From: Arnd Bergmann <a...@arndb.de> Date: Sat, 16 Apr 2016 22:29:33 +0200
> Two new functions in bpf contain a cast from a 'u64' to a > pointer. This works on 64-bit architectures but causes a warning > on all 32-bit architectures: > > kernel/trace/bpf_trace.c: In function 'bpf_perf_event_output_tp': > kernel/trace/bpf_trace.c:350:13: error: cast to pointer from integer of > different size [-Werror=int-to-pointer-cast] > u64 ctx = *(long *)r1; > > This changes the cast to first convert the u64 argument into a uintptr_t, > which is guaranteed to be the same size as a pointer. > > Signed-off-by: Arnd Bergmann <a...@arndb.de> > Fixes: 9940d67c93b5 ("bpf: support bpf_get_stackid() and > bpf_perf_event_output() in tracepoint programs") Applied.