From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org Subject: + kfifo-add-kfifo_initialized.patch added to -mm tree Date: Mon, 04 Jan 2010 14:05:03 -0800 Message-ID: <201001042205.o04M53UT020995@imap1.linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:37336 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753731Ab0ADWGS (ORCPT ); Mon, 4 Jan 2010 17:06:18 -0500 Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: mm-commits@vger.kernel.org Cc: andi@firstfloor.org, ak@linux.intel.com, awalls@radix.net, dhillonv10@gmail.com, dmitry.torokhov@gmail.com, rdreier@cisco.com, stefani@seibold.net The patch titled kfifo: add kfifo_initialized has been added to the -mm tree. Its filename is kfifo-add-kfifo_initialized.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: kfifo: add kfifo_initialized From: Andi Kleen Simple inline that checks if kfifo_init() has been executed on a fifo. This is useful for walking all per CPU fifos, when some of them might not have been brought up yet. Signed-off-by: Andi Kleen Cc: Stefani Seibold Cc: Roland Dreier Cc: Dmitry Torokhov Cc: Andy Walls Cc: Vikram Dhillon Signed-off-by: Andrew Morton --- include/linux/kfifo.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff -puN include/linux/kfifo.h~kfifo-add-kfifo_initialized include/linux/kfifo.h --- a/include/linux/kfifo.h~kfifo-add-kfifo_initialized +++ a/include/linux/kfifo.h @@ -116,6 +116,16 @@ extern __must_check unsigned int kfifo_o extern __must_check unsigned int kfifo_out_peek(struct kfifo *fifo, void *to, unsigned int len, unsigned offset); +/** + * kfifo_initialized - Check if kfifo is initialized. + * @fifo: fifo to check + * Return %true if FIFO is initialized, otherwise %false. + * Assumes the fifo was 0 before. + */ +static inline bool kfifo_initialized(struct kfifo *fifo) +{ + return fifo->buffer != 0; +} /** * kfifo_reset - removes the entire FIFO contents _ Patches currently in -mm which might be from andi@firstfloor.org are origin.patch kernel-signalc-fix-kernel-information-leak-with-print-fatal-signals=1.patch kfifo-use-void-pointers-for-user-buffers.patch kfifo-make-kfifo_in-atomic.patch kfifo-sanitize-_user-error-handling.patch kfifo-add-kfifo_out_peek.patch kfifo-add-kfifo_initialized.patch kfifo-document-everywhere-that-size-has-to-be-power-of-two.patch hardware-latency-detector-remove-default-m.patch kbuild-move-fno-dwarf2-cfi-asm-to-powerpc-only.patch mm-introduce-dump_page-and-print-symbolic-flag-names.patch tracehooks-kill-some-pt_ptraced-checks.patch tracehooks-check-pt_ptraced-before-reporting-the-single-step.patch ptrace_signal-check-pt_ptraced-before-reporting-a-signal.patch export-__ptrace_detach-and-do_notify_parent_cldstop.patch reorder-the-code-in-kernel-ptracec.patch implement-utrace-ptrace.patch utrace-core.patch