On Sat, 8 Mar 2025, Martin Liu wrote:

This commit introduces the `mm_setup_per_zone_lowmem_reserve` trace
event,which provides detailed insights into the kernel's per-zone lowmem
reserve configuration.

The trace event provides precise timestamps, allowing developers to

1. Correlate lowmem reserve changes with specific kernel events and
able to diagnose unexpected kswapd or direct reclaim behavior
triggered by dynamic changes in lowmem reserve.

2. know memory allocation failures that occur due to insufficient lowmem
reserve, by precisely correlating allocation attempts with reserve
adjustments.

Signed-off-by: Martin Liu <redacted>

Acked-by: David Rientjes <rientjes@google.com>