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Add memory dump to the firmware crash data file which is provided to user space via devcoredump interface. This makes it easier for firmware engineers to debug firmware crashes. Due to increased memory consumption the memory dump is disabled by default. To enable it make sure that bit 3 is set in coredump_mask module parameter: modprobe ath10k_core coredump_mask=0xffffffff When RAMDUMP is enabled a buffer for the dump is allocated with vmalloc during device probe. The actual memory layout is different in hardware versions and the layouts are defined in coredump.c. The memory is split to regions and, to get even finegrained control of what to copy, the region can split to smaller sections as not all registers are readable (which could cause the whole system to stall). Signed-off-by: Alan Liu <alanliu@qca.qualcomm.com> [kvalo@qca.qualcomm.com: refactoring and cleanup] Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.