[lkml]   [2001]   [May]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectKernel memory mapped into user process
Hi ,

I have a proposition at hand to optimize getting system time by
the system call(gettimeofday()) overhead. This can be implemented by
keeping a read-only page of kernel memory mapped into user processes
for reading quickly. A kernel process can keep that page up-to-date.

I did some browsing of this mailing list archives to get the
following related
* mapping user space buffer to kernel address space
* Direct I/O
* Zero Copy IO
None of these seem to specifically address my problem.

So can the experienced please throw some light on the issues involved
in having a read-only page of kernel memory mapped into user process.
Any help/suggestions will be much appreciated. Please CC your comments
to ""

Thanks and Regards,

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:53    [W:0.033 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site