From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/tools/perf/util/unwind-libdw.c | 49 ++++++++++++++++++++++++++++++++++++++++---------
1 files changed, 40 insertions(+), 9 deletions(-)
diff --git a/kernel/tools/perf/util/unwind-libdw.c b/kernel/tools/perf/util/unwind-libdw.c
index 5eff9bf..a74b517 100644
--- a/kernel/tools/perf/util/unwind-libdw.c
+++ b/kernel/tools/perf/util/unwind-libdw.c
@@ -5,22 +5,39 @@
#include <inttypes.h>
#include <errno.h>
#include "debug.h"
+#include "dso.h"
#include "unwind.h"
#include "unwind-libdw.h"
#include "machine.h"
+#include "map.h"
+#include "symbol.h"
#include "thread.h"
#include <linux/types.h>
+#include <linux/zalloc.h>
#include "event.h"
#include "perf_regs.h"
#include "callchain.h"
-#include "util.h"
static char *debuginfo_path;
+static int __find_debuginfo(Dwfl_Module *mod __maybe_unused, void **userdata,
+ const char *modname __maybe_unused, Dwarf_Addr base __maybe_unused,
+ const char *file_name, const char *debuglink_file __maybe_unused,
+ GElf_Word debuglink_crc __maybe_unused, char **debuginfo_file_name)
+{
+ const struct dso *dso = *userdata;
+
+ assert(dso);
+ if (dso->symsrc_filename && strcmp (file_name, dso->symsrc_filename))
+ *debuginfo_file_name = strdup(dso->symsrc_filename);
+ return -1;
+}
+
static const Dwfl_Callbacks offline_callbacks = {
- .find_debuginfo = dwfl_standard_find_debuginfo,
+ .find_debuginfo = __find_debuginfo,
.debuginfo_path = &debuginfo_path,
.section_address = dwfl_offline_section_address,
+ // .find_elf is not set as we use dwfl_report_elf() instead.
};
static int __report_module(struct addr_location *al, u64 ip,
@@ -50,9 +67,22 @@
}
if (!mod)
- mod = dwfl_report_elf(ui->dwfl, dso->short_name,
- (dso->symsrc_filename ? dso->symsrc_filename : dso->long_name), -1, al->map->start - al->map->pgoff,
- false);
+ mod = dwfl_report_elf(ui->dwfl, dso->short_name, dso->long_name, -1,
+ al->map->start - al->map->pgoff, false);
+ if (!mod) {
+ char filename[PATH_MAX];
+
+ if (dso__build_id_filename(dso, filename, sizeof(filename), false))
+ mod = dwfl_report_elf(ui->dwfl, dso->short_name, filename, -1,
+ al->map->start - al->map->pgoff, false);
+ }
+
+ if (mod) {
+ void **userdatap;
+
+ dwfl_module_info(mod, &userdatap, NULL, NULL, NULL, NULL, NULL, NULL);
+ *userdatap = dso;
+ }
return mod && dwfl_addrmodule(ui->dwfl, ip) == mod ? 0 : -1;
}
@@ -77,9 +107,10 @@
if (__report_module(&al, ip, ui))
return -1;
- e->ip = ip;
- e->map = al.map;
- e->sym = al.sym;
+ e->ip = ip;
+ e->ms.maps = al.maps;
+ e->ms.map = al.map;
+ e->ms.sym = al.sym;
pr_debug("unwind: %s:ip = 0x%" PRIx64 " (0x%" PRIx64 ")\n",
al.sym ? al.sym->name : "''",
@@ -196,7 +227,7 @@
struct unwind_info *ui, ui_buf = {
.sample = data,
.thread = thread,
- .machine = thread->mg->machine,
+ .machine = thread->maps->machine,
.cb = cb,
.arg = arg,
.max_stack = max_stack,
--
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