summaryrefslogtreecommitdiffstats
path: root/stapprobes.3stap.in
diff options
context:
space:
mode:
Diffstat (limited to 'stapprobes.3stap.in')
-rw-r--r--stapprobes.3stap.in12
1 files changed, 9 insertions, 3 deletions
diff --git a/stapprobes.3stap.in b/stapprobes.3stap.in
index dbd77ce4..0e1bd66f 100644
--- a/stapprobes.3stap.in
+++ b/stapprobes.3stap.in
@@ -341,9 +341,15 @@ pointers (char *) may be copied to systemtap string values using the
.IR kernel_string " or " user_string
functions.
.TP
-$var\->field
-traversal to a structure's field. The indirection operator
-may be repeated to follow more levels of pointers.
+$var\->field traversal via a structure's or a pointer's field. This
+generalized indirection operator may be repeated to follow more
+levels. Note that the
+.IR .
+operator is not used for plain structure
+members, only
+.IR \->
+for both purposes. (This is because "." is reserved for string
+concatenation.)
.TP
$return
is available in return probes only for functions that are declared