Messages in this thread | | | Date | Tue, 19 Jun 2012 14:52:51 -0700 | From | Frank Rowand <> | Subject | Re: [RFC][RT][PATCH] mm: Do not use stop_machine() for __zone_pcp_udpate() for CONFIG_PREEMPT_RT_FULL |
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On 06/19/12 12:46, Frank Rowand wrote: > Adding to the distribution list: the author of the patch that included > the call to stop_machine() (commit 112067f0905b2de862c607ee62411cf47d2fe5c4). > > On 06/19/12 11:32, Aaditya Kumar wrote: >> The code path of __zone_pcp_update() has following locks, which in >> CONFIG_PREEMPT_RT_FULL=y are rt-mutex. >> - pa_lock locked by cpu_lock_irqsave() >> - zone->lock locked by free_pcppages_bulk() >> >> Since __zone_pcp_update() is called from stop_machine(), so with
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... and just for the record, adding the author (Shaohua Li) did not work, I got an email reject from Intel.
-Frank
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