These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

3 files changed, 14 insertions, 49 deletions

diff --git a/kernel/Documentation/filesystems/nfs/knfsd-stats.txt b/kernel/Documentation/filesystems/nfs/knfsd-stats.txt
index 64ced5149..1a5d82180 100644
--- a/kernel/Documentation/filesystems/nfs/knfsd-stats.txt
+++ b/kernel/Documentation/filesystems/nfs/knfsd-stats.txt
@@ -68,16 +68,10 @@ sockets-enqueued
 	rate of change for this counter is zero; significantly non-zero
 	values may indicate a performance limitation.
 
-	This can happen either because there are too few nfsd threads in the
-	thread pool for the NFS workload (the workload is thread-limited),
-	or because the NFS workload needs more CPU time than is available in
-	the thread pool (the workload is CPU-limited).  In the former case,
-	configuring more nfsd threads will probably improve the performance
-	of the NFS workload.  In the latter case, the sunrpc server layer is
-	already choosing not to wake idle nfsd threads because there are too
-	many nfsd threads which want to run but cannot, so configuring more
-	nfsd threads will make no difference whatsoever.  The overloads-avoided
-	statistic (see below) can be used to distinguish these cases.
+	This can happen because there are too few nfsd threads in the thread
+	pool for the NFS workload (the workload is thread-limited), in which
+	case configuring more nfsd threads will probably improve the
+	performance of the NFS workload.
 
 threads-woken
 	Counts how many times an idle nfsd thread is woken to try to
@@ -88,36 +82,6 @@ threads-woken
 	thing.  The ideal rate of change for this counter will be close
 	to but less than the rate of change of the packets-arrived counter.
 
-overloads-avoided
-	Counts how many times the sunrpc server layer chose not to wake an
-	nfsd thread, despite the presence of idle nfsd threads, because
-	too many nfsd threads had been recently woken but could not get
-	enough CPU time to actually run.
-
-	This statistic counts a circumstance where the sunrpc layer
-	heuristically avoids overloading the CPU scheduler with too many
-	runnable nfsd threads.  The ideal rate of change for this counter
-	is zero.  Significant non-zero values indicate that the workload
-	is CPU limited.  Usually this is associated with heavy CPU usage
-	on all the CPUs in the nfsd thread pool.
-
-	If a sustained large overloads-avoided rate is detected on a pool,
-	the top(1) utility should be used to check for the following
-	pattern of CPU usage on all the CPUs associated with the given
-	nfsd thread pool.
-
-	 - %us ~= 0 (as you're *NOT* running applications on your NFS server)
-
-	 - %wa ~= 0
-
-	 - %id ~= 0
-
-	 - %sy + %hi + %si ~= 100
-
-	If this pattern is seen, configuring more nfsd threads will *not*
-	improve the performance of the workload.  If this patten is not
-	seen, then something more subtle is wrong.
-
 threads-timedout
 	Counts how many times an nfsd thread triggered an idle timeout,
 	i.e. was not woken to handle any incoming network packets for
diff --git a/kernel/Documentation/filesystems/nfs/nfs-rdma.txt b/kernel/Documentation/filesystems/nfs/nfs-rdma.txt
index 95c13aa57..906b6c233 100644
--- a/kernel/Documentation/filesystems/nfs/nfs-rdma.txt
+++ b/kernel/Documentation/filesystems/nfs/nfs-rdma.txt
@@ -138,9 +138,9 @@ Installation
   - Build, install, reboot
 
     The NFS/RDMA code will be enabled automatically if NFS and RDMA
-    are turned on. The NFS/RDMA client and server are configured via the
-    SUNRPC_XPRT_RDMA_CLIENT and SUNRPC_XPRT_RDMA_SERVER config options that both
-    depend on SUNRPC and INFINIBAND. The default value of both options will be:
+    are turned on. The NFS/RDMA client and server are configured via the hidden
+    SUNRPC_XPRT_RDMA config option that depends on SUNRPC and INFINIBAND. The
+    value of SUNRPC_XPRT_RDMA will be:
 
      - N if either SUNRPC or INFINIBAND are N, in this case the NFS/RDMA client
        and server will not be built
@@ -238,9 +238,8 @@ NFS/RDMA Setup
 
   - Start the NFS server
 
-    If the NFS/RDMA server was built as a module
-    (CONFIG_SUNRPC_XPRT_RDMA_SERVER=m in kernel config), load the RDMA
-    transport module:
+    If the NFS/RDMA server was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
+    kernel config), load the RDMA transport module:
 
     $ modprobe svcrdma
 
@@ -259,9 +258,8 @@ NFS/RDMA Setup
 
   - On the client system
 
-    If the NFS/RDMA client was built as a module
-    (CONFIG_SUNRPC_XPRT_RDMA_CLIENT=m in kernel config), load the RDMA client
-    module:
+    If the NFS/RDMA client was built as a module (CONFIG_SUNRPC_XPRT_RDMA=m in
+    kernel config), load the RDMA client module:
 
     $ modprobe xprtrdma.ko
 
diff --git a/kernel/Documentation/filesystems/nfs/nfsroot.txt b/kernel/Documentation/filesystems/nfs/nfsroot.txt
index 2d66ed688..bb5ab6de5 100644
--- a/kernel/Documentation/filesystems/nfs/nfsroot.txt
+++ b/kernel/Documentation/filesystems/nfs/nfsroot.txt
@@ -157,6 +157,9 @@ ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>:
 		  both:        use both BOOTP and RARP but not DHCP
 		               (old option kept for backwards compatibility)
 
+		if dhcp is used, the client identifier can be used by following
+		format "ip=dhcp,client-id-type,client-id-value"
+
                 Default: any
 
   <dns0-ip>	IP address of first nameserver.