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Re: [dm-devel] [PATCH] sched: make struct task_struct::state 32-bit



On Tue, Sep 03, 2019 at 12:02:38AM +0100, Valentin Schneider wrote:
> struct task_struct {
> 	struct thread_info         thread_info;          /*     0    24 */
> 	volatile int               state;                /*    24     4 */
> 
> 	/* XXX 4 bytes hole, try to pack */
> 
> 	void *                     stack;                /*    32     8 */
> 
> Though seeing as this is also the boundary of the randomized layout we can't
> really do much better without changing the boundary itself. So much for
> cacheline use :/

Cacheline use of task_struct is pretty hopeless because of all the ifdefs.


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