Re: [PATCH 00/10] implement DYNAMIC_DEBUG_RELATIVE_POINTERS

2019-05-06 Thread Segher Boessenkool
On Mon, May 06, 2019 at 09:34:55AM +0200, Rasmus Villemoes wrote: > I _am_ bending the C rules a bit with the "extern some_var; asm > volatile(".section some_section\nsome_var: blabla");". I should probably > ask on the gcc list whether this way of defining a local symbol in > inline assembly and r

Re: [PATCH 00/10] implement DYNAMIC_DEBUG_RELATIVE_POINTERS

2019-05-06 Thread Ingo Molnar
* Rasmus Villemoes wrote: > On 09/04/2019 23.25, Rasmus Villemoes wrote: > > > While refreshing these patches, which were orignally just targeted at > > x86-64, it occured to me that despite the implementation relying on > > inline asm, there's nothing x86 specific about it, and indeed it seem

[PATCH 00/10] implement DYNAMIC_DEBUG_RELATIVE_POINTERS

2019-04-09 Thread Rasmus Villemoes
Similar to CONFIG_GENERIC_BUG_RELATIVE_POINTERS that replaces (8 byte) const char* members by (4 byte) signed offsets from the bug_entry, this implements the similar thing for struct _ddebug, the descriptors underlying pr_debug() and friends in a CONFIG_DYNAMIC_DEBUG kernel. Since struct _ddebug h