Pin vCPUs to a host physical CPUs (pCPUs) in dirty_log_perf_test and optionally pin the main application thread to a physical cpu if provided. All tests based on perf_test_util framework can take advantage of it if needed. While at it, I changed atoi() to atoi_paranoid(), atoi_positive, atoi_non_negative() in other tests, sorted command line options alphabetically in dirty_log_perf_test, and added break between -e and -g which was missed in original commit when -e was introduced. v6: - Updated the shortlog of Patch 5. - Changed formatting of help text of -c in dirty_log_perf_test v5: https://lore.kernel.org/lkml/20221010220538.1154054-1-vipinsh@xxxxxxxxxx/ - Added atoi_postive() and atoi_non_negative() APIs for string parsing. - Using sched_getaffinity() to verify if a pCPU is allowed or not. - Changed Suggested-by to add only person came up with original idea of pinning. - Updated strings and commit messages. v4: https://lore.kernel.org/lkml/20221006171133.372359-1-vipinsh@xxxxxxxxxx/ - Moved boolean to check vCPUs pinning from perf_test_vcpu_args to perf_test_args. - Changed assert statements to make error more descriptive. - Modified break statement between 'e' and 'g' option in v3 by not copying dirty_log_manual_caps = 0 to 'e'. v3: https://lore.kernel.org/lkml/20220826184500.1940077-1-vipinsh@xxxxxxxxxx - Moved atoi_paranoid() to test_util.c and replaced all atoi() usage with atoi_paranoid() - Sorted command line options alphabetically. - Instead of creating a vcpu thread on a specific pcpu the thread will migrate to the provided pcpu after its creation. - Decoupled -e and -g option. v2: https://lore.kernel.org/lkml/20220819210737.763135-1-vipinsh@xxxxxxxxxx/ - Removed -d option. - One cpu list passed as option, cpus for vcpus, followed by application thread cpu. - Added paranoid cousin of atoi(). v1: https://lore.kernel.org/lkml/20220817152956.4056410-1-vipinsh@xxxxxxxxxx Vipin Sharma (5): KVM: selftests: Add missing break between -e and -g option in dirty_log_perf_test KVM: selftests: Put command line options in alphabetical order in dirty_log_perf_test KVM: selftests: Add atoi_paranoid() to catch errors missed by atoi() KVM: selftests: Add atoi_positive() and atoi_non_negative() for input validation KVM: selftests: Allowing running dirty_log_perf_test on specific CPUs .../selftests/kvm/aarch64/arch_timer.c | 25 ++----- .../testing/selftests/kvm/aarch64/vgic_irq.c | 6 +- .../selftests/kvm/access_tracking_perf_test.c | 2 +- .../selftests/kvm/demand_paging_test.c | 4 +- .../selftests/kvm/dirty_log_perf_test.c | 61 +++++++++++------ .../selftests/kvm/include/perf_test_util.h | 6 ++ .../testing/selftests/kvm/include/test_util.h | 4 ++ .../selftests/kvm/kvm_page_table_test.c | 4 +- .../selftests/kvm/lib/perf_test_util.c | 65 ++++++++++++++++++- tools/testing/selftests/kvm/lib/test_util.c | 35 ++++++++++ .../selftests/kvm/max_guest_memory_test.c | 7 +- .../kvm/memslot_modification_stress_test.c | 6 +- .../testing/selftests/kvm/memslot_perf_test.c | 24 ++----- .../selftests/kvm/set_memory_region_test.c | 2 +- .../selftests/kvm/x86_64/nx_huge_pages_test.c | 4 +- 15 files changed, 177 insertions(+), 78 deletions(-) -- 2.38.0.135.g90850a2211-goog
