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| author | Wang Wensheng <wangwensheng4@huawei.com> | 2022-11-09 09:44:32 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-26 09:24:42 +0100 |
| commit | 5c5f2642898f86ec43462d62fc7859c3655b1251 (patch) | |
| tree | 8598c7f7f794fc627aaa0ac82c248fa22d0f09dd /kernel/trace | |
| parent | 2ab2494162440b9edf4a244e23ec75b47d6f8b59 (diff) | |
| download | linux-5c5f2642898f86ec43462d62fc7859c3655b1251.tar.gz linux-5c5f2642898f86ec43462d62fc7859c3655b1251.tar.bz2 linux-5c5f2642898f86ec43462d62fc7859c3655b1251.zip | |
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>
Diffstat (limited to 'kernel/trace')
| -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 c197f39fdb78..21b804f4f325 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -6870,7 +6870,7 @@ 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)); last_ftrace_enabled = ftrace_enabled = 1; |