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| author | Steven Rostedt <rostedt@goodmis.org> | 2008-02-29 20:46:50 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-29 20:46:50 +0300 |
| commit | 2232c2d8e0a6a31061dec311f3d1cf7624bc14f1 (patch) | |
| tree | 1d90ec0b8bd4e3c154e386f005ef596ee25fa53f /kernel/softlockup.c | |
| parent | c0f4133b8f70769bc8dda977feb9a29109d6ccca (diff) | |
| download | linux-2232c2d8e0a6a31061dec311f3d1cf7624bc14f1.tar.xz | |
rcu: add support for dynamic ticks and preempt rcu
The PREEMPT-RCU can get stuck if a CPU goes idle and NO_HZ is set. The
idle CPU will not progress the RCU through its grace period and a
synchronize_rcu my get stuck. Without this patch I have a box that will
not boot when PREEMPT_RCU and NO_HZ are set. That same box boots fine
with this patch.
This patch comes from the -rt kernel where it has been tested for
several months.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/softlockup.c')
0 files changed, 0 insertions, 0 deletions