Hi AngeloGioacchino
Thanks for you suggestion.
On Wed, 2023-03-22 at 14:49 +0100, AngeloGioacchino Del Regno wrote:
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>
> Il 22/03/23 10:46, Yunfei Dong ha scritto:
> > Add parameter mtk_vcodec_dbg to open each codec log.
> > Add parameter mtk_v4l2_dbg_level to open each instance log
> > according to
> > the parameter value.
> >
> > Signed-off-by: Yunfei Dong <yunfei.dong@xxxxxxxxxxxx>
> > ---
> > .../mediatek/vcodec/mtk_vcodec_dbgfs.c | 2 ++
> > .../mediatek/vcodec/mtk_vcodec_util.c | 8 ++++++
> > .../mediatek/vcodec/mtk_vcodec_util.h | 25
> > ++++++++++++++++---
> > 3 files changed, 32 insertions(+), 3 deletions(-)
> >
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
> > b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
> > index fb9edd379af5..b5093e4e4aa2 100644
> > --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
> > +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dbgfs.c
> > @@ -20,6 +20,8 @@ void mtk_vcodec_dbgfs_init(struct mtk_vcodec_dev
> > *vcodec_dev)
> > IS_ERR(vcodec_dev->dbgfs.vcodec_root));
> >
> > vcodec_root = vcodec_dev->dbgfs.vcodec_root;
> > + debugfs_create_x32("mtk_v4l2_dbg_level", 0644, vcodec_root,
> > &mtk_v4l2_dbg_level);
> > + debugfs_create_x32("mtk_vcodec_dbg", 0644, vcodec_root,
> > &mtk_vcodec_dbg);
> > }
> > EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_init);
> >
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
> > b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
> > index ace78c4b5b9e..f214e6f67005 100644
> > --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
> > +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.c
> > @@ -13,6 +13,14 @@
> > #include "mtk_vcodec_drv.h"
> > #include "mtk_vcodec_util.h"
> >
> > +#if defined(CONFIG_DEBUG_FS)
> > +int mtk_vcodec_dbg;
> > +EXPORT_SYMBOL(mtk_vcodec_dbg);
> > +
> > +int mtk_v4l2_dbg_level;
> > +EXPORT_SYMBOL(mtk_v4l2_dbg_level);
> > +#endif
> > +
> > void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx
> > *data,
> > unsigned int reg_idx)
> > {
> > diff --git
> > a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
> > b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
> > index 71956627a0e2..938f03cab3c9 100644
> > --- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
> > +++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_util.h
> > @@ -35,15 +35,34 @@ struct mtk_vcodec_dev;
> > pr_err("[MTK_VCODEC][ERROR][%d]: " fmt "\n", \
> > ((struct mtk_vcodec_ctx *)(h)->ctx)->id, ##args)
> >
> > +#if defined(CONFIG_DEBUG_FS)
> > +extern int mtk_v4l2_dbg_level;
> > +extern int mtk_vcodec_dbg;
> >
> > -#define mtk_v4l2_debug(level, fmt, args...) pr_debug(fmt, ##args)
> > +#define mtk_v4l2_debug(level, fmt,
> > args...) \
> > + do
> > { \
> > + if (mtk_v4l2_dbg_level >=
> > level) \
> > + pr_info("[MTK_V4L2] level=%d %s(),%d: " fmt
> > "\n", \
>
> These shall still be *debug* and not *info*, even if you're
> controlling the
> log level from debugfs, as these are anyway debugging prints which
> can be
> automatically optimized out for a kernel build with *no debug at
> all*.
>
I can change it from *info* to *debug*.
> The loglevel control is a commodity that should be meant to avoid too
> much
> spam for readability and/or selectively enable "components" logging,
> because
> then there's also the tracing framework providing maximum verbosity.
>
I can't understand here very well. Whether you mean that just need to
print useful debug information, no need to add so many prefix
"[MTK_V4L2] level=%d %s(),"?
> Besides, I'd be happy if this finally becomes dev_dbg instead of
> pr_debug.
>
Need to change so many log to use dev_dbg, pr_debug should be also ok.
Maybe I can change it with dev_dbg in the future.
> Regards,
> Angelo
>
Best Regards,
Yunfei Dong
>
