log: Add a flag to enable log drivers
At present there is no way to disable a log driver. But the syslog driver
causes (attempted) network traffic in sandbox every time a log message
is printed, which is often.
Add a flag to enable a log driver. Adjust struct log_device to use a short
for next_filter_num so that no more memory is used for devices. Also fix
a missing line in the struct log_driver comment while here.
To maintain compatibility, enable it for all drivers for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/log.c b/common/log.c
index ac34f1c..d6dfabb 100644
--- a/common/log.c
+++ b/common/log.c
@@ -207,7 +207,8 @@
/* Emit message */
processing_msg = 1;
list_for_each_entry(ldev, &gd->log_head, sibling_node) {
- if (log_passes_filters(ldev, rec))
+ if ((ldev->flags & LOGDF_ENABLE) &&
+ log_passes_filters(ldev, rec))
ldev->drv->emit(ldev, rec);
}
processing_msg = 0;
@@ -329,6 +330,7 @@
}
INIT_LIST_HEAD(&ldev->filter_head);
ldev->drv = drv;
+ ldev->flags = drv->flags;
list_add_tail(&ldev->sibling_node,
(struct list_head *)&gd->log_head);
drv++;