2022-11-09 10:05:27

by Wang Wensheng

[permalink] [raw]
Subject: [PATCH -next 1/3] ftrace: Fix the possible incorrect kernel message

If the number of mcount entries is an integer multiple of
ENTRIES_PER_PAGE, the page count showing on the console would be wrong.

Signed-off-by: Wang Wensheng <[email protected]>
---
kernel/trace/ftrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index fbf2543111c0..c571c2813c11 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -7401,7 +7401,7 @@ void __init ftrace_init(void)
}

pr_info("ftrace: allocating %ld entries in %ld pages\n",
- count, count / ENTRIES_PER_PAGE + 1);
+ count, DIV_ROUND_UP(count, ENTRIES_PER_PAGE));

ret = ftrace_process_locs(NULL,
__start_mcount_loc,
--
2.17.1