2019-03-29 11:07:22

by Borislav Petkov

[permalink] [raw]
Subject: [PATCH] tick/broadcast: Fix warning about undefined tick_broadcast_oneshot_offline()

From: Borislav Petkov <[email protected]>

Randconfig builds with

CONFIG_TICK_ONESHOT=y
CONFIG_HOTPLUG_CPU=n

trigger

kernel/time/tick-broadcast.c:39:13: warning: ‘tick_broadcast_oneshot_offline’ \
declared ‘static’ but never defined [-Wunused-function]

due to that function's definition missing.

Move the CONFIG_HOTPLUG_CPU ifdeffery around its declaration too.

Fixes: 1b72d4323798 ("tick: Remove outgoing CPU from broadcast masks")
Signed-off-by: Borislav Petkov <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: [email protected]
---
kernel/time/tick-broadcast.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 0283523de045..7541cbca695e 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -36,12 +36,16 @@ static __cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(tick_broadcast_lock);
static void tick_broadcast_setup_oneshot(struct clock_event_device *bc);
static void tick_broadcast_clear_oneshot(int cpu);
static void tick_resume_broadcast_oneshot(struct clock_event_device *bc);
+# ifdef CONFIG_HOTPLUG_CPU
static void tick_broadcast_oneshot_offline(unsigned int cpu);
+# endif
#else
static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) { BUG(); }
static inline void tick_broadcast_clear_oneshot(int cpu) { }
static inline void tick_resume_broadcast_oneshot(struct clock_event_device *bc) { }
+# ifdef CONFIG_HOTPLUG_CPU
static inline void tick_broadcast_oneshot_offline(unsigned int cpu) { }
+# endif
#endif

/*
--
2.21.0



2019-03-29 12:46:08

by Mukesh Ojha

[permalink] [raw]
Subject: Re: [PATCH] tick/broadcast: Fix warning about undefined tick_broadcast_oneshot_offline()


On 3/29/2019 4:35 PM, Borislav Petkov wrote:
> From: Borislav Petkov <[email protected]>
>
> Randconfig builds with
>
> CONFIG_TICK_ONESHOT=y
> CONFIG_HOTPLUG_CPU=n
>
> trigger
>
> kernel/time/tick-broadcast.c:39:13: warning: ‘tick_broadcast_oneshot_offline’ \
> declared ‘static’ but never defined [-Wunused-function]
>
> due to that function's definition missing.
>
> Move the CONFIG_HOTPLUG_CPU ifdeffery around its declaration too.
>
> Fixes: 1b72d4323798 ("tick: Remove outgoing CPU from broadcast masks")
> Signed-off-by: Borislav Petkov <[email protected]>
> Acked-by: Thomas Gleixner <[email protected]>
> Cc: Valentin Schneider <[email protected]>
> Cc: Frederic Weisbecker <[email protected]>
> Cc: [email protected]


Reviewed-by: Mukesh Ojha <[email protected]>

Cheers,
-Mukesh

> ---
> kernel/time/tick-broadcast.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
> index 0283523de045..7541cbca695e 100644
> --- a/kernel/time/tick-broadcast.c
> +++ b/kernel/time/tick-broadcast.c
> @@ -36,12 +36,16 @@ static __cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(tick_broadcast_lock);
> static void tick_broadcast_setup_oneshot(struct clock_event_device *bc);
> static void tick_broadcast_clear_oneshot(int cpu);
> static void tick_resume_broadcast_oneshot(struct clock_event_device *bc);
> +# ifdef CONFIG_HOTPLUG_CPU
> static void tick_broadcast_oneshot_offline(unsigned int cpu);
> +# endif
> #else
> static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) { BUG(); }
> static inline void tick_broadcast_clear_oneshot(int cpu) { }
> static inline void tick_resume_broadcast_oneshot(struct clock_event_device *bc) { }
> +# ifdef CONFIG_HOTPLUG_CPU
> static inline void tick_broadcast_oneshot_offline(unsigned int cpu) { }
> +# endif
> #endif
>
> /*

Subject: [tip:timers/core] tick/broadcast: Fix warning about undefined tick_broadcast_oneshot_offline()

Commit-ID: aba0954327c831f593702e3a81ef3ad4bec7a838
Gitweb: https://git.kernel.org/tip/aba0954327c831f593702e3a81ef3ad4bec7a838
Author: Borislav Petkov <[email protected]>
AuthorDate: Fri, 29 Mar 2019 11:28:52 +0100
Committer: Borislav Petkov <[email protected]>
CommitDate: Fri, 29 Mar 2019 14:13:44 +0100

tick/broadcast: Fix warning about undefined tick_broadcast_oneshot_offline()

Randconfig builds with

CONFIG_TICK_ONESHOT=y
CONFIG_HOTPLUG_CPU=n

trigger

kernel/time/tick-broadcast.c:39:13: warning: ‘tick_broadcast_oneshot_offline’ \
declared ‘static’ but never defined [-Wunused-function]

due to that function's definition missing.

Move the CONFIG_HOTPLUG_CPU ifdeffery around its declaration too.

Fixes: 1b72d4323798 ("tick: Remove outgoing CPU from broadcast masks")
Signed-off-by: Borislav Petkov <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Reviewed-by: Mukesh Ojha <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
---
kernel/time/tick-broadcast.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 0283523de045..7541cbca695e 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -36,12 +36,16 @@ static __cacheline_aligned_in_smp DEFINE_RAW_SPINLOCK(tick_broadcast_lock);
static void tick_broadcast_setup_oneshot(struct clock_event_device *bc);
static void tick_broadcast_clear_oneshot(int cpu);
static void tick_resume_broadcast_oneshot(struct clock_event_device *bc);
+# ifdef CONFIG_HOTPLUG_CPU
static void tick_broadcast_oneshot_offline(unsigned int cpu);
+# endif
#else
static inline void tick_broadcast_setup_oneshot(struct clock_event_device *bc) { BUG(); }
static inline void tick_broadcast_clear_oneshot(int cpu) { }
static inline void tick_resume_broadcast_oneshot(struct clock_event_device *bc) { }
+# ifdef CONFIG_HOTPLUG_CPU
static inline void tick_broadcast_oneshot_offline(unsigned int cpu) { }
+# endif
#endif

/*