drivers/perf: thunderx2_pmu: Change data in size tx2_uncore_event_update()

A LSL of 32 requires > 32b value to hold the result. However in
tx2_uncore_event_update(), 1UL << 32 currently only works as unsigned
long is 64b on a 64b system.

If we want to compile test for a 32b system, we need unsigned long long,
whose min size is 64b.

Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1633085326-156653-2-git-send-email-john.garry@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/thunderx2_pmu.c b/drivers/perf/thunderx2_pmu.c
index fc1a376..05378c0 100644 (file)
--- a/drivers/perf/thunderx2_pmu.c
+++ b/drivers/perf/thunderx2_pmu.c
@@ -487,7 +487,7 @@ static void tx2_uncore_event_update(struct perf_event *event)
                new = reg_readl(hwc->event_base);
                prev = local64_xchg(&hwc->prev_count, new);
                /* handles rollover of 32 bit counter */
-               delta = (u32)(((1UL << 32) - prev) + new);
+               delta = (u32)(((1ULL << 32) - prev) + new);
        }
 
        /* DMC event data_transfers granularity is 16 Bytes, convert it to 64 */