blob: 62c6f67f1bbe665c5f5a85103b30e269ce6239d6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
// SPDX-License-Identifier: GPL-2.0
/*
* VPA support
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include "../../util/evlist.h"
#include "../../util/debug.h"
#include "../../util/auxtrace.h"
#include "../../util/powerpc-vpadtl.h"
#include "../../util/record.h"
#include <internal/lib.h> // page_size
#define KiB(x) ((x) * 1024)
static int
powerpc_vpadtl_recording_options(struct auxtrace_record *ar __maybe_unused,
struct evlist *evlist __maybe_unused,
struct record_opts *opts)
{
opts->full_auxtrace = true;
/*
* Set auxtrace_mmap_pages to minimum
* two pages
*/
if (!opts->auxtrace_mmap_pages) {
opts->auxtrace_mmap_pages = KiB(128) / page_size;
if (opts->mmap_pages == UINT_MAX)
opts->mmap_pages = KiB(256) / page_size;
}
return 0;
}
static size_t powerpc_vpadtl_info_priv_size(struct auxtrace_record *itr __maybe_unused,
struct evlist *evlist __maybe_unused)
{
return VPADTL_AUXTRACE_PRIV_SIZE;
}
static int
powerpc_vpadtl_info_fill(struct auxtrace_record *itr __maybe_unused,
struct perf_session *session __maybe_unused,
struct perf_record_auxtrace_info *auxtrace_info,
size_t priv_size __maybe_unused)
{
auxtrace_info->type = PERF_AUXTRACE_VPA_DTL;
return 0;
}
static void powerpc_vpadtl_free(struct auxtrace_record *itr)
{
free(itr);
}
static u64 powerpc_vpadtl_reference(struct auxtrace_record *itr __maybe_unused)
{
return 0;
}
struct auxtrace_record *auxtrace_record__init(struct evlist *evlist,
int *err)
{
struct auxtrace_record *aux;
struct evsel *pos;
int found = 0;
evlist__for_each_entry(evlist, pos) {
if (strstarts(pos->name, "vpa_dtl")) {
found = 1;
pos->needs_auxtrace_mmap = true;
break;
}
}
if (!found)
return NULL;
/*
* To obtain the auxtrace buffer file descriptor, the auxtrace event
* must come first.
*/
evlist__to_front(pos->evlist, pos);
aux = zalloc(sizeof(*aux));
if (aux == NULL) {
pr_debug("aux record is NULL\n");
*err = -ENOMEM;
return NULL;
}
aux->recording_options = powerpc_vpadtl_recording_options;
aux->info_priv_size = powerpc_vpadtl_info_priv_size;
aux->info_fill = powerpc_vpadtl_info_fill;
aux->free = powerpc_vpadtl_free;
aux->reference = powerpc_vpadtl_reference;
return aux;
}
|
