swh:1:snp:77163734605b0ec556b01d897b7bb4a7e30d46b6
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Tip revision: c56eb8fb6dccb83d9fe62fd4dc00c834de9bc470 authored by Linus Torvalds on 18 January 2011, 23:14:02 UTC
Linux 2.6.38-rc1
Tip revision: c56eb8f
printk-formats.txt
If variable is of Type,		use printk format specifier:
---------------------------------------------------------
		int			%d or %x
		unsigned int		%u or %x
		long			%ld or %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 a config option for its size (e.g., sector_t,
blkcnt_t, phys_addr_t, resource_size_t) or is architecture-dependent
for its size (e.g., tcflag_t), use a format specifier of its largest
possible type and explicitly cast to it.  Example:

	printk("test: sector number/total blocks: %llu/%llu\n",
		(unsigned long long)sector, (unsigned long long)blockcount);

Reminder: sizeof() result is of type size_t.

Thank you for your cooperation and attention.


By Randy Dunlap <rdunlap@xenotime.net>
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