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| author | Paul E. McKenney <paulmck@us.ibm.com> | 2006-02-03 03:04:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-03 08:32:09 -0800 |
| commit | bb3b9cf122eb097ed9fe8ae50e1b0dbba9bbe447 (patch) | |
| tree | 4032cc19712ff78f532d2071f15a317e026da15b /include/linux/rcupdate.h | |
| parent | 9d9c0531c91755a90b646b27bb722d59ee3eb46d (diff) | |
| download | lwn-bb3b9cf122eb097ed9fe8ae50e1b0dbba9bbe447.tar.gz lwn-bb3b9cf122eb097ed9fe8ae50e1b0dbba9bbe447.zip | |
[PATCH] Fix comment to synchronize_sched()
Fix to broken comment to synchronize_rcu() noted by Keith Owens. Also add
sentence noting that synchronize_sched() and synchronize_rcu() are not
necessarily identical.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Keith Owens <kaos@sgi.com>
Cc: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/rcupdate.h')
| -rw-r--r-- | include/linux/rcupdate.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 981f9aa43353..b87aefa082e2 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -240,11 +240,14 @@ extern int rcu_pending(int cpu); * This means that all preempt_disable code sequences, including NMI and * hardware-interrupt handlers, in progress on entry will have completed * before this primitive returns. However, this does not guarantee that - * softirq handlers will have completed, since in some kernels + * softirq handlers will have completed, since in some kernels, these + * handlers can run in process context, and can block. * * This primitive provides the guarantees made by the (deprecated) * synchronize_kernel() API. In contrast, synchronize_rcu() only * guarantees that rcu_read_lock() sections will have completed. + * In "classic RCU", these two guarantees happen to be one and + * the same, but can differ in realtime RCU implementations. */ #define synchronize_sched() synchronize_rcu() |