Searched hist:"517 bbe19" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/kernel/bpf/ |
| H A D | ringbuf.c | 517bbe19 Tue Jun 30 01:15:00 CDT 2020 Andrii Nakryiko <andriin@fb.com> bpf: Enforce BPF ringbuf size to be the power of 2
BPF ringbuf assumes the size to be a multiple of page size and the power of
2 value. The latter is important to avoid division while calculating position
inside the ring buffer and using (N-1) mask instead. This patch fixes omission
to enforce power-of-2 size rule.
Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200630061500.1804799-1-andriin@fb.com
517bbe19 Tue Jun 30 01:15:00 CDT 2020 Andrii Nakryiko <andriin@fb.com> bpf: Enforce BPF ringbuf size to be the power of 2
BPF ringbuf assumes the size to be a multiple of page size and the power of
2 value. The latter is important to avoid division while calculating position
inside the ring buffer and using (N-1) mask instead. This patch fixes omission
to enforce power-of-2 size rule.
Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200630061500.1804799-1-andriin@fb.com
|