linux-kernel - [PATCH v2 4/8] bitops/le.h: Add le support for find_last

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Date:   Sun, 6 Dec 2020 15:48:32 +0900
From:   Levi Yun <ppbuk5246@...il.com>
To:     akpm@...ux-foundation.org, yury.norov@...il.com,
        andriy.shevchenko@...ux.intel.com,
        richard.weiyang@...ux.alibaba.com, christian.brauner@...ntu.com,
        arnd@...db.de, jpoimboe@...hat.com, changbin.du@...el.com,
        rdunlap@...radead.org, masahiroy@...nel.org,
        gregkh@...uxfoundation.org, peterz@...radead.org,
        peter.enderborg@...y.com, krzk@...nel.org,
        brendanhiggins@...gle.com, keescook@...omium.org,
        broonie@...nel.org, matti.vaittinen@...rohmeurope.com,
        mhiramat@...nel.org, jpa@....mail.kapsi.fi, nivedita@...m.mit.edu,
        glider@...gle.com, orson.zhai@...soc.com,
        takahiro.akashi@...aro.org, clm@...com, josef@...icpanda.com,
        dsterba@...e.com, dushistov@...l.ru
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-btrfs@...r.kernel.org
Subject: [PATCH v2 4/8] bitops/le.h: Add le support for find_last_bit

Inspired find_next_*_bit function series, add find_last_zero_bit.
These patch adds declarations for find_last_zero_bit.
This patch is for le support of find_last_bit and find_last_bit_zero.

Signed-off-by: Levi Yun <ppbuk5246@...il.com>
---
 include/asm-generic/bitops/le.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h
index 188d3eba3ace..3d6661cc8077 100644
--- a/include/asm-generic/bitops/le.h
+++ b/include/asm-generic/bitops/le.h
@@ -27,6 +27,18 @@ static inline unsigned long find_first_zero_bit_le(const void *addr,
 	return find_first_zero_bit(addr, size);
 }
 
+static inline unsigned long find_last_bit_le(const void *addr,
+		unsigned long size)
+{
+	return find_last_bit(addr, size);
+}
+
+static inline unsigned long find_last_zero_bit_le(const void *addr,
+		unsigned long size)
+{
+	return find_last_zero_bit(addr, size);
+}
+
 #elif defined(__BIG_ENDIAN)
 
 #define BITOP_LE_SWIZZLE	((BITS_PER_LONG-1) & ~0x7)
@@ -46,6 +58,14 @@ extern unsigned long find_next_bit_le(const void *addr,
 	find_next_zero_bit_le((addr), (size), 0)
 #endif
 
+#ifndef find_last_zero_bit_le
+extern unsigned long find_last_zero_bit_le(const void *addr, unsigned long size);
+#endif
+
+#ifndef find_last_bit_le
+extern unsigned long find_last_bit_le(const void *addr, unsigned long size);
+#endif
+
 #else
 #error "Please fix <asm/byteorder.h>"
 #endif
-- 
2.27.0