[DTrace-devel] [PATCH 3/3] NEWS: mention the dtprobed daemon

Nick Alcock nick.alcock at oracle.com
Tue Nov 1 21:30:11 UTC 2022


Signed-off-by: Nick Alcock <nick.alcock at oracle.com>
---
 NEWS | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/NEWS b/NEWS
index 62040510805c..de51d180f8a0 100644
--- a/NEWS
+++ b/NEWS
@@ -33,6 +33,16 @@ New features:
    explicitly (by pid) in the probe script.  Argument mapping and wildcard
    probe specifications are not supported yet.
 
+Upgrading:
+
+ - The USDT implementation depends on an always-running daemon (dtprobed):
+   the corresponding systemd dtprobed.service is be automatically started in
+   relatively early boot in non-rescue scenarios, but when DTrace is first
+   installed, or if it is upgraded from a version before the daemon existed
+   (before 2.0.0-1.11), any probes in programs that were already running
+   before that point will not appear in DTrace's list of available probes
+   until such programs are restarted.
+
 Bugfixes:
 
  - Arguments of sdt-provider probes are now correctly populated using the
-- 
2.38.0.266.g481848f278




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