Mutex and Spinlock locked together
From: Devesh Sharma <hidden>
Date: 2016-02-25 09:23:43
Hi In running kernel there are many places you can look to get the usage. But the bottom line is * You can take a spinlock under a mutex. e.g. mutex_lock--->spinlock-----critical section-----spinunlock--->mutex_unlock. * You can not take a mutex under a spinlock. e.g. spinlock--->mutex_lock -----critical section ....mutex_unlock---->spinunlock is not allowed. On Thu, Feb 25, 2016 at 11:37 AM, priyaranjan [off-list ref] wrote:
Hello All, Do you have any idea of a situation where we would need mutex and spinlock to be locked together? I think there is an example for this in Linux kernel. Can anyone help me? Regards, Priyaranjan _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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