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| author | Felix Fietkau <nbd@openwrt.org> | 2016-01-15 10:47:14 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2016-01-15 10:47:14 +0000 |
| commit | 7f11532c587bdb85924929c4f4d9750761c78562 (patch) | |
| tree | 67d3a5cb5cdaa93feb25a1089af84bf91da1fad5 /target/linux/generic/patches-4.4 | |
| parent | 1133101bc8b302b48240b3acbc6046ef7c74860d (diff) | |
| download | upstream-7f11532c587bdb85924929c4f4d9750761c78562.tar.gz upstream-7f11532c587bdb85924929c4f4d9750761c78562.tar.bz2 upstream-7f11532c587bdb85924929c4f4d9750761c78562.zip | |
kernel: compile out SNMP MIB related counting if debloat-proc is active - improves network stack performance
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48239
Diffstat (limited to 'target/linux/generic/patches-4.4')
| -rw-r--r-- | target/linux/generic/patches-4.4/902-debloat_proc.patch | 44 |
1 files changed, 44 insertions, 0 deletions
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 { \ |