William Lee Irwin III wrote:
Volano is all one process address space so it could be ->page_table_lock;
any chance you could find which spin_lock() call the pounded chunk of the
lock section jumps back to?
On Fri, Dec 12, 2003 at 02:30:27AM +1100, Nick Piggin wrote:
OK its in futex_wait, up_read(¤t->mm->mmap_sem) right after
out_release_sem (line 517).
So you get half points. Looks like its waiting on the bus rather than
spinning on a lock. Or am I'm wrong?
There is a spinloop in __up_read(), which is probably it.