From mboxrd@z Thu Jan  1 00:00:00 1970
From: Simon Glass <sjg@chromium.org>
Date: Mon, 28 Dec 2020 20:31:07 -0700
Subject: [PATCH v2 1/2] trace: select TIMER_EARLY to avoid infinite
 recursion
In-Reply-To: <20201222062236.27372-1-pragnesh.patel@sifive.com>
References: <20201222062236.27372-1-pragnesh.patel@sifive.com>
Message-ID: <CAPnjgZ0Cdgf1JfVb5gKPwfk0gq4d5rWaxdsB55U=xRxXezKBJQ@mail.gmail.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

On Mon, 21 Dec 2020 at 23:23, Pragnesh Patel <pragnesh.patel@sifive.com> wrote:
>
> When tracing functions is enabled this adds calls to
> __cyg_profile_func_enter() and __cyg_profile_func_exit() to the traced
> functions.
>
> __cyg_profile_func_enter() and __cyg_profile_func_exit() invoke
> timer_get_us() to record the entry and exit time.
>
> initr_dm() will make gd->dm_root = NULL and gd->timer = NULL, so
> timer_get_us() -> get_ticks() -> dm_timer_init() will lead to an
> indefinite recursion.
>
> So select TIMER_EARLY when tracing got enabled.
>
> Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
> ---
>
> Changes in v2:
> - new patch
>
>  lib/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Simon Glass <sjg@chromium.org>