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authorJohn Garry <john.garry@huawei.com>2021-10-01 13:48:45 +0300
committerWill Deacon <will@kernel.org>2021-10-04 15:13:11 +0300
commit78cac393b4642eb5936d9c0685acd50d8370648f (patch)
treebe24ec37efe071baaff2183aeda927eed36be1e1 /drivers/perf/thunderx2_pmu.c
parent16cc4af286aae85859ee39e25d21f3d910f8175d (diff)
downloadlinux-78cac393b4642eb5936d9c0685acd50d8370648f.tar.xz
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>
Diffstat (limited to 'drivers/perf/thunderx2_pmu.c')
-rw-r--r--drivers/perf/thunderx2_pmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/perf/thunderx2_pmu.c b/drivers/perf/thunderx2_pmu.c
index fc1a376ee906..05378c0fd8f3 100644
--- 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 */