[PATCH v26 15/15] doc: add release note about log library

[Stephen Hemminger]

Significant enough to add some documentation.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
Acked-by: Morten Brørup <mb at smartsharesystems.com>
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
Acked-by: Chengwen Feng <fengchengwen at huawei.com>
---
 doc/guides/rel_notes/release_24_11.rst | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/doc/guides/rel_notes/release_24_11.rst b/doc/guides/rel_notes/release_24_11.rst
index acc512c70a..5c8a0af1d0 100644
--- a/doc/guides/rel_notes/release_24_11.rst
+++ b/doc/guides/rel_notes/release_24_11.rst
@@ -276,6 +276,32 @@ API Changes
   and replaced it with a new shared devarg ``llq_policy`` that keeps the same logic.
 
 
+* **Logging library changes**
+
+  * The log is initialized earlier in startup so all messages go through
+    the library.
+
+  * Added a new option to timestamp log messages, which is useful for
+    debugging delays in application and driver startup.
+
+  * Syslog related changes
+
+    * The meaning of the *--syslog* option has changed.
+      Use of syslog is controlled by the *--syslog* option.
+      The default is now *auto* which uses syslog only if stderr
+      is not a terminal device.
+
+    * The syslog facility is now set to **LOG_USER** if stderr is a terminal
+      and **LOG_DAEMON** otherwise.
+
+    * Syslog is now supported on FreeBSD (but not on Windows).
+
+  * If the application is a systemd service and the log output is being
+    sent of standard error then DPDK will switch to journal native protocol.
+
+  * Log messages can be optionally marked with colors.
+
+
 ABI Changes
 -----------
 
-- 
2.45.2