Lennart Poettering
36b5119a0c
This reworks is_kernel_thread() a bit. Instead of checking whether /proc/$pid/cmdline is entirely empty we now parse the 'flags' field from /proc/$pid/stat and check the PF_KTHREAD flag, which directly encodes whether something is a kernel thread. Why all this? With current kernels userspace processes can set their command line to empty too (through PR_SET_MM_ARG_START and friends), and could potentially confuse us. Hence, let's use a more reliable way to detect kernels like this.
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