From: Yury Norov <yury.norov@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-mmc@vger.kernel.org, linux-perf-users@vger.kernel.org,
kvm@vger.kernel.org,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Alexander Lobakin <alobakin@pm.me>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Alexey Klimov <aklimov@redhat.com>,
Andrea Merello <andrea.merello@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Ben Gardon <bgardon@google.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Brian Cain <bcain@codeaurora.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Christoph Lameter <cl@linux.com>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
David Hildenbrand <david@redhat.com>,
Dennis Zhou <dennis@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Heiko Carstens <hca@linux.ibm.com>,
Ian Rogers <irogers@google.com>, Ingo Molnar <mingo@redhat.com>,
Jaegeuk Kim <jaegeuk@kernel.org>,
Jakub Kicinski <kuba@kernel.org>, Jiri Olsa <jolsa@redhat.com>,
Joe Perches <joe@perches.com>, Jonas Bonn <jonas@southpole.se>,
Leo Yan <leo.yan@linaro.org>, Mark Rutland <mark.rutland@arm.com>,
Namhyung Kim <namhyung@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paolo Bonzini <pbonzini@redhat.com>, Peter Xu <peterx@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Petr Mladek <pmladek@suse.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Rich Felker <dalias@libc.org>,
Samuel Mendoza-Jonas <sam@mendozajonas.com>,
Sean Christopherson <seanjc@google.com>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Shuah Khan <shuah@kernel.org>,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Steven Rostedt <rostedt@goodmis.org>, Tejun Heo <tj@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Ulf Hansson <ulf.hansson@linaro.org>,
Will Deacon <will@kernel.org>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Yury Norov <yury.norov@gmail.com>
Cc: kernel test robot <lkp@intel.com>
Subject: [PATCH 01/17] bitops: protect find_first_{,zero}_bit properly
Date: Sat, 14 Aug 2021 14:16:57 -0700 [thread overview]
Message-ID: <20210814211713.180533-2-yury.norov@gmail.com> (raw)
In-Reply-To: <20210814211713.180533-1-yury.norov@gmail.com>
find_first_bit() and find_first_zero_bit() are not protected with
ifdefs as other functions in find.h. It causes build errors on some
platforms if CONFIG_GENERIC_FIND_FIRST_BIT is enabled.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Fixes: 2cc7b6a44ac2 ("lib: add fast path for find_first_*_bit() and find_last_bit()")
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
include/asm-generic/bitops/find.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h
index 0d132ee2a291..835f959a25f2 100644
--- a/include/asm-generic/bitops/find.h
+++ b/include/asm-generic/bitops/find.h
@@ -97,6 +97,7 @@ unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
#ifdef CONFIG_GENERIC_FIND_FIRST_BIT
+#ifndef find_first_bit
/**
* find_first_bit - find the first set bit in a memory region
* @addr: The address to start the search at
@@ -116,7 +117,9 @@ unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
return _find_first_bit(addr, size);
}
+#endif
+#ifndef find_first_zero_bit
/**
* find_first_zero_bit - find the first cleared bit in a memory region
* @addr: The address to start the search at
@@ -136,6 +139,8 @@ unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
return _find_first_zero_bit(addr, size);
}
+#endif
+
#else /* CONFIG_GENERIC_FIND_FIRST_BIT */
#ifndef find_first_bit
--
2.30.2
next prev parent reply other threads:[~2021-08-14 21:17 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-14 21:16 [PATCH RESEND 00/17] Resend bitmap patches Yury Norov
2021-08-14 21:16 ` Yury Norov [this message]
2021-08-14 21:16 ` [PATCH 02/17] bitops: move find_bit_*_le functions from le.h to find.h Yury Norov
2021-08-14 21:16 ` [PATCH 03/17] include: move find.h from asm_generic to linux Yury Norov
2021-08-14 21:17 ` [PATCH 04/17] arch: remove GENERIC_FIND_FIRST_BIT entirely Yury Norov
2021-08-14 21:17 ` [PATCH 05/17] lib: add find_first_and_bit() Yury Norov
2021-08-14 21:17 ` [PATCH 06/17] cpumask: use find_first_and_bit() Yury Norov
2021-08-14 21:17 ` [PATCH 07/17] all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate Yury Norov
2021-08-14 21:17 ` [PATCH 08/17] tools: sync tools/bitmap with mother linux Yury Norov
2021-08-14 21:17 ` [PATCH 09/17] cpumask: replace cpumask_next_* with cpumask_first_* where appropriate Yury Norov
2021-08-14 21:17 ` [PATCH 10/17] include/linux: move for_each_bit() macros from bitops.h to find.h Yury Norov
2021-08-14 21:17 ` [PATCH 11/17] find: micro-optimize for_each_{set,clear}_bit() Yury Norov
2021-08-26 13:57 ` Petr Mladek
2021-08-26 21:09 ` Yury Norov
2021-08-30 12:12 ` Petr Mladek
2021-08-30 16:15 ` Yury Norov
2021-08-14 21:17 ` [PATCH 12/17] Replace for_each_*_bit_from() with for_each_*_bit() where appropriate Yury Norov
2021-08-14 21:17 ` [PATCH 13/17] tools: Rename bitmap_alloc() to bitmap_zalloc() Yury Norov
2021-08-14 21:17 ` [PATCH 14/17] mm/percpu: micro-optimize pcpu_is_populated() Yury Norov
2021-08-14 21:17 ` [PATCH 15/17] bitmap: unify find_bit operations Yury Norov
2021-08-14 21:17 ` [PATCH 16/17] lib: bitmap: add performance test for bitmap_print_to_pagebuf Yury Norov
2021-08-14 21:17 ` [PATCH 17/17] vsprintf: rework bitmap_list_string Yury Norov
2021-08-15 11:09 ` Andy Shevchenko
2021-08-17 16:35 ` Yury Norov
2021-08-26 14:15 ` Petr Mladek
2021-08-26 20:59 ` Yury Norov
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