratelimit default of 10 messages per interval, which is either too coarse or too generous depending on how chatty the target is.
Expose it as ratelimit_burst through configfs. Signed-off-by: Breno Leitao <[email protected]> --- drivers/net/netconsole.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 6f94495d0abc3..6d60a5188bf13 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -948,6 +948,13 @@ static ssize_t ratelimit_interval_ms_show(struct config_item *item, char *buf) jiffies_to_msecs(READ_ONCE(nt->ratelimit.interval))); } +static ssize_t ratelimit_burst_show(struct config_item *item, char *buf) +{ + struct netconsole_target *nt = to_target(item); + + return sysfs_emit(buf, "%d\n", READ_ONCE(nt->ratelimit.burst)); +} + /* configfs helper to display if cpu_nr sysdata feature is enabled */ static ssize_t sysdata_cpu_nr_enabled_show(struct config_item *item, char *buf) { @@ -1366,6 +1373,27 @@ static ssize_t ratelimit_interval_ms_store(struct config_item *item, return count; } +static ssize_t ratelimit_burst_store(struct config_item *item, const char *buf, + size_t count) +{ + struct netconsole_target *nt = to_target(item); + unsigned int burst; + ssize_t ret; + + ret = kstrtouint(buf, 10, &burst); + if (ret) + return ret; + + if (burst > INT_MAX) + return -ERANGE; + + dynamic_netconsole_mutex_lock(); + WRITE_ONCE(nt->ratelimit.burst, burst); + dynamic_netconsole_mutex_unlock(); + + return count; +} + struct userdatum { struct config_item item; char value[MAX_EXTRADATA_VALUE_LEN]; @@ -1731,6 +1759,7 @@ CONFIGFS_ATTR(, remote_mac); CONFIGFS_ATTR(, release); CONFIGFS_ATTR_RO(, transmit_errors); CONFIGFS_ATTR(, ratelimit_interval_ms); +CONFIGFS_ATTR(, ratelimit_burst); static struct configfs_attribute *netconsole_target_attrs[] = { &attr_enabled, @@ -1745,6 +1774,7 @@ static struct configfs_attribute *netconsole_target_attrs[] = { &attr_remote_mac, &attr_transmit_errors, &attr_ratelimit_interval_ms, + &attr_ratelimit_burst, NULL, }; -- 2.53.0-Meta
