search for: stopmachin

...healthy cpus will be blocked infinitely by one dead cpu. This patch allows stop_machine to return -EBUSY with some printk messages if any of stop_machine's threads cannot start running on its target cpu. v2: - remove fix for warning since it will be fixed upcoming typesafe patches - make stopmachine_timeout from secs to msecs, and set default to 200 msec (since v1's arbitrary 5 sec is too long) - allow disabling timeout by setting the stopmachine_timeout to 0 Signed-off-by: Hidetoshi Seto <seto.hidetoshi at jp.fujitsu.com> --- kernel/stop_machine.c | 54 +++++++++++++++++++++...

...healthy cpus will be blocked infinitely by one dead cpu. This patch allows stop_machine to return -EBUSY with some printk messages if any of stop_machine's threads cannot start running on its target cpu. v2: - remove fix for warning since it will be fixed upcoming typesafe patches - make stopmachine_timeout from secs to msecs, and set default to 200 msec (since v1's arbitrary 5 sec is too long) - allow disabling timeout by setting the stopmachine_timeout to 0 Signed-off-by: Hidetoshi Seto <seto.hidetoshi at jp.fujitsu.com> --- kernel/stop_machine.c | 54 +++++++++++++++++++++...

...patch allows stop_machine to return -EBUSY with some printk messages if any of stop_machine's threads cannot start running on its target cpu in time. You can enable this timeout via sysctl. v4: - move extern into linux/stop_machine.h and add include of the header to kernel/sysctl.c. Now stopmachine_timeout is available only on smp. v3: - set stopmachine_timeout default to 0 (= never timeout) v2: - remove fix for warning since it will be fixed upcoming typesafe patches - make stopmachine_timeout from secs to msecs - allow disabling timeout by setting the stopmachine_timeout to 0...

...patch allows stop_machine to return -EBUSY with some printk messages if any of stop_machine's threads cannot start running on its target cpu in time. You can enable this timeout via sysctl. v4: - move extern into linux/stop_machine.h and add include of the header to kernel/sysctl.c. Now stopmachine_timeout is available only on smp. v3: - set stopmachine_timeout default to 0 (= never timeout) v2: - remove fix for warning since it will be fixed upcoming typesafe patches - make stopmachine_timeout from secs to msecs - allow disabling timeout by setting the stopmachine_timeout to 0...

On Monday 14 July 2008 21:51:25 Christian Borntraeger wrote: > Am Montag, 14. Juli 2008 schrieb Hidetoshi Seto: > > + /* Wait all others come to life */ > > + while (cpus_weight(prepared_cpus) != num_online_cpus() - 1) { > > + if (time_is_before_jiffies(limit)) > > + goto timeout; > > + cpu_relax(); > > + } > > + > > Hmm. I think this could

On Monday 14 July 2008 21:51:25 Christian Borntraeger wrote: > Am Montag, 14. Juli 2008 schrieb Hidetoshi Seto: > > + /* Wait all others come to life */ > > + while (cpus_weight(prepared_cpus) != num_online_cpus() - 1) { > > + if (time_is_before_jiffies(limit)) > > + goto timeout; > > + cpu_relax(); > > + } > > + > > Hmm. I think this could

....com.au> --- kernel/stop_machine.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) Index: kvm/kernel/stop_machine.c =================================================================== --- kvm.orig/kernel/stop_machine.c +++ kvm/kernel/stop_machine.c @@ -62,8 +62,7 @@ static int stopmachine(void *cpu) * help our sisters onto their CPUs. */ if (!prepared && !irqs_disabled) yield(); - else - cpu_relax(); + cpu_relax(); } /* Ack: we are exiting. */ @@ -106,8 +105,10 @@ static int stop_machine(void) } /* Wait for them all to come to life. */ - while (at...

....com.au> --- kernel/stop_machine.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) Index: kvm/kernel/stop_machine.c =================================================================== --- kvm.orig/kernel/stop_machine.c +++ kvm/kernel/stop_machine.c @@ -62,8 +62,7 @@ static int stopmachine(void *cpu) * help our sisters onto their CPUs. */ if (!prepared && !irqs_disabled) yield(); - else - cpu_relax(); + cpu_relax(); } /* Ack: we are exiting. */ @@ -106,8 +105,10 @@ static int stop_machine(void) } /* Wait for them all to come to life. */ - while (at...