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ee756ef749
Add reference count checking to struct dso, this can help with
implementing correct reference counting discipline. To avoid
RC_CHK_ACCESS everywhere, add accessor functions for the variables in
struct dso.
The majority of the change is mechanical in nature and not easy to
split up.
Committer testing:
'perf test' up to this patch shows no regressions.
But:
util/symbol.c: In function ‘dso__load_bfd_symbols’:
util/symbol.c:1683:9: error: too few arguments to function ‘dso__set_adjust_symbols’
1683 | dso__set_adjust_symbols(dso);
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from util/symbol.c:21:
util/dso.h:268:20: note: declared here
268 | static inline void dso__set_adjust_symbols(struct dso *dso, bool val)
| ^~~~~~~~~~~~~~~~~~~~~~~
make[6]: *** [/home/acme/git/perf-tools-next/tools/build/Makefile.build:106: /tmp/tmp.ZWHbQftdN6/util/symbol.o] Error 1
MKDIR /tmp/tmp.ZWHbQftdN6/tests/workloads/
make[6]: *** Waiting for unfinished jobs....
This was updated:
- symbols__fixup_end(&dso->symbols, false);
- symbols__fixup_duplicate(&dso->symbols);
- dso->adjust_symbols = 1;
+ symbols__fixup_end(dso__symbols(dso), false);
+ symbols__fixup_duplicate(dso__symbols(dso));
+