Messages in this thread | | | Date | Sat, 06 Sep 2008 16:50:36 -0700 | From | Mike Travis <> | Subject | [RFC 00/13] smp: reduce stack requirements for genapic send_IPI_mask functions |
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[Note: all these changes require some more testing but I wanted to solicit comments before then, hence the "RFC" in the subject line. -thanks! Mike]
* Change the genapic->send_IPI_mask function to accept cpumask_t pointer.
* Add for_each_online_cpu_mask_nr to eliminate a common case of needing a temporary on-stack cpumask_t variable.
* Change send_IPI_mask function in xen to use for_each_online_cpu_mask_nr().
* Add cpumask_ptr operations.
* Add get_cpumask_var debug operations.
* Add global allbutself PER_CPUMASK variable.
* Remove as many on-stack cpumask_t variables in kernel/sched.c
* Remove as many on-stack cpumask_t variables in acpi-cpufreq.c
* Remove as many on-stack cpumask_t variables in io_apic.c
Applies to linux-2.6.tip/master.
Signed-off-by: Mike Travis <travis@sgi.com> ---
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