[PATCH v2 02/33] locking/atomic: net: use linux/atomic.h for xchg & cmpxchg

From: Mark Rutland
Date: Tue May 25 2021 - 10:03:56 EST

As xchg*() and cmpxchg*() may be instrumented by atomic-instrumented.h,
it's necessary to include <linux/atomic.h> to use these, rather than
<asm/cmpxchg.h>, which is effectively an arch-internal header.

In a couple of places we include <asm/cmpxchg.h>, but get away with this
as <linux/atomic.h> gets pulled in inidrectly by another include. Before
we convert more architectures to use atomic-instrumented.h, let's fix
these up to use <linux/atomic.h> so that we don't make things more

Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
net/core/filter.c | 2 +-
net/sunrpc/xprtmultipath.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c
index cae56d08a670..ce4ae1a19a71 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -17,6 +17,7 @@
* Kris Katterjohn - Added many additional checks in bpf_check_classic()

+#include <linux/atomic.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/mm.h>
@@ -41,7 +42,6 @@
#include <linux/timer.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>
-#include <asm/cmpxchg.h>
#include <linux/filter.h>
#include <linux/ratelimit.h>
#include <linux/seccomp.h>
diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c
index 78c075a68c04..1b4073131c6f 100644
--- a/net/sunrpc/xprtmultipath.c
+++ b/net/sunrpc/xprtmultipath.c
@@ -7,13 +7,13 @@
* Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
+#include <linux/atomic.h>
#include <linux/types.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/rcupdate.h>
#include <linux/rculist.h>
#include <linux/slab.h>
-#include <asm/cmpxchg.h>
#include <linux/spinlock.h>
#include <linux/sunrpc/xprt.h>
#include <linux/sunrpc/addr.h>