On Tue, Jan 23, 2018 at 04:25:59PM +0100, Peter Zijlstra wrote: > I've observed GCC generate: > > sym: > NOP/JMP 1f (static_branch) > JMP 2f > 1: /* crud */ > JMP 3f > 2: /* other crud */ > > 3: RETQ > > > This means we need to follow unconditional jumps; be conservative and > only follow if its a unique jump. > > (I've not yet figured out which CONFIG option is responsible for this, > a normal defconfig build does not generate crap like this) > > Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Any chance we can just add a compiler barrier to the assertion macro and avoid all this grow_static_blocks() mess? It seems a bit... fragile. -- Josh
