linux-kernel - Re: [PATCH 4/5] staging: kpc2000: kpc_i2c: use %s with __func_

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Date:   Sat, 18 May 2019 03:28:39 +0000
From:   Geordan Neukum <gneukum1@...il.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] staging: kpc2000: kpc_i2c: use %s with __func__
 identifier in log messages

On Fri, May 17, 2019 at 07:58:19PM -0700, Joe Perches wrote:
> On Sat, 2019-05-18 at 02:29 +0000, Geordan Neukum wrote:
> > Throughout i2c_driver.c, there are instances where the log strings
> > contain the function's name hardcoded into the string. Instead, use the
> > printk conversion specifier '%s' with the __func__ preprocessor
> > identifier to more maintainably print the function's name.
>
> Might as well remove all of these and use the
> builtin ftrace function tracing mechanism instead.
>
> > diff --git a/drivers/staging/kpc2000/kpc_i2c/i2c_driver.c b/drivers/staging/kpc2000/kpc_i2c/i2c_driver.c
> []
> > @@ -142,7 +142,7 @@ static int i801_check_pre(struct i2c_device *priv)
> >  {
> >  	int status;
> >
> > -	dev_dbg(&priv->adapter.dev, "i801_check_pre\n");
> > +	dev_dbg(&priv->adapter.dev, "%s\n", __func__);
>
> etc...
>
Joe/All,

Acknowledged. I apologize for the inconvenience there -- I was
unfamiliar with that API until receiving your email. I'll hold on
additional uploads until other reviewers have had time to take a
look, but I do plan on leveraging the ftrace API instead of just
using __func__ and %s in my printk strings in the upcoming 'v2'
patchset.

Thanks for your feedback,
Geordan