Patchwork nodmask.h: remove macro any_online_node

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Submitter hartleys
Date Jan. 6, 2010, 11:24 p.m.
Message ID <201001061624.59118.hartleys@visionengravers.com>
Download mbox | patch
Permalink /patch/42366/
State Not Applicable
Delegated to: David Miller
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hartleys - Jan. 6, 2010, 11:24 p.m.
nodmask.h: remove macro any_online_node

The macro any_online_node is prone to producing sparse warnings
due to the local symbol 'node'. Since all the in-tree users are really
requesting the first online node (the mask argument is either
NODE_MASK_ALL or node_online_map) just use the first_online_node
macro and remove the any_online_node macro since there are no users.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Milton Miller <miltonm@bga.com>
Cc: Nathan Fontenot <nfont@austin.ibm.com>
Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: J. Bruce Fields <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Benny Halevy <bhalevy@panasas.com>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>

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KAMEZAWA Hiroyuki - Jan. 6, 2010, 11:51 p.m.
On Wed, 6 Jan 2010 16:24:58 -0700
H Hartley Sweeten <hartleys@visionengravers.com> wrote:

> nodmask.h: remove macro any_online_node
> 
> The macro any_online_node is prone to producing sparse warnings
> due to the local symbol 'node'. Since all the in-tree users are really
> requesting the first online node (the mask argument is either
> NODE_MASK_ALL or node_online_map) just use the first_online_node
> macro and remove the any_online_node macro since there are no users.
> 

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Thank you.
BTW, it's better to add diffstat to this kind of changes.

Regards,
-Kame

> Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: David Rientjes <rientjes@google.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Mel Gorman <mel@csn.ul.ie>
> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Dave Hansen <dave@linux.vnet.ibm.com>
> Cc: Milton Miller <miltonm@bga.com>
> Cc: Nathan Fontenot <nfont@austin.ibm.com>
> Cc: Geoff Levand <geoffrey.levand@am.sony.com>
> Cc: Grant Likely <grant.likely@secretlab.ca>
> Cc: J. Bruce Fields <bfields@fieldses.org>
> Cc: Neil Brown <neilb@suse.de>
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
> Cc: David S. Miller <davem@davemloft.net>
> Cc: Benny Halevy <bhalevy@panasas.com>
> Cc: Chuck Lever <chuck.lever@oracle.com>
> Cc: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
> 
> ---
> 
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index b037d95..64c0022 100644
> --- a/arch/powerpc/mm/numa.c
> +++ b/arch/powerpc/mm/numa.c
> @@ -451,7 +451,7 @@ static int __cpuinit numa_setup_cpu(unsigned long lcpu)
>  	nid = of_node_to_nid_single(cpu);
>  
>  	if (nid < 0 || !node_online(nid))
> -		nid = any_online_node(NODE_MASK_ALL);
> +		nid = first_online_node;
>  out:
>  	map_cpu_to_node(lcpu, nid);
>  
> @@ -1114,7 +1114,7 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
>  	int nid, found = 0;
>  
>  	if (!numa_enabled || (min_common_depth < 0))
> -		return any_online_node(NODE_MASK_ALL);
> +		return first_online_node;
>  
>  	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
>  	if (memory) {
> @@ -1125,7 +1125,7 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
>  	}
>  
>  	if (nid < 0 || !node_online(nid))
> -		nid = any_online_node(NODE_MASK_ALL);
> +		nid = first_online_node;
>  
>  	if (NODE_DATA(nid)->node_spanned_pages)
>  		return nid;
> diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
> index 454997c..c4fa64b 100644
> --- a/include/linux/nodemask.h
> +++ b/include/linux/nodemask.h
> @@ -69,8 +69,6 @@
>   * int node_online(node)		Is some node online?
>   * int node_possible(node)		Is some node possible?
>   *
> - * int any_online_node(mask)		First online node in mask
> - *
>   * node_set_online(node)		set bit 'node' in node_online_map
>   * node_set_offline(node)		clear bit 'node' in node_online_map
>   *
> @@ -467,15 +465,6 @@ static inline int num_node_state(enum node_states state)
>  #define node_online_map 	node_states[N_ONLINE]
>  #define node_possible_map 	node_states[N_POSSIBLE]
>  
> -#define any_online_node(mask)			\
> -({						\
> -	int node;				\
> -	for_each_node_mask(node, (mask))	\
> -		if (node_online(node))		\
> -			break;			\
> -	node;					\
> -})
> -
>  #define num_online_nodes()	num_node_state(N_ONLINE)
>  #define num_possible_nodes()	num_node_state(N_POSSIBLE)
>  #define node_online(node)	node_state((node), N_ONLINE)
> diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
> index 538ca43..832c1fe 100644
> --- a/net/sunrpc/svc.c
> +++ b/net/sunrpc/svc.c
> @@ -133,7 +133,7 @@ svc_pool_map_choose_mode(void)
>  		return SVC_POOL_PERNODE;
>  	}
>  
> -	node = any_online_node(node_online_map);
> +	node = first_online_node;
>  	if (nr_cpus_node(node) > 2) {
>  		/*
>  		 * Non-trivial SMP, or CONFIG_NUMA on
> --
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David Rientjes - Jan. 6, 2010, 11:52 p.m.
On Wed, 6 Jan 2010, H Hartley Sweeten wrote:

