From 7f11532c587bdb85924929c4f4d9750761c78562 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 15 Jan 2016 10:47:14 +0000 Subject: kernel: compile out SNMP MIB related counting if debloat-proc is active - improves network stack performance Signed-off-by: Felix Fietkau SVN-Revision: 48239 --- .../generic/patches-4.4/902-debloat_proc.patch | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'target/linux/generic/patches-4.4/902-debloat_proc.patch') diff --git a/target/linux/generic/patches-4.4/902-debloat_proc.patch b/target/linux/generic/patches-4.4/902-debloat_proc.patch index 6568836b2c..0740e9693b 100644 --- a/target/linux/generic/patches-4.4/902-debloat_proc.patch +++ b/target/linux/generic/patches-4.4/902-debloat_proc.patch @@ -339,3 +339,47 @@ remove_proc_entry("dev", net->proc_net); } +--- a/include/net/snmp.h ++++ b/include/net/snmp.h +@@ -123,6 +123,30 @@ struct linux_xfrm_mib { + #define DECLARE_SNMP_STAT(type, name) \ + extern __typeof__(type) __percpu *name + ++#ifdef CONFIG_PROC_STRIPPED ++#define SNMP_INC_STATS_BH(mib, field) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_INC_STATS_USER(mib, field) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_INC_STATS(mib, field) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_DEC_STATS(mib, field) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_ADD_STATS_BH(mib, field, addend) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_ADD_STATS_USER(mib, field, addend) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_ADD_STATS(mib, field, addend) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_UPD_PO_STATS(mib, basefield, addend) \ ++ do { (void) mib->mibs[0]; } while(0) ++#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \ ++ do { (void) mib->mibs[0]; } while(0) ++ ++#else ++ + #define SNMP_INC_STATS_BH(mib, field) \ + __this_cpu_inc(mib->mibs[field]) + +@@ -159,8 +183,9 @@ struct linux_xfrm_mib { + __this_cpu_add(ptr[basefield##OCTETS], addend); \ + } while (0) + ++#endif + +-#if BITS_PER_LONG==32 ++#if (BITS_PER_LONG==32) && !defined(CONFIG_PROC_STRIPPED) + + #define SNMP_ADD_STATS64_BH(mib, field, addend) \ + do { \ -- cgit v1.2.3