21 Aug, 2010
1 commit
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Because list_empty() does not dereference any RCU-protected pointers, and
further does not pass such pointers to the caller (so that the caller
does not dereference them either), it is safe to use list_empty() on
RCU-protected lists. There is no need for a list_empty_rcu(). This
commit adds a comment stating this explicitly.Requested-by: Andrew Morton
Signed-off-by: Paul E. McKenney
20 Aug, 2010
1 commit
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This avoids warnings from missing __rcu annotations
in the rculist implementation, making it possible to
use the same lists in both RCU and non-RCU cases.We can add rculist annotations later, together with
lockdep support for rculist, which is missing as well,
but that may involve changing all the users.Signed-off-by: Arnd Bergmann
Signed-off-by: Paul E. McKenney
Cc: Pavel Emelyanov
Cc: Sukadev Bhattiprolu
Reviewed-by: Josh Triplett
04 May, 2010
1 commit
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Add hlist_for_each_entry_rcu_bh() and
hlist_for_each_entry_continue_rcu_bh() macros, and use them in
ipv6_get_ifaddr(), if6_get_first() and if6_get_next() to fix lockdeps
warnings.Signed-off-by: Eric Dumazet
Reviewed-by: "Paul E. McKenney"
Signed-off-by: David S. Miller
21 Mar, 2010
1 commit
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Convert from reader/writer lock to RCU and spinlock for addrconf
hash list.Adds an additional helper macro for hlist_for_each_entry_continue_rcu
to handle the continue case.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
01 Mar, 2010
1 commit
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Conflicts:
drivers/firmware/iscsi_ibft.c
25 Feb, 2010
1 commit
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The theory is that use of bare rcu_dereference() is more prone
to error than use of the RCU list-traversal primitives.
Therefore, disable lockdep RCU read-side critical-section
checking in these primitives for the time being. Once all of
the rcu_dereference() uses have been dealt with, it may be time
to re-enable lockdep checking for the RCU list-traversal
primitives.Signed-off-by: Paul E. McKenney
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference:
Signed-off-by: Ingo Molnar
23 Feb, 2010
1 commit
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Many usages of seq_file use RCU protected lists, so non RCU
iterators will not work safely.Signed-off-by: Stephen Hemminger
Signed-off-by: David S. Miller
11 Nov, 2009
1 commit
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This adds an RCU macro for continuing search, useful for some
network devices like vlan.Signed-off-by: Stephen Hemminger
Acked-by: Eric Dumazet
Signed-off-by: David S. Miller
15 Apr, 2009
1 commit
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I've run into the situation where I need to use list_first_entry with
rcu-guarded list. This patch introduces this.Also simplify list_for_each_entry_rcu() to use new list_entry_rcu()
instead of list_entry().Signed-off-by: Jiri Pirko
Reviewed-by: Paul E. McKenney
Cc: dipankar@in.ibm.com
LKML-Reference:
Signed-off-by: Ingo Molnar
15 Aug, 2008
1 commit
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All of the in-tree uses of list_for_each_rcu() have been converted to
list_for_each_entry_rcu(), so list_for_each_rcu() can now be removed.Signed-off-by: Paul E. McKenney
Signed-off-by: Ingo Molnar
29 Jul, 2008
1 commit
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Introduce list_del_init_rcu() and document it.
Signed-off-by: Andrea Arcangeli
Acked-by: Linus Torvalds
Cc: "Paul E. McKenney"
Cc: Ingo Molnar
Cc: Christoph Lameter
Cc: Jack Steiner
Cc: Robin Holt
Cc: Nick Piggin
Cc: Peter Zijlstra
Cc: Kanoj Sarcar
Cc: Roland Dreier
Cc: Steve Wise
Cc: Avi Kivity
Cc: Hugh Dickins
Cc: Rusty Russell
Cc: Anthony Liguori
Cc: Chris Wright
Cc: Marcelo Tosatti
Cc: Eric Dumazet
Cc: "Paul E. McKenney"
Cc: Izik Eidus
Cc: Anthony Liguori
Cc: Rik van Riel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
19 May, 2008
3 commits
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RCU list iterators: should prefetch ever be optimised out with no
side-effects, the current version will lose the barrier completely.Pointed-out-by: Linus Torvalds
Signed-off-by: Paul E. McKenney
Signed-off-by: Ingo Molnar -
Make almost all list mutation primitives use rcu_assign_pointer().
The main point of this being readability improvement.
Signed-off-by: Franck Bui-Huu
Cc: "Paul E. McKenney"
Cc: Josh Triplett
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar -
Move rcu-protected lists from list.h into a new header file rculist.h.
This is done because list are a very used primitive structure all over the
kernel and it's currently impossible to include other header files in this
list.h without creating some circular dependencies.For example, list.h implements rcu-protected list and uses rcu_dereference()
without including rcupdate.h. It actually compiles because users of
rcu_dereference() are macros. Others RCU functions could be used too but
aren't probably because of this.Therefore this patch creates rculist.h which includes rcupdates without to
many changes/troubles.Signed-off-by: Franck Bui-Huu
Acked-by: Paul E. McKenney
Acked-by: Josh Triplett
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar
