mainline inclusion
from mainline-v5.12-rc4
commit 9d839c28
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5G10C
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
commit/?id=9d839c28

Intel-SIG: commit 9d839c Documentation/admin-guide: Add bus lock ratelimit

--------------------------------

Since bus lock rate limit changes the split_lock_detect parameter,
update the documentation for the change.
Signed-off-by: NFenghua Yu <fenghua.yu@intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Reviewed-by: NTony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210419214958.4035512-4-fenghua.yu@intel.com

(cherry picked from commit 9d839c28)
Signed-off-by: NEthan Zhao <haifeng.zhao@linux.intel.com>
Signed-off-by: NJason Zeng <jason.zeng@intel.com>