Messages in this thread | | | Date | Tue, 18 Dec 2018 12:31:19 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH] perf/x86/intel: Avoid unnecessary reallocations of memory allocated in cpu hotplug prepare state |
| |
On Tue, Dec 18, 2018 at 12:16:37PM +0100, Sebastian Andrzej Siewior wrote: > On 2018-12-18 12:02:09 [+0100], Peter Zijlstra wrote: > > On Tue, Dec 18, 2018 at 06:30:33PM +0800, zhe.he@windriver.com wrote: > > > Besides, in preempt-rt full mode, the freeing can happen in atomic context and > > > thus cause the following BUG. > > > > Hurm, I though we fixed all those long ago.. > > > > And no, the patch is horrible; that's what we have things like > > x86_pmu::cpu_dead() for. > > ehm, you say we keep memory allocation +free on CPU up/down?
Sure, why not?
| |