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authorFrederic Weisbecker <fweisbec@gmail.com>2013-04-20 15:27:08 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2013-04-22 20:16:04 +0200
commitff442c51f6543378cf23107c75b7949dc64a9119 (patch)
tree7c3cf3031f0bb0b8f0c9e8a170d17922b3bd1926 /fs
parentce831b38ca4920739a7a5b0c73b921da41f03718 (diff)
downloadop-kernel-dev-ff442c51f6543378cf23107c75b7949dc64a9119.zip
op-kernel-dev-ff442c51f6543378cf23107c75b7949dc64a9119.tar.gz
nohz: Re-evaluate the tick from the scheduler IPI
The scheduler IPI is used by the scheduler to kick full dynticks CPUs asynchronously when more than one task are running or when a new timer list timer is enqueued. This way the destination CPU can decide to restart the tick to handle this new situation. Now let's call that kick in the scheduler IPI. (Reusing the scheduler IPI rather than implementing a new IPI was suggested by Peter Zijlstra a while ago) Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
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