With sched_clock() noinstr, provide a noinstr implementation of
local_clock().
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230126151323.760767043@infradead.org