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perf probe: Add --max-probes option

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Add --max-probes option to change the maximum limit of
findable probe points per event, since inlined function can be
expanded into thousands of probe points. Default value is 128.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <20100421195640.24664.62984.stgit@localhost6.localdomain6>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu
2010-04-21 15:56:40 -04:00
committed by Arnaldo Carvalho de Melo
parent 5d1ee0413c
commit ef4a356574
6 changed files with 33 additions and 17 deletions
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6
tools/perf/util/probe-finder.h
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@@ -18,7 +18,8 @@ static inline int is_c_varname(const char *name)
#ifdef DWARF_SUPPORT
/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */
extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev,
struct kprobe_trace_event **tevs);
struct kprobe_trace_event **tevs,
int max_tevs);
/* Find a perf_probe_point from debuginfo */
extern int find_perf_probe_point(int fd, unsigned long addr,
@@ -32,7 +33,8 @@ extern int find_line_range(int fd, struct line_range *lr);
struct probe_finder {
struct perf_probe_event *pev; /* Target probe event */
struct kprobe_trace_event *tevs; /* Result trace events */
int ntevs; /* number of trace events */
int ntevs; /* Number of trace events */
int max_tevs; /* Max number of trace events */
/* For function searching */
int lno; /* Line number */