| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <553FDD06.8090504@ezchip.com> Date: Tue, 28 Apr 2015 15:18:30 -0400 From: Chris Metcalf <cmetcalf@...hip.com> To: <riel@...hat.com>, <linux-kernel@...r.kernel.org> CC: <tj@...nel.org>, <umgwanakikbuti@...il.com>, <lizefan@...wei.com>, <fweisbec@...il.com>, <gregkh@...uxfoundation.org> Subject: Re: [PATCH 2/2] show nohz_full cpus in sysfs On 04/24/2015 03:24 PM, riel@...hat.com wrote: > From: Rik van Riel<riel@...hat.com> > > Currently there is no way to query which CPUs are in nohz_full > mode from userspace. > > Export the CPU list running in nohz_full mode in sysfs, > specifically in the file /sys/devices/system/cpu/nohz_full > > This can be used by system management tools like libvirt, > openstack, and others to ensure proper task placement. > > Signed-off-by: Rik van Riel<riel@...hat.com> > --- > drivers/base/cpu.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) In the arch/tile distribution with our "dataplane" support, we have traditionally had a /sys/devices/system/cpu/dataplane file with the same semantics you are proposing. It's definitely helpful to userspace applications figuring out how to appropriately take over the machine they are being run on. Acked-by: Chris Metcalf <cmetcalf@...hip.com> -- Chris Metcalf, EZChip Semiconductor http://www.ezchip.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists