On Mon, 2012-05-14 at 07:40 +0200, Hiroshi Doyu wrote:
> Joe Perches <[email protected]> wrote @ Mon, 14 May 2012 07:25:55 +0200:
> > On Mon, 2012-05-14 at 07:00 +0200, Hiroshi Doyu wrote:
> > > Joe Perches <[email protected]> wrote @ Sat, 12 May 2012 17:31:35 +0200:
> > > > On Sat, 2012-05-12 at 12:52 +0200, Hiroshi Doyu wrote:
> > > > > An unclosed "if" statement in the MACRO seems a bit risky, but I don't
> > > > > have any better/simple solution for this, ATM. Is there any
> > > > > alternative?
> > > >
> > > > maybe something like:
> > > >
> > > > #define dev_ratelimited_level(dev, level, fmt, ...)
> > > > do {
> > > > static DEFINE_RATELIMIT_STATE(_rs,
> > > > \
> > > > DEFAULT_RATELIMIT_INTERVAL,
> > > > \
> > > > DEFAULT_RATELIMIT_BURST);
> > > > \
> > > > if (__ratelimit(&_rs))
> > > > \
> > > > dev_##level(fmt, ##__VA_ARGS__);
> > > > \
> > > > } while (0)
> > > >
> > > > #define dev_emerg_ratelimited(dev, fmt, ...)
> > > > \
> > > > dev_ratelimited_level(dev, emerg, fmt, ##__VA_ARGS__)
[...]
> > > > #define dev_dbg_ratelimited(dev, fmt, ...)
> > > > \
> > > > dev_ratelimited_level(dev, dbg, fmt, ##__VA_ARGS__)
> > >
> > > "dev" isn't handled separately with __VA_ARGS__, and failed to build
> > > as below:
> > >
> > > Example:
> > > dev_err_ratelimited(&pdev->dev, "%d\n", __LINE__);
> > >
> > > After preprocessded:
> > > do { ... if (___ratelimit(&_rs, __func__)) dev_err("%d\n", 18); }
> > > while (0);
> > >
> >
> > Sorry, I was just typing in the email client and
> > I missed the "dev" argument.
> >
> > Add "dev" to the dev_##level statement like:
> >
> > #define dev_ratelimited_level(dev, level, fmt, ...) \
> > do {
> > \
> > static DEFINE_RATELIMIT_STATE(_rs, \
> > DEFAULT_RATELIMIT_INTERVAL, \
> > DEFAULT_RATELIMIT_BURST); \
> > if (__ratelimit(&_rs)) \
> > dev_##level(dev, fmt, ##__VA_ARGS__); \
> > } while (0)
>
> Verified that the above works. Would you mind sending the complete version of
> this patch?
Hello Hiroshi.
It's your patch and your idea.
I think you should submit it.
You were just asking for alternatives or a bit
of guidance.
Maybe a better name for dev_ratelimited_level is
dev_level_ratelimited and the macro should be
#define dev_level_ratelimited(dev_level, dev, fmt, ...) \
do { \
static DEFINE_RATELIMIT_STATE(_rs, \
DEFAULT_RATELIMIT_INTERVAL, \
DEFAULT_RATELIMIT_BURST); \
if (__ratelimit(&_rs)) \
dev_level(dev, fmt, ##__VA_ARGS__); \
} while (0)
with uses like
#define dev_notice_ratelimited(dev, fmt, ...) \
dev_level_ratelimited(dev_notice, fmt, ##__VA_ARGS__)
Your choice though I think the last option above
may be better because it more closely follows the
style a dev_printk_ratelimited would use.
cheers, Joe
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