diff options
| author | Wang Wensheng <wangwensheng4@huawei.com> | 2022-11-09 09:44:32 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-26 09:27:40 +0100 |
| commit | dbaba88c19374227da0a5abc619ae430295cc43c (patch) | |
| tree | b78da618368ababceae6ee7d16565e6b27c04dd3 | |
| parent | a72216f25fbbb61bcdec88a861c01ab4ffac2a4b (diff) | |
ftrace: Fix the possible incorrect kernel message
commit 08948caebe93482db1adfd2154eba124f66d161d upstream.
If the number of mcount entries is an integer multiple of
ENTRIES_PER_PAGE, the page count showing on the console would be wrong.
Link: https://lkml.kernel.org/r/20221109094434.84046-2-wangwensheng4@huawei.com
Cc: <mhiramat@kernel.org>
Cc: <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Fixes: 5821e1b74f0d0 ("function tracing: fix wrong pos computing when read buffer has been fulfilled")
Signed-off-by: Wang Wensheng <wangwensheng4@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | kernel/trace/ftrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 8cc9eb60c3c2..375a24598fd3 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -7394,7 +7394,7 @@ 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, |