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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/ABI/testing/dev-kmsg
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/Documentation/ABI/testing/dev-kmsg')
-rw-r--r--kernel/Documentation/ABI/testing/dev-kmsg9
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/Documentation/ABI/testing/dev-kmsg b/kernel/Documentation/ABI/testing/dev-kmsg
index bb820be48..fff817efa 100644
--- 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