Since kernel commit ff58fa7f556c ("Documentation: Update CPU hotplug and move it to core-api"),
cpu_hotplug.txt has been removed. We should update it in here.

Signed-off-by: Yang Xu<xuyang2018.jy@fujitsu.com>
---
  Documentation/admin-guide/cputopology.rst | 10 +++++-----
  1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Documentation/admin-guide/cputopology.rst b/Documentation/admin-guide/cputopology.rst
index b90dafcc8237..09efbde11478 100644
--- a/Documentation/admin-guide/cputopology.rst
+++ b/Documentation/admin-guide/cputopology.rst

@@ -135,9 +135,9 @@ source for the output is in brackets ("[]").
  		[NR_CPUS-1]

      offline:	CPUs that are not online because they have been
-		HOTPLUGGED off (see cpu-hotplug.txt) or exceed the limit
-		of CPUs allowed by the kernel configuration (kernel_max
-		above). [~cpu_online_mask + cpus>= NR_CPUS]
+		HOTPLUGGED off or exceed the limit of CPUs allowed by the
+		kernel configuration (kernel_max above).
+		[~cpu_online_mask + cpus>= NR_CPUS]

      online:	CPUs that are online and being scheduled [cpu_online_mask]

@@ -173,5 +173,5 @@ online.)::
         possible: 0-127
          present: 0-3

-See cpu-hotplug.txt for the possible_cpus=NUM kernel start parameter
-as well as more information on the various cpumasks.
+See Documentation/core-api/cpu_hotplug.rst for the possible_cpus=NUM
+kernel start parameter as well as more information on the various cpumasks.