Re: [libvirt] [resend v2 1/7] Resctrl: Add some utils functions

On Tuesday, 7 February 2017 at 12:11 AM, Daniel P. Berrange wrote: > On Mon, Feb 06, 2017 at 10:23:36AM +0800, Eli Qiao wrote: > > This patch adds some utils struct and functions to expose resctrl > > information. > > > > virResCtrlAvailable: If resctrl interface exist on host > > virResCtrlGet: get specify type resource contral information > > virResCtrlInit: initialize resctrl struct from the host's sys fs. > > ResCtrlAll[]: an array to maintain resource control information. > > > > Signed-off-by: Eli Qiao <liyong.qiao(a)intel.com (mailto:liyong.qiao@intel.com)> > > --- > > +}; > > + > > + > > +typedef struct _virResCacheBank virResCacheBank; > > +typedef virResCacheBank *virResCacheBankPtr; > > +struct _virResCacheBank { > > + unsigned int host_id; > > + unsigned long long cache_size; > > + unsigned long long cache_left; > > + unsigned long long cache_min; > > + virBitmapPtr cpu_mask; > > +}; > > > > > > +typedef struct _virResCtrl virResCtrl; > > +typedef virResCtrl *virResCtrlPtr; > > +struct _virResCtrl { > > + bool enabled; > > + const char *name; > > + int num_closid; > > + int cbm_len; > > + int min_cbm_bits; > > + const char* cache_level; > > + int num_banks; > > + virResCacheBankPtr cache_banks; > > +}; > > > > > Can any of these fields change at runtime, or are they all > immutable once populated. Only cache_banks will be change at runtime, such as cache_left on each socket will be updated if libvirt allocates cache to domains.