Intel: perf/x86/intel: Introduce the fourth fixed counter

mainline inclusion
from mainline-v5.10-rc1
commit 6f722509
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I47H3V


CVE: NA

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

commit 6f722509 upstream
Backport summary: backport to kernel 4.19.57 for ICX perf topdown support

The fourth fixed counter, TOPDOWN.SLOTS, is introduced in Ice Lake to
measure the level 1 TopDown events.

Add MSR address and macros for the new fixed counter, which will be used
in a later patch.

Add comments to explain the event encoding rules for the fixed counters.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200723171117.9918-4-kan.liang@linux.intel.com


Signed-off-by: Yunying Sun <yunying.sun@intel.com>
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>