| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <v2mdbb048f61004132326r8ac75382k1e42321ff0ed484a@mail.gmail.com> Date: Wed, 14 Apr 2010 11:56:58 +0530 From: rd bairva <rbairva@...il.com> To: dan.j.williams@...el.com Cc: linux-arm-kernel@...ts.arm.linux.org.uk, linux-kernel@...r.kernel.org Subject: Dmaengine query Hi Dan, I am currently writing dmaengine compatible DMA driver for our ARM based architecture, But I am facing some performance issues doing that. 1. dmaengine says callback should run in tasklet, and next transfer cannot be scheduled from the callback. Due to these restrictions I am getting some performance issue while playing sound in our architecture. Can callback call in DMA driver be placed out of spin_lock to submit new operations from callback? (only in asynchronous case) is this Ok? please comment. Thanks and regards, Ramdayal -- 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/
Powered by blists - more mailing lists