These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / ABI / testing / dev-kmsg

diff --git a/kernel/Documentation/ABI/testing/dev-kmsg b/kernel/Documentation/ABI/testing/dev-kmsg
index bb820be..fff817e 100644 (file)
--- a/kernel/Documentation/ABI/testing/dev-kmsg
+++ b/kernel/Documentation/ABI/testing/dev-kmsg
@@ -98,4 +98,13 @@ Description: The /dev/kmsg character device node provides userspace access
                logic is used internally when messages are printed to the
                console, /proc/kmsg or the syslog() syscall.
 
+               By default, kernel tries to avoid fragments by concatenating
+               when it can and fragments are rare; however, when extended
+               console support is enabled, the in-kernel concatenation is
+               disabled and /dev/kmsg output will contain more fragments. If
+               the log consumer performs concatenation, the end result
+               should be the same. In the future, the in-kernel concatenation
+               may be removed entirely and /dev/kmsg users are recommended to
+               implement fragment handling.
+
 Users:         dmesg(1), userspace kernel log consumers