Re: AIM7 40% regression with 2.6.26-rc1

[Andi Kleen]

"Zhang, Yanmin" <yanmin_zhang@xxxxxxxxxxxxxxx> writes:
> 3) Caller of lcok_kernel are sys_fcntl/vfs_ioctl/tty_release/chrdev_open.

I have an older patchkit that introduced unlocked_fnctl for some cases. It was 
briefly in mm but then dropped. Sounds like it is worth resurrecting?

tty_* is being taken care of by Alan.

chrdev_open is more work.

-Andi (who BTW never quite understood why BKL is a semaphore now and not
a spinlock?)
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