On 8/24/23 08:26, Dennis Zhou wrote:
On Wed, Aug 23, 2023 at 07:06:08AM +0200, Mateusz Guzik wrote:
Allocations and frees are globally serialized on the pcpu lock (and the
CPU hotplug lock if enabled, which is the case on Debian).
At least one frequent consumer allocates 4 back-to-back counters (and
frees them in the same manner), exacerbating the problem.
While this does not fully remedy scalability issues, it is a step
towards that goal and provides immediate relief.
Signed-off-by: Mateusz Guzik <mjguzik@xxxxxxxxx>
I'm happy with this. There are a few minor reflow of lines that I'd like
to do but other than that nice.
If there are no other comments and it's okay with Andrew I'll pick this
up tomorrow for-6.6 and the corresponding changes to fork.c.
Reviewed-by: Dennis Zhou <dennis@xxxxxxxxxx>
FWIW, the new version also looks correct to me.
Reviewed-by: Vegard Nossum <vegard.nossum@xxxxxxxxxx>
Vegard
