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Message-Id: <20240429072628.23841-1-zhangwarden@gmail.com>
Date: Mon, 29 Apr 2024 15:26:28 +0800
From: zhangwarden@...il.com
To: jpoimboe@...nel.org,
mbenes@...e.cz,
jikos@...nel.org,
pmladek@...e.com,
joe.lawrence@...hat.com
Cc: live-patching@...r.kernel.org,
linux-kernel@...r.kernel.org,
Wardenjohn <zhangwarden@...il.com>
Subject: [PATCH] livepatch.h: Add comment to klp transition state
From: Wardenjohn <zhangwarden@...il.com>
livepatch.h use KLP_UNDEFINED\KLP_UNPATCHED\KLP_PATCHED for klp transition state.
When livepatch is ready but idle, using KLP_UNDEFINED seems very confusing.
In order not to introduce potential risks to kernel, just update comment
to these state.
---
include/linux/livepatch.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
index 9b9b38e89563..b6a214f2f8e3 100644
--- a/include/linux/livepatch.h
+++ b/include/linux/livepatch.h
@@ -18,9 +18,9 @@
#if IS_ENABLED(CONFIG_LIVEPATCH)
/* task patch states */
-#define KLP_UNDEFINED -1
-#define KLP_UNPATCHED 0
-#define KLP_PATCHED 1
+#define KLP_UNDEFINED -1 /* idle, no transition in progress */
+#define KLP_UNPATCHED 0 /* transitioning to unpatched state */
+#define KLP_PATCHED 1 /* transitioning to patched state */
/**
* struct klp_func - function structure for live patching
--
2.37.3
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