> nodmask.h: remove macro any_online_node
> 
> The macro any_online_node is prone to producing sparse warnings
> due to the local symbol 'node'. Since all the in-tree users are really
> requesting the first online node (the mask argument is either
> NODE_MASK_ALL or node_online_map) just use the first_online_node
> macro and remove the any_online_node macro since there are no users.
> 
> Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: David Rientjes <rientjes@google.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Mel Gorman <mel@csn.ul.ie>
> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Dave Hansen <dave@linux.vnet.ibm.com>
> Cc: Milton Miller <miltonm@bga.com>
> Cc: Nathan Fontenot <nfont@austin.ibm.com>
> Cc: Geoff Levand <geoffrey.levand@am.sony.com>
> Cc: Grant Likely <grant.likely@secretlab.ca>
> Cc: J. Bruce Fields <bfields@fieldses.org>
> Cc: Neil Brown <neilb@suse.de>
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
> Cc: David S. Miller <davem@davemloft.net>
> Cc: Benny Halevy <bhalevy@panasas.com>
> Cc: Chuck Lever <chuck.lever@oracle.com>
> Cc: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>

Acked-by: David Rientjes <rientjes@google.com>
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Benjamin Herrenschmidt - Feb. 1, 2010, 2:05 a.m.
On Wed, 2010-01-06 at 16:24 -0700, H Hartley Sweeten wrote:
> nodmask.h: remove macro any_online_node
> 
> The macro any_online_node is prone to producing sparse warnings
> due to the local symbol 'node'. Since all the in-tree users are really
> requesting the first online node (the mask argument is either
> NODE_MASK_ALL or node_online_map) just use the first_online_node
> macro and remove the any_online_node macro since there are no users.
> 
> Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: David Rientjes <rientjes@google.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Mel Gorman <mel@csn.ul.ie>
> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Dave Hansen <dave@linux.vnet.ibm.com>
> Cc: Milton Miller <miltonm@bga.com>
> Cc: Nathan Fontenot <nfont@austin.ibm.com>
> Cc: Geoff Levand <geoffrey.levand@am.sony.com>
> Cc: Grant Likely <grant.likely@secretlab.ca>
> Cc: J. Bruce Fields <bfields@fieldses.org>
> Cc: Neil Brown <neilb@suse.de>
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
> Cc: David S. Miller <davem@davemloft.net>
> Cc: Benny Halevy <bhalevy@panasas.com>
> Cc: Chuck Lever <chuck.lever@oracle.com>
> Cc: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>

Cheers,
Ben.


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Patch

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index b037d95..64c0022 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -451,7 +451,7 @@  static int __cpuinit numa_setup_cpu(unsigned long lcpu)
 	nid = of_node_to_nid_single(cpu);
 
 	if (nid < 0 || !node_online(nid))
-		nid = any_online_node(NODE_MASK_ALL);
+		nid = first_online_node;
 out:
 	map_cpu_to_node(lcpu, nid);
 
@@ -1114,7 +1114,7 @@  int hot_add_scn_to_nid(unsigned long scn_addr)
 	int nid, found = 0;
 
 	if (!numa_enabled || (min_common_depth < 0))
-		return any_online_node(NODE_MASK_ALL);
+		return first_online_node;
 
 	memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
 	if (memory) {
@@ -1125,7 +1125,7 @@  int hot_add_scn_to_nid(unsigned long scn_addr)
 	}
 
 	if (nid < 0 || !node_online(nid))
-		nid = any_online_node(NODE_MASK_ALL);
+		nid = first_online_node;
 
 	if (NODE_DATA(nid)->node_spanned_pages)
 		return nid;
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 454997c..c4fa64b 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -69,8 +69,6 @@ 
  * int node_online(node)		Is some node online?
  * int node_possible(node)		Is some node possible?
  *
- * int any_online_node(mask)		First online node in mask
- *
  * node_set_online(node)		set bit 'node' in node_online_map
  * node_set_offline(node)		clear bit 'node' in node_online_map
  *
@@ -467,15 +465,6 @@  static inline int num_node_state(enum node_states state)
 #define node_online_map 	node_states[N_ONLINE]
 #define node_possible_map 	node_states[N_POSSIBLE]
 
-#define any_online_node(mask)			\
-({						\
-	int node;				\
-	for_each_node_mask(node, (mask))	\
-		if (node_online(node))		\
-			break;			\
-	node;					\
-})
-
 #define num_online_nodes()	num_node_state(N_ONLINE)
 #define num_possible_nodes()	num_node_state(N_POSSIBLE)
 #define node_online(node)	node_state((node), N_ONLINE)
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 538ca43..832c1fe 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -133,7 +133,7 @@  svc_pool_map_choose_mode(void)
 		return SVC_POOL_PERNODE;
 	}
 
-	node = any_online_node(node_online_map);
+	node = first_online_node;
 	if (nr_cpus_node(node) > 2) {
 		/*
 		 * Non-trivial SMP, or CONFIG_NUMA on