Date: Sun, 12 Mar 2006 16:25:07 +0530 From: "Pranav Peshwe" <pranavpeshwe@gmail.com> To: freebsd-hackers@freebsd.org Subject: Doubts about PICKUP_GIANT() and mtx_lock(&Giant). Message-ID: <cdfd7d6d0603120255x3039efa2w68c9217f5706e78c@mail.gmail.com>
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Hello,
What is effectively the difference between PICKUP/DROP_GIANT and
mtx_lock/unlock(&Giant) ? From the macro expansion, i surmise that
PICKUP/DROP_GIANT deals with recursion in Giant locking.Is this correct ? i=
s
this the only difference ? What will happen if i mix the usage of
PICKUP/DROP_GIANT and mtx_lock/unlock(&Giant) ?
Also,is there any hard and fast rule prescribing which method of taking the
Giant should be used where in the kernel ?
TIA.
Regards,
Pranav
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