rasdaemon: introduce poison page statistics

[winterddd]

An excessive number of poison pages can lead to memory fragmentation, which may degrade system performance. This patch introduces a threshold monitoring mechanism for poison pages. When the number of poison pages exceeds the predefined threshold, a warning is issued to alert administrators.

[winterddd]

More modify: add ras_poison_page_stat when occuring page offline

diff --git a/ras-page-isolation.c b/ras-page-isolation.c
index 2166f5c..f3b1696 100644
--- a/ras-page-isolation.c
+++ b/ras-page-isolation.c
@@ -349,6 +349,10 @@ static void page_offline(struct page_record *pr)
 
        log(TERM, LOG_INFO, "Result of offlining page at %#llx: %s\n",
            addr, page_state[pr->offlined]);
+
+#ifdef HAVE_POISON_PAGE_STAT
+       ras_poison_page_stat();
+#endif
 }

[axiqia]

LGTM, now. Thanks.

Reviewed-by: Shuai Xue [email protected]

[mchehab]

Merged, thanks!