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percpu_freelist.c
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Xu Kuohai authoredpcpu_freelist_populate() initializes nr_elems / num_possible_cpus() + 1 free nodes for some CPUs, and then possibly one CPU with fewer nodes, followed by remaining cpus with 0 nodes. For example, when nr_elems == 256 and num_possible_cpus() == 32, CPU 0~27 each gets 9 free nodes, CPU 28 gets 4 free nodes, CPU 29~31 get 0 free nodes, while in fact each CPU should get 8 nodes equally. This patch initializes nr_elems / num_possible_cpus() free nodes for each CPU firstly, then allocates the remaining free nodes by one for each CPU until no free nodes left. Fixes: e19494ed ("bpf: introduce percpu_freelist") Signed-off-by:
Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20221110122128.105214-1-xukuohai@huawei.comXu Kuohai authoredpcpu_freelist_populate() initializes nr_elems / num_possible_cpus() + 1 free nodes for some CPUs, and then possibly one CPU with fewer nodes, followed by remaining cpus with 0 nodes. For example, when nr_elems == 256 and num_possible_cpus() == 32, CPU 0~27 each gets 9 free nodes, CPU 28 gets 4 free nodes, CPU 29~31 get 0 free nodes, while in fact each CPU should get 8 nodes equally. This patch initializes nr_elems / num_possible_cpus() free nodes for each CPU firstly, then allocates the remaining free nodes by one for each CPU until no free nodes left. Fixes: e19494ed ("bpf: introduce percpu_freelist") Signed-off-by:
Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20221110122128.105214-1-xukuohai@huawei.com
ioctl_macros 338 B
# socket ioctls allowed to unprivileged apps
define(`unpriv_sock_ioctls', `
{
# all socket ioctls except the Mac address SIOCGIFHWADDR 0x8927
0x8900-0x8926 0x8928-0x89ff
# all wireless extensions ioctls except get/set essid
# IOCSIWESSID 0x8B1A SIOCGIWESSID 0x8B1B
0x8B00-0x8B09 0x8B1C-0x8BFF
# commonly used TTY ioctls
0x5411 0x5451
}')