linux-kernel - [patch 0/2] genirq: Add functions to avoid driver hackery

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Date:	Sat, 15 Feb 2014 00:55:18 -0000
From:	Thomas Gleixner <tglx@...utronix.de>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Russell King <linux@....linux.org.uk>,
	Chris Ball <chris@...ntf.net>, linux-mmc@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [patch 0/2] genirq: Add functions to avoid driver hackery

Russell tricked me to look into the homebrewn kthread hackery of
drivers/mmc. I'm still trying to recover from that.

But it spurred an interesting discussion how to improve things and the
outcome was the following series of patches:

1) Provide means to synchronize only hard irq context

2) Provide means to trigger a threaded irq handler from any context

The main rationale is to cleanup the mess in drivers/mmc and other
places but each of the patches has a justification for itself
exemplified by the drivers/mmc use case, which is explained in detail
in the changelogs of the individual patches.

Russell has a working implementation for sdhci which relies on patch
#1 ready and quite some ideas how to make use of #2 to kill the
sdio_irq kthread hackery.

Thanks,

	tglx

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