perf probe: Add basic module support
Add basic module probe support on perf probe. This introduces "--module
<MODNAME>" option to perf probe for putting probes and showing lines and
variables in the given module.
Currently, this supports only probing on running modules. Supporting off-line
module probing is the next step.
e.g.)
[show lines]
# ./perf probe --module drm -L drm_vblank_info
<drm_vblank_info:0>
0 int drm_vblank_info(struct seq_file *m, void *data)
1 {
struct drm_info_node *node = (struct drm_info_node *) m->private
3 struct drm_device *dev = node->minor->dev;
...
[show vars]
# ./perf probe --module drm -V drm_vblank_info:3
Available variables at drm_vblank_info:3
@<drm_vblank_info+20>
(unknown_type) data
struct drm_info_node* node
struct seq_file* m
[put a probe]
# ./perf probe --module drm drm_vblank_info:3 node m
Add new event:
probe:drm_vblank_info (on drm_vblank_info:3 with node m)
You can now use it on all perf tools, such as:
perf record -e probe:drm_vblank_info -aR sleep 1
[list probes]
# ./perf probe -l
probe:drm_vblank_info (on drm_vblank_info:3@drivers/gpu/drm/drm_info.c with ...
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20101021101341.3542.71638.stgit@ltc236.sdl.hitachi.co.jp>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Masami Hiramatsu
Arnaldo Carvalho de Melo
parent
fb8c5a56c7
commit
469b9b8848
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@ -16,9 +16,9 @@ or
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or
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'perf probe' --list
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or
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'perf probe' --line='FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]'
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'perf probe' [options] --line='FUNC[:RLN[+NUM|:RLN2]]|SRC:ALN[+NUM|:ALN2]'
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or
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'perf probe' [--externs] --vars='PROBEPOINT'
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'perf probe' [options] --vars='PROBEPOINT'
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DESCRIPTION
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-----------
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@ -33,6 +33,11 @@ OPTIONS
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--vmlinux=PATH::
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Specify vmlinux path which has debuginfo (Dwarf binary).
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-m::
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--module=MODNAME::
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Specify module name in which perf-probe searches probe points
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or lines.
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-s::
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--source=PATH::
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Specify path to kernel source.
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@ -57,6 +57,7 @@ static struct {
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struct perf_probe_event events[MAX_PROBES];
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struct strlist *dellist;
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struct line_range line_range;
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const char *target_module;
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int max_probe_points;
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} params;
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@ -162,8 +163,8 @@ static const char * const probe_usage[] = {
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"perf probe [<options>] --del '[GROUP:]EVENT' ...",
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"perf probe --list",
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#ifdef DWARF_SUPPORT
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"perf probe --line 'LINEDESC'",
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"perf probe [--externs] --vars 'PROBEPOINT'",
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"perf probe [<options>] --line 'LINEDESC'",
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"perf probe [<options>] --vars 'PROBEPOINT'",
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#endif
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NULL
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};
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@ -214,6 +215,8 @@ static const struct option options[] = {
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"file", "vmlinux pathname"),
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OPT_STRING('s', "source", &symbol_conf.source_prefix,
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"directory", "path to kernel source"),
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OPT_STRING('m', "module", ¶ms.target_module,
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"modname", "target module name"),
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#endif
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OPT__DRY_RUN(&probe_event_dry_run),
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OPT_INTEGER('\0', "max-probes", ¶ms.max_probe_points,
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@ -278,7 +281,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
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usage_with_options(probe_usage, options);
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}
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ret = show_line_range(¶ms.line_range);
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ret = show_line_range(¶ms.line_range, params.target_module);
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if (ret < 0)
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pr_err(" Error: Failed to show lines. (%d)\n", ret);
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return ret;
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@ -291,6 +294,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
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}
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ret = show_available_vars(params.events, params.nevents,
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params.max_probe_points,
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params.target_module,
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params.show_ext_vars);
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if (ret < 0)
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pr_err(" Error: Failed to show vars. (%d)\n", ret);
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@ -310,6 +314,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used)
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if (params.nevents) {
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ret = add_perf_probe_events(params.events, params.nevents,
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params.max_probe_points,
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params.target_module,
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params.force_add);
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if (ret < 0) {
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pr_err(" Error: Failed to add events. (%d)\n", ret);
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@ -215,6 +215,16 @@ struct symbol *map_groups__find_function_by_name(struct map_groups *self,
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return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter);
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}
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static inline
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struct symbol *machine__find_kernel_function_by_name(struct machine *self,
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const char *name,
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struct map **mapp,
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symbol_filter_t filter)
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{
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return map_groups__find_function_by_name(&self->kmaps, name, mapp,
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filter);
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}
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int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
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int verbose, FILE *fp);
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@ -74,10 +74,9 @@ static int e_snprintf(char *str, size_t size, const char *format, ...)
