95 PMU_FORMAT_ATTR(event, "config:0-63");
111 static int msr_event_init(struct perf_event *event)  in msr_event_init()  argument
113 	u64 cfg = event->attr.config;  in msr_event_init()
115 	if (event->attr.type != event->pmu->type)  in msr_event_init()
122 	if (event->attr.exclude_user   ||  in msr_event_init()
123 	    event->attr.exclude_kernel ||  in msr_event_init()
124 	    event->attr.exclude_hv     ||  in msr_event_init()
125 	    event->attr.exclude_idle   ||  in msr_event_init()
126 	    event->attr.exclude_host   ||  in msr_event_init()
127 	    event->attr.exclude_guest  ||  in msr_event_init()
128 	    event->attr.sample_period) /* no sampling */  in msr_event_init()
134 	event->hw.idx = -1;  in msr_event_init()
135 	event->hw.event_base = msr[cfg].msr;  in msr_event_init()
136 	event->hw.config = cfg;  in msr_event_init()
141 static inline u64 msr_read_counter(struct perf_event *event)  in msr_read_counter()  argument
145 	if (event->hw.event_base)  in msr_read_counter()
146 		rdmsrl(event->hw.event_base, now);  in msr_read_counter()
152 static void msr_event_update(struct perf_event *event)  in msr_event_update()  argument
159 	prev = local64_read(&event->hw.prev_count);  in msr_event_update()
160 	now = msr_read_counter(event);  in msr_event_update()
162 	if (local64_cmpxchg(&event->hw.prev_count, prev, now) != prev)  in msr_event_update()
166 	if (unlikely(event->hw.event_base == MSR_SMI_COUNT))  in msr_event_update()
169 	local64_add(now - prev, &event->count);  in msr_event_update()
172 static void msr_event_start(struct perf_event *event, int flags)  in msr_event_start()  argument
176 	now = msr_read_counter(event);  in msr_event_start()
177 	local64_set(&event->hw.prev_count, now);  in msr_event_start()
180 static void msr_event_stop(struct perf_event *event, int flags)  in msr_event_stop()  argument
182 	msr_event_update(event);  in msr_event_stop()
185 static void msr_event_del(struct perf_event *event, int flags)  in msr_event_del()  argument
187 	msr_event_stop(event, PERF_EF_UPDATE);  in msr_event_del()
190 static int msr_event_add(struct perf_event *event, int flags)  in msr_event_add()  argument
193 		msr_event_start(event, flags);  in msr_event_add()