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Message-ID: <ec04aa8b-5c2a-28be-a32b-6d85a17d2f21@akamai.com>
Date: Thu, 19 Dec 2019 17:10:49 -0500
From: Jason Baron <jbaron@...mai.com>
To: Huang Shijie <sjhuang@...vatar.ai>
Cc: linux-kernel@...r.kernel.org, 1537577747@...com,
Joe Perches <joe@...ches.com>
Subject: Re: [PATCH v5] lib/dynamic_debug: make better dynamic log output
On 12/19/19 2:47 AM, Huang Shijie wrote:
> The driver strings, device name and net device name are not changed for
> the driver's dynamic log output. But the dynamic_emit_prefix() which contains
> the function names may change when the function names are changed.
>
> So the patch makes the better dynamic log output.
Another point here is that currently the output precisely matches the
non-dynamic debug counterpart strings if not prefix is emitted. So that
changes with this patch. I think its nice to say that the output is the
same as the non dynamic debug output except it may have an optional
prefix....
>
> Signed-off-by: Huang Shijie <sjhuang@...vatar.ai>
> ---
> v4 --> v5:
> remove the redundant whitespce in the tail.
> ---
> lib/dynamic_debug.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
> index c60409138e13..bfc3b386d603 100644
> --- a/lib/dynamic_debug.c
> +++ b/lib/dynamic_debug.c
> @@ -589,9 +589,9 @@ void __dynamic_dev_dbg(struct _ddebug *descriptor,
> } else {
> char buf[PREFIX_SIZE];
>
> - dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s%s %s: %pV",
> - dynamic_emit_prefix(descriptor, buf),
> + dev_printk_emit(LOGLEVEL_DEBUG, dev, "%s %s %s%pV",
> dev_driver_string(dev), dev_name(dev),
> + dynamic_emit_prefix(descriptor, buf),
> &vaf);
> }
>
> @@ -619,11 +619,11 @@ void __dynamic_netdev_dbg(struct _ddebug *descriptor,
> char buf[PREFIX_SIZE];
>
> dev_printk_emit(LOGLEVEL_DEBUG, dev->dev.parent,
> - "%s%s %s %s%s: %pV",
> - dynamic_emit_prefix(descriptor, buf),
> + "%s %s %s %s %s%pV",
> dev_driver_string(dev->dev.parent),
> dev_name(dev->dev.parent),
> netdev_name(dev), netdev_reg_state(dev),
> + dynamic_emit_prefix(descriptor, buf),
> &vaf);
> } else if (dev) {
> printk(KERN_DEBUG "%s%s: %pV", netdev_name(dev),
> @@ -655,11 +655,11 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
> char buf[PREFIX_SIZE];
>
> dev_printk_emit(LOGLEVEL_DEBUG, ibdev->dev.parent,
> - "%s%s %s %s: %pV",
> - dynamic_emit_prefix(descriptor, buf),
> + "%s %s %s %s%pV",
> dev_driver_string(ibdev->dev.parent),
> dev_name(ibdev->dev.parent),
> dev_name(&ibdev->dev),
> + dynamic_emit_prefix(descriptor, buf),
> &vaf);
> } else if (ibdev) {
> printk(KERN_DEBUG "%s: %pV", dev_name(&ibdev->dev), &vaf);
>
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