Messages in this thread |  | | | Date | Fri, 10 Dec 2010 22:14:42 +0100 | | From | Frederic Weisbecker <> | | Subject | Re: [PATCH 0/2 v2] rcu: Fix series of spurious RCU softirqs |
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(Adding Lai in Cc, I forgot my script doesn't handle Suggested-by: tags :)
On Fri, Dec 10, 2010 at 10:11:09PM +0100, Frederic Weisbecker wrote: > Hi, > > Following Lai's idea. > > An example of such series of spurious softirqs: > > http://tglx.de/~fweisbec/trace_rcu_softirq.txt > > In that example, the rcu softirq is raised at every tick > during 20 secs (was perhaps more, but the trace snapshot happened > during 20 secs). It happens randomly. > > Ah and it survived several hours of rcutorture (with rcu cpu stall > detection). > > Thanks. > > Frederic Weisbecker (2): > rcu: Stop chasing QS if another CPU did it for us > rcu: Keep gpnum and completed fields synchronized > > kernel/rcutree.c | 17 +++++++++++++++++ > 1 files changed, 17 insertions(+), 0 deletions(-) > > -- > 1.7.3.2 >
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