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static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
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static struct machine machine;
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/* Initialize symbol maps and path of vmlinux */
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/* Initialize symbol maps and path of vmlinux/modules */
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static int init_vmlinux(void)
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{
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struct dso *kernel;
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int ret;
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symbol_conf.sort_by_name = true;
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@ -91,33 +90,61 @@ static int init_vmlinux(void)
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goto out;
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}
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ret = machine__init(&machine, "/", 0);
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ret = machine__init(&machine, "", HOST_KERNEL_ID);
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if (ret < 0)
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goto out;
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kernel = dso__new_kernel(symbol_conf.vmlinux_name);
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if (kernel == NULL)
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die("Failed to create kernel dso.");
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ret = __machine__create_kernel_maps(&machine, kernel);
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if (ret < 0)
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pr_debug("Failed to create kernel maps.\n");
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if (machine__create_kernel_maps(&machine) < 0) {
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pr_debug("machine__create_kernel_maps ");
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goto out;
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}
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out:
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if (ret < 0)
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pr_warning("Failed to init vmlinux path.\n");
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return ret;
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}
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#ifdef DWARF_SUPPORT
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static int open_vmlinux(void)
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static struct symbol *__find_kernel_function_by_name(const char *name,
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struct map **mapp)
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{
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if (map__load(machine.vmlinux_maps[MAP__FUNCTION], NULL) < 0) {
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pr_debug("Failed to load kernel map.\n");
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return -EINVAL;
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return machine__find_kernel_function_by_name(&machine, name, mapp,
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NULL);
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}
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const char *kernel_get_module_path(const char *module)
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{
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struct dso *dso;
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if (module) {
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list_for_each_entry(dso, &machine.kernel_dsos, node) {
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if (strncmp(dso->short_name + 1, module,
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dso->short_name_len - 2) == 0)
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goto found;
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}
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pr_debug("Failed to find module %s.\n", module);
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return NULL;
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} else {
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dso = machine.vmlinux_maps[MAP__FUNCTION]->dso;
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if (dso__load_vmlinux_path(dso,
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machine.vmlinux_maps[MAP__FUNCTION], NULL) < 0) {
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pr_debug("Failed to load kernel map.\n");
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return NULL;
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}
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}
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pr_debug("Try to open %s\n", machine.vmlinux_maps[MAP__FUNCTION]->dso->long_name);
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return open(machine.vmlinux_maps[MAP__FUNCTION]->dso->long_name, O_RDONLY);
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found:
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return dso->long_name;
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}
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#ifdef DWARF_SUPPORT
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static int open_vmlinux(const char *module)
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{
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const char *path = kernel_get_module_path(module);
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if (!path) {
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pr_err("Failed to find path of %s module", module ?: "kernel");
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return -ENOENT;
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}
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pr_debug("Try to open %s\n", path);
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return open(path, O_RDONLY);
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}
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/*
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@ -125,20 +152,19 @@ static int open_vmlinux(void)
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* Currently only handles kprobes.
