[PATCH v3 0/4] dirty_log_perf_test cpu pinning and some goodies

[Vipin Sharma <vipinsh@google.com>]

Pin vcpus to a host physical cpus 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() in other tests, sorted
command line options alphabetically, and made switch case logic of -e
option less error prone to code changes by adding break and decoupling
it from -g.

v3:
- 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@google.com/
- 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@google.com

Vipin Sharma (4):
  KVM: selftests: Explicitly set variables based on options 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: Run dirty_log_perf_test on specific cpus

 .../selftests/kvm/aarch64/arch_timer.c        |  8 +--
 .../testing/selftests/kvm/aarch64/vgic_irq.c  |  6 +-
 .../selftests/kvm/access_tracking_perf_test.c |  2 +-
 .../selftests/kvm/demand_paging_test.c        |  2 +-
 .../selftests/kvm/dirty_log_perf_test.c       | 65 +++++++++++++------
 .../selftests/kvm/include/perf_test_util.h    |  4 ++
 .../testing/selftests/kvm/include/test_util.h |  2 +
 .../selftests/kvm/kvm_page_table_test.c       |  2 +-
 .../selftests/kvm/lib/perf_test_util.c        | 62 +++++++++++++++++-
 tools/testing/selftests/kvm/lib/test_util.c   | 14 ++++
 .../selftests/kvm/max_guest_memory_test.c     |  6 +-
 .../kvm/memslot_modification_stress_test.c    |  4 +-
 .../testing/selftests/kvm/memslot_perf_test.c | 10 +--
 .../selftests/kvm/set_memory_region_test.c    |  2 +-
 .../selftests/kvm/x86_64/nx_huge_pages_test.c |  4 +-
 15 files changed, 148 insertions(+), 45 deletions(-)

-- 
2.37.2.672.g94769d06f0-goog