Re: [PATCH v2 1/3] drm: Extract drm_debug.[hc]

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Quoting Haneen Mohammed (2017-10-12 03:32:53)
> diff --git a/drivers/gpu/drm/drm_debug.c b/drivers/gpu/drm/drm_debug.c
> new file mode 100644
> index 0000000..a79593f
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_debug.c
> @@ -0,0 +1,75 @@
> +/*
> + * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
> + * All Rights Reserved.
> + *
> + * Author Rickard E. (Rik) Faith <faith@xxxxxxxxxxx>
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <drm/drm_debug.h>
> +#include <drm/drmP.h>
> +
> +#define DRM_PRINTK_FMT "[" DRM_NAME ":%s]%s %pV"
> +
> +void drm_dev_printk(const struct device *dev, const char *level,
> +                   unsigned int category, const char *function_name,
> +                   const char *prefix, const char *format, ...)
> +{
> +       struct va_format vaf;
> +       va_list args;
> +
> +       if (category != DRM_UT_NONE && !(drm_debug & category))
> +               return;
> +
> +       va_start(args, format);
> +       vaf.fmt = format;
> +       vaf.va = &args;
> +
> +       if (dev)
> +               dev_printk(level, dev, DRM_PRINTK_FMT, function_name, prefix,
> +                          &vaf);
> +       else
> +               printk("%s" DRM_PRINTK_FMT, level, function_name, prefix, &vaf);
> +
> +       va_end(args);
> +}
> +EXPORT_SYMBOL(drm_dev_printk);
> +
> +void drm_printk(const char *level, unsigned int category,
> +               const char *format, ...)
> +{
> +       struct va_format vaf;
> +       va_list args;
> +
> +       if (category != DRM_UT_NONE && !(drm_debug & category))
> +               return;
> +
> +       va_start(args, format);
> +       vaf.fmt = format;
> +       vaf.va = &args;
> +
> +       printk("%s" "[" DRM_NAME ":%ps]%s %pV",
> +              level, __builtin_return_address(0),
> +              strcmp(level, KERN_ERR) == 0 ? " *ERROR*" : "", &vaf);
> +
> +       va_end(args);
> +}
> +EXPORT_SYMBOL(drm_printk);

We already have drm_print.c, currently used to house drm_printf and the
drm_printer. It might be a bit confusing to have drm_printk and
drm_printf next to each other, but less confusing that calling user
error messages drm_debug.c.
-Chris
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