linux-kernel - linux-next: build failure after merge of the mm tree

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Message-ID: <20250312113612.31ac808e@canb.auug.org.au>
Date: Wed, 12 Mar 2025 11:36:12 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Wei Yang <richard.weiyang@...il.com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree

Hi all,

After merging the mm tree, today's linux-next build (native powerpc perf)
failed like this:

In file included from arch/powerpc/util/../../../util/pmu.h:5,
                 from arch/powerpc/util/pmu.c:5:
tools/include/linux/bitmap.h: In function 'bitmap_alloc':
tools/include/linux/bitmap.h:83:69: error: unused parameter 'flags' [-Werror=unused-parameter]
   83 | static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags)
      |                                                               ~~~~~~^~~~~
cc1: all warnings being treated as errors

Caused by commit

  351b9e493b09 ("lib/interval_tree: add test case for interval_tree_iter_xxx() helpers")

I have applied the following hack for today.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 12 Mar 2025 11:03:37 +1100
Subject: [PATCH] hack for "lib/interval_tree: add test case for
 interval_tree_iter_xxx() helpers"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 tools/include/linux/bitmap.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 8166719178f7..d4d300040d01 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h
@@ -80,7 +80,7 @@ static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
 		__bitmap_or(dst, src1, src2, nbits);
 }
 
-static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags)
+static inline unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags __maybe_unused)
 {
 	return malloc(bitmap_size(nbits));
 }
-- 
2.45.2

-- 
Cheers,
Stephen Rothwell

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