[lkml]   [1996]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Accessing copy_to_user() from interrupt handler?

In, article <>,
Klaus-Georg Adams <> writes:
> This brings us back to the problem of kmalloc()ing ca. 1MB reliably. I
> prefer allocating the buffer in the ccd_open() rather than in
> module_init(). And so far there is no way to tell kmalloc() to page
> out a couple of user pages if memory is running low instead of
> failing. vmalloc() works, but then you don't want page faults when
> reading from the CCD.
It seems that vmalloc needs an option to actually allocate the pages it
maps (I was assuming it does that already?).

Trapped, like a trap in a trap.
-- Dorothy Parker
Matthias Urlichs \ noris network GmbH / Xlink-POP Nürnberg
Schleiermacherstraße 12 \ Linux+Internet / EMail:
90491 Nürnberg (Germany) \ Consulting+Programming+Networking+etc'ing
PGP: 1024/4F578875 1B 89 E2 1C 43 EA 80 44 15 D2 29 CF C6 C7 E0 DE
Click <A HREF="">here</A>. 42

 \ /
  Last update: 2005-03-22 13:37    [W:0.061 / U:6.848 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site