From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evgeniy Polyakov Subject: [take4 0/4] kevent: Generic event handling mechanism. Date: Sat, 5 Aug 2006 17:02:35 +0400 Message-ID: <11547829553148@2ka.mipt.ru> References: <20060731103322.GA1898@2ka.mipt.ru> Reply-To: Evgeniy Polyakov Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Cc: David Miller , Ulrich Drepper , Evgeniy Polyakov , netdev , Zach Brown Return-path: Received: from dea.vocord.ru ([217.67.177.50]:42476 "EHLO uganda.factory.vocord.ru") by vger.kernel.org with ESMTP id S1161242AbWHEMi2 convert rfc822-to-8bit (ORCPT ); Sat, 5 Aug 2006 08:38:28 -0400 In-Reply-To: <20060731103322.GA1898@2ka.mipt.ru> To: lkml Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Generic event handling mechanism. I send this patchset for comments and review, it still contains AIO and aio_sendfile() implementation on top of get_block() abstraction, which was decided to postpone for a while (it is simpler right now to generate patchset as a whole, when kevent will be ready for merge, I will generate patchset without AIO stuff). It does not contain mapped buffer implementation, since it's design is not 100% completed, I will present that implementation in the third patchset. Changes from 'take3' patchset: * removed serializing mutex from kevent_user_wait() * moved storage list processing to RCU * removed lockdep screaming - all storage locks are initialized in the same function, so it was learned to differentiate between various cases * remove kevent from storage if is marked as broken after callback * fixed a typo in mmaped buffer implementation which would end up in wrong index calcualtion Changes from 'take2' patchset: * split kevent_finish_user() to locked and unlocked variants * do not use KEVENT_STAT ifdefs, use inline functions instead * use array of callbacks of each type instead of each kevent callback initialization * changed name of ukevent guarding lock * use only one kevent lock in kevent_user for all hash buckets instead of per-bucket locks * do not use kevent_user_ctl structure instead provide needed arguments as syscall parameters * various indent cleanups * added optimisation, which is aimed to help when a lot of kevents are being copied from userspace * mapped buffer (initial) implementation (no userspace yet) Changes from 'take1' patchset: - rebased against 2.6.18-git tree - removed ioctl controlling - added new syscall kevent_get_events(int fd, unsigned int min_nr, unsigned int max_nr, unsigned int timeout, void __user *buf, unsigned flags) - use old syscall kevent_ctl for creation/removing, modification and initial kevent initialization - use mutuxes instead of semaphores - added file descriptor check and return error if provided descriptor does not match kevent file operations - various indent fixes - removed aio_sendfile() declarations. Thank you. Signed-off-by: Evgeniy Polyakov