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Message-ID: <ZCx5EyhgwZNWomfD@kernel.org>
Date: Tue, 4 Apr 2023 16:22:59 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Darren Hart <dvhart@...radead.org>,
Davidlohr Bueso <dave@...olabs.net>,
James Clark <james.clark@....com>,
John Garry <john.g.garry@...cle.com>,
Riccardo Mancini <rickyman7@...il.com>,
Yury Norov <yury.norov@...il.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Leo Yan <leo.yan@...aro.org>, Andi Kleen <ak@...ux.intel.com>,
Thomas Richter <tmricht@...ux.ibm.com>,
Kan Liang <kan.liang@...ux.intel.com>,
Madhavan Srinivasan <maddy@...ux.ibm.com>,
Shunsuke Nakamura <nakamura.shun@...itsu.com>,
Song Liu <song@...nel.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Miaoqian Lin <linmq006@...il.com>,
Stephen Brennan <stephen.s.brennan@...cle.com>,
Kajol Jain <kjain@...ux.ibm.com>,
Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>,
German Gomez <german.gomez@....com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
Eric Dumazet <edumazet@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Hao Luo <haoluo@...gle.com>,
Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v5 00/17] Reference count checker and related fixes
Applied to:
perf map: Add accessor for dso
diff --git a/tools/perf/arch/powerpc/util/skip-callchain-idx.c b/tools/perf/arch/powerpc/util/skip-callchain-idx.c
index 20cd6244863b1a09..fe0e4530673c6661 100644
--- a/tools/perf/arch/powerpc/util/skip-callchain-idx.c
+++ b/tools/perf/arch/powerpc/util/skip-callchain-idx.c
@@ -255,7 +255,7 @@ int arch_skip_callchain_idx(struct thread *thread, struct ip_callchain *chain)
thread__find_symbol(thread, PERF_RECORD_MISC_USER, ip, &al);
if (al.map)
- dso = al.map->dso;
+ dso = map__dso(al.map);
if (!dso) {
pr_debug("%" PRIx64 " dso is NULL\n", ip);
diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/powerpc/util/sym-handling.c
index 0856b32f9e08a1f5..9f99fc88dbff9056 100644
--- a/tools/perf/arch/powerpc/util/sym-handling.c
+++ b/tools/perf/arch/powerpc/util/sym-handling.c
@@ -104,7 +104,7 @@ void arch__fix_tev_from_maps(struct perf_probe_event *pev,
lep_offset = PPC64_LOCAL_ENTRY_OFFSET(sym->arch_sym);
- if (map->dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS)
+ if (map__dso(map)->symtab_type == DSO_BINARY_TYPE__KALLSYMS)
tev->point.offset += PPC64LE_LEP_OFFSET;
else if (lep_offset) {
if (pev->uprobes)
diff --git a/tools/perf/ui/gtk/annotate.c b/tools/perf/ui/gtk/annotate.c
index a1c021a6d3c1f0f1..2effac77ca8c6742 100644
--- a/tools/perf/ui/gtk/annotate.c
+++ b/tools/perf/ui/gtk/annotate.c
@@ -165,6 +165,7 @@ static int symbol__gtk_annotate(struct map_symbol *ms, struct evsel *evsel,
struct annotation_options *options,
struct hist_browser_timer *hbt)
{
+ struct dso *dso = map__dso(ms->map);
struct symbol *sym = ms->sym;
GtkWidget *window;
GtkWidget *notebook;
@@ -172,13 +173,13 @@ static int symbol__gtk_annotate(struct map_symbol *ms, struct evsel *evsel,
GtkWidget *tab_label;
int err;
- if (ms->map->dso->annotate_warned)
+ if (dso->annotate_warned)
return -1;
err = symbol__annotate(ms, evsel, options, NULL);
if (err) {
char msg[BUFSIZ];
- ms->map->dso->annotate_warned = true;
+ dso->annotate_warned = true;
symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
ui__error("Couldn't annotate %s: %s\n", sym->name, msg);
return -1;
diff --git a/tools/perf/util/cs-etm.c b/tools/perf/util/cs-etm.c
index 94e2d02009eb9f72..528a7fb066cfc9ec 100644
--- a/tools/perf/util/cs-etm.c
+++ b/tools/perf/util/cs-etm.c
@@ -865,6 +865,7 @@ static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u8 trace_chan_id,
struct thread *thread;
struct machine *machine;
struct addr_location al;
+ struct dso *dso;
struct cs_etm_traceid_queue *tidq;
if (!etmq)
@@ -883,27 +884,29 @@ static u32 cs_etm__mem_access(struct cs_etm_queue *etmq, u8 trace_chan_id,
thread = etmq->etm->unknown_thread;
}
- if (!thread__find_map(thread, cpumode, address, &al) || !al.map->dso)
+ dso = map__dso(al.map);
+
+ if (!thread__find_map(thread, cpumode, address, &al) || !dso)
return 0;
- if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR &&
- dso__data_status_seen(al.map->dso, DSO_DATA_STATUS_SEEN_ITRACE))
+ if (dso->data.status == DSO_DATA_STATUS_ERROR &&
+ dso__data_status_seen(dso, DSO_DATA_STATUS_SEEN_ITRACE))
return 0;
offset = al.map->map_ip(al.map, address);
map__load(al.map);
- len = dso__data_read_offset(al.map->dso, machine, offset, buffer, size);
