[PATCH] locking/lockdep: remove print_lock_trace function

[PATCH] locking/lockdep: remove print_lock_trace function

[Anders Roxell]

gcc warns that function print_lock_trace() is unused if
CONFIG_PROVE_LOCKING isn't set.

../kernel/locking/lockdep.c:2820:13: warning: ‘print_lock_trace’ defined
   but not used [-Wunused-function]
 static void print_lock_trace(struct lock_trace *trace, unsigned int
   spaces)

Rework so we remove the function if CONFIG_PROVE_LOCKING isn't set.

Fixes: c120bce78065 ("lockdep: Simplify stack trace handling")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
 kernel/locking/lockdep.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index d06190fa5082..df1bd3ba56bc 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2816,10 +2816,6 @@ static inline int validate_chain(struct task_struct *curr,
 {
 	return 1;
 }
-
-static void print_lock_trace(struct lock_trace *trace, unsigned int spaces)
-{
-}
 #endif
 
 /*
-- 
2.20.1

[tip:locking/core] locking/lockdep: Remove the unused print_lock_trace() function

[tip-bot for Anders Roxell]

Commit-ID:  c0090c4c85c27d1fa3d785c935501b7207cd2869
Gitweb:     https://git.kernel.org/tip/c0090c4c85c27d1fa3d785c935501b7207cd2869
Author:     Anders Roxell <anders.roxell@linaro.org>
AuthorDate: Thu, 16 May 2019 21:13:26 +0200
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 24 May 2019 09:05:46 +0200

locking/lockdep: Remove the unused print_lock_trace() function

gcc warns that function print_lock_trace() is unused if
CONFIG_PROVE_LOCKING isn't set:

../kernel/locking/lockdep.c:2820:13: warning: ‘print_lock_trace’ defined but not used [-Wunused-function]

Rework so we remove the function if CONFIG_PROVE_LOCKING isn't set.

Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: will.deacon@arm.com
Fixes: c120bce78065 ("lockdep: Simplify stack trace handling")
Link: http://lkml.kernel.org/r/20190516191326.27003-1-anders.roxell@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 kernel/locking/lockdep.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 6b283b4f87aa..8d32ae7768a7 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -2818,10 +2818,6 @@ static inline int validate_chain(struct task_struct *curr,
 {
 	return 1;
 }
-
-static void print_lock_trace(struct lock_trace *trace, unsigned int spaces)
-{
-}
 #endif
 
 /*

Re: [PATCH] locking/lockdep: remove print_lock_trace function

[Will Deacon]

On Thu, May 16, 2019 at 09:13:26PM +0200, Anders Roxell wrote:
> gcc warns that function print_lock_trace() is unused if
> CONFIG_PROVE_LOCKING isn't set.
> 
> ../kernel/locking/lockdep.c:2820:13: warning: ‘print_lock_trace’ defined
>    but not used [-Wunused-function]
>  static void print_lock_trace(struct lock_trace *trace, unsigned int
>    spaces)
> 
> Rework so we remove the function if CONFIG_PROVE_LOCKING isn't set.
> 
> Fixes: c120bce78065 ("lockdep: Simplify stack trace handling")
> Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
> ---
>  kernel/locking/lockdep.c | 4 ----
>  1 file changed, 4 deletions(-)

Acked-by: Will Deacon <will.deacon@arm.com>

Will