netdev - Re: [PATCH iwl-next v2] i40e: add trace events related to SFP module IOCTLs

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Date: Thu, 21 Dec 2023 16:35:19 +0100
From: Simon Horman <horms@...nel.org>
To: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, anthony.l.nguyen@...el.com,
	netdev@...r.kernel.org,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: Re: [PATCH iwl-next v2] i40e: add trace events related to SFP module
 IOCTLs

On Wed, Dec 20, 2023 at 06:38:37PM +0100, Aleksandr Loktionov wrote:
> Add trace events related to SFP module IOCTLs for troubleshooting.
> 
> Example:
>         echo "i40e_*" >/sys/kernel/tracing/set_ftrace_filter
>         echo "i40e_ioctl*" >/sys/kernel/tracing/events/i40e/filter
>         echo 1  >/sys/kernel/tracing/tracing_on
>         echo 1  >/sys/kernel/tracing/events/i40e/enable
>         ...
>         cat     /sys/kernel/tracing/trace
> 
> Riewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
> ---
> v1->v2 applied to proper git branch
> ---
>  drivers/net/ethernet/intel/i40e/i40e_ethtool.c |  5 +++++
>  drivers/net/ethernet/intel/i40e/i40e_trace.h   | 18 ++++++++++++++++++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> index c841779..bdf2b6b 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
> @@ -1074,6 +1074,7 @@ static int i40e_get_link_ksettings(struct net_device *netdev,
>  	ethtool_link_ksettings_zero_link_mode(ks, supported);
>  	ethtool_link_ksettings_zero_link_mode(ks, advertising);
>  
> +	i40e_trace(ioctl_get_link_ksettings, pf, hw_link_info->link_info);
>  	if (link_up)
>  		i40e_get_settings_link_up(hw, ks, netdev, pf);
>  	else

Hi Aleksandr,

I think that i40e_trace.h needs to be included in i40e_ethtool.c
as part of this patch.

 .../i40e_ethtool.c: In function ‘i40e_get_link_ksettings’:
 .../i40e_ethtool.c:1077:9: error: implicit declaration of function ‘i40e_trace’ [-Werror=implicit-function-declaration]
 1077 |         i40e_trace(ioctl_get_link_ksettings, pf, hw_link_info->link_info);
      |         ^~~~~~~~~~

...

Flagged by gcc-13 W=1 build

...

-- 
pw-bot: changes-requested