Messages in this thread | | | Subject | Re: [PATCH 02/17] tracing/probes: Fix basic print type functions | From | Namhyung Kim <> | Date | Wed, 27 Nov 2013 23:39:28 +0900 |
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Hi Masami,
2013-11-27 (수), 20:57 +0900, Masami Hiramatsu: > (2013/11/27 15:19), Namhyung Kim wrote: > > > > -DEFINE_BASIC_PRINT_TYPE_FUNC(u8, "%x", unsigned int) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(u16, "%x", unsigned int) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(u32, "%lx", unsigned long) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(u64, "%llx", unsigned long long) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(s8, "%d", int) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(s16, "%d", int) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(s32, "%ld", long) > > -DEFINE_BASIC_PRINT_TYPE_FUNC(s64, "%lld", long long) > > +DEFINE_BASIC_PRINT_TYPE_FUNC(u8 , "%#x") > > +DEFINE_BASIC_PRINT_TYPE_FUNC(u16, "%#x") > > +DEFINE_BASIC_PRINT_TYPE_FUNC(u32, "%#x") > > +DEFINE_BASIC_PRINT_TYPE_FUNC(u64, "%#Lx") > > As I said I'd like to ask you to change it in %x. > > I just checked in Fedora18, but %#x is not supported on this glibc-2.17. > Since this format is exported via debugfs (format file), I think %x is > better.
Hmm.. but in most cases it's used for printf() not scanf(), right? In that case adding 0x prefix will help human readers a lot.
How about mandating the prefix with "0x%x"? This way it can be used both for printf() and scanf() IMHO.
Thanks, Namhyung
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