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| author | Joerg Roedel <jroedel@suse.de> | 2021-06-10 10:31:20 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-06-10 10:33:14 +0200 |
| commit | d6a9642bd673dd0bb2839274fe83eaa979b9207e (patch) | |
| tree | c9c599a41b28a97735894d6d3f35a5b65238a52b /drivers/iommu | |
| parent | iommu/vt-d: No need to typecast (diff) | |
| download | linux-d6a9642bd673dd0bb2839274fe83eaa979b9207e.tar.xz linux-d6a9642bd673dd0bb2839274fe83eaa979b9207e.zip | |
iommu/vt-d: Fix linker error on 32-bit
A recent commit broke the build on 32-bit x86. The linker throws these
messages:
ld: drivers/iommu/intel/perf.o: in function `dmar_latency_snapshot':
perf.c:(.text+0x40c): undefined reference to `__udivdi3'
ld: perf.c:(.text+0x458): undefined reference to `__udivdi3'
The reason are the 64-bit divides in dmar_latency_snapshot(). Use the
div_u64() helper function for those.
Fixes: 55ee5e67a59a ("iommu/vt-d: Add common code for dmar latency performance monitors")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210610083120.29224-1-joro@8bytes.org
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel/perf.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/iommu/intel/perf.c b/drivers/iommu/intel/perf.c index faaa96dda437..73b7ec705552 100644 --- a/drivers/iommu/intel/perf.c +++ b/drivers/iommu/intel/perf.c @@ -141,14 +141,14 @@ int dmar_latency_snapshot(struct intel_iommu *iommu, char *str, size_t size) if (val == UINT_MAX) val = 0; else - val /= 1000; + val = div_u64(val, 1000); break; case COUNTS_MAX: - val /= 1000; + val = div_u64(val, 1000); break; case COUNTS_SUM: if (lstat[i].samples) - val /= (lstat[i].samples * 1000); + val = div_u64(val, (lstat[i].samples * 1000)); else val = 0; break; |