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*/
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static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
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struct perf_probe_point *pp)
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struct perf_probe_point *pp)
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{
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struct symbol *sym;
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int fd, ret = -ENOENT;
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struct map *map;
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u64 addr;
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int ret = -ENOENT;
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sym = map__find_symbol_by_name(machine.vmlinux_maps[MAP__FUNCTION],
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tp->symbol, NULL);
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sym = __find_kernel_function_by_name(tp->symbol, &map);
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if (sym) {
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fd = open_vmlinux();
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if (fd >= 0) {
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ret = find_perf_probe_point(fd,
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sym->start + tp->offset, pp);
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close(fd);
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}
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addr = map->unmap_ip(map, sym->start + tp->offset);
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pr_debug("try to find %s+%ld@%llx\n", tp->symbol,
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tp->offset, addr);
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ret = find_perf_probe_point((unsigned long)addr, pp);
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}
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if (ret <= 0) {
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pr_debug("Failed to find corresponding probes from "
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@ -156,12 +182,12 @@ static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
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/* Try to find perf_probe_event with debuginfo */
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static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
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struct probe_trace_event **tevs,
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int max_tevs)
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int max_tevs, const char *module)
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{
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bool need_dwarf = perf_probe_event_need_dwarf(pev);
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int fd, ntevs;
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fd = open_vmlinux();
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fd = open_vmlinux(module);
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if (fd < 0) {
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if (need_dwarf) {
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pr_warning("Failed to open debuginfo file.\n");
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@ -300,7 +326,7 @@ error:
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* Show line-range always requires debuginfo to find source file and
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* line number.
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*/
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int show_line_range(struct line_range *lr)
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int show_line_range(struct line_range *lr, const char *module)
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{
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int l = 1;
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struct line_node *ln;
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@ -313,7 +339,7 @@ int show_line_range(struct line_range *lr)
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if (ret < 0)
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return ret;
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fd = open_vmlinux();
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fd = open_vmlinux(module);
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if (fd < 0) {
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pr_warning("Failed to open debuginfo file.\n");
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return fd;
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@ -421,7 +447,7 @@ static int show_available_vars_at(int fd, struct perf_probe_event *pev,
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/* Show available variables on given probe point */
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int show_available_vars(struct perf_probe_event *pevs, int npevs,
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int max_vls, bool externs)
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int max_vls, const char *module, bool externs)
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{
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int i, fd, ret = 0;
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@ -429,7 +455,7 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
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if (ret < 0)
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return ret;
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fd = open_vmlinux();
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fd = open_vmlinux(module);
