I have a kernel oops in a linux device driver I wrote. I want to determine which line is responsible for the oops. I have the following output, but I do not know how to interpret it. Does it mean my code crashed at the instruction at write_func + 0x63? How can I relate the value in EIP to my own function? What do the values after the backslash mean? [10991.880354] BUG: unable to handle kernel NULL
Saving/restoring FPU (including SIMD vector registers) state is more expensive than just integer GP register state. It's simply not worth the cost in most cases. In Linux kernel code, all you have to do is call kernel_fpu_begin() / kernel_fpu_end() around your code. This is what the RAID drivers do. See http://yarchive.net/comp/linux/kernel_fp.html. x86 doesn't have any future-proof way to save/re
I have an existing plot that was created with pandas like this: df['myvar'].plot(kind='bar') The y axis is format as float and I want to change the y axis to percentages. All of the solutions I found use ax.xyz syntax and I can only place code below the line above that creates the plot (I cannot add ax=ax to the line above.) How can I format the y axis as percentages without changing the line abov
The unit is "single cache access" for loads, stores, references and misses. Loads correspond to count of load instructions, executed by processors; same for stores. Misses is the count, how much loads and stores were unable to get their data loaded from the cache of this level: L1 data cache for L1-dcache- events; Last Level Cache (usually L2 or L3 depending on your platform) for cache- events. 31
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