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Open Source and information security mailing list archives
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Date: Mon, 21 Mar 2011 16:41:56 +0000 From: Russell King - ARM Linux <linux@....linux.org.uk> To: "Janorkar, Mayuresh" <mayur@...com> Cc: Carl Vanderlip <carlv@...eaurora.org>, David Brown <davidb@...eaurora.org>, Daniel Walker <dwalker@...o99.com>, Bryan Huntsman <bryanh@...eaurora.org>, "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>, Brian Swetland <swetland@...gle.com>, "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Dima Zavin <dima@...roid.com>, Colin Cross <ccross@...roid.com>, Rebecca Schultz Zavin <rebecca@...roid.com>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org> Subject: Re: [PATCH 07/20] video: msm: Allow users to request a larger x and y virtual fb On Mon, Mar 21, 2011 at 10:10:09AM +0530, Janorkar, Mayuresh wrote: > > + fix->line_length = var->xres * var->bits_per_pixel / 8; > Why to divide by 8? Atleast use >>3, bitwise operations that would take > less cpu cycles) > As I stated earlier define a new macro for var also. Modern compilers know about such things. >> 3 vs / 8 (probably) makes no difference to the generated code with the toolchains we use. -- 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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