Commit b225d44e authored by Li Zefan's avatar Li Zefan Committed by Linus Torvalds

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: default avatarLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a684e7d3
...@@ -995,13 +995,15 @@ and is between 256 and 4096 characters. It is defined in the file ...@@ -995,13 +995,15 @@ and is between 256 and 4096 characters. It is defined in the file
Format: Format:
<cpu number>,...,<cpu number> <cpu number>,...,<cpu number>
or or
<cpu number>-<cpu number> (must be a positive range in ascending order) <cpu number>-<cpu number>
(must be a positive range in ascending order)
or a mixture or a mixture
<cpu number>,...,<cpu number>-<cpu number> <cpu number>,...,<cpu number>-<cpu number>
This option can be used to specify one or more CPUs This option can be used to specify one or more CPUs
to isolate from the general SMP balancing and scheduling to isolate from the general SMP balancing and scheduling
algorithms. The only way to move a process onto or off algorithms. You can move a process onto or off an
an "isolated" CPU is via the CPU affinity syscalls. "isolated" CPU via the CPU affinity syscalls or cpuset.
<cpu number> begins at 0 and the maximum value is <cpu number> begins at 0 and the maximum value is
"number of CPUs in system - 1". "number of CPUs in system - 1".
......
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