Revision 3a53396b0381ec9d5180fd8fe7a681c8ce95fd9a authored by ShuoX Liu on 28 March 2012, 22:19:11 UTC, committed by Len Brown on 30 March 2012, 05:52:58 UTC
Some C states of new CPU might be not good. One reason is BIOS might configure them incorrectly. To help developers root cause it quickly, the patch adds a new sysfs entry, so developers could disable specific C state manually. In addition, C state might have much impact on performance tuning, as it takes much time to enter/exit C states, which might delay interrupt processing. With the new debug option, developers could check if a deep C state could impact performance and how much impact it could cause. Also add this option in Documentation/cpuidle/sysfs.txt. [akpm@linux-foundation.org: check kstrtol return value] Signed-off-by: ShuoX Liu <shuox.liu@intel.com> Reviewed-by: Yanmin Zhang <yanmin_zhang@intel.com> Reviewed-and-Tested-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
1 parent 6a6ea0a
| File | Mode | Size |
|---|---|---|
| README.txt | -rw-r--r-- | 1.2 KB |
| atomic-ops.txt | -rw-r--r-- | 4.5 KB |
| booting.txt | -rw-r--r-- | 5.8 KB |
| clock.txt | -rw-r--r-- | 2.4 KB |
| configuring.txt | -rw-r--r-- | 4.0 KB |
| features.txt | -rw-r--r-- | 10.6 KB |
| gdbinit | -rw-r--r-- | 11.4 KB |
| gdbstub.txt | -rw-r--r-- | 4.7 KB |
| kernel-ABI.txt | -rw-r--r-- | 9.2 KB |
| mmu-layout.txt | -rw-r--r-- | 13.9 KB |
Computing file changes ...
