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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-12-31 00:14:15 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-01-06 09:46:51 +0900
commite9666d10a5677a494260d60d1fa0b73cc7646eb3 (patch)
treefd609e683efff32ed6cc1458e20c40969328a33e /net
parent72d3ebb929de339f991fc49b58942d2d5ecdb753 (diff)
jump_label: move 'asm goto' support test to Kconfig
Currently, CONFIG_JUMP_LABEL just means "I _want_ to use jump label". The jump label is controlled by HAVE_JUMP_LABEL, which is defined like this: #if defined(CC_HAVE_ASM_GOTO) && defined(CONFIG_JUMP_LABEL) # define HAVE_JUMP_LABEL #endif We can improve this by testing 'asm goto' support in Kconfig, then make JUMP_LABEL depend on CC_HAS_ASM_GOTO. Ugly #ifdef HAVE_JUMP_LABEL will go away, and CONFIG_JUMP_LABEL will match to the real kernel capability. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c6
-rw-r--r--net/netfilter/core.c6
2 files changed, 6 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 1b5a4410be0e..82f20022259d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1821,7 +1821,7 @@ EXPORT_SYMBOL_GPL(net_dec_egress_queue);
#endif
static DEFINE_STATIC_KEY_FALSE(netstamp_needed_key);
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
static atomic_t netstamp_needed_deferred;
static atomic_t netstamp_wanted;
static void netstamp_clear(struct work_struct *work)
@@ -1840,7 +1840,7 @@ static DECLARE_WORK(netstamp_work, netstamp_clear);
void net_enable_timestamp(void)
{
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
int wanted;
while (1) {
@@ -1860,7 +1860,7 @@ EXPORT_SYMBOL(net_enable_timestamp);
void net_disable_timestamp(void)
{
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
int wanted;
while (1) {
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index dc240cb47ddf..93aaec3a54ec 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -33,7 +33,7 @@ EXPORT_SYMBOL_GPL(nf_ipv6_ops);
DEFINE_PER_CPU(bool, nf_skb_duplicated);
EXPORT_SYMBOL_GPL(nf_skb_duplicated);
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
struct static_key nf_hooks_needed[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
EXPORT_SYMBOL(nf_hooks_needed);
#endif
@@ -347,7 +347,7 @@ static int __nf_register_net_hook(struct net *net, int pf,
if (pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)
net_inc_ingress_queue();
#endif
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
static_key_slow_inc(&nf_hooks_needed[pf][reg->hooknum]);
#endif
BUG_ON(p == new_hooks);
@@ -405,7 +405,7 @@ static void __nf_unregister_net_hook(struct net *net, int pf,
if (pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)
net_dec_ingress_queue();
#endif
-#ifdef HAVE_JUMP_LABEL
+#ifdef CONFIG_JUMP_LABEL
static_key_slow_dec(&nf_hooks_needed[pf][reg->hooknum]);
#endif
} else {

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