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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Cc: trini@konsulko.com, Rasmus Villemoes <rasmus.villemoes@prevas.dk>,
	sjg@chromium.org, Wolfgang Denk <wd@denx.de>
Subject: [PATCH v3 0/3] arm64: Add optimized memset/memcpy/memove functions
Date: Wed, 11 Aug 2021 16:02:39 +0200	[thread overview]
Message-ID: <20210811140242.1942483-1-sr@denx.de> (raw)


On an NXP LX2160 based platform it has been noticed, that the currently
implemented memset/memcpy functions for aarch64 are suboptimal.
Especially the memset() for clearing the NXP MC firmware memory is very
expensive (time-wise).

By using optimized functions, a speedup of ~ factor 6 has been measured.

This patchset now adds the optimized functions ported from this
repository:
https://github.com/ARM-software/optimized-routines

As the optimized memset function make use of the dc opcode, which needs
the caches to be enabled, an additional check is added and a simple
memset version is used in this case.

Please note that checkpatch.pl complains about some issue with this
imported file: arch/arm/lib/asmdefs.h
Since it's imported I did explicitly not make any changes here, to make
potential future sync'ing easer.

Thanks,
Stefan

Changes in v3:
- Add memmove alias, as this function also handles it optimized
- Add memmove as well

Changes in v2:
- Add file names and locations and git commit ID from imported files
  to the commit message
- New patch

Stefan Roese (3):
  arm64: arch/arm/lib: Add optimized memset/memcpy/memmove functions
  arm64: memset-arm64: Use simple memset when cache is disabled
  arm64: Kconfig: Enable usage of optimized memset/memcpy/memmove

 arch/arm/Kconfig              |  38 +++++-
 arch/arm/include/asm/string.h |   4 +
 arch/arm/lib/Makefile         |   5 +
 arch/arm/lib/asmdefs.h        |  98 ++++++++++++++
 arch/arm/lib/memcpy-arm64.S   | 242 ++++++++++++++++++++++++++++++++++
 arch/arm/lib/memset-arm64.S   | 146 ++++++++++++++++++++
 6 files changed, 527 insertions(+), 6 deletions(-)
 create mode 100644 arch/arm/lib/asmdefs.h
 create mode 100644 arch/arm/lib/memcpy-arm64.S
 create mode 100644 arch/arm/lib/memset-arm64.S

-- 
2.32.0


             reply	other threads:[~2021-08-11 14:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-11 14:02 Stefan Roese [this message]
2021-08-11 14:02 ` [PATCH v3 1/3] arm64: arch/arm/lib: Add optimized memset/memcpy/memmove functions Stefan Roese
2021-08-11 14:02 ` [PATCH v3 2/3] arm64: memset-arm64: Use simple memset when cache is disabled Stefan Roese
2021-08-11 14:02 ` [PATCH v3 3/3] arm64: Kconfig: Enable usage of optimized memset/memcpy/memmove Stefan Roese
2021-08-11 14:25 ` [PATCH v3 0/3] arm64: Add optimized memset/memcpy/memove functions Tom Rini
2021-08-11 14:28   ` Stefan Roese
2021-08-12  8:43     ` Stefan Roese

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