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| author | Martynas Pumputis <m@lambda.lt> | 2019-01-31 10:19:33 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-13 14:02:36 -0700 |
| commit | 0ace0d28941b8dc91dac2edae754f48ac550ed40 (patch) | |
| tree | 6c02c16bf293a110fa671b0278289ecc72affc65 /kernel | |
| parent | 232bd90cf23844d7846bc57a049ec52c5d15269a (diff) | |
bpf, selftests: fix handling of sparse CPU allocations
[ Upstream commit 1bb54c4071f585ebef56ce8fdfe6026fa2cbcddd ]
Previously, bpf_num_possible_cpus() had a bug when calculating a
number of possible CPUs in the case of sparse CPU allocations, as
it was considering only the first range or element of
/sys/devices/system/cpu/possible.
E.g. in the case of "0,2-3" (CPU 1 is not available), the function
returned 1 instead of 3.
This patch fixes the function by making it parse all CPU ranges and
elements.
Signed-off-by: Martynas Pumputis <m@lambda.lt>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions