git: c71a534e1cee - main - RELNOTES: Add an entry for boottrace(4)

The branch main has been updated by 0mp (doc, ports committer):

URL: https://cgit.FreeBSD.org/src/commit/?id=c71a534e1cee156349e3a8a4e8e984deac399363

commit c71a534e1cee156349e3a8a4e8e984deac399363
Author:     Mateusz Piotrowski <0mp@FreeBSD.org>
AuthorDate: 2022-03-29 11:33:13 +0000
Commit:     Mateusz Piotrowski <0mp@FreeBSD.org>
CommitDate: 2022-03-29 11:35:14 +0000

    RELNOTES: Add an entry for boottrace(4)
    
    Reviewed by:    mhorne
    Sponsored by:   NetApp, Inc.
    Sponsored by:   Klara Inc.
    Differential Revision: https://reviews.freebsd.org/D34432
---
 RELNOTES | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/RELNOTES b/RELNOTES
index ebe751531dd2..4b7b56f39f61 100644
--- a/RELNOTES
+++ b/RELNOTES
@@ -10,6 +10,24 @@ newline.  Entries should be separated by a newline.
 
 Changes to this file should not be MFCed.
 
+da5b7e90e740,5a8fceb3bd9f,7b0a665d72c0,13ec1e3155c7,318d0db5fe8a,1ae2c59bcf21:
+	Boottrace is a new kernel-userspace interface for capturing trace
+	events during system boot and shutdown. Event annotations are
+	present in:
+
+	- The boot and shutdown paths in the kernel
+	- Some key system utilities (init(8), shutdown(8), reboot(8))
+	- rc(8) scripts (via boottrace(8))
+
+        In contrast to other existing boot-time tracing facilities like TSLOG,
+        Boottrace focuses on the ease of use and is aimed primarily at system
+        administrators.
+
+        It is available in the default GENERIC kernel and can be enabled by
+        toggling a single sysctl(8) variable.
+
+	See boottrace(4) for more details.
+
 05a1d0f5d7ac:
 	Kernel TLS offload now supports receive-side offload of TLS 1.3.