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From: Mel Gorman <mgorman@techsingularity.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@kernel.org>,
	David Hildenbrand <david@redhat.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Dan Streetman <ddstreet@ieee.org>, Yang Shi <shy828301@gmail.com>,
	Linux-MM <linux-mm@kvack.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Mel Gorman <mgorman@techsingularity.net>
Subject: [PATCH 12/14] mm/mmap_lock: Remove dead code for !CONFIG_TRACING configurations
Date: Thu, 20 May 2021 09:48:07 +0100	[thread overview]
Message-ID: <20210520084809.8576-13-mgorman@techsingularity.net> (raw)
In-Reply-To: <20210520084809.8576-1-mgorman@techsingularity.net>

make W=1 generates the following warning in mmap_lock.c for allnoconfig

  mm/mmap_lock.c:213:6: warning: no previous prototype for ‘__mmap_lock_do_trace_start_locking’ [-Wmissing-prototypes]
   void __mmap_lock_do_trace_start_locking(struct mm_struct *mm, bool write)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  mm/mmap_lock.c:219:6: warning: no previous prototype for ‘__mmap_lock_do_trace_acquire_returned’ [-Wmissing-prototypes]
   void __mmap_lock_do_trace_acquire_returned(struct mm_struct *mm, bool write,
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  mm/mmap_lock.c:226:6: warning: no previous prototype for ‘__mmap_lock_do_trace_released’ [-Wmissing-prototypes]
   void __mmap_lock_do_trace_released(struct mm_struct *mm, bool write)

On !CONFIG_TRACING configurations, the code is dead so put it behind
an #ifdef.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
---
 mm/mmap_lock.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/mmap_lock.c b/mm/mmap_lock.c
index dcdde4f722a4..03ee85c696ef 100644
--- a/mm/mmap_lock.c
+++ b/mm/mmap_lock.c
@@ -205,6 +205,7 @@ void trace_mmap_lock_unreg(void)
 
 #endif /* CONFIG_MEMCG */
 
+#ifdef CONFIG_TRACING
 /*
  * Trace calls must be in a separate file, as otherwise there's a circular
  * dependency between linux/mmap_lock.h and trace/events/mmap_lock.h.
@@ -228,3 +229,4 @@ void __mmap_lock_do_trace_released(struct mm_struct *mm, bool write)
 	TRACE_MMAP_LOCK_EVENT(released, mm, write);
 }
 EXPORT_SYMBOL(__mmap_lock_do_trace_released);
+#endif /* CONFIG_TRACING */
-- 
2.26.2


  parent reply	other threads:[~2021-05-20  8:50 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20  8:47 [PATCH 00/14] Clean W=1 build warnings for mm/ Mel Gorman
2021-05-20  8:47 ` [PATCH 01/14] mm/vmscan: Remove kerneldoc-like comment from isolate_lru_pages Mel Gorman
2021-05-20  8:47 ` [PATCH 02/14] mm/vmalloc: Include header for prototype of set_iounmap_nonlazy Mel Gorman
2021-05-20  8:47 ` [PATCH 03/14] mm/page_alloc: Make should_fail_alloc_page a static function should_fail_alloc_page static Mel Gorman
2021-07-08 19:18   ` Matteo Croce
2021-07-09  9:30     ` Mel Gorman
2021-05-20  8:47 ` [PATCH 04/14] mm/mapping_dirty_helpers: Remove double Note in kerneldoc Mel Gorman
2021-05-20  8:48 ` [PATCH 05/14] mm/early_ioremap: Add prototype for early_memremap_pgprot_adjust Mel Gorman
2021-05-20  8:48 ` [PATCH 06/14] mm/memcontrol.c: Fix kerneldoc comment for mem_cgroup_calculate_protection Mel Gorman
2021-05-20 23:24   ` Chris Down
2021-05-20  8:48 ` [PATCH 07/14] mm/memory_hotplug: Fix kerneldoc comment for __try_online_node Mel Gorman
2021-05-20 10:42   ` David Hildenbrand
2021-05-20  8:48 ` [PATCH 08/14] mm/memory_hotplug: Fix kerneldoc comment for __remove_memory Mel Gorman
2021-05-20 10:42   ` David Hildenbrand
2021-05-20  8:48 ` [PATCH 09/14] mm/zbud: Add kerneldoc fields for zbud_pool Mel Gorman
2021-05-20  8:48 ` [PATCH 10/14] mm/z3fold: Add kerneldoc fields for z3fold_pool Mel Gorman
2021-05-20  8:48 ` [PATCH 11/14] mm/swap: Make swap_address_space an inline function Mel Gorman
2021-05-20  8:48 ` Mel Gorman [this message]
2021-05-20  8:48 ` [PATCH 13/14] mm/page_alloc: Move prototype for find_suitable_fallback Mel Gorman
2021-05-20  8:48 ` [PATCH 14/14] mm/swap: Make NODE_DATA an inline function on CONFIG_FLATMEM Mel Gorman
2021-05-20 22:51 ` [PATCH 00/14] Clean W=1 build warnings for mm/ Yang Shi
2021-05-25 11:48 ` Vlastimil Babka
2021-05-25 14:25   ` Mel Gorman

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