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SUSE:SLE-12-SP1:Update
xen.3880
57da8883-credit1-fix-mask-to-be-used-for-tickli...
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File 57da8883-credit1-fix-mask-to-be-used-for-tickling.patch of Package xen.3880
# Commit f83fc393b2bb0a8b97bca07d810684a2c709aaa8 # Date 2016-09-15 12:39:47 +0100 # Author Dario Faggioli <dario.faggioli@citrix.com> # Committer George Dunlap <george.dunlap@citrix.com> xen: credit1: fix mask to be used for tickling in Credit1 If there are idle pcpus inside the waking vcpu's soft-affinity mask, we should really tickle one of them (this is one of the purposes of the __runq_tickle() function itself!), not just any idle pcpu. The issue has been introduced in 02ea5031825d ("credit1: properly deal with pCPUs not in any cpupool"), where the usage of idle_mask is changed, without updating the bottom of the function, where it is also referenced. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: George Dunlap <george.dunlap@citrix.com> --- a/xen/common/sched_credit.c +++ b/xen/common/sched_credit.c @@ -467,11 +467,12 @@ __runq_tickle(unsigned int cpu, struct c if ( opt_tickle_one_idle ) { this_cpu(last_tickle_cpu) = - cpumask_cycle(this_cpu(last_tickle_cpu), &idle_mask); + cpumask_cycle(this_cpu(last_tickle_cpu), + csched_balance_mask(cpu)); cpumask_set_cpu(this_cpu(last_tickle_cpu), &mask); } else - cpumask_or(&mask, &mask, &idle_mask); + cpumask_or(&mask, &mask, csched_balance_mask(cpu)); } /* Did we find anyone? */
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