Re: [PATCH v3 4/7] tracing: Add synthetic event error logging

[Steven Rostedt]

On Tue, 13 Oct 2020 09:17:55 -0500
Tom Zanussi <zanussi@xxxxxxxxxx> wrote:

> +static int save_cmdstr(int argc, const char *name, const char **argv)
> +{
> +        struct seq_buf s;
> +	char *buf;
> +	int i;
> +
> +        buf = kzalloc(MAX_DYNEVENT_CMD_LEN, GFP_KERNEL);
> +        if (!buf)
> +                return -ENOMEM;
> +
> +        seq_buf_init(&s, buf, MAX_DYNEVENT_CMD_LEN);
> +
> +        seq_buf_puts(&s, name);
> +
> +        for (i = 0; i < argc; i++) {
> +                seq_buf_putc(&s, ' ');
> +                seq_buf_puts(&s, argv[i]);
> +        }
> +
> +        if (!seq_buf_buffer_left(&s)) {
> +                synth_err(SYNTH_ERR_CMD_TOO_LONG, 0);
> +                kfree(buf);
> +                return -EINVAL;
> +        }
> +        buf[s.len] = 0;
> +        last_cmd_set(buf);
> +
> +        kfree(buf);
> +        return 0;
> +}

I see you cut and pasted this ;-)

I fixed up the whitespace.

-- Steve