Documentation/kernel-parameters.txt: update 'isolcpus' kernel option
cpuset can be used to move a process onto or off an isolated CPU. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -995,13 +995,15 @@ and is between 256 and 4096 characters. It is defined in the file
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Format:
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Format:
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<cpu number>,...,<cpu number>
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<cpu number>,...,<cpu number>
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or
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or
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<cpu number>-<cpu number> (must be a positive range in ascending order)
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<cpu number>-<cpu number>
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(must be a positive range in ascending order)
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or a mixture
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or a mixture
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<cpu number>,...,<cpu number>-<cpu number>
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<cpu number>,...,<cpu number>-<cpu number>
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This option can be used to specify one or more CPUs
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This option can be used to specify one or more CPUs
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to isolate from the general SMP balancing and scheduling
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to isolate from the general SMP balancing and scheduling
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algorithms. The only way to move a process onto or off
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algorithms. You can move a process onto or off an
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an "isolated" CPU is via the CPU affinity syscalls.
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"isolated" CPU via the CPU affinity syscalls or cpuset.
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<cpu number> begins at 0 and the maximum value is
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<cpu number> begins at 0 and the maximum value is
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"number of CPUs in system - 1".
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"number of CPUs in system - 1".
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