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Kirill Smelkov
bcc
Commits
18d3814c
Commit
18d3814c
authored
6 years ago
by
4ast
Committed by
GitHub
6 years ago
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Merge pull request #1669 from iovisor/yhs_dev
fix compiler warning
parents
ca3bd8ae
61130a16
Changes
1
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1 changed file
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4 additions
and
4 deletions
+4
-4
src/cc/perf_reader.c
src/cc/perf_reader.c
+4
-4
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src/cc/perf_reader.c
View file @
18d3814c
...
@@ -145,19 +145,19 @@ static void parse_sw(struct perf_reader *reader, void *data, int size) {
...
@@ -145,19 +145,19 @@ static void parse_sw(struct perf_reader *reader, void *data, int size) {
reader
->
raw_cb
(
reader
->
cb_cookie
,
raw
->
data
,
raw
->
size
);
reader
->
raw_cb
(
reader
->
cb_cookie
,
raw
->
data
,
raw
->
size
);
}
}
static
uint64_t
read_data_head
(
struct
perf_event_mmap_page
*
perf_header
)
{
static
uint64_t
read_data_head
(
volatile
struct
perf_event_mmap_page
*
perf_header
)
{
uint64_t
data_head
=
*
((
volatile
uint64_t
*
)
&
perf_header
->
data_head
)
;
uint64_t
data_head
=
perf_header
->
data_head
;
asm
volatile
(
""
:::
"memory"
);
asm
volatile
(
""
:::
"memory"
);
return
data_head
;
return
data_head
;
}
}
static
void
write_data_tail
(
struct
perf_event_mmap_page
*
perf_header
,
uint64_t
data_tail
)
{
static
void
write_data_tail
(
volatile
struct
perf_event_mmap_page
*
perf_header
,
uint64_t
data_tail
)
{
asm
volatile
(
""
:::
"memory"
);
asm
volatile
(
""
:::
"memory"
);
perf_header
->
data_tail
=
data_tail
;
perf_header
->
data_tail
=
data_tail
;
}
}
void
perf_reader_event_read
(
struct
perf_reader
*
reader
)
{
void
perf_reader_event_read
(
struct
perf_reader
*
reader
)
{
struct
perf_event_mmap_page
*
perf_header
=
reader
->
base
;
volatile
struct
perf_event_mmap_page
*
perf_header
=
reader
->
base
;
uint64_t
buffer_size
=
(
uint64_t
)
reader
->
page_size
*
reader
->
page_cnt
;
uint64_t
buffer_size
=
(
uint64_t
)
reader
->
page_size
*
reader
->
page_cnt
;
uint64_t
data_head
;
uint64_t
data_head
;
uint8_t
*
base
=
(
uint8_t
*
)
reader
->
base
+
reader
->
page_size
;
uint8_t
*
base
=
(
uint8_t
*
)
reader
->
base
+
reader
->
page_size
;
...
...
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