| Unreliable Guide To Hacking The Linux Kernel | ||
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This global variable (really a macro) contains a pointer to the current task structure, so is only valid in user context. For example, when a process makes a system call, this will point to the task structure of the calling process. It is not NULL in interrupt context.
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| kmalloc()/kfree() include/linux/slab.h | Up | udelay()/mdelay() include/asm/delay.h include/linux/delay.h |