Messages in this thread | | | Date | Thu, 23 Oct 2008 17:21:47 +0530 | From | David John <> | Subject | Re: How do I printk <type> correctly? |
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Alexey Dobriyan wrote: > If variable is of Type use printk format specifier. > --------------------------------------------------------- > int %d or %x > unsigned int %u or %x > long %ld ot %lx > unsigned long %lu or %lx > long long %lld or %llx > unsigned long long %llu or %llx > size_t %zu or %zx > ssize_t %zd or %zx > > Raw pointer value SHOULD be printed with %p. > > u64 SHOULD be printed with %llu/%llx, (unsigned long long): > > printk("%llu", (unsigned long long)u64_var); > > s64 SHOULD be printed with %lld/%llx, (long long): > > printk("%lld", (long long)s64_var); > > If type is dependent on config option (sector_t), use format specifier > of biggest type and explicitly cast to it. > > Reminder: sizeof() result is of type size_t. > > Thank you for your cooperation. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
Useful list, but I think there are more format specifiers available with printk though.
David.
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