3bf0fcd754
After commit 4fc096a99e ("KVM: Raise the maximum number of user memslots")
set_memory_region_test may take too long, reports are that the default
timeout value we have (120s) may not be enough even on a physical host.
Speed things up a bit by throwing away vm_userspace_mem_region_add() usage
from test_add_max_memory_regions(), we don't really need to do the majority
of the stuff it does for the sake of this test.
On my AMD EPYC 7401P, # time ./set_memory_region_test
pre-patch:
Testing KVM_RUN with zero added memory regions
Allowed number of memory slots: 32764
Adding slots 0..32763, each memory region with 2048K size
Testing MOVE of in-use region, 10 loops
Testing DELETE of in-use region, 10 loops
real 0m44.917s
user 0m7.416s
sys 0m34.601s
post-patch:
Testing KVM_RUN with zero added memory regions
Allowed number of memory slots: 32764
Adding slots 0..32763, each memory region with 2048K size
Testing MOVE of in-use region, 10 loops
Testing DELETE of in-use region, 10 loops
real 0m20.714s
user 0m0.109s
sys 0m18.359s
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210426130121.758229-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.