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-rw-r--r--init/Kconfig19
1 files changed, 19 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 317d5ccb5191..a4112e95724a 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -490,6 +490,25 @@ config TASK_IO_ACCOUNTING
Say N if unsure.
+config PSI
+ bool "Pressure stall information tracking"
+ help
+ Collect metrics that indicate how overcommitted the CPU, memory,
+ and IO capacity are in the system.
+
+ If you say Y here, the kernel will create /proc/pressure/ with the
+ pressure statistics files cpu, memory, and io. These will indicate
+ the share of walltime in which some or all tasks in the system are
+ delayed due to contention of the respective resource.
+
+ In kernels with cgroup support, cgroups (cgroup2 only) will
+ have cpu.pressure, memory.pressure, and io.pressure files,
+ which aggregate pressure stalls for the grouped tasks only.
+
+ For more details see Documentation/accounting/psi.txt.
+
+ Say N if unsure.
+
endmenu # "CPU/Task time and stats accounting"
config CPU_ISOLATION