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if (fd < 0) {
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pr_warning("Failed to open debuginfo file.\n");
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return fd;
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@ -447,8 +473,15 @@ int show_available_vars(struct perf_probe_event *pevs, int npevs,
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#else /* !DWARF_SUPPORT */
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static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
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struct perf_probe_point *pp)
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struct perf_probe_point *pp)
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{
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struct symbol *sym;
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sym = __find_kernel_function_by_name(tp->symbol, NULL);
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if (!sym) {
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pr_err("Failed to find symbol %s in kernel.\n", tp->symbol);
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return -ENOENT;
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}
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pp->function = strdup(tp->symbol);
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if (pp->function == NULL)
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return -ENOMEM;
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@ -460,7 +493,7 @@ static int kprobe_convert_to_perf_probe(struct probe_trace_point *tp,
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static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
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struct probe_trace_event **tevs __unused,
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int max_tevs __unused)
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int max_tevs __unused, const char *mod __unused)
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{
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if (perf_probe_event_need_dwarf(pev)) {
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pr_warning("Debuginfo-analysis is not supported.\n");
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@ -469,14 +502,15 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
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return 0;
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}
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int show_line_range(struct line_range *lr __unused)
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int show_line_range(struct line_range *lr __unused, const char *module __unused)
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{
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pr_warning("Debuginfo-analysis is not supported.\n");
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return -ENOSYS;
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}
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int show_available_vars(struct perf_probe_event *pevs __unused,
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int npevs __unused, int max_probe_points __unused)
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int npevs __unused, int max_vls __unused,
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const char *module __unused, bool externs __unused)
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{
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pr_warning("Debuginfo-analysis is not supported.\n");
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return -ENOSYS;
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@ -1159,7 +1193,7 @@ error:
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}
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static int convert_to_perf_probe_event(struct probe_trace_event *tev,
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struct perf_probe_event *pev)
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struct perf_probe_event *pev)
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{
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char buf[64] = "";
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int i, ret;
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@ -1588,14 +1622,14 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
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static int convert_to_probe_trace_events(struct perf_probe_event *pev,
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struct probe_trace_event **tevs,
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int max_tevs)
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int max_tevs, const char *module)
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{
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struct symbol *sym;
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int ret = 0, i;
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struct probe_trace_event *tev;
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/* Convert perf_probe_event with debuginfo */
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ret = try_to_find_probe_trace_events(pev, tevs, max_tevs);
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ret = try_to_find_probe_trace_events(pev, tevs, max_tevs, module);
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if (ret != 0)
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return ret;
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@ -1644,8 +1678,7 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev,
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}
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/* Currently just checking function name from symbol map */
