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Date: Fri, 26 Oct 2012 13:46:38 -0500 From: Seth Jennings <sjenning@...ux.vnet.ibm.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> CC: linux-kernel@...r.kernel.org, Robert Jennings <rcj@...ux.vnet.ibm.com> Subject: Re: [PATCH] debugfs: add get/set for atomic types On 10/26/2012 11:13 AM, Greg Kroah-Hartman wrote: > On Fri, Oct 26, 2012 at 10:49:01AM -0500, Seth Jennings wrote: >> debugfs currently lacks the ability to create attributes >> that set/get atomic_t values. >> >> This patch adds support for this through a new >> debugfs_create_atomic_t() function. > > Why would you want to set an atomic variable type from userspace? In my particular use case, I'm not setting from userspace, only getting. All the other types are symmetric, being both settable and gettable, so I was just trying to blend with the other types. > What in-kernel code needs this? None, yet. I am working on code that does. If you would rather me send this as part of the patchset for that code, I can. I just wanted to get this in early if I could since it is functionality I can see others using. For an example, see drivers/staging/ramster/zcache-main.c:132 where both atomic and non-atomic version of stats are being maintained so that the non-atomic version can be read by debugfs. Beside not having an in-kernel user yet, does this approach look good to you? Seth -- 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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