[PATCH] x86_64: Some updates for boot-options.txt
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -47,7 +47,7 @@ Timing
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notsc
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Don't use the CPU time stamp counter to read the wall time.
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This can be used to work around timing problems on multiprocessor systems
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with not properly synchronized CPUs. Only useful with a SMP kernel
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with not properly synchronized CPUs.
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report_lost_ticks
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Report when timer interrupts are lost because some code turned off
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@ -74,6 +74,9 @@ Idle loop
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event. This will make the CPUs eat a lot more power, but may be useful
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to get slightly better performance in multiprocessor benchmarks. It also
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makes some profiling using performance counters more accurate.
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Please note that on systems with MONITOR/MWAIT support (like Intel EM64T
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CPUs) this option has no performance advantage over the normal idle loop.
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It may also interact badly with hyperthreading.
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Rebooting
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@ -178,6 +181,5 @@ Debugging
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Misc
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noreplacement Don't replace instructions with more appropiate ones
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for the CPU. This may be useful on asymmetric MP systems
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where some CPU have less capabilities than the others.
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for the CPU. This may be useful on asymmetric MP systems
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where some CPU have less capabilities than the others.
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