perf probe: Introduce probe_conf global configs
Introduce probe_conf global configuration parameters for probe-event and
probe-finder, and removes related parameters from APIs.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150508010330.24812.21095.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index b8fd48d..a7deda4 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -51,6 +51,7 @@
#define PERFPROBE_GROUP "probe"
bool probe_event_dry_run; /* Dry run flag */
+struct probe_conf probe_conf;
#define semantic_error(msg ...) pr_err("Semantic error :" msg)
@@ -599,8 +600,7 @@
/* Try to find perf_probe_event with debuginfo */
static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
- struct probe_trace_event **tevs,
- int max_tevs)
+ struct probe_trace_event **tevs)
{
bool need_dwarf = perf_probe_event_need_dwarf(pev);
struct perf_probe_point tmp;
@@ -617,13 +617,12 @@
pr_debug("Try to find probe point from debuginfo.\n");
/* Searching trace events corresponding to a probe event */
- ntevs = debuginfo__find_trace_events(dinfo, pev, tevs, max_tevs);
+ ntevs = debuginfo__find_trace_events(dinfo, pev, tevs);
if (ntevs == 0) { /* Not found, retry with an alternative */
ret = get_alternative_probe_event(dinfo, pev, &tmp);
if (!ret) {
- ntevs = debuginfo__find_trace_events(dinfo, pev,
- tevs, max_tevs);
+ ntevs = debuginfo__find_trace_events(dinfo, pev, tevs);
/*
* Write back to the original probe_event for
* setting appropriate (user given) event name
@@ -821,8 +820,7 @@
static int show_available_vars_at(struct debuginfo *dinfo,
struct perf_probe_event *pev,
- int max_vls, struct strfilter *_filter,
- bool externs)
+ struct strfilter *_filter)
{
char *buf;
int ret, i, nvars;
@@ -836,13 +834,12 @@
return -EINVAL;
pr_debug("Searching variables at %s\n", buf);
- ret = debuginfo__find_available_vars_at(dinfo, pev, &vls,
- max_vls, externs);
+ ret = debuginfo__find_available_vars_at(dinfo, pev, &vls);
if (!ret) { /* Not found, retry with an alternative */
ret = get_alternative_probe_event(dinfo, pev, &tmp);
if (!ret) {
ret = debuginfo__find_available_vars_at(dinfo, pev,
- &vls, max_vls, externs);
+ &vls);
/* Release the old probe_point */
clear_perf_probe_point(&tmp);
}
@@ -889,7 +886,7 @@
/* Show available variables on given probe point */
int show_available_vars(struct perf_probe_event *pevs, int npevs,
- int max_vls, struct strfilter *_filter, bool externs)
+ struct strfilter *_filter)
{
int i, ret = 0;
struct debuginfo *dinfo;
@@ -907,8 +904,7 @@
setup_pager();
for (i = 0; i < npevs && ret >= 0; i++)
- ret = show_available_vars_at(dinfo, &pevs[i], max_vls, _filter,
- externs);
+ ret = show_available_vars_at(dinfo, &pevs[i], _filter);
debuginfo__delete(dinfo);
out:
@@ -927,8 +923,7 @@
}
static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
- struct probe_trace_event **tevs __maybe_unused,
- int max_tevs __maybe_unused)
+ struct probe_trace_event **tevs __maybe_unused)
{
if (perf_probe_event_need_dwarf(pev)) {
pr_warning("Debuginfo-analysis is not supported.\n");
@@ -947,9 +942,8 @@
}
int show_available_vars(struct perf_probe_event *pevs __maybe_unused,
- int npevs __maybe_unused, int max_vls __maybe_unused,
- struct strfilter *filter __maybe_unused,
- bool externs __maybe_unused)
+ int npevs __maybe_unused,
+ struct strfilter *filter __maybe_unused)
{
pr_warning("Debuginfo-analysis is not supported.\n");
return -ENOSYS;
@@ -2514,8 +2508,7 @@
* Return an error or the number of found probe_trace_event
*/
static int find_probe_trace_events_from_map(struct perf_probe_event *pev,
- struct probe_trace_event **tevs,
- int max_tevs)
+ struct probe_trace_event **tevs)
{
struct map *map = NULL;
struct ref_reloc_sym *reloc_sym = NULL;
@@ -2542,7 +2535,7 @@
pev->target ? : "kernel");
ret = -ENOENT;
goto out;
- } else if (num_matched_functions > max_tevs) {
+ } else if (num_matched_functions > probe_conf.max_probes) {
pr_err("Too many functions matched in %s\n",
pev->target ? : "kernel");
ret = -E2BIG;
@@ -2634,8 +2627,7 @@
bool __weak arch__prefers_symtab(void) { return false; }
static int convert_to_probe_trace_events(struct perf_probe_event *pev,
- struct probe_trace_event **tevs,
- int max_tevs)
+ struct probe_trace_event **tevs)
{
int ret;
@@ -2649,17 +2641,17 @@
}
if (arch__prefers_symtab() && !perf_probe_event_need_dwarf(pev)) {
- ret = find_probe_trace_events_from_map(pev, tevs, max_tevs);
+ ret = find_probe_trace_events_from_map(pev, tevs);
if (ret > 0)
return ret; /* Found in symbol table */
}
/* Convert perf_probe_event with debuginfo */
- ret = try_to_find_probe_trace_events(pev, tevs, max_tevs);
+ ret = try_to_find_probe_trace_events(pev, tevs);
if (ret != 0)
return ret; /* Found in debuginfo or got an error */
- return find_probe_trace_events_from_map(pev, tevs, max_tevs);
+ return find_probe_trace_events_from_map(pev, tevs);
}
struct __event_package {
@@ -2668,8 +2660,7 @@
int ntevs;
};
-int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
- int max_tevs, bool force_add)
+int add_perf_probe_events(struct perf_probe_event *pevs, int npevs)
{
int i, j, ret;
struct __event_package *pkgs;
@@ -2691,8 +2682,7 @@
pkgs[i].pev = &pevs[i];
/* Convert with or without debuginfo */
ret = convert_to_probe_trace_events(pkgs[i].pev,
- &pkgs[i].tevs,
- max_tevs);
+ &pkgs[i].tevs);
if (ret < 0)
goto end;
pkgs[i].ntevs = ret;
@@ -2701,7 +2691,8 @@
/* Loop 2: add all events */
for (i = 0; i < npevs; i++) {
ret = __add_probe_trace_events(pkgs[i].pev, pkgs[i].tevs,
- pkgs[i].ntevs, force_add);
+ pkgs[i].ntevs,
+ probe_conf.force_add);
if (ret < 0)
break;
}