116 PMU_FORMAT_ATTR(event, "config:0-63");
132 static int msr_event_init(struct perf_event *event)  in msr_event_init()  argument
134 	u64 cfg = event->attr.config;  in msr_event_init()
136 	if (event->attr.type != event->pmu->type)  in msr_event_init()
143 	if (event->attr.exclude_user   ||  in msr_event_init()
144 	    event->attr.exclude_kernel ||  in msr_event_init()
145 	    event->attr.exclude_hv     ||  in msr_event_init()
146 	    event->attr.exclude_idle   ||  in msr_event_init()
147 	    event->attr.exclude_host   ||  in msr_event_init()
148 	    event->attr.exclude_guest  ||  in msr_event_init()
149 	    event->attr.sample_period) /* no sampling */  in msr_event_init()
155 	event->hw.idx = -1;  in msr_event_init()
156 	event->hw.event_base = msr[cfg].msr;  in msr_event_init()
157 	event->hw.config = cfg;  in msr_event_init()
162 static inline u64 msr_read_counter(struct perf_event *event)  in msr_read_counter()  argument
166 	if (event->hw.event_base)  in msr_read_counter()
167 		rdmsrl(event->hw.event_base, now);  in msr_read_counter()
173 static void msr_event_update(struct perf_event *event)  in msr_event_update()  argument
180 	prev = local64_read(&event->hw.prev_count);  in msr_event_update()
181 	now = msr_read_counter(event);  in msr_event_update()
183 	if (local64_cmpxchg(&event->hw.prev_count, prev, now) != prev)  in msr_event_update()
187 	if (unlikely(event->hw.event_base == MSR_SMI_COUNT))  in msr_event_update()
190 	local64_add(delta, &event->count);  in msr_event_update()
193 static void msr_event_start(struct perf_event *event, int flags)  in msr_event_start()  argument
197 	now = msr_read_counter(event);  in msr_event_start()
198 	local64_set(&event->hw.prev_count, now);  in msr_event_start()
201 static void msr_event_stop(struct perf_event *event, int flags)  in msr_event_stop()  argument
203 	msr_event_update(event);  in msr_event_stop()
206 static void msr_event_del(struct perf_event *event, int flags)  in msr_event_del()  argument
208 	msr_event_stop(event, PERF_EF_UPDATE);  in msr_event_del()
211 static int msr_event_add(struct perf_event *event, int flags)  in msr_event_add()  argument
214 		msr_event_start(event, flags);  in msr_event_add()