2d26e7442b
Added 7 I/O accounting fields to Context (rchar, wchar, syscr, syscw, read_bytes, write_bytes, cancelled_write_bytes) and new ProcIo ContextHandle that outputs them in Linux key=value format: rchar: 0 wchar: 0 syscr: 0 syscw: 0 read_bytes: 0 write_bytes: 0 cancelled_write_bytes: 0 Cross-referenced with Linux 7.1 fs/proc/base.c do_task_io_accounting(). All values start at 0 and will be incremented as the syscall interface is extended to track I/O operations.