sfc: add sysfs entry to control MCDI tracing
MCDI tracing is enabled per-function with a sysfs file
/sys/class/net/<NET_DEV>/device/mcdi_logging
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c
index 31eda325..dde7f90 100644
--- a/drivers/net/ethernet/sfc/mcdi.c
+++ b/drivers/net/ethernet/sfc/mcdi.c
@@ -188,7 +188,7 @@
}
#ifdef CONFIG_SFC_MCDI_LOGGING
- if (!WARN_ON_ONCE(!buf)) {
+ if (mcdi->logging_enabled && !WARN_ON_ONCE(!buf)) {
int bytes = 0;
int i;
/* Lengths should always be a whole number of dwords, so scream
@@ -274,7 +274,7 @@
}
#ifdef CONFIG_SFC_MCDI_LOGGING
- if (!WARN_ON_ONCE(!buf)) {
+ if (mcdi->logging_enabled && !WARN_ON_ONCE(!buf)) {
size_t hdr_len, data_len;
int bytes = 0;
int i;