[lkml]   [2003]   [Dec]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [CFT][RFC] HT scheduler
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(&current->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.

-- wli
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 13:59    [W:0.077 / U:7.600 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site