[PATCH v4 06/17] watchdog/perf: Rename watchdog_hld.c to watchdog_perf.c

[Douglas Anderson <dianders@chromium.org>]

The code currently in "watchdog_hld.c" is for detecting hardlockups
using perf, as evidenced by the line in the Makefile that only
compiles this file if CONFIG_HARDLOCKUP_DETECTOR_PERF is
defined. Rename the file to prepare for the buddy hardlockup detector,
which doesn't use perf.

It could be argued that the new name makes it less obvious that this
is a hardlockup detector. While true, it's not hard to remember that
the "perf" detector is always a hardlockup detector and it's nice not
to have names that are too convoluted.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

Changes in v4:
- ("Rename watchdog_hld.c to watchdog_perf.c") new for v4.

 kernel/Makefile                            | 2 +-
 kernel/{watchdog_hld.c => watchdog_perf.c} | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 rename kernel/{watchdog_hld.c => watchdog_perf.c} (99%)

diff --git a/kernel/Makefile b/kernel/Makefile
index 10ef068f598d..406ccccc4dd3 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -91,7 +91,7 @@ obj-$(CONFIG_FAIL_FUNCTION) += fail_function.o
 obj-$(CONFIG_KGDB) += debug/
 obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
 obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
-obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_hld.o
+obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_perf.o
 obj-$(CONFIG_SECCOMP) += seccomp.o
 obj-$(CONFIG_RELAY) += relay.o
 obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
diff --git a/kernel/watchdog_hld.c b/kernel/watchdog_perf.c
similarity index 99%
rename from kernel/watchdog_hld.c
rename to kernel/watchdog_perf.c
index 96b717205952..c3d8ceb149da 100644
--- a/kernel/watchdog_hld.c
+++ b/kernel/watchdog_perf.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Detect hard lockups on a system
+ * Detect hard lockups on a system using perf
  *
  * started by Don Zickus, Copyright (C) 2010 Red Hat, Inc.
  *
-- 
2.40.1.521.gf1e218fcd8-goog