mutual exclusion in vkbd

From: Norbert Koch (NKoch_at_demig.de)
Date: 05/31/05

  • Next message: Maksim Yevmenkin: "Re: mutual exclusion in vkbd" 
    To: <freebsd-hackers@freebsd.org>
Date: Tue, 31 May 2005 17:38:45 +0200

    Hello.

    I am currently trying to backport vkbd to FreeBSD 4.

    Maksim Yevmenkin uses mtx_lock()/mtx_unlock() for
    protecting access to data structures under FreeBSD 5/6
    between the device functions and the kernel thread.

    How should I best do this under FreeBSD 4?

    Would something like splhigh() work in that context?
    Or should I use lockmgr with LK_EXCLUSIVE/LK_RELEASE?
    Is there any (pseudo)process context inside a kernel task?

    Thank you for any help,

    Norbert Koch
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  • Next message: Maksim Yevmenkin: "Re: mutual exclusion in vkbd"

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