+ len = dso__data_read_offset(dso, machine, offset, buffer, size);
if (len <= 0) {
ui__warning_once("CS ETM Trace: Missing DSO. Use 'perf archive' or debuginfod to export data from the traced system.\n"
" Enable CONFIG_PROC_KCORE or use option '-k /path/to/vmlinux' for kernel symbols.\n");
- if (!al.map->dso->auxtrace_warned) {
+ if (!dso->auxtrace_warned) {
pr_err("CS ETM Trace: Debug data not found for address %#"PRIx64" in %s\n",
address,
- al.map->dso->long_name ? al.map->dso->long_name : "Unknown");
- al.map->dso->auxtrace_warned = true;
+ dso->long_name ? dso->long_name : "Unknown");
+ dso->auxtrace_warned = true;
}
return 0;
}
diff --git a/tools/perf/util/unwind-libunwind-local.c b/tools/perf/util/unwind-libunwind-local.c
index c487a249b33c62d4..108f7b1697a73465 100644
--- a/tools/perf/util/unwind-libunwind-local.c
+++ b/tools/perf/util/unwind-libunwind-local.c
@@ -328,7 +328,7 @@ static int read_unwind_spec_eh_frame(struct dso *dso, struct unwind_info *ui,
maps__for_each_entry(ui->thread->maps, map_node) {
struct map *map = map_node->map;
- if (map->dso == dso && map->start < base_addr)
+ if (map__dso(map) == dso && map->start < base_addr)
base_addr = map->start;
}
base_addr -= dso->data.elf_base_addr;
@@ -424,19 +424,23 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
{
struct unwind_info *ui = arg;
struct map *map;
+ struct dso *dso;
unw_dyn_info_t di;
u64 table_data, segbase, fde_count;
int ret = -EINVAL;
map = find_map(ip, ui);
- if (!map || !map->dso)
+ if (!map)
return -EINVAL;
- pr_debug("unwind: find_proc_info dso %s\n", map->dso->name);
+ dso = map__dso(map);
+ if (!dso)
+ return -EINVAL;
+
+ pr_debug("unwind: find_proc_info dso %s\n", dso->name);
/* Check the .eh_frame section for unwinding info */
- if (!read_unwind_spec_eh_frame(map->dso, ui,
- &table_data, &segbase, &fde_count)) {
+ if (!read_unwind_spec_eh_frame(dso, ui, &table_data, &segbase, &fde_count)) {
memset(&di, 0, sizeof(di));
di.format = UNW_INFO_FORMAT_REMOTE_TABLE;
di.start_ip = map->start;
@@ -452,16 +456,16 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
#ifndef NO_LIBUNWIND_DEBUG_FRAME
/* Check the .debug_frame section for unwinding info */
if (ret < 0 &&
- !read_unwind_spec_debug_frame(map->dso, ui->machine, &segbase)) {
- int fd = dso__data_get_fd(map->dso, ui->machine);
- int is_exec = elf_is_exec(fd, map->dso->name);
+ !read_unwind_spec_debug_frame(dso, ui->machine, &segbase)) {
+ int fd = dso__data_get_fd(dso, ui->machine);
+ int is_exec = elf_is_exec(fd, dso->name);
unw_word_t base = is_exec ? 0 : map->start;
const char *symfile;
if (fd >= 0)
- dso__data_put_fd(map->dso);
+ dso__data_put_fd(dso);
- symfile = map->dso->symsrc_filename ?: map->dso->name;
+ symfile = dso->symsrc_filename ?: dso->name;
memset(&di, 0, sizeof(di));
if (dwarf_find_debug_frame(0, &di, ip, base, symfile,
@@ -513,6 +517,7 @@ static int access_dso_mem(struct unwind_info *ui, unw_word_t addr,
unw_word_t *data)
{
struct map *map;
+ struct dso *dso;
ssize_t size;
map = find_map(addr, ui);
@@ -521,10 +526,12 @@ static int access_dso_mem(struct unwind_info *ui, unw_word_t addr,
return -1;
}
- if (!map->dso)
+ dso = map__dso(map);
+
+ if (!dso)
return -1;
- size = dso__data_read_addr(map->dso, map, ui->machine,
+ size = dso__data_read_addr(dso, map, ui->machine,
addr, (u8 *) data, sizeof(*data));
return !(size == sizeof(*data));
diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index 42528ade513e4975..4378daaafcd3b875 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -22,6 +22,7 @@ int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized
const char *arch;
enum dso_type dso_type;
struct unwind_libunwind_ops *ops = local_unwind_libunwind_ops;
+ struct dso *dso = map__dso(map);
struct machine *machine;
int err;
@@ -29,8 +30,7 @@ int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized
return 0;
if (maps__addr_space(maps)) {
- pr_debug("unwind: thread map already set, dso=%s\n",
- map->dso->name);
+ pr_debug("unwind: thread map already set, dso=%s\n", dso->name);
if (initialized)
*initialized = true;
return 0;
@@ -41,7 +41,7 @@ int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized
if (!machine->env || !machine->env->arch)
goto out_register;
- dso_type = dso__type(map->dso, machine);
+ dso_type = dso__type(dso, machine);
if (dso_type == DSO__TYPE_UNKNOWN)
return 0;
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