doc: Correct context description for some JIT support GUCs

The documentation for jit_debugging_support and jit_profiling_support
previously stated that these parameters can only be set at server start.

However, both parameters use the PGC_SU_BACKEND context, meaning they
can be set at session start by superusers or users granted the appropriate
SET privilege, but cannot be changed within an active session.

This commit updates the documentation to reflect the actual behavior.

Backpatch to all supported versions.

Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CAHGQGwEpMDpB-K8SSUVRRHg6L6z3pLAkekd9aviOS=ns0EC=+Q@mail.gmail.com
Backpatch-through: 14

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 67da9a1de66b5d603df05a9b00df79e411d9a95c..893e2742e6182ae780301b6d93ae0d46e48c825f 100644 (file)
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -13263,7 +13263,9 @@ LOG:  CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1)
         If LLVM has the required functionality, register generated functions
         with <productname>GDB</productname>.  This makes debugging easier.
         The default setting is <literal>off</literal>.
-        This parameter can only be set at server start.
+        Only superusers and users with the appropriate <literal>SET</literal>
+        privilege can change this parameter at session start,
+        and it cannot be changed at all within a session.
        </para>
       </listitem>
      </varlistentry>
@@ -13314,7 +13316,9 @@ LOG:  CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1)
         This writes out files to <filename>~/.debug/jit/</filename>; the
         user is responsible for performing cleanup when desired.
         The default setting is <literal>off</literal>.
-        This parameter can only be set at server start.
+        Only superusers and users with the appropriate <literal>SET</literal>
+        privilege can change this parameter at session start,
+        and it cannot be changed at all within a session.
        </para>
       </listitem>
      </varlistentry>