forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

ftrace: Fix the possible incorrect kernel message

Browse source 
commit 08948caebe 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: 5821e1b74f ("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
commit 9569eed79b
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
kernel/trace/ftrace.c
View file

@ -6877,7 +6877,7 @@ void __init ftrace_init(void)
} }
pr_info("ftrace: allocating %ld entries in %ld pages\n", 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; last_ftrace_enabled = ftrace_enabled = 1;