Kernel futex changes with get_futex_key()

Austin Foxley austinf at cetoncorp.com
Sun Jan 24 17:48:43 UTC 2010


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On 01/23/2010 08:15 PM, Kevin Day wrote:
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.32.y.git;a=commit;h=d4c893f20758ff549e4aaa4a02a79e563deaebb9
> 
> Look at the performance and compatibility section of that commit.
> 
> They only mention glibc.
> Does uClibc follow the same behavior as glibc in the case or is it different?

Only the nptl branch even uses futexes, and in this case we are the same as
glibc. We always expect to explicitly initialize futexes before doing a FUTEX_WAIT.

Thanks,
- -Austin
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