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Commit 4eb41d10 authored by Christoph Lameter's avatar Christoph Lameter Committed by Tejun Heo
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this_cpu: Use this_cpu operations for SNMP statistics



SNMP statistic macros can be signficantly simplified.
This will also reduce code size if the arch supports these operations
in hardware.

Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent 30ed1a79
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+18 −32
Original line number Diff line number Diff line
@@ -137,44 +137,30 @@ struct linux_xfrm_mib {
#define SNMP_STAT_USRPTR(name)	(name[1])

#define SNMP_INC_STATS_BH(mib, field)	\
	(per_cpu_ptr(mib[0], raw_smp_processor_id())->mibs[field]++)
			__this_cpu_inc(mib[0]->mibs[field])
#define SNMP_INC_STATS_USER(mib, field)	\
	do { \
		per_cpu_ptr(mib[1], get_cpu())->mibs[field]++; \
		put_cpu(); \
	} while (0)
			this_cpu_inc(mib[1]->mibs[field])
#define SNMP_INC_STATS(mib, field)	\
	do { \
		per_cpu_ptr(mib[!in_softirq()], get_cpu())->mibs[field]++; \
		put_cpu(); \
	} while (0)
			this_cpu_inc(mib[!in_softirq()]->mibs[field])
#define SNMP_DEC_STATS(mib, field)	\
	do { \
		per_cpu_ptr(mib[!in_softirq()], get_cpu())->mibs[field]--; \
		put_cpu(); \
	} while (0)
#define SNMP_ADD_STATS(mib, field, addend) 	\
	do { \
		per_cpu_ptr(mib[!in_softirq()], get_cpu())->mibs[field] += addend; \
		put_cpu(); \
	} while (0)
			this_cpu_dec(mib[!in_softirq()]->mibs[field])
#define SNMP_ADD_STATS_BH(mib, field, addend)	\
	(per_cpu_ptr(mib[0], raw_smp_processor_id())->mibs[field] += addend)
			__this_cpu_add(mib[0]->mibs[field], addend)
#define SNMP_ADD_STATS_USER(mib, field, addend)	\
	do { \
		per_cpu_ptr(mib[1], get_cpu())->mibs[field] += addend; \
		put_cpu(); \
	} while (0)
			this_cpu_add(mib[1]->mibs[field], addend)
#define SNMP_UPD_PO_STATS(mib, basefield, addend)	\
	do { \
		__typeof__(mib[0]) ptr = per_cpu_ptr(mib[!in_softirq()], get_cpu());\
		__typeof__(mib[0]) ptr; \
		preempt_disable(); \
		ptr = this_cpu_ptr((mib)[!in_softirq()]); \
		ptr->mibs[basefield##PKTS]++; \
		ptr->mibs[basefield##OCTETS] += addend;\
		put_cpu(); \
		preempt_enable(); \
	} while (0)
#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend)	\
	do { \
		__typeof__(mib[0]) ptr = per_cpu_ptr(mib[!in_softirq()], raw_smp_processor_id());\
		__typeof__(mib[0]) ptr = \
			__this_cpu_ptr((mib)[!in_softirq()]); \
		ptr->mibs[basefield##PKTS]++; \
		ptr->mibs[basefield##OCTETS] += addend;\
	} while (0)