probe_kernel_read is used when modifying function calls in ftrace_replace_code,
see arch/x86/kernel/ftrace.c. On x86, the code is replaced using int3 guard.
All functions are patched in parallel to reduce an expensive synchronization
of all CPUs. The result is that all affected functions are
probe_kernel_read is used when modifying function calls in ftrace_replace_code,
see arch/x86/kernel/ftrace.c. On x86, the code is replaced using int3 guard.
All functions are patched in parallel to reduce an expensive synchronization
of all CPUs. The result is that all affected functions are
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