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-rw-r--r--arch/powerpc/platforms/pseries/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index c0e6ec240f46..f0e6f28427bd 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -68,3 +68,13 @@ config CMM
makes sense for a system running in an LPAR where the unused pages
will be reused for other LPARs. The interface allows firmware to
balance memory across many LPARs.
+
+config DTL
+ bool "Dispatch Trace Log"
+ depends on PPC_SPLPAR && DEBUG_FS
+ help
+ SPLPAR machines can log hypervisor preempt & dispatch events to a
+ kernel buffer. Saying Y here will enable logging these events,
+ which are accessible through a debugfs file.
+
+ Say N if you are unsure.