Re: [Qemu-devel] [PATCH v1 5/7] tests/migration-test: don't spam the logs when we fail

[Laurent Vivier <lvivier@redhat.com>]

On 12/07/2019 13:18, Alex Bennée wrote:
> Quite often the information about which test failed is hidden by the
> wall of repeated failures for each page. Stop outputting the error
> after 10 bad pages and just summarise the total damage at the end.
> 
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> ---
>  tests/migration-test.c | 19 ++++++++++++-------
>  1 file changed, 12 insertions(+), 7 deletions(-)
> 
> diff --git a/tests/migration-test.c b/tests/migration-test.c
> index b6434628e1c..ce041f80c2a 100644
> --- a/tests/migration-test.c
> +++ b/tests/migration-test.c
> @@ -308,7 +308,7 @@ static void check_guests_ram(QTestState *who)
>      uint8_t first_byte;
>      uint8_t last_byte;
>      bool hit_edge = false;
> -    bool bad = false;
> +    int bad = 0;
>  
>      qtest_memread(who, start_address, &first_byte, 1);
>      last_byte = first_byte;
> @@ -327,15 +327,20 @@ static void check_guests_ram(QTestState *who)
>                  hit_edge = true;
>                  last_byte = b;
>              } else {
> -                fprintf(stderr, "Memory content inconsistency at %x"
> -                                " first_byte = %x last_byte = %x current = %x"
> -                                " hit_edge = %x\n",
> -                                address, first_byte, last_byte, b, hit_edge);
> -                bad = true;
> +                bad++;
> +                if (bad <= 10) {
> +                    fprintf(stderr, "Memory content inconsistency at %x"
> +                            " first_byte = %x last_byte = %x current = %x"
> +                            " hit_edge = %x\n",
> +                            address, first_byte, last_byte, b, hit_edge);
> +                }
>              }
>          }
>      }
> -    g_assert_false(bad);
> +    if (bad >= 10) {
> +        fprintf(stderr, "and in another %d pages", bad);

"bad - 10" as you have already displayed 10 errors.

Thanks,
Laurent