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scripts: ftrace - move the sort-processing in ftrace_init

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When the kernel starts, the initialization of ftrace takes
up a portion of the time (approximately 6~8ms) to sort mcount
addresses. We can save this time by moving mcount-sorting to
compile time.

Link: https://lkml.kernel.org/r/20211212113358.34208-2-yinan@linux.alibaba.com

Signed-off-by: Yinan Liu <yinan@linux.alibaba.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Yinan Liu
2021-12-12 19:33:58 +08:00
committed by Steven Rostedt
parent 1c1857d400
commit 72b3942a17
5 changed files with 137 additions and 8 deletions
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2
scripts/sorttable.c
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@@ -30,6 +30,8 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <tools/be_byteshift.h>
#include <tools/le_byteshift.h>