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Date: Tue, 9 Jun 2015 22:07:51 +0200 From: Sebastian Andrzej Siewior <sebastian@...akpoint.cc> To: Stefan Agner <stefan@...er.ch> Cc: dwmw2@...radead.org, computersforpeace@...il.com, mark.rutland@....com, boris.brezillon@...e-electrons.com, aaron@...tycactus.com, marb@...at.de, pawel.moll@....com, ijc+devicetree@...lion.org.uk, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, robh+dt@...nel.org, linux-mtd@...ts.infradead.org, kernel@...gutronix.de, galak@...eaurora.org, shawn.guo@...aro.org, linux-arm-kernel@...ts.infradead.org, bpringlemeir@...ps.com Subject: Re: [PATCH v4 1/6] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others On 2015-06-03 17:05:16 [+0200], Stefan Agner wrote: > As Boris guessed correctly, the reason I used the raw variant was due to > performance improvements due to the barrier. However, I will use yeah, do you have any numbers by chance? > {read|write}l_relaxed instead, which should offer endian abstraction > while not having the performance penalty due to extensive barriers... well, even those |$ git grep readl_relaxed arch/powerpc/ |arch/powerpc/include/asm/io.h:#define readl_relaxed(addr) readl(addr) have the endian swap. So an abstraction like you provided earlier would be nice :) > -- > Stefan Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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