In answer to Andrew: > How do we communicate this new design/feature to our users? > Documentation/cpusets.txt, perhaps? Documentation/cpu-hotplug.txt? > git-log? ;)
Patch "[PATCH 1/1] V4: hotplug cpu: migrate a task within its cpuset" may warrant an addition to the documentation. I would propose this note in cpu-hotplug.txt. Diffed against 2.6.23-rc3 Signed-off-by: Cliff Wickman <[EMAIL PROTECTED]> --- Documentation/cpu-hotplug.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: linus.070821/Documentation/cpu-hotplug.txt =================================================================== --- linus.070821.orig/Documentation/cpu-hotplug.txt +++ linus.070821/Documentation/cpu-hotplug.txt @@ -220,7 +220,9 @@ A: The following happen, listed in no pa CPU_DOWN_PREPARE or CPU_DOWN_PREPARE_FROZEN, depending on whether or not the CPU is being offlined while tasks are frozen due to a suspend operation in progress -- All process is migrated away from this outgoing CPU to a new CPU +- All processes are migrated away from this outgoing CPU to new CPUs. + The new CPU is chosen from each process' current cpuset, which may be + a subset of all online CPUs. - All interrupts targeted to this CPU is migrated to a new CPU - timers/bottom half/task lets are also migrated to a new CPU - Once all services are migrated, kernel calls an arch specific routine -- Cliff Wickman Silicon Graphics, Inc. [EMAIL PROTECTED] (651) 683-3824 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/