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TASK_RUNNING is a C preprocessor #define macro (not a type or enum), so it is not captured in BPF Type Format. Modern bpftrace uses BTF/ vmlinux for kernel type resolution rather than actually preprocessing header files — so #include <linux/sched.h> no longer expands macros into the bpftrace script's symbol table. Replaced the macro with its literal numeric value - TASK_RUNNING has been 0 since the dawn of time in the Linux scheduler.
Kernel block IO function used (kprobe) has been removed and stable tracepoints now exist with new functions - use those.
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