On Mon, Jan 26, 2015 at 09:37:01AM -0500, Steven Rostedt wrote: > On Mon, 26 Jan 2015 13:54:53 +0100 > Heiko Carstens <heiko.carst...@de.ibm.com> wrote: > > > gcc supports an s390 specific function attribute called "hotpatch". > > It can be used to specify the number of halfwords that shall be added before > > and after a function that shall be filled with nops for runtime patching. > > > > s390 will use the hotpatch attribute for function tracing, therefore > > introduce a nohotpatch define, depending on CC_USING_HOTPATCH, and add it > > to the existing notrace define. > > Are the two mutually exclusive? That is, can you have -pg and hotpatch > together? Reason why I ask is, if you have either -pg or hotpatch, then > we only need "no_instrument_function" or "hotpatch" in the notrace > define, not both. But I could be wrong.
Actually they should be mutually exclusive. I just merged them "just in case". So something like this #ifdef CC_USING_HOTPATCH #define notrace __attribute__((hotpatch(0,0))) #else #define notrace __attribute__((no_instrument_function)) #endif will work as well (just tested). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
