This source file includes following definitions.
- not_visible
- perf_msr_probe
1
2 #include <linux/export.h>
3 #include <linux/types.h>
4 #include <linux/bits.h>
5 #include "probe.h"
6
7 static umode_t
8 not_visible(struct kobject *kobj, struct attribute *attr, int i)
9 {
10 return 0;
11 }
12
13 unsigned long
14 perf_msr_probe(struct perf_msr *msr, int cnt, bool zero, void *data)
15 {
16 unsigned long avail = 0;
17 unsigned int bit;
18 u64 val;
19
20 if (cnt >= BITS_PER_LONG)
21 return 0;
22
23 for (bit = 0; bit < cnt; bit++) {
24 if (!msr[bit].no_check) {
25 struct attribute_group *grp = msr[bit].grp;
26
27 grp->is_visible = not_visible;
28
29 if (msr[bit].test && !msr[bit].test(bit, data))
30 continue;
31
32 if (rdmsrl_safe(msr[bit].msr, &val))
33 continue;
34
35 if (!zero && !val)
36 continue;
37
38 grp->is_visible = NULL;
39 }
40 avail |= BIT(bit);
41 }
42
43 return avail;
44 }
45 EXPORT_SYMBOL_GPL(perf_msr_probe);