On Tue, Feb 5, 2013 at 3:02 AM, Mulyadi Santosa <[email protected]>wrote:
> On Tue, Feb 5, 2013 at 9:13 AM, Shraddha Kamat <[email protected]> wrote: > > What is a kernel DSO ? I encountered it while > > I was reading perf code. > > AFAIK, it's a virtual "library", which act as a "hub" when user space > application does system call. > > Specifically, when one does system call, it jumps to this DSO. Then, > IIRC, this DSO determines whether to use int 80h or sysenter/syscall > (for x86). Following it up, system call flows as usual. > > You can see this DSO's address by using cat /proc/self/maps. Look for > "vdso". > > Some googling http://lkml.indiana.edu/hypermail/linux/kernel/0306.2/0674.html > -- > regards, > > Mulyadi Santosa > Freelance Linux trainer and consultant > > blog: the-hydra.blogspot.com > training: mulyaditraining.blogspot.com > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Thank you Warm Regards Anuz
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