user/sven/linux.git/include/linux/getcpu.h, branch v3.0.85Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v3.0.852006-09-29T23:47:55Z[PATCH] Define vsyscall cache as blob to make clearer that user space shouldn't use it2006-09-29T23:47:55ZAndi Kleenak@suse.de2006-09-29T23:47:55Zurn:sha1:34596dc9e59d7bece16fe5aba08116b49465da26
Signed-off-by: Andi Kleen <ak@suse.de>
[PATCH] Add the vgetcpu vsyscall2006-09-26T08:52:28ZVojtech Pavlikvojtech@suse.cz2006-09-26T08:52:28Zurn:sha1:c08c820508233b424deab3302bc404bbecc6493a
This patch adds a vgetcpu vsyscall, which depending on the CPU RDTSCP
capability uses either the RDTSCP or CPUID to obtain a CPU and node
numbers and pass them to the program.
AK: Lots of changes over Vojtech's original code:
Better prototype for vgetcpu()
It's better to pass the cpu / node numbers as separate arguments
to avoid mistakes when going from SMP to NUMA.
Also add a fast time stamp based cache using a user supplied
argument to speed things more up.
Use fast method from Chuck Ebbert to retrieve node/cpu from
GDT limit instead of CPUID
Made sure RDTSCP init is always executed after node is known.
Drop printk
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andi Kleen <ak@suse.de>