linux-kernel - Re: [PATCH v3 3/5] kdb: Remove special case logic from kdb

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Message-ID: <CAD=FV=W44zXesz8b8Z05_k7JjPW8D9z8fGT3GiGFSmSLw85zMQ@mail.gmail.com>
Date:   Wed, 16 Oct 2019 21:10:22 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Daniel Thompson <daniel.thompson@...aro.org>
Cc:     Jason Wessel <jason.wessel@...driver.com>,
        kgdb-bugreport@...ts.sourceforge.net,
        LKML <linux-kernel@...r.kernel.org>,
        Patch Tracking <patches@...aro.org>
Subject: Re: [PATCH v3 3/5] kdb: Remove special case logic from kdb_read()

Hi,

On Mon, Oct 14, 2019 at 8:46 AM Daniel Thompson
<daniel.thompson@...aro.org> wrote:
>
> @@ -91,12 +92,17 @@ kdb_bt1(struct task_struct *p, unsigned long mask,
>         kdb_ps1(p);
>         kdb_show_stack(p, NULL);
>         if (btaprompt) {
> -               kdb_getstr(buffer, sizeof(buffer),
> -                          "Enter <q> to end, <cr> to continue:");
> -               if (buffer[0] == 'q') {
> -                       kdb_printf("\n");
> +               kdb_printf("Enter <q> to end, <cr> or <space> to continue:");
> +               ch = kdb_getchar();
> +               while (!strchr("\r\n q", ch))
> +                       ch = kdb_getchar();

nit: above 3 lines would be better with "do while", AKA:

do {
  ch = kdb_getchar();
} while (!strchr("\r\n q", ch));


> @@ -50,14 +50,14 @@ static int kgdb_transition_check(char *buffer)
>  }
>
>  /*
> - * kdb_read_handle_escape
> + * kdb_handle_escape

Optional nit: while you're touching this comment, you could make it
kerneldoc complaint.


> @@ -152,7 +158,7 @@ static int kdb_read_get_key(char *buffer, size_t bufsize)
>                                 return '\e';
>
>                         *ped++ = key;
> -                       key = kdb_read_handle_escape(escape_data,
> +                       key = kdb_handle_escape(escape_data,
>                                                      ped - escape_data);

nit: indentation no longer lines up for the "ped - escape_data" line.

Nothing here is terribly important, thus:

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