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sym = map__find_symbol_by_name(machine.vmlinux_maps[MAP__FUNCTION],
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tev->point.symbol, NULL);
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sym = __find_kernel_function_by_name(tev->point.symbol, NULL);
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if (!sym) {
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pr_warning("Kernel symbol \'%s\' not found.\n",
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tev->point.symbol);
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|
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@ -1668,7 +1701,7 @@ struct __event_package {
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};
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int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
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int max_tevs, bool force_add)
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int max_tevs, const char *module, bool force_add)
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{
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int i, j, ret;
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struct __event_package *pkgs;
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|
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@ -1689,7 +1722,9 @@ int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
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pkgs[i].pev = &pevs[i];
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/* Convert with or without debuginfo */
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ret = convert_to_probe_trace_events(pkgs[i].pev,
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&pkgs[i].tevs, max_tevs);
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&pkgs[i].tevs,
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max_tevs,
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module);
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if (ret < 0)
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goto end;
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pkgs[i].ntevs = ret;
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|
|
|
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|
|
@ -115,14 +115,18 @@ extern void clear_perf_probe_event(struct perf_probe_event *pev);
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/* Command string to line-range */
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extern int parse_line_range_desc(const char *cmd, struct line_range *lr);
|
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|
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/* Internal use: Return kernel/module path */
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extern const char *kernel_get_module_path(const char *module);
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|
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extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs,
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int max_probe_points, bool force_add);
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int max_probe_points, const char *module,
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bool force_add);
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extern int del_perf_probe_events(struct strlist *dellist);
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extern int show_perf_probe_events(void);
|
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extern int show_line_range(struct line_range *lr);
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extern int show_line_range(struct line_range *lr, const char *module);
|
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extern int show_available_vars(struct perf_probe_event *pevs, int npevs,
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int max_probe_points, bool externs);
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int max_probe_points, const char *module,
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bool externs);
|
||||
|
||||
|
||||
/* Maximum index number of event-name postfix */
|
||||
|
|
|
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|
|
@ -116,6 +116,101 @@ static void line_list__free(struct list_head *head)
|
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}
|
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}
|
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|
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/* Dwarf FL wrappers */
|
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|
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static int __linux_kernel_find_elf(Dwfl_Module *mod,
|
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void **userdata,
|
||||
const char *module_name,
|
||||
Dwarf_Addr base,
|
||||
char **file_name, Elf **elfp)
|
||||
{
|
||||
int fd;
|
||||
const char *path = kernel_get_module_path(module_name);
|
||||
|
||||
if (path) {
|
||||
fd = open(path, O_RDONLY);
|
||||
if (fd >= 0) {
|
||||
*file_name = strdup(path);
|
||||
return fd;
|
||||
}
|
||||
}
|
||||
/* If failed, try to call standard method */
|
||||
return dwfl_linux_kernel_find_elf(mod, userdata, module_name, base,
|
||||
file_name, elfp);
|
||||
}
|
||||
|
||||
static char *debuginfo_path; /* Currently dummy */
|
||||
|
||||
static const Dwfl_Callbacks offline_callbacks = {
|
||||
.find_debuginfo = dwfl_standard_find_debuginfo,
|
||||
.debuginfo_path = &debuginfo_path,
|
||||
|
||||
.section_address = dwfl_offline_section_address,
|
||||
|
||||
/* We use this table for core files too. */
|
||||
.find_elf = dwfl_build_id_find_elf,
|
||||
};
|
||||
|
||||
static const Dwfl_Callbacks kernel_callbacks = {
|
||||
