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| author | Peter Zijlstra <peterz@infradead.org> | 2015-05-27 03:39:35 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2015-05-28 04:01:52 +0200 |
| commit | 0be964be0d45084245673c971d72a4b51690231d (patch) | |
| tree | c3d0f0497d325c28f344adda9c3305e75e550c60 /kernel/Kconfig.preempt | |
| parent | module, jump_label: Fix module locking (diff) | |
| download | linux-0be964be0d45084245673c971d72a4b51690231d.tar.xz linux-0be964be0d45084245673c971d72a4b51690231d.zip | |
module: Sanitize RCU usage and locking
Currently the RCU usage in module is an inconsistent mess of RCU and
RCU-sched, this is broken for CONFIG_PREEMPT where synchronize_rcu()
does not imply synchronize_sched().
Most usage sites use preempt_{dis,en}able() which is RCU-sched, but
(most of) the modification sites use synchronize_rcu(). With the
exception of the module bug list, which actually uses RCU.
Convert everything over to RCU-sched.
Furthermore add lockdep asserts to all sites, because it's not at all
clear to me the required locking is observed, esp. on exported
functions.
Cc: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/Kconfig.preempt')
0 files changed, 0 insertions, 0 deletions