eve_defconfig: Enable PSI (Pressure Stall Information).

This commit enables CONFIG_PSI=y to introduce tools that can enhance our
system monitoring and troubleshooting capabilities.

Key Benefits:
1. Ability to grab statistics about memory pressure events.
2. Detection of pre-system-wide-OOM conditions.

While this feature provides valuable insights, it introduces slight CPU
and memory overheads due to the tracking and updating of pressure
metrics. This may cause a minor performance impact, especially under
heavy load or in latency-sensitive environments. However, these
trade-offs are considered acceptable for the benefits gained.

Signed-off-by: Nikolay Martyanov <[email protected]>

arch/x86/configs/eve_defconfig

@@ -14,6 +14,7 @@ CONFIG_TASKSTATS=y
 CONFIG_TASK_DELAY_ACCT=y
 CONFIG_TASK_XACCT=y
 CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_PSI=y
 CONFIG_IKCONFIG=y
 CONFIG_IKCONFIG_PROC=y
 CONFIG_MEMCG=y