On Wed Jan 18, 2023 at 7:05 PM AEST, David Howells wrote:
> Linus Torvalds wrote:
>
> > And for the kernel, where we don't have bad locking, and where we
> > actually use fine-grained locks that are _near_ the data that we are
> > locking (the lockref of the dcache is obviously one example of that
Linus Torvalds wrote:
> And for the kernel, where we don't have bad locking, and where we
> actually use fine-grained locks that are _near_ the data that we are
> locking (the lockref of the dcache is obviously one example of that,
> but the skbuff queue you mention is almost certainly exactly th
On Mon, Jan 16, 2023 at 6:08 AM David Howells wrote:
>
> I'm not sure how relevant it is to the topic, but I seem to remember you
> having a go at implementing spinlocks with x86_64 memory transaction
> instructions a while back. Do you have any thoughts on whether these
> i
On Mon, Jan 16, 2023 at 02:08:15PM +, David Howells wrote:
> Hi Linus,
>
> I'm not sure how relevant it is to the topic, but I seem to remember you
> having a go at implementing spinlocks with x86_64 memory transaction
> instructions a while back. Do you have any thoug
Hi Linus,
I'm not sure how relevant it is to the topic, but I seem to remember you
having a go at implementing spinlocks with x86_64 memory transaction
instructions a while back. Do you have any thoughts on whether these
instructions are ever likely to become something we can use?
I was lo
