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Date: Fri, 22 Feb 2008 13:09:17 -0800 From: Max Krasnyansky <maxk@...lcomm.com> To: mingo@...e.hu Cc: linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl, pj@....com, Max Krasnyansky <maxk@...lcomm.com> Subject: [PATCH sched-devel 6/7] cpuisol: Minor updates to the Kconfig options Fixed a couple of typos, long lines and referred to the documentation file. Signed-off-by: Max Krasnyansky <maxk@...lcomm.com> --- kernel/Kconfig.cpuisol | 31 +++++++++++++++++-------------- 1 files changed, 17 insertions(+), 14 deletions(-) diff --git a/kernel/Kconfig.cpuisol b/kernel/Kconfig.cpuisol index 81f1972..e681b02 100644 --- a/kernel/Kconfig.cpuisol +++ b/kernel/Kconfig.cpuisol @@ -2,23 +2,26 @@ config CPUISOL depends on SMP bool "CPU isolation" help - This option enables support for CPU isolation. - If enabled the kernel will try to avoid kernel activity on the isolated CPUs. - By default user-space threads are not scheduled on the isolated CPUs unless - they explicitly request it (via sched_ and pthread_ affinity calls). Isolated - CPUs are not subject to the scheduler load-balancing algorithms. - - CPUs can be marked as isolated using 'isolcpus=' command line option or by - writing '1' into /sys/devices/system/cpu/cpuN/isolated. - - This feature is useful for hard realtime and high performance applications. + This option enables support for CPU isolation. If enabled the + kernel will try to avoid kernel activity on the isolated CPUs. + By default user-space threads are not scheduled on the isolated + CPUs unless they explicitly request it via sched_setaffinity() + and pthread_setaffinity_np() calls. Isolated CPUs are not + subject to the scheduler load-balancing algorithms. + + This feature is useful for hard realtime and high performance + applications. + See Documentation/cpu-isolation.txt for more details. + If unsure say 'N'. config CPUISOL_WORKQUEUE bool "Do not schedule workqueues on the isolated CPUs (EXPERIMENTAL)" depends on CPUISOL && EXPERIMENTAL help - In this option is enabled kernel will not schedule workqueues on the - isolated CPUs. - Please note that at this point this feature is experimental. It brakes - certain things like OProfile that heavily rely on per cpu workqueues. + If this option is enabled kernel will not schedule workqueues on + the isolated CPUs. Please note that at this point this feature + is experimental. It breaks certain things like OProfile that + heavily rely on per cpu workqueues. + + Say 'Y' to enable workqueue isolation. If unsure say 'N'. -- 1.5.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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