[PATCH] tile: nohz: warn if nohz_full uses hypervisor shared cores

2015-03-30 Thread cmetcalf
From: Chris Metcalf The "hypervisor shared" cores are ones that the Tilera hypervisor uses to receive interrupts to manage hypervisor-owned devices. It's a bad idea to try to use those cores with nohz_full, since they will get interrupted unpredictably -- and invisibly to Linux tracing tools,

[PATCH] tile: nohz: warn if nohz_full uses hypervisor shared cores

2015-03-30 Thread cmetcalf
From: Chris Metcalf cmetc...@ezchip.com The hypervisor shared cores are ones that the Tilera hypervisor uses to receive interrupts to manage hypervisor-owned devices. It's a bad idea to try to use those cores with nohz_full, since they will get interrupted unpredictably -- and invisibly to Linux