Hi there. I plan to create a patch that puts additional ELF notes into core dumps of user processes produced by the kernel. These are desired in customer field work because 1) we often get a core without access to the original machine and much of this would remove significant delays and errors, and 2) most customers have poor system monitoring and some of this information is lost. Are there any objections, previous patches, or ideas?
Draft list of additions (all will be available in coredump_filter; some proposed as enabled by default [TBD]): 1. Equivalent output of /proc/PID/smaps. The benefits include an accurate view of process size, Rss for each VMA, knowing about non-readable VMAs, etc. 2. The value of /proc/PID/coredump_filter 3. The values of /proc/sys/kernel/[core_pattern|core_pipe_limit|core_uses_pid] 4. Timestamp for a few stages of core dump processing, such as the beginning and when writing metadata/notes completed 5. Memory statistics for the system and processes (similar to OOM killer output) 6. Equivalent output of `uname -a` 7. Equivalent output of /proc/cpuinfo 8. Process envars 9. Equivalent output of /proc/sys/vm/swappiness 10. Equivalent output of /proc/PID/cmdline 11. Equivalent output of /proc/PID/cwd 12. Equivalent output of lsof for this process 13. Equivalent output of /proc/PID/limits Thanks for your time. -- Kevin Grigorenko IBM WebSphere Foundation SWAT Team kevin.grigore...@us.ibm.com Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/kevgrig/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
