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ftrace: Fix the possible incorrect kernel message

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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>
This commit is contained in:
Wang Wensheng 2022-11-09 09:44:32 +00:00 committed by Greg Kroah-Hartman
parent d7bbdb3ae4
commit 763a09994d
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/ftrace.c
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@ -5177,7 +5177,7 @@ 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;