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scx: Allow calling scx kfuncs from BPF_PROG_TYPE_SYSCALL #172
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We'll want to be able to issue BPF_PROG_RUN calls in order to synchronously call into the kernel from user space scheduling components. The most natural prog type for this seems to be BPF_PROG_TYPE_SYSCALL, which is a very safe program type. Let's allow invoking the core kfuncs from this program type as well. Signed-off-by: David Vernet <void@manifault.com>
Now that we can invoke scx kfuncs inside of a BPF_PROG_TYPE_SYSCALL program, let's add some selftests that validate the behavior. Signed-off-by: David Vernet <void@manifault.com>
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We'll want to be able to issue BPF_PROG_RUN calls in order to
synchronously call into the kernel from user space scheduling
components. The most natural prog type for this seems to be
BPF_PROG_TYPE_SYSCALL, which is a very safe program type. Let's allow
invoking the core kfuncs from this program type as well.
Signed-off-by: David Vernet void@manifault.com