[PATCH v5 07/18] watchdog/perf: Rename watchdog_hld.c to watchdog_perf.c

Douglas Anderson dianders at chromium.org
Sat May 20 03:18:31 AEST 2023

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.

Acked-by: Nicholas Piggin <npiggin at gmail.com>
Reviewed-by: Petr Mladek <pmladek at suse.com>
Signed-off-by: Douglas Anderson <dianders at chromium.org>

(no changes since v4)

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 b69c95315480..7eb72033143c 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 2125b09e09d7..8b8015758ea5 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.

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