heads up for beagleBone users and folks dabbling with 3.8-based kernels (most likely for ARM platforms):
this patch seems to fit the current 3.8-based BeagleBone kernels, meaning it should be possible to create an RT-PREEMPT kernel for the BB - Michael Anfang der weitergeleiteten Nachricht: > Von: Sebastian Andrzej Siewior <[email protected]> > Betreff: [ANNOUNCE] 3.8.13-rt14 > Datum: 11. Juli 2013 09:38:58 MESZ > An: linux-rt-users <[email protected]> > Kopie: LKML <[email protected]>, Thomas Gleixner > <[email protected]>, [email protected], John Kacur <[email protected]> > > Dear RT Folks, > > I'm pleased to announce the 3.8.13-rt14 release. > > changes since v3.8.13-rt13: > - added a patch from Uwe Kleine-König to fix the UP breakage introduced by > the recent s/sbin spinlocks/raw_spin_lock/ change. > - added a fix for a livelock of workqueue vs ata-piix. Found by Carsten > Emde, patch proposed by Thomas Gleixner. > > The delta patch against v3.8.13-rt13 is appended below and can be found here: > > > https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/incr/patch-3.8.13-rt13-rt14.patch.xz > > The RT patch against 3.8.13 can be found here: > > > https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/patch-3.8.13-rt14.patch.xz > > The split quilt queue is available at: > > > https://www.kernel.org/pub/linux/kernel/projects/rt/3.8/patches-3.8.13-rt14.tar.xz > > Sebastian > > diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h > index ddfd46a..becd7a6 100644 > --- a/include/linux/list_bl.h > +++ b/include/linux/list_bl.h > @@ -131,8 +131,10 @@ static inline void hlist_bl_lock(struct hlist_bl_head *b) > bit_spin_lock(0, (unsigned long *)b); > #else > raw_spin_lock(&b->lock); > +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) > __set_bit(0, (unsigned long *)b); > #endif > +#endif > } > > static inline void hlist_bl_unlock(struct hlist_bl_head *b) > @@ -140,7 +142,9 @@ static inline void hlist_bl_unlock(struct hlist_bl_head > *b) > #ifndef CONFIG_PREEMPT_RT_BASE > __bit_spin_unlock(0, (unsigned long *)b); > #else > +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK) > __clear_bit(0, (unsigned long *)b); > +#endif > raw_spin_unlock(&b->lock); > #endif > } > diff --git a/kernel/workqueue.c b/kernel/workqueue.c > index 0d49ddf..99855b3 100644 > --- a/kernel/workqueue.c > +++ b/kernel/workqueue.c > @@ -42,6 +42,7 @@ > #include <linux/lockdep.h> > #include <linux/idr.h> > #include <linux/locallock.h> > +#include <linux/delay.h> > > #include "workqueue_sched.h" > > @@ -1157,7 +1158,7 @@ static int try_to_grab_pending(struct work_struct > *work, bool is_dwork, > local_unlock_irqrestore(pendingb_lock, *flags); > if (work_is_canceling(work)) > return -ENOENT; > - cpu_relax(); > + cpu_chill(); > return -EAGAIN; > } > > diff --git a/localversion-rt b/localversion-rt > index 9f7d0bd..08b3e75 100644 > --- a/localversion-rt > +++ b/localversion-rt > @@ -1 +1 @@ > --rt13 > +-rt14 > -- > To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
