Messages in this thread |  | | Date | Fri, 04 Apr 2008 18:24:47 -0700 | From | Mike Travis <> | Subject | [PATCH 0/4] x86: add cpus_scnprintf function v2 |
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* Add a new cpus_scnprintf and a sysctl flag to control how cpumask sets are printed. The default (1) is to use the current cpumask_scnprintf. If kernel.compat_cpus_printf is '0', then cpulist_scnprintf is used. In addition, a nodes_scnprintf function is provided for compatibilty.
* This is introduced with a CONFIG_KERN_COMPAT_CPUSET_PRINTF flag which currently is only defined for X86_64_SMP architecture. For all other architectures the current cpumask_scnprintf() is used.
* Add usage information to Documentation/sysctl/kernel.txt for the /proc/sys/kernel/compat_cpus_printf flag.
* Add cpu_sysdev_class functions to display the
cpu_online_map cpu_present_map cpu_possible_map cpu_system_map
* Modify usages of cpumask_scnprintf to use the new cpus_scnprintf where appropriate. The list of files affected are:
arch/x86/kernel/cpu/intel_cacheinfo.c drivers/base/node.c drivers/base/topology.c drivers/pci/pci-sysfs.c drivers/pci/probe.c kernel/irq/proc.c kernel/profile.c kernel/sched_stats.h kernel/sysctl.c kernel/sysctl_check.c kernel/trace/trace.c
Note that kernel/sched.c is not in this patchset as it has many other changes, so the change to use cpus_scnprintf is in a following patchset.
For inclusion in x86/latest.
Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + x86/latest .../x86/linux-2.6-x86.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git
Signed-off-by: Mike Travis <travis@sgi.com> --- v2: Renamed cpuset_scnprintf() to cpus_scnprintf to avoid confusion with "cpusets", and changed the other names to match.
Added a sentinel character for the cpulist type output so scripts can be written to handle both cases.
Added warning in the Documentation/sysctl/kernel.txt that changing this option may break scripts and programs that rely on the current format. Also provided example on how to process the output.
Added information to Documentation/scheduler/sched-stats.txt about change in version number because of new cpus_scnprintf function.
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