.find_debuginfo = dwfl_standard_find_debuginfo,
|
||||
.debuginfo_path = &debuginfo_path,
|
||||
|
||||
.find_elf = __linux_kernel_find_elf,
|
||||
.section_address = dwfl_linux_kernel_module_section_address,
|
||||
};
|
||||
|
||||
/* Get a Dwarf from offline image */
|
||||
static Dwarf *dwfl_init_offline_dwarf(int fd, Dwfl **dwflp, Dwarf_Addr *bias)
|
||||
{
|
||||
Dwfl_Module *mod;
|
||||
Dwarf *dbg = NULL;
|
||||
|
||||
if (!dwflp)
|
||||
return NULL;
|
||||
|
||||
*dwflp = dwfl_begin(&offline_callbacks);
|
||||
if (!*dwflp)
|
||||
return NULL;
|
||||
|
||||
mod = dwfl_report_offline(*dwflp, "", "", fd);
|
||||
if (!mod)
|
||||
goto error;
|
||||
|
||||
dbg = dwfl_module_getdwarf(mod, bias);
|
||||
if (!dbg) {
|
||||
error:
|
||||
dwfl_end(*dwflp);
|
||||
*dwflp = NULL;
|
||||
}
|
||||
return dbg;
|
||||
}
|
||||
|
||||
/* Get a Dwarf from live kernel image */
|
||||
static Dwarf *dwfl_init_live_kernel_dwarf(Dwarf_Addr addr, Dwfl **dwflp,
|
||||
Dwarf_Addr *bias)
|
||||
{
|
||||
Dwarf *dbg;
|
||||
|
||||
if (!dwflp)
|
||||
return NULL;
|
||||
|
||||
*dwflp = dwfl_begin(&kernel_callbacks);
|
||||
if (!*dwflp)
|
||||
return NULL;
|
||||
|
||||
/* Load the kernel dwarves: Don't care the result here */
|
||||
dwfl_linux_kernel_report_kernel(*dwflp);
|
||||
dwfl_linux_kernel_report_modules(*dwflp);
|
||||
|
||||
dbg = dwfl_addrdwarf(*dwflp, addr, bias);
|
||||
/* Here, check whether we could get a real dwarf */
|
||||
if (!dbg) {
|
||||
dwfl_end(*dwflp);
|
||||
*dwflp = NULL;
|
||||
}
|
||||
return dbg;
|
||||
}
|
||||
|
||||
/* Dwarf wrappers */
|
||||
|
||||
/* Find the realpath of the target file. */
|
||||
|
|
@ -1177,10 +1272,12 @@ static int find_probes(int fd, struct probe_finder *pf)
|
|||
Dwarf_Off off, noff;
|
||||
size_t cuhl;
|
||||
Dwarf_Die *diep;
|
||||
Dwarf *dbg;
|
||||
Dwarf *dbg = NULL;
|
||||
Dwfl *dwfl;
|
||||
Dwarf_Addr bias; /* Currently ignored */
|
||||
int ret = 0;
|
||||
|
||||
dbg = dwarf_begin(fd, DWARF_C_READ);
|
||||
dbg = dwfl_init_offline_dwarf(fd, &dwfl, &bias);
|
||||
if (!dbg) {
|
||||
pr_warning("No dwarf info found in the vmlinux - "
|
||||
"please rebuild with CONFIG_DEBUG_INFO=y.\n");
|
||||
|
|
@ -1221,7 +1318,8 @@ static int find_probes(int fd, struct probe_finder *pf)
|
|||
off = noff;
|
||||
}
|
||||
line_list__free(&pf->lcache);
|
||||
dwarf_end(dbg);
|
||||
if (dwfl)
|
||||
dwfl_end(dwfl);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -1412,23 +1510,31 @@ int find_available_vars_at(int fd, struct perf_probe_event *pev,
|
|||
}
|
||||
|
||||
/* Reverse search */
|
||||
int find_perf_probe_point(int fd, unsigned long addr,
|
||||
struct perf_probe_point *ppt)
|
||||
int find_perf_probe_point(unsigned long addr, struct perf_probe_point *ppt)
|
||||
{
|
||||
Dwarf_Die cudie, spdie, indie;
|
||||
Dwarf *dbg;
|
||||
Dwarf *dbg = NULL;
|
||||
Dwfl *dwfl = NULL;
|
||||
Dwarf_Line *line;
|
||||
Dwarf_Addr laddr, eaddr;
|
||||
Dwarf_Addr laddr, eaddr, bias = 0;
|
||||
const char *tmp;
|
||||
int lineno, ret = 0;
|
||||
bool found = false;
|
||||
|
||||
dbg = dwarf_begin(fd, DWARF_C_READ);
|
||||
if (!dbg)
|
||||
return -EBADF;
|
||||
/* Open the live linux kernel */
|
||||
dbg = dwfl_init_live_kernel_dwarf(addr, &dwfl, &bias);
|
||||
if (!dbg) {
|
||||
pr_warning("No dwarf info found in the vmlinux - "
|
||||
"please rebuild with CONFIG_DEBUG_INFO=y.\n");
|
||||
ret = -EINVAL;
|
||||
goto end;
|
||||
}
|
||||
|
||||
/* Adjust address with bias */
|
||||
addr += bias;
|
||||
/* Find cu die */
|
||||
if (!dwarf_addrdie(dbg, (Dwarf_Addr)addr, &cudie)) {
|
||||
if (!dwarf_addrdie(dbg, (Dwarf_Addr)addr - bias, &cudie)) {
|
||||
pr_warning("No CU DIE is found at %lx\n", addr);
|
||||
ret = -EINVAL;
|
||||
goto end;
|
||||
}
|
||||
|
|
@ -1491,7 +1597,8 @@ found:
|
|||
}
|
||||
|
||||
end:
|
||||
dwarf_end(dbg);
|
||||
if (dwfl)
|
||||
dwfl_end(dwfl);
|
||||
if (ret >= 0)
|
||||
ret = found ? 1 : 0;
|
||||
return ret;
|
||||
|
|
@ -1624,6 +1731,8 @@ static int line_range_search_cb(Dwarf_Die *sp_die, void *data)
|
|||
struct line_finder *lf = param->data;
|
||||
struct line_range *lr = lf->lr;
|
||||
|
||||
pr_debug("find (%lx) %s\n", dwarf_dieoffset(sp_die),
|
||||
dwarf_diename(sp_die));
|
||||
if (dwarf_tag(sp_die) == DW_TAG_subprogram &&
|
||||
die_compare_name(sp_die, lr->function)) {
|
||||
lf->fname = dwarf_decl_file(sp_die);
|
||||
|
|
@ -1667,10 +1776,12 @@ int find_line_range(int fd, struct line_range *lr)
|
|||
Dwarf_Off off = 0, noff;
|
||||
size_t cuhl;
|
||||
Dwarf_Die *diep;
|
||||
Dwarf *dbg;
|
||||
Dwarf *dbg = NULL;
|
||||
Dwfl *dwfl;
|
||||
Dwarf_Addr bias; /* Currently ignored */
|
||||
const char *comp_dir;
|
||||
|
||||
dbg = dwarf_begin(fd, DWARF_C_READ);
|
||||
dbg = dwfl_init_offline_dwarf(fd, &dwfl, &bias);
|
||||
if (!dbg) {
|
||||
pr_warning("No dwarf info found in the vmlinux - "
|
||||
"please rebuild with CONFIG_DEBUG_INFO=y.\n");
|
||||
|
|
@ -1716,8 +1827,7 @@ int find_line_range(int fd, struct line_range *lr)
|
|||
}
|
||||
|
||||
pr_debug("path: %s\n", lr->path);
|
||||
dwarf_end(dbg);
|
||||
|
||||
dwfl_end(dwfl);
|
||||
return (ret < 0) ? ret : lf.found;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -22,7 +22,7 @@ extern int find_probe_trace_events(int fd, struct perf_probe_event *pev,
|
|||
int max_tevs);
|
||||
|
||||
/* Find a perf_probe_point from debuginfo */
|
||||
extern int find_perf_probe_point(int fd, unsigned long addr,
|
||||
extern int find_perf_probe_point(unsigned long addr,
|
||||
struct perf_probe_point *ppt);
|
||||
|
||||
/* Find a line range */
|
||||
|
|
@ -35,6 +35,7 @@ extern int find_available_vars_at(int fd, struct perf_probe_event *pev,
|
|||
|
||||
#include <dwarf.h>
|
||||
#include <libdw.h>
|
||||
#include <libdwfl.h>
|
||||
#include <version.h>
|
||||
|
||||
struct probe_finder {
|
||||
|
|
|
|||
Loading…
Reference in New Issue