Patch "ftrace: Optimize the allocation for mcount entries" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    ftrace: Optimize the allocation for mcount entries

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ftrace-optimize-the-allocation-for-mcount-entries.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From bcea02b096333dc74af987cb9685a4dbdd820840 Mon Sep 17 00:00:00 2001
From: Wang Wensheng <wangwensheng4@xxxxxxxxxx>
Date: Wed, 9 Nov 2022 09:44:33 +0000
Subject: ftrace: Optimize the allocation for mcount entries

From: Wang Wensheng <wangwensheng4@xxxxxxxxxx>

commit bcea02b096333dc74af987cb9685a4dbdd820840 upstream.

If we can't allocate this size, try something smaller with half of the
size. Its order should be decreased by one instead of divided by two.

Link: https://lkml.kernel.org/r/20221109094434.84046-3-wangwensheng4@xxxxxxxxxx

Cc: <mhiramat@xxxxxxxxxx>
Cc: <mark.rutland@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Fixes: a79008755497d ("ftrace: Allocate the mcount record pages as groups")
Signed-off-by: Wang Wensheng <wangwensheng4@xxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 kernel/trace/ftrace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3178,7 +3178,7 @@ static int ftrace_allocate_records(struc
 		/* if we can't allocate this size, try something smaller */
 		if (!order)
 			return -ENOMEM;
-		order >>= 1;
+		order--;
 		goto again;
 	}
 


Patches currently in stable-queue which might be from wangwensheng4@xxxxxxxxxx are

queue-5.10/ftrace-optimize-the-allocation-for-mcount-entries.patch
queue-5.10/ftrace-fix-the-possible-incorrect-kernel-message.patch



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