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Red Hat Bugzilla – Attachment 156940 Details for
Bug 242868
[FOCUS] Kernbench hangs smaller memory configurations
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rostdet.patch
rostdet.patch (text/plain), 922 bytes, created by
IBM Bug Proxy
on 2007-06-13 23:30:44 UTC
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Description:
rostdet.patch
Filename:
MIME Type:
Creator:
IBM Bug Proxy
Created:
2007-06-13 23:30:44 UTC
Size:
922 bytes
patch
obsolete
>Index: 2.6-rt/kernel/softirq.c >=================================================================== >--- 2.6-rt.orig/kernel/softirq.c >+++ 2.6-rt/kernel/softirq.c >@@ -425,9 +425,25 @@ void do_softirq_from_hardirq(void) > p_flags = current->flags & PF_HARDIRQ; > current->flags &= ~PF_HARDIRQ; > current->flags |= PF_SOFTIRQ; >+#ifdef CONFIG_PREEMPT_HARDIRQS >+ { >+ cpumask_t save_cpus_allowed, cpus_allowed; >+ >+ /* Don't let ourselves migrate */ >+ save_cpus_allowed = current->cpus_allowed; >+ cpu_set(smp_processor_id(), cpus_allowed); >+ set_cpus_allowed(current, cpus_allowed); >+#endif > > ___do_softirq(1); > >+#ifdef CONFIG_PREEMPT_HARDIRQS >+ /* Put back our original mask. */ >+ WARN_ON(!cpus_equal(current->cpus_allowed, cpus_allowed)); >+ set_cpus_allowed(current, save_cpus_allowed); >+ } >+#endif >+ > #ifndef CONFIG_PREEMPT_SOFTIRQS > trace_softirq_exit(); > #endif
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