li nux wrote:
> Sorry, couldn't get what you want to say.
> Can you please elaborate.
A "recursive lock" is one that can be taken multiple times by the same
owner. So:
lock_kernel();
lock_kernel();
unlock_kernel();
unlock_kernel();
is perfectly ok. The lock_kernel() code detects that the calling thread
already owns the lock and just increments current->lock_depth.
Under linux locks are non-recursive EXCEPT for lock_kernel() (aka the BLK
or "big kernel lock")
See lib/kernel_lock.c for more details.
-Mitch
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
