lug-bg: Shared memory

[sn@xxxxxxxxx (Svetoslav Nikolov)]

Zdraveite,

Niakoi znae li :
1)  Kak da se alocira blok ot pametta, koito da ne se "swap"-va i da mu se 
    vzeme fizicheskia adres. 

2) Vazmojno li e veche alociran blok ot pamet da se obiavi za "shared memory".

   (za funkciite "shmget", "shmctl" i t.n. ot IPC sam chel no ne vijdam kak 
  mogat da izpulniat taka postavenata zadacha)

Zashto mi  e nujno li ?
 -  Imam platka koiato moje da bude "busmaster" i da prehvurlia do 132 MB/sec.
Za celta obache na DMA controller-a i, triabva da podam fizicheski adres. 
Programata koiato osnovno shte upravliava platkata po zaiavka triabva da 
podade "pointer" na druga programa koiato da izpolzva dannite prehvarleni ot 
platkata. Upravliavashtata programa ne e draiver, i se izpulniava v
tai-narechenia "user space".

Blagodaria predvaritelno za kakvito i da e saveti.
Svetoslav.


-- 
=====================================================
 Svetoslav Nikolov
 Dept. of Information Technology
 Build. 344, room 209
 Technical University of Denmark
 DK-2800 Lyngby, Denmark
 
 E-mail: sn@xxxxxxxxx
 Phone : +45 45 25 37 05
 Fax   : +45 45 88 01 17
 URL   :  http://www.it.dtu.dk/~sn
=====================================================
==================================================================
A mail-list of Linux Users Group - Bulgaria (bulgarian linuxers)
Otpiswaneto RABOTI !!! : Majordomo@xxxxxxxxxxxxxxxxxx UNSUBSCRIBE LUG-BG
http://www.linux-bulgaria.org/ Hosted by Internet Group Ltd. - Stara Zagora