diff options
Diffstat (limited to 'Documentation/admin-guide/cgroup-v2.rst')
| -rw-r--r-- | Documentation/admin-guide/cgroup-v2.rst | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index babbe04c8d37..4d8c27eca96b 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -1226,7 +1226,7 @@ PAGE_SIZE multiple when read back. Note that all fields in this file are hierarchical and the file modified event can be generated due to an event down the - hierarchy. For for the local events at the cgroup level see + hierarchy. For the local events at the cgroup level see memory.events.local. low @@ -2170,19 +2170,19 @@ existing device files. Cgroup v2 device controller has no interface files and is implemented on top of cgroup BPF. To control access to device files, a user may -create bpf programs of the BPF_CGROUP_DEVICE type and attach them -to cgroups. On an attempt to access a device file, corresponding -BPF programs will be executed, and depending on the return value -the attempt will succeed or fail with -EPERM. - -A BPF_CGROUP_DEVICE program takes a pointer to the bpf_cgroup_dev_ctx -structure, which describes the device access attempt: access type -(mknod/read/write) and device (type, major and minor numbers). -If the program returns 0, the attempt fails with -EPERM, otherwise -it succeeds. - -An example of BPF_CGROUP_DEVICE program may be found in the kernel -source tree in the tools/testing/selftests/bpf/progs/dev_cgroup.c file. +create bpf programs of type BPF_PROG_TYPE_CGROUP_DEVICE and attach +them to cgroups with BPF_CGROUP_DEVICE flag. On an attempt to access a +device file, corresponding BPF programs will be executed, and depending +on the return value the attempt will succeed or fail with -EPERM. + +A BPF_PROG_TYPE_CGROUP_DEVICE program takes a pointer to the +bpf_cgroup_dev_ctx structure, which describes the device access attempt: +access type (mknod/read/write) and device (type, major and minor numbers). +If the program returns 0, the attempt fails with -EPERM, otherwise it +succeeds. + +An example of BPF_PROG_TYPE_CGROUP_DEVICE program may be found in +tools/testing/selftests/bpf/progs/dev_cgroup.c in the kernel source tree. RDMA |