linux-kernel - [tip:timers/core] timer_list: Guard procfs specific code

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Message-ID: <tip-a9314773a91a1d3b36270085246a6715a326ff00@git.kernel.org>
Date:   Sun, 23 Jun 2019 03:22:24 -0700
From:   tip-bot for Nathan Huckleberry <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...nel.org,
        ndesaulniers@...gle.com, hpa@...or.com, nhuck@...gle.com
Subject: [tip:timers/core] timer_list: Guard procfs specific code

Commit-ID:  a9314773a91a1d3b36270085246a6715a326ff00
Gitweb:     https://git.kernel.org/tip/a9314773a91a1d3b36270085246a6715a326ff00
Author:     Nathan Huckleberry <nhuck@...gle.com>
AuthorDate: Fri, 14 Jun 2019 11:16:04 -0700
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Sun, 23 Jun 2019 00:08:52 +0200

timer_list: Guard procfs specific code

With CONFIG_PROC_FS=n the following warning is emitted:

kernel/time/timer_list.c:361:36: warning: unused variable
'timer_list_sops' [-Wunused-const-variable]
   static const struct seq_operations timer_list_sops = {

Add #ifdef guard around procfs specific code.

Signed-off-by: Nathan Huckleberry <nhuck@...gle.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: john.stultz@...aro.org
Cc: sboyd@...nel.org
Cc: clang-built-linux@...glegroups.com
Link: https://github.com/ClangBuiltLinux/linux/issues/534
Link: https://lkml.kernel.org/r/20190614181604.112297-1-nhuck@google.com

---
 kernel/time/timer_list.c | 36 +++++++++++++++++++-----------------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 98ba50dcb1b2..acb326f5f50a 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -282,23 +282,6 @@ static inline void timer_list_header(struct seq_file *m, u64 now)
 	SEQ_printf(m, "\n");
 }
 
-static int timer_list_show(struct seq_file *m, void *v)
-{
-	struct timer_list_iter *iter = v;
-
-	if (iter->cpu == -1 && !iter->second_pass)
-		timer_list_header(m, iter->now);
-	else if (!iter->second_pass)
-		print_cpu(m, iter->cpu, iter->now);
-#ifdef CONFIG_GENERIC_CLOCKEVENTS
-	else if (iter->cpu == -1 && iter->second_pass)
-		timer_list_show_tickdevices_header(m);
-	else
-		print_tickdevice(m, tick_get_device(iter->cpu), iter->cpu);
-#endif
-	return 0;
-}
-
 void sysrq_timer_list_show(void)
 {
 	u64 now = ktime_to_ns(ktime_get());
@@ -317,6 +300,24 @@ void sysrq_timer_list_show(void)
 	return;
 }
 
+#ifdef CONFIG_PROC_FS
+static int timer_list_show(struct seq_file *m, void *v)
+{
+	struct timer_list_iter *iter = v;
+
+	if (iter->cpu == -1 && !iter->second_pass)
+		timer_list_header(m, iter->now);
+	else if (!iter->second_pass)
+		print_cpu(m, iter->cpu, iter->now);
+#ifdef CONFIG_GENERIC_CLOCKEVENTS
+	else if (iter->cpu == -1 && iter->second_pass)
+		timer_list_show_tickdevices_header(m);
+	else
+		print_tickdevice(m, tick_get_device(iter->cpu), iter->cpu);
+#endif
+	return 0;
+}
+
 static void *move_iter(struct timer_list_iter *iter, loff_t offset)
 {
 	for (; offset; offset--) {
@@ -376,3 +377,4 @@ static int __init init_timer_list_procfs(void)
 	return 0;
 }
 __initcall(init_timer_list_procfs);
+#endif