x86/tsc: Add a timer to make sure TSC_adjust is always checked
stable inclusion from stable-v5.10.84 commit 1ed4a8fd363cd3d3e8b2853673b3ed84920a868e bugzilla: 186030 https://gitee.com/openeuler/kernel/issues/I4QV2F Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1ed4a8fd363cd3d3e8b2853673b3ed84920a868e -------------------------------- commit c7719e79 upstream. The TSC_ADJUST register is checked every time a CPU enters idle state, but Thomas Gleixner mentioned there is still a caveat that a system won't enter idle [1], either because it's too busy or configured purposely to not enter idle. Setup a periodic timer (every 10 minutes) to make sure the check is happening on a regular base. [1] https://lore.kernel.org/lkml/875z286xtk.fsf@nanos.tec.linutronix.de/ Fixes: 6e3cd952 ("x86/hpet: Use another crystalball to evaluate HPET usability") Requested-by:Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Feng Tang <feng.tang@intel.com> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20211117023751.24190-1-feng.tang@intel.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Chen Jun <chenjun102@huawei.com> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com>
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