diff options
Diffstat (limited to 'Documentation/trace/kprobetrace.txt')
| -rw-r--r-- | Documentation/trace/kprobetrace.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/trace/kprobetrace.txt b/Documentation/trace/kprobetrace.txt index 5ea85059db3b..1a3a3d6bc2a8 100644 --- a/Documentation/trace/kprobetrace.txt +++ b/Documentation/trace/kprobetrace.txt @@ -24,7 +24,7 @@ current_tracer. Instead of that, add probe points via Synopsis of kprobe_events ------------------------- p[:[GRP/]EVENT] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS] : Set a probe - r[:[GRP/]EVENT] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe + r[MAXACTIVE][:[GRP/]EVENT] [MOD:]SYM[+0] [FETCHARGS] : Set a return probe -:[GRP/]EVENT : Clear a probe GRP : Group name. If omitted, use "kprobes" for it. @@ -33,6 +33,9 @@ Synopsis of kprobe_events MOD : Module name which has given SYM. SYM[+offs] : Symbol+offset where the probe is inserted. MEMADDR : Address where the probe is inserted. + MAXACTIVE : Maximum number of instances of the specified function that + can be probed simultaneously, or 0 for the default value + as defined in Documentation/kprobes.txt section 1.3.1. FETCHARGS : Arguments. Each probe can have up to 128 args. %REG : Fetch register REG |