1LIBPFM(3)                  Linux Programmer's Manual                 LIBPFM(3)
2
3
4

NAME

6       libpfm_amd64_fam19h_zen4 - support for AMD64 Family 19h processors
7

SYNOPSIS

9       #include <perfmon/pfmlib.h>
10
11       PMU name: amd64_fam19h_zen4
12       PMU desc: AMD64 Fam19h Zen4
13
14

DESCRIPTION

16       The library supports AMD Family 19h processors Zen4 core PMU in both 32
17       and 64-bit modes.
18
19

MODIFIERS

21       The following modifiers are supported on AMD64  Family  19h  Zen4  core
22       PMU:
23
24       u      Measure  at  user level which includes privilege levels 1, 2, 3.
25              This corresponds to PFM_PLM3.  This is a boolean modifier.
26
27       k      Measure at kernel level which includes privilege level  0.  This
28              corresponds to PFM_PLM0.  This is a boolean modifier.
29
30       h      Measure  at while executing in host mode (when using virtualiza‐
31              tion). This corresponds to PFM_PLMH.  This modifier is available
32              starting with Fam10h. This is a boolean modifier.
33
34       g      Measure at while executing in guest mode (when using virtualiza‐
35              tion). This modifier is available starting with Fam10h. This  is
36              a boolean modifier.
37
38       i      Invert  the meaning of the event. The counter will now count cy‐
39              cles in which the event is not occurring. This is a boolean mod‐
40              ifier
41
42       e      Enable  edge  detection,  i.e., count only when there is a state
43              transition. This is a boolean modifier.
44
45       c      Set the counter mask value. The mask acts as  a  threshold.  The
46              counter  will  count the number of cycles in which the number of
47              occurrences of the event is greater or equal to  the  threshold.
48              This is an integer modifier with values in the range [0:255].
49
50

AUTHORS

52       Stephane Eranian
53
54
55
56                                December, 2022                       LIBPFM(3)