Variable set via -g are also indirectly set by -e option by omitting
break statement. Set them explicitly so that movement of switch-case
statements does not unintentionally break features.

No functional change intended.

Signed-off-by: Vipin Sharma <vipinsh@google.com>
---
 tools/testing/selftests/kvm/dirty_log_perf_test.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index f99e39a672d3..a03db7f9f4c0 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -411,6 +411,8 @@ int main(int argc, char *argv[])
 		case 'e':
 			/* 'e' is for evil. */
 			run_vcpus_while_disabling_dirty_logging = true;
+			dirty_log_manual_caps = 0;
+			break;
 		case 'g':
 			dirty_log_manual_caps = 0;
 			break;
-- 
2.37.2.672.g94769d06f0-goog

On Fri, Aug 26, 2022 at 11:45 AM Vipin Sharma <vipinsh@google.com> wrote:
>
> Variable set via -g are also indirectly set by -e option by omitting
> break statement. Set them explicitly so that movement of switch-case
> statements does not unintentionally break features.
>
> No functional change intended.
>
> Signed-off-by: Vipin Sharma <vipinsh@google.com>
> ---
>  tools/testing/selftests/kvm/dirty_log_perf_test.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
> index f99e39a672d3..a03db7f9f4c0 100644
> --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
> +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
> @@ -411,6 +411,8 @@ int main(int argc, char *argv[])
>                 case 'e':
>                         /* 'e' is for evil. */
>                         run_vcpus_while_disabling_dirty_logging = true;
> +                       dirty_log_manual_caps = 0;
> +                       break;

@Sean, I hope you intentionally didn't write a break between -e and -g
when you created the patch and it is not just a missed thing :)


>                 case 'g':
>                         dirty_log_manual_caps = 0;
>                         break;
> --
> 2.37.2.672.g94769d06f0-goog
>

On Fri, Aug 26, 2022 at 02:12:49PM -0700, Vipin Sharma wrote:
> On Fri, Aug 26, 2022 at 11:45 AM Vipin Sharma <vipinsh@google.com> wrote:
> >
> > Variable set via -g are also indirectly set by -e option by omitting
> > break statement. Set them explicitly so that movement of switch-case
> > statements does not unintentionally break features.
> >
> > No functional change intended.
> >
> > Signed-off-by: Vipin Sharma <vipinsh@google.com>
> > ---
> >  tools/testing/selftests/kvm/dirty_log_perf_test.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
> > index f99e39a672d3..a03db7f9f4c0 100644
> > --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
> > +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
> > @@ -411,6 +411,8 @@ int main(int argc, char *argv[])
> >                 case 'e':
> >                         /* 'e' is for evil. */
> >                         run_vcpus_while_disabling_dirty_logging = true;
> > +                       dirty_log_manual_caps = 0;
> > +                       break;
> 
> @Sean, I hope you intentionally didn't write a break between -e and -g
> when you created the patch and it is not just a missed thing :)

I'm pretty sure the missing break here is by accident. If it was on
purpose I would expect Sean (especially) to have called it out the
subtle change in the commit message and probably add a comment here.
Also I can't think of any reason why
run_vcpus_while_disabling_dirty_logging=true would require
dirty_log_manual_caps=0.

Can you change this patch to just add a break and add a fixes tag to the
commit message?

Fixes: cfe12e64b065 ("KVM: selftests: Add an option to run vCPUs while disabling dirty logging")


> 
> 
> >                 case 'g':
> >                         dirty_log_manual_caps = 0;
> >                         break;
> > --
> > 2.37.2.672.g94769d06f0-goog
> >