mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-15 05:11:32 +00:00
perf probe: Use perf_probe_event.target instead of passing as an argument
Use perf_probe_event.target field for the target binary instead of passing it as an argument. 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/20150508010328.24812.67887.stgit@localhost.localdomain Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu
Arnaldo Carvalho de Melo
parent
598adc5c9c
commit
442255215c
@ -478,7 +478,6 @@ __cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused)
|
||||
|
||||
ret = show_available_vars(params.events, params.nevents,
|
||||
params.max_probe_points,
|
||||
params.target,
|
||||
params.filter,
|
||||
params.show_ext_vars);
|
||||
if (ret < 0)
|
||||
|
||||
@ -344,15 +344,14 @@ out:
|
||||
|
||||
static int get_alternative_probe_event(struct debuginfo *dinfo,
|
||||
struct perf_probe_event *pev,
|
||||
struct perf_probe_point *tmp,
|
||||
const char *target)
|
||||
struct perf_probe_point *tmp)
|
||||
{
|
||||
int ret;
|
||||
|
||||
memcpy(tmp, &pev->point, sizeof(*tmp));
|
||||
memset(&pev->point, 0, sizeof(pev->point));
|
||||
ret = find_alternative_probe_point(dinfo, tmp, &pev->point,
|
||||
target, pev->uprobes);
|
||||
pev->target, pev->uprobes);
|
||||
if (ret < 0)
|
||||
memcpy(&pev->point, tmp, sizeof(*tmp));
|
||||
|
||||
@ -601,15 +600,14 @@ static int post_process_probe_trace_events(struct probe_trace_event *tevs,
|
||||
/* 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, const char *target)
|
||||
int max_tevs)
|
||||
{
|
||||
bool need_dwarf = perf_probe_event_need_dwarf(pev);
|
||||
struct perf_probe_point tmp;
|
||||
struct debuginfo *dinfo;
|
||||
int ntevs, ret = 0;
|
||||
|
||||
dinfo = open_debuginfo(target, !need_dwarf);
|
||||
|
||||
dinfo = open_debuginfo(pev->target, !need_dwarf);
|
||||
if (!dinfo) {
|
||||
if (need_dwarf)
|
||||
return -ENOENT;
|
||||
@ -622,7 +620,7 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
|
||||
ntevs = debuginfo__find_trace_events(dinfo, pev, tevs, max_tevs);
|
||||
|
||||
if (ntevs == 0) { /* Not found, retry with an alternative */
|
||||
ret = get_alternative_probe_event(dinfo, pev, &tmp, target);
|
||||
ret = get_alternative_probe_event(dinfo, pev, &tmp);
|
||||
if (!ret) {
|
||||
ntevs = debuginfo__find_trace_events(dinfo, pev,
|
||||
tevs, max_tevs);
|
||||
@ -640,7 +638,7 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
|
||||
if (ntevs > 0) { /* Succeeded to find trace events */
|
||||
pr_debug("Found %d probe_trace_events.\n", ntevs);
|
||||
ret = post_process_probe_trace_events(*tevs, ntevs,
|
||||
target, pev->uprobes);
|
||||
pev->target, pev->uprobes);
|
||||
if (ret < 0 || ret == ntevs) {
|
||||
clear_probe_trace_events(*tevs, ntevs);
|
||||
zfree(tevs);
|
||||
@ -824,7 +822,7 @@ int show_line_range(struct line_range *lr, const char *module, bool user)
|
||||
static int show_available_vars_at(struct debuginfo *dinfo,
|
||||
struct perf_probe_event *pev,
|
||||
int max_vls, struct strfilter *_filter,
|
||||
bool externs, const char *target)
|
||||
bool externs)
|
||||
{
|
||||
char *buf;
|
||||
int ret, i, nvars;
|
||||
@ -841,7 +839,7 @@ static int show_available_vars_at(struct debuginfo *dinfo,
|
||||
ret = debuginfo__find_available_vars_at(dinfo, pev, &vls,
|
||||
max_vls, externs);
|
||||
if (!ret) { /* Not found, retry with an alternative */
|
||||
ret = get_alternative_probe_event(dinfo, pev, &tmp, target);
|
||||
ret = get_alternative_probe_event(dinfo, pev, &tmp);
|
||||
if (!ret) {
|
||||
ret = debuginfo__find_available_vars_at(dinfo, pev,
|
||||
&vls, max_vls, externs);
|
||||
@ -891,8 +889,7 @@ end:
|
||||
|
||||
/* Show available variables on given probe point */
|
||||
int show_available_vars(struct perf_probe_event *pevs, int npevs,
|
||||
int max_vls, const char *module,
|
||||
struct strfilter *_filter, bool externs)
|
||||
int max_vls, struct strfilter *_filter, bool externs)
|
||||
{
|
||||
int i, ret = 0;
|
||||
struct debuginfo *dinfo;
|
||||
@ -901,7 +898,7 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
dinfo = open_debuginfo(module, false);
|
||||
dinfo = open_debuginfo(pevs->target, false);
|
||||
if (!dinfo) {
|
||||
ret = -ENOENT;
|
||||
goto out;
|
||||
@ -911,7 +908,7 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
|
||||
|
||||
for (i = 0; i < npevs && ret >= 0; i++)
|
||||
ret = show_available_vars_at(dinfo, &pevs[i], max_vls, _filter,
|
||||
externs, module);
|
||||
externs);
|
||||
|
||||
debuginfo__delete(dinfo);
|
||||
out:
|
||||
@ -931,8 +928,7 @@ find_perf_probe_point_from_dwarf(struct probe_trace_point *tp __maybe_unused,
|
||||
|
||||
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,
|
||||
const char *target __maybe_unused)
|
||||
int max_tevs __maybe_unused)
|
||||
{
|
||||
if (perf_probe_event_need_dwarf(pev)) {
|
||||
pr_warning("Debuginfo-analysis is not supported.\n");
|
||||
@ -952,7 +948,6 @@ int show_line_range(struct line_range *lr __maybe_unused,
|
||||
|
||||
int show_available_vars(struct perf_probe_event *pevs __maybe_unused,
|
||||
int npevs __maybe_unused, int max_vls __maybe_unused,
|
||||
const char *module __maybe_unused,
|
||||
struct strfilter *filter __maybe_unused,
|
||||
bool externs __maybe_unused)
|
||||
{
|
||||
@ -2520,7 +2515,7 @@ void __weak arch__fix_tev_from_maps(struct perf_probe_event *pev __maybe_unused,
|
||||
*/
|
||||
static int find_probe_trace_events_from_map(struct perf_probe_event *pev,
|
||||
struct probe_trace_event **tevs,
|
||||
int max_tevs, const char *target)
|
||||
int max_tevs)
|
||||
{
|
||||
struct map *map = NULL;
|
||||
struct ref_reloc_sym *reloc_sym = NULL;
|
||||
@ -2531,7 +2526,7 @@ static int find_probe_trace_events_from_map(struct perf_probe_event *pev,
|
||||
int num_matched_functions;
|
||||
int ret, i;
|
||||
|
||||
map = get_target_map(target, pev->uprobes);
|
||||
map = get_target_map(pev->target, pev->uprobes);
|
||||
if (!map) {
|
||||
ret = -EINVAL;
|
||||
goto out;
|
||||
@ -2544,12 +2539,12 @@ static int find_probe_trace_events_from_map(struct perf_probe_event *pev,
|
||||
num_matched_functions = find_probe_functions(map, pp->function);
|
||||
if (num_matched_functions == 0) {
|
||||
pr_err("Failed to find symbol %s in %s\n", pp->function,
|
||||
target ? : "kernel");
|
||||
pev->target ? : "kernel");
|
||||
ret = -ENOENT;
|
||||
goto out;
|
||||
} else if (num_matched_functions > max_tevs) {
|
||||
pr_err("Too many functions matched in %s\n",
|
||||
target ? : "kernel");
|
||||
pev->target ? : "kernel");
|
||||
ret = -E2BIG;
|
||||
goto out;
|
||||
}
|
||||
@ -2597,8 +2592,9 @@ static int find_probe_trace_events_from_map(struct perf_probe_event *pev,
|
||||
tp->offset = pp->offset;
|
||||
}
|
||||
tp->retprobe = pp->retprobe;
|
||||
if (target)
|
||||
tev->point.module = strdup_or_goto(target, nomem_out);
|
||||
if (pev->target)
|
||||
tev->point.module = strdup_or_goto(pev->target,
|
||||
nomem_out);
|
||||
tev->uprobes = pev->uprobes;
|
||||
tev->nargs = pev->nargs;
|
||||
if (tev->nargs) {
|
||||
@ -2639,13 +2635,13 @@ 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, const char *target)
|
||||
int max_tevs)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (pev->uprobes && !pev->group) {
|
||||
/* Replace group name if not given */
|
||||
ret = convert_exec_to_group(target, &pev->group);
|
||||
ret = convert_exec_to_group(pev->target, &pev->group);
|
||||
if (ret != 0) {
|
||||
pr_warning("Failed to make a group name.\n");
|
||||
return ret;
|
||||
@ -2653,17 +2649,17 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev,
|
||||
}
|
||||
|
||||
if (arch__prefers_symtab() && !perf_probe_event_need_dwarf(pev)) {
|
||||
ret = find_probe_trace_events_from_map(pev, tevs, max_tevs, target);
|
||||
ret = find_probe_trace_events_from_map(pev, tevs, max_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, target);
|
||||
ret = try_to_find_probe_trace_events(pev, tevs, max_tevs);
|
||||
if (ret != 0)
|
||||
return ret; /* Found in debuginfo or got an error */
|
||||
|
||||
return find_probe_trace_events_from_map(pev, tevs, max_tevs, target);
|
||||
return find_probe_trace_events_from_map(pev, tevs, max_tevs);
|
||||
}
|
||||
|
||||
struct __event_package {
|
||||
@ -2696,8 +2692,7 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
|
||||
/* Convert with or without debuginfo */
|
||||
ret = convert_to_probe_trace_events(pkgs[i].pev,
|
||||
&pkgs[i].tevs,
|
||||
max_tevs,
|
||||
pkgs[i].pev->target);
|
||||
max_tevs);
|
||||
if (ret < 0)
|
||||
goto end;
|
||||
pkgs[i].ntevs = ret;
|
||||
|
||||
@ -131,8 +131,8 @@ extern int show_perf_probe_events(struct strfilter *filter);
|
||||
extern int show_line_range(struct line_range *lr, const char *module,
|
||||
bool user);
|
||||
extern int show_available_vars(struct perf_probe_event *pevs, int npevs,
|
||||
int max_probe_points, const char *module,
|
||||
struct strfilter *filter, bool externs);
|
||||
int max_probe_points, struct strfilter *filter,
|
||||
bool externs);
|
||||
extern int show_available_funcs(const char *module, struct strfilter *filter,
|
||||
bool user);
|
||||
bool arch__prefers_symtab(void);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user