Messages in this thread | | | Subject | Re: [PATCH v3] timer: implement lockdep deadlock detection | From | Peter Zijlstra <> | Date | Thu, 29 Jan 2009 14:38:07 +0100 |
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On Wed, 2009-01-28 at 19:06 +0100, Johannes Berg wrote:
> +/* > + * All the indirection here is required to build the > + * "<file>:<line>" string and the pointer to it. > + */ > +#define ___TIMER_INITIALIZER(_fn, _exp, _dat, _kn) \ > + ____TIMER_INITIALIZER(_fn, _exp, _dat, (_kn), &(_kn)) > +#define __TIMER_INITIALIZER(_fn, _exp, _dat, _f, _c, _l) \ > + ___TIMER_INITIALIZER(_fn, _exp, _dat, _f # _c # _l) > +#define _TIMER_INITIALIZER(_fn, _exp, _dat, _f, _l) \ > + __TIMER_INITIALIZER(_fn, _exp, _dat, _f, :, _l) > +#define TIMER_INITIALIZER(_function, _expires, _data) \ > + _TIMER_INITIALIZER(_function, _expires, _data, __FILE__, __LINE__)
The regular way to write that would be:
#define __STR(foo) #foo #define STR(foo) __STR(foo)
__FILE__ ":" STR(__LINE__)
I'm sure I saw that stringify thing somewhere in the kernel before, but can't find it. I recently added it to lockdep.c, maybe we should add it to kernel.h ?
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