KFunc hid_bpf_release_context

v6.3

Release the previously allocated context @ctx

Definition

ctx: the HID-BPF context to release

void hid_bpf_release_context(struct hid_bpf_ctx *ctx)

Note

This kfunc releases the pointer passed in to it. There can be only one referenced pointer that can be passed in. All copies of the pointer being released are invalidated as a result of invoking this kfunc.

Note

This function may sleep, and therefore can only be used from sleepable programs. This is only true when not used from BPF_PROG_TYPE_SYSCALL programs.

Usage

Docs could be improved

This part of the docs is incomplete, contributions are very welcome

Program types

The following program types can make use of this kfunc:

• BPF_PROG_TYPE_LSM Until v6.11
• BPF_PROG_TYPE_TRACING Until v6.11
• BPF_PROG_TYPE_STRUCT_OPS Since v6.11
• BPF_PROG_TYPE_SYSCALL

Example

See hid_bpf_allocate_context for an example of how to use this kfunc.