[tip:core/stacktrace] stacktrace: Remove obsolete functions

[tip-bot for Thomas Gleixner]

Commit-ID:  988ec8841ca1e22b2978fce0134d8267e838770e
Gitweb:     https://git.kernel.org/tip/988ec8841ca1e22b2978fce0134d8267e838770e
Author:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Thu, 25 Apr 2019 11:45:19 +0200
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 29 Apr 2019 12:37:57 +0200

stacktrace: Remove obsolete functions

No more users of the struct stack_trace based interfaces. Remove them.

Remove the macro stubs for !CONFIG_STACKTRACE as well as they are pointless
because the storage on the call sites is conditional on CONFIG_STACKTRACE
already. No point to be 'smart'.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: kasan-dev@xxxxxxxxxxxxxxxx
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
Cc: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: Robin Murphy <robin.murphy@xxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Johannes Thumshirn <jthumshirn@xxxxxxx>
Cc: David Sterba <dsterba@xxxxxxxx>
Cc: Chris Mason <clm@xxxxxx>
Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
Cc: linux-btrfs@xxxxxxxxxxxxxxx
Cc: dm-devel@xxxxxxxxxx
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>
Cc: Miroslav Benes <mbenes@xxxxxxx>
Cc: linux-arch@xxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20190425094803.524796783@xxxxxxxxxxxxx

---
 include/linux/stacktrace.h | 17 -----------------
 kernel/stacktrace.c        | 14 --------------
 2 files changed, 31 deletions(-)

diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index a24340b3e9e1..40decfbb9a24 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -36,24 +36,7 @@ extern void save_stack_trace_tsk(struct task_struct *tsk,
 				struct stack_trace *trace);
 extern int save_stack_trace_tsk_reliable(struct task_struct *tsk,
 					 struct stack_trace *trace);
-
-extern void print_stack_trace(struct stack_trace *trace, int spaces);
-extern int snprint_stack_trace(char *buf, size_t size,
-			struct stack_trace *trace, int spaces);
-
-#ifdef CONFIG_USER_STACKTRACE_SUPPORT
 extern void save_stack_trace_user(struct stack_trace *trace);
-#else
-# define save_stack_trace_user(trace)              do { } while (0)
-#endif
-
-#else /* !CONFIG_STACKTRACE */
-# define save_stack_trace(trace)			do { } while (0)
-# define save_stack_trace_tsk(tsk, trace)		do { } while (0)
-# define save_stack_trace_user(trace)			do { } while (0)
-# define print_stack_trace(trace, spaces)		do { } while (0)
-# define snprint_stack_trace(buf, size, trace, spaces)	do { } while (0)
-# define save_stack_trace_tsk_reliable(tsk, trace)	({ -ENOSYS; })
 #endif /* CONFIG_STACKTRACE */
 
 #if defined(CONFIG_STACKTRACE) && defined(CONFIG_HAVE_RELIABLE_STACKTRACE)
diff --git a/kernel/stacktrace.c b/kernel/stacktrace.c
index b38333b3bc18..dd55312f3fe9 100644
--- a/kernel/stacktrace.c
+++ b/kernel/stacktrace.c
@@ -30,12 +30,6 @@ void stack_trace_print(unsigned long *entries, unsigned int nr_entries,
 }
 EXPORT_SYMBOL_GPL(stack_trace_print);
 
-void print_stack_trace(struct stack_trace *trace, int spaces)
-{
-	stack_trace_print(trace->entries, trace->nr_entries, spaces);
-}
-EXPORT_SYMBOL_GPL(print_stack_trace);
-
 /**
  * stack_trace_snprint - Print the entries in the stack trace into a buffer
  * @buf:	Pointer to the print buffer
@@ -72,14 +66,6 @@ int stack_trace_snprint(char *buf, size_t size, unsigned long *entries,
 }
 EXPORT_SYMBOL_GPL(stack_trace_snprint);
 
-int snprint_stack_trace(char *buf, size_t size,
-			struct stack_trace *trace, int spaces)
-{
-	return stack_trace_snprint(buf, size, trace->entries,
-				   trace->nr_entries, spaces);
-}
-EXPORT_SYMBOL_GPL(snprint_stack_trace);
-
 /*
  * Architectures that do not implement save_stack_trace_*()
  * get these weak aliases and once-per-bootup warnings