From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
Huacai Chen <chenhuacai@kernel.org>,
WANG Xuerui <kernel@xen0n.name>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
Dan Williams <dan.j.williams@intel.com>, Chris Mason <clm@fb.com>,
David Sterba <dsterba@suse.com>, Arnd Bergmann <arnd@arndb.de>,
Song Liu <song@kernel.org>, Yu Kuai <yukuai@fnnas.com>,
Li Nan <linan122@huawei.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev,
linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
linux-s390@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-btrfs@vger.kernel.org, linux-arch@vger.kernel.org,
linux-raid@vger.kernel.org
Subject: [PATCH 12/19] raid6: use static_call for raid6_recov_2data and raid6_recov_datap
Date: Tue, 12 May 2026 07:20:52 +0200 [thread overview]
Message-ID: <20260512052230.2947683-13-hch@lst.de> (raw)
In-Reply-To: <20260512052230.2947683-1-hch@lst.de>
Avoid expensive indirect calls for the recovery routines as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
lib/raid/raid6/algos.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/lib/raid/raid6/algos.c b/lib/raid/raid6/algos.c
index 65b75236ecf8..d333318e3301 100644
--- a/lib/raid/raid6/algos.c
+++ b/lib/raid/raid6/algos.c
@@ -26,6 +26,8 @@ static const struct raid6_recov_calls *raid6_recov_algo;
/* Selected algorithm */
DEFINE_STATIC_CALL_NULL(raid6_gen_syndrome_impl, *raid6_intx1.gen_syndrome);
DEFINE_STATIC_CALL_NULL(raid6_xor_syndrome_impl, *raid6_intx1.xor_syndrome);
+DEFINE_STATIC_CALL_NULL(raid6_recov_2data_impl, *raid6_recov_intx1.data2);
+DEFINE_STATIC_CALL_NULL(raid6_recov_datap_impl, *raid6_recov_intx1.datap);
/**
* raid6_gen_syndrome - generate RAID6 P/Q parity
@@ -126,7 +128,7 @@ void raid6_recov_2data(int disks, size_t bytes, int faila, int failb,
WARN_ON_ONCE(bytes > PAGE_SIZE);
WARN_ON_ONCE(failb <= faila);
- raid6_recov_algo->data2(disks, bytes, faila, failb, ptrs);
+ static_call(raid6_recov_2data_impl)(disks, bytes, faila, failb, ptrs);
}
EXPORT_SYMBOL_GPL(raid6_recov_2data);
@@ -151,7 +153,7 @@ void raid6_recov_datap(int disks, size_t bytes, int faila, void **ptrs)
WARN_ON_ONCE(bytes & 511);
WARN_ON_ONCE(bytes > PAGE_SIZE);
- raid6_recov_algo->datap(disks, bytes, faila, ptrs);
+ static_call(raid6_recov_datap_impl)(disks, bytes, faila, ptrs);
}
EXPORT_SYMBOL_GPL(raid6_recov_datap);
@@ -324,6 +326,8 @@ static int __init raid6_init(void)
*/
if (!raid6_recov_algo)
raid6_recov_algo = &raid6_recov_intx1;
+ static_call_update(raid6_recov_2data_impl, raid6_recov_algo->data2);
+ static_call_update(raid6_recov_datap_impl, raid6_recov_algo->datap);
pr_info("raid6: using %s recovery algorithm\n", raid6_recov_algo->name);
#ifdef MODULE
--
2.53.0
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next prev parent reply other threads:[~2026-05-12 5:25 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 5:20 cleanup the RAID6 P/Q library v2 Christoph Hellwig
2026-05-12 5:20 ` [PATCH 01/19] btrfs: require at least 4 devices for RAID 6 Christoph Hellwig
2026-05-12 11:42 ` David Sterba
2026-05-12 5:20 ` [PATCH 02/19] raid6: turn the userspace test harness into a kunit test Christoph Hellwig
2026-05-12 5:20 ` [PATCH 03/19] raid6: remove __KERNEL__ ifdefs Christoph Hellwig
2026-05-12 5:20 ` [PATCH 04/19] raid6: move to lib/raid/ Christoph Hellwig
2026-05-12 5:20 ` [PATCH 05/19] raid6: remove unused defines in pq.h Christoph Hellwig
2026-05-12 5:20 ` [PATCH 06/19] raid6: remove raid6_get_zero_page Christoph Hellwig
2026-05-12 5:20 ` [PATCH 07/19] raid6: use named initializers for struct raid6_calls Christoph Hellwig
2026-05-12 5:20 ` [PATCH 08/19] raid6: improve the public interface Christoph Hellwig
2026-05-12 5:20 ` [PATCH 09/19] raid6: hide internals Christoph Hellwig
2026-05-12 5:20 ` [PATCH 10/19] raid6: rework the init helpers Christoph Hellwig
2026-05-12 5:20 ` [PATCH 11/19] raid6: use static_call for gen_syndrom and xor_syndrom Christoph Hellwig
2026-05-12 5:20 ` Christoph Hellwig [this message]
2026-05-12 5:20 ` [PATCH 13/19] raid6: update top of file comments Christoph Hellwig
2026-05-12 5:20 ` [PATCH 14/19] raid6_kunit: use KUNIT_CASE_PARAM Christoph Hellwig
2026-05-12 5:20 ` [PATCH 15/19] raid6_kunit: dynamically allocate data buffers using vmalloc Christoph Hellwig
2026-05-12 5:20 ` [PATCH 16/19] raid6_kunit: cleanup dataptr handling Christoph Hellwig
2026-05-12 5:20 ` [PATCH 17/19] raid6_kunit: randomize parameters and increase limits Christoph Hellwig
2026-05-12 5:20 ` [PATCH 18/19] " Christoph Hellwig
2026-05-12 5:20 ` [PATCH 19/19] raid6_kunit: randomize buffer alignment Christoph Hellwig
2026-05-12 9:50 ` cleanup the RAID6 P/Q library v2 Ard Biesheuvel
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