The assignment of bc_moved in the conditional construct relies on the fact that in the case of hrtimer_start() invocation the return value is always 0. It took me a while to understand it.
We want to get rid of the hrtimer_start() return value. Open code the logic which makes it readable as well. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Preeti U Murthy <[email protected]> --- kernel/time/tick-broadcast-hrtimer.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) Index: tip/kernel/time/tick-broadcast-hrtimer.c =================================================================== --- tip.orig/kernel/time/tick-broadcast-hrtimer.c +++ tip/kernel/time/tick-broadcast-hrtimer.c @@ -66,9 +66,11 @@ static int bc_set_next(ktime_t expires, * hrtimer_{start/cancel} functions call into tracing, * calls to these functions must be bound within RCU_NONIDLE. */ - RCU_NONIDLE(bc_moved = (hrtimer_try_to_cancel(&bctimer) >= 0) ? - !hrtimer_start(&bctimer, expires, HRTIMER_MODE_ABS_PINNED) : - 0); + RCU_NONIDLE({ + bc_moved = hrtimer_try_to_cancel(&bctimer) >= 0; + if (bc_moved) + hrtimer_start(&bctimer, expires, + HRTIMER_MODE_ABS_PINNED);}); if (bc_moved) { /* Bind the "device" to the cpu */ bc->bound_on = smp_processor_id(); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
