Re: [PATCH v3 2/2] decrement static keys on real destroy time

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


On Thu, Apr 26, 2012 at 3:17 PM, Glauber Costa <glommer@xxxxxxxxxxxxx> wrote:
>> No, what I mean is that why can't you do about the same mutexed
>> activated inside static_key API function instead of requiring every
>> user to worry about the function returning asynchronously.
>> ie. synchronize inside static_key API instead of in the callers.
> Like this?

Yeah, something like that.  If keeping the inc operation a single
atomic op is important for performance or whatever reasons, you can
play some trick with large negative bias value while activation is
going on and use atomic_add_return() to determine both whether it's
the first incrementer and someone else is in the process of


To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at

[Linux Kernel Discussion]     [Ethernet Bridging]     [Linux Wireless Networking]     [Linux Bluetooth Networking]     [Linux Networking Users]     [VLAN]     [Git]     [IETF Annouce]     [Linux Assembly]     [Security]     [Bugtraq]     [Photo]     [Singles Social Networking]     [Yosemite Information]     [MIPS Linux]     [ARM Linux Kernel]     [ARM Linux]     [Linux Virtualization]     [Linux Security]     [Linux IDE]     [Linux RAID]     [Linux SCSI]     [Free Dating]

Add to Google Powered by Linux