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authorMaciej S. Szmigiero <maciej.szmigiero@oracle.com>2021-04-13 16:08:27 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2021-05-27 07:45:54 -0400
commit22721a56109940f15b673d0f01907b7a7202275e (patch)
treee9d63c4fa3a8c15bcf1fd051582dbcdecfb818b8 /tools/testing/selftests/kvm/lib/rbtree.c
parentselftests: kvm: fix potential issue with ELF loading (diff)
downloadlinux-dev-22721a56109940f15b673d0f01907b7a7202275e.tar.xz
linux-dev-22721a56109940f15b673d0f01907b7a7202275e.zip
KVM: selftests: Keep track of memslots more efficiently
The KVM selftest framework was using a simple list for keeping track of the memslots currently in use. This resulted in lookups and adding a single memslot being O(n), the later due to linear scanning of the existing memslot set to check for the presence of any conflicting entries. Before this change, benchmarking high count of memslots was more or less impossible as pretty much all the benchmark time was spent in the selftest framework code. We can simply use a rbtree for keeping track of both of gfn and hva. We don't need an interval tree for hva here as we can't have overlapping memslots because we allocate a completely new memory chunk for each new memslot. Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Message-Id: <b12749d47ee860468240cf027412c91b76dbe3db.1618253574.git.maciej.szmigiero@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/rbtree.c')
-rw-r--r--tools/testing/selftests/kvm/lib/rbtree.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/rbtree.c b/tools/testing/selftests/kvm/lib/rbtree.c
new file mode 100644
index 000000000000..a703f0194ea3
--- /dev/null
+++ b/tools/testing/selftests/kvm/lib/rbtree.c
@@ -0,0 +1 @@
+#include "../../../../lib/rbtree.c"