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Groups > linux.kernel > #1479684

[RFC PATCH v3 6/7] ipv6: Remove useless parameter in __snmp6_fill_statsdev

From Jia He <hejianet@gmail.com>
Newsgroups linux.kernel
Subject [RFC PATCH v3 6/7] ipv6: Remove useless parameter in __snmp6_fill_statsdev
Date 2016-09-09 08:40 +0200
Message-ID <sfnDH-7Sc-13@gated-at.bofh.it> (permalink)
References <sfnDH-7Sc-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The parameter items(always ICMP6_MIB_MAX) is useless for __snmp6_fill_statsdev.

Signed-off-by: Jia He <hejianet@gmail.com>
---
 net/ipv6/addrconf.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f418d2e..e170554 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4952,18 +4952,18 @@ static inline size_t inet6_if_nlmsg_size(void)
 }
 
 static inline void __snmp6_fill_statsdev(u64 *stats, atomic_long_t *mib,
-				      int items, int bytes)
+					int bytes)
 {
 	int i;
-	int pad = bytes - sizeof(u64) * items;
+	int pad = bytes - sizeof(u64) * ICMP6_MIB_MAX;
 	BUG_ON(pad < 0);
 
 	/* Use put_unaligned() because stats may not be aligned for u64. */
-	put_unaligned(items, &stats[0]);
-	for (i = 1; i < items; i++)
+	put_unaligned(ICMP6_MIB_MAX, &stats[0]);
+	for (i = 1; i < ICMP6_MIB_MAX; i++)
 		put_unaligned(atomic_long_read(&mib[i]), &stats[i]);
 
-	memset(&stats[items], 0, pad);
+	memset(&stats[ICMP6_MIB_MAX], 0, pad);
 }
 
 static inline void __snmp6_fill_stats64(u64 *stats, void __percpu *mib,
@@ -4996,7 +4996,7 @@ static void snmp6_fill_stats(u64 *stats, struct inet6_dev *idev, int attrtype,
 				     offsetof(struct ipstats_mib, syncp));
 		break;
 	case IFLA_INET6_ICMP6STATS:
-		__snmp6_fill_statsdev(stats, idev->stats.icmpv6dev->mibs, ICMP6_MIB_MAX, bytes);
+		__snmp6_fill_statsdev(stats, idev->stats.icmpv6dev->mibs, bytes);
 		break;
 	}
 }
-- 
1.8.3.1

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Thread

[RFC PATCH v3 0/7] Reduce cache miss for snmp_fold_field Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
  [RFC PATCH v3 4/7] proc: Reduce cache miss in sctp_snmp_seq_show Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
  [RFC PATCH v3 2/7] proc: Reduce cache miss in {snmp,netstat}_seq_show Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
    Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show Marcelo <marcelo.leitner@gmail.com> - 2016-09-12 21:00 +0200
      Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show hejianet <hejianet@gmail.com> - 2016-09-14 05:20 +0200
      Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show hejianet <hejianet@gmail.com> - 2016-09-14 08:00 +0200
        Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show Marcelo <marcelo.leitner@gmail.com> - 2016-09-14 14:00 +0200
          Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show hejianet <hejianet@gmail.com> - 2016-09-21 19:10 +0200
            Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show Marcelo <marcelo.leitner@gmail.com> - 2016-09-21 20:30 +0200
              Re: [RFC PATCH v3 2/7] proc: Reduce cache miss in  {snmp,netstat}_seq_show hejianet <hejianet@gmail.com> - 2016-09-22 07:40 +0200
  [RFC PATCH v3 6/7] ipv6: Remove useless parameter in __snmp6_fill_statsdev Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
  [RFC PATCH v3 5/7] proc: Reduce cache miss in xfrm_statistics_seq_show Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
  [RFC PATCH v3 1/7] net:snmp: Introduce generic batch interfaces for snmp_get_cpu_field{,64} Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
  [RFC PATCH v3 3/7] proc: Reduce cache miss in snmp6_seq_show Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200
    Re: [RFC PATCH v3 3/7] proc: Reduce cache miss in snmp6_seq_show Marcelo <marcelo.leitner@gmail.com> - 2016-09-12 21:10 +0200
      Re: [RFC PATCH v3 3/7] proc: Reduce cache miss in snmp6_seq_show hejianet <hejianet@gmail.com> - 2016-09-14 05:20 +0200
  [RFC PATCH v3 7/7] net: Suppress the "Comparison to NULL could be written" warning Jia He <hejianet@gmail.com> - 2016-09-09 08:40 +0200

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