| Subject | Re: [PATCH 1/2] percpu-rw-semaphores: use light/heavy barriers | From | Peter Zijlstra <> | Date | Tue, 23 Oct 2012 22:57:11 +0200 |
| |
On Tue, 2012-10-23 at 21:23 +0200, Oleg Nesterov wrote: > > static void mb_ipi(void *arg) > { > smp_mb(); /* unneeded ? */ > } > > static void force_mb_on_each_cpu(void) > { > smp_mb(); > smp_call_function(mb_ipi, NULL, 1); > }
You know we're spending an awful lot of time and effort to get rid of such things, right? RT and HPC people absolutely hate these random IPI things.
|