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authorMel Gorman <mel@csn.ul.ie>2007-10-24 12:23:50 -0400
committerIngo Molnar <mingo@elte.hu>2007-10-24 12:23:50 -0400
commitb3da2a73ff5a2953a4ad8ebbf0aa7e6965ff9de2 (patch)
tree43583e5f492a48c56f9537006c8f806d570b0d84 /Documentation/kernel-parameters.txt
parent838225b48edc971620cbeb292034dabd2b0d7d1d (diff)
sched: document profile=sleep requiring CONFIG_SCHEDSTATS
profile=sleep only works if CONFIG_SCHEDSTATS is set. This patch notes the limitation in Documentation/kernel-parameters.txt and prints a warning at boot-time if profile=sleep is used without CONFIG_SCHEDSTAT. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index a13d69b2217d..8ae5fac08dfa 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1444,7 +1444,8 @@ and is between 256 and 4096 characters. It is defined in the file
1444 Param: "schedule" - profile schedule points. 1444 Param: "schedule" - profile schedule points.
1445 Param: <number> - step/bucket size as a power of 2 for 1445 Param: <number> - step/bucket size as a power of 2 for
1446 statistical time based profiling. 1446 statistical time based profiling.
1447 Param: "sleep" - profile D-state sleeping (millisecs) 1447 Param: "sleep" - profile D-state sleeping (millisecs).
1448 Requires CONFIG_SCHEDSTATS
1448 Param: "kvm" - profile VM exits. 1449 Param: "kvm" - profile VM exits.
1449 1450
1450 processor.max_cstate= [HW,ACPI] 1451 processor.max_cstate= [HW,ACPI]