Hi Alexander,
On Sun, Mar 21, 2021 at 8:14 PM Alexander Lochmann
<i...@alexander-lochmann.de> wrote:
>
> diff --git a/Documentation/dev-tools/kcov.rst
> b/Documentation/dev-tools/kcov.rst
> index d2c4c27e1702..e105ffe6b6e3 100644
> --- a/Documentation/dev-tools/kcov.rst
> +++ b/Documentation/dev-tools/kcov.rst
> @@ -127,6 +127,86 @@ That is, a parent process opens /sys/kernel/debug/kcov,
> enables trace mode,
> mmaps coverage buffer and then forks child processes in a loop. Child
> processes
> only need to enable coverage (disable happens automatically on thread end).
>
> +If someone is interested in a set of executed PCs, and does not care about
> +execution order, he or she can advise KCOV to do so:
Please mention explicitly that KCOV_INIT_UNIQUE should be used for
that, i.e. readers of the example shouldn't need to read every line to
figure it out.
> + #define KCOV_INIT_TRACE _IOR('c', 1, unsigned long)
Trace is not used in the example.
> + /* KCOV was initialized, but recording of unique PCs hasn't been
> chosen yet. */
> + KCOV_MODE_INIT_UNQIUE = 2,
Typo? It isn't used?
PS: not sure why I was Cc'd, but I hope that helps.
Cheers,
Miguel
