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| author |   Hou Tao <houtao1@huawei.com> | 2023-06-13 16:09:19 +0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2023-06-19 13:26:43 -0700 |
| commit | da77ae2b27ec73a644624a6d4bffc206e2df6bb8 (patch) | |
| tree | 497632c6c324836e12a66a25df993208f78d4cb2 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | selftests/bpf: Output the correct error code for pthread APIs (diff) | |
| download | linux-rng-da77ae2b27ec73a644624a6d4bffc206e2df6bb8.tar.xz linux-rng-da77ae2b27ec73a644624a6d4bffc206e2df6bb8.zip | |
selftests/bpf: Ensure that next_cpu() returns a valid CPU number
When using option -a without --prod-affinity or --cons-affinity, if the
number of producers and consumers is greater than the number of online
CPUs, the benchmark will fail to run as shown below:
$ getconf _NPROCESSORS_ONLN
8
$ ./bench bpf-loop -a -p9
Setting up benchmark 'bpf-loop'...
setting affinity to CPU #8 failed: -22
Fix it by returning the remainder of next_cpu divided by the number of
online CPUs in next_cpu().
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20230613080921.1623219-4-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions