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path: root/kernel/trace/trace_events_inject.c
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Diffstat (limited to 'kernel/trace/trace_events_inject.c')
-rw-r--r--kernel/trace/trace_events_inject.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/trace/trace_events_inject.c b/kernel/trace/trace_events_inject.c
index c188045c5f97..d6b4935a78c0 100644
--- a/kernel/trace/trace_events_inject.c
+++ b/kernel/trace/trace_events_inject.c
@@ -168,10 +168,14 @@ static void *trace_alloc_entry(struct trace_event_call *call, int *size)
continue;
if (field->filter_type == FILTER_STATIC_STRING)
continue;
- if (field->filter_type == FILTER_DYN_STRING) {
+ if (field->filter_type == FILTER_DYN_STRING ||
+ field->filter_type == FILTER_RDYN_STRING) {
u32 *str_item;
int str_loc = entry_size & 0xffff;
+ if (field->filter_type == FILTER_RDYN_STRING)
+ str_loc -= field->offset + field->size;
+
str_item = (u32 *)(entry + field->offset);
*str_item = str_loc; /* string length is 0. */
} else {
@@ -214,7 +218,8 @@ static int parse_entry(char *str, struct trace_event_call *call, void **pentry)
if (field->filter_type == FILTER_STATIC_STRING) {
strlcpy(entry + field->offset, addr, field->size);
- } else if (field->filter_type == FILTER_DYN_STRING) {
+ } else if (field->filter_type == FILTER_DYN_STRING ||
+ field->filter_type == FILTER_RDYN_STRING) {
int str_len = strlen(addr) + 1;
int str_loc = entry_size & 0xffff;
u32 *str_item;
@@ -229,6 +234,8 @@ static int parse_entry(char *str, struct trace_event_call *call, void **pentry)
strlcpy(entry + (entry_size - str_len), addr, str_len);
str_item = (u32 *)(entry + field->offset);
+ if (field->filter_type == FILTER_RDYN_STRING)
+ str_loc -= field->offset + field->size;
*str_item = (str_len << 16) | str_loc;
} else {
char **paddr;