gdb: rename lin-lwp to linux-nat in set/show debug

Rename 'set debug lin-lwp' to 'set debug linux-nat' and 'show debug
lin-lwp' to 'show debug linux-nat'.

I've updated the documentation and help text to match, as well as
making it clear that the debug that is coming out relates to all
aspects of Linux native inferior support, not just the LWP aspect of
it.

The boundary between general "native" target debug, and the lwp
specific part of that debug was always a little blurry, but the actual
debug variable inside GDB is debug_linux_nat, and the print routine
linux_nat_debug_printf, is used throughout the linux-nat.c file, not
just for lwp related debug, so the new name seems to make more sense.

4 files changed, 22 insertions, 10 deletions

diff --git a/gdb/NEWS b/gdb/NEWS
index c26e15b530..ad80e92700 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -64,6 +64,12 @@ set debug threads on|off
 show debug threads
   Print additional debug messages about thread creation and deletion.
 
+set debug linux-nat on|off
+show debug linux-nat
+  These new commands replaced the old 'set debug lin-lwp' and 'show
+  debug lin-lwp' respectively.  Turning this setting on prints debug
+  messages relating to GDB's handling of native Linux inferiors.
+
 * Changed commands
 
 maint packet
@@ -79,6 +85,12 @@ clone-inferior
   environment' or 'unset environment' commands are also copied to the new
   inferior.
 
+set debug lin-lwp on|off
+show debug lin-lwp
+  These commands have been removed from GDB.  The new command 'set
+  debug linux-nat' and 'show debug linux-nat' should be used
+  instead.
+
 * Python API
 
   ** New function gdb.add_history(), which takes a gdb.Value object
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 48873aa34f..e39815d513 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -27028,12 +27028,12 @@ Turn on or off debugging messages from JIT debug support.
 @item show debug jit
 Displays the current state of @value{GDBN} JIT debugging.
 
-@item set debug lin-lwp
-@cindex @sc{gnu}/Linux LWP debug messages
-@cindex Linux lightweight processes
-Turn on or off debugging messages from the Linux LWP debug support.
-@item show debug lin-lwp
-Show the current state of Linux LWP debugging messages.
+@item set debug linux-nat @r{[}on@r{|}off@r{]}
+@cindex @sc{gnu}/Linux native target debug messages
+@cindex Linux native targets
+Turn on or off debugging messages from the Linux native target debug support.
+@item show debug linux-nat
+Show the current state of Linux native target debugging messages.
 
 @item set debug linux-namespaces
 @cindex @sc{gnu}/Linux namespaces debug messages
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 2271cbf153..b926fb5eba 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -195,13 +195,13 @@ enum tribool have_ptrace_getregset = TRIBOOL_UNKNOWN;
 
 static bool debug_linux_nat;
 
-/* Implement 'show debug lin-lwp'.  */
+/* Implement 'show debug linux-nat'.  */
 
 static void
 show_debug_linux_nat (struct ui_file *file, int from_tty,
 		      struct cmd_list_element *c, const char *value)
 {
-  fprintf_filtered (file, _("Debugging of GNU/Linux lwp module is %s.\n"),
+  fprintf_filtered (file, _("Debugging of GNU/Linux native targets is %s.\n"),
 		    value);
 }
 
@@ -4529,7 +4529,7 @@ void _initialize_linux_nat ();
 void
 _initialize_linux_nat ()
 {
-  add_setshow_boolean_cmd ("lin-lwp", class_maintenance,
+  add_setshow_boolean_cmd ("linux-nat", class_maintenance,
 			   &debug_linux_nat, _("\
 Set debugging of GNU/Linux native target."), _("	\
 Show debugging of GNU/Linux native target."), _("	\
diff --git a/gdb/testsuite/gdb.threads/ia64-sigill.exp b/gdb/testsuite/gdb.threads/ia64-sigill.exp
index 89b684064d..e92b4877b2 100644
--- a/gdb/testsuite/gdb.threads/ia64-sigill.exp
+++ b/gdb/testsuite/gdb.threads/ia64-sigill.exp
@@ -55,7 +55,7 @@ gdb_breakpoint [gdb_get_line_number "break-at-exit"]
 
 gdb_test_no_output "set debug infrun 1"
 
-# The ia64 SIGILL signal is visible only in the lin-lwp debug.
+# The ia64 SIGILL signal is visible only in the linux-nat debug output.
 
 set prompt "$gdb_prompt \\\[infrun\\\] fetch_inferior_event: exit\r\n$"
 gdb_test_multiple "continue" "continue" -prompt $prompt {