linux-kernel - Re: [PATCH v4 3/4] kdb: Simplify kdb

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Date:   Fri, 9 Jul 2021 14:37:24 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     kgdb-bugreport@...ts.sourceforge.net,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jason Wessel <jason.wessel@...driver.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 3/4] kdb: Simplify kdb_defcmd macro logic

Hi,

On Fri, Jul 9, 2021 at 3:43 AM Sumit Garg <sumit.garg@...aro.org> wrote:
>
> Switch to use a linked list instead of dynamic array which makes
> allocation of kdb macro and traversing the kdb macro commands list
> simpler.
>
> Suggested-by: Daniel Thompson <daniel.thompson@...aro.org>
> Signed-off-by: Sumit Garg <sumit.garg@...aro.org>
> ---
>  kernel/debug/kdb/kdb_main.c | 107 +++++++++++++++++++-----------------
>  1 file changed, 58 insertions(+), 49 deletions(-)
>
> diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
> index 6d9ff4048e7d..371983c03223 100644
> --- a/kernel/debug/kdb/kdb_main.c
> +++ b/kernel/debug/kdb/kdb_main.c
> @@ -654,13 +654,16 @@ static void kdb_cmderror(int diag)
>   *     zero for success, a kdb diagnostic if error
>   */
>  struct kdb_macro_t {
> -       int count;
> -       bool usable;
> -       kdbtab_t cmd;
> -       char **command;
> +       kdbtab_t cmd;                   /* Macro command */
> +       struct list_head statements;    /* Associated statement list */
>  };
> +
> +struct kdb_macro_statement_t {
> +       char *statement;                /* Statement name */

This is still not really the name. This is the actual statement,
right? Like it might contain "ftdump -1", right? It seems really weird
to call that the "name". You could drop the word "name", or change
this to "Statement text", or just totally drop the comment.

Other than that this looks good to me.

Reviewed-by: Douglas Anderson <dianders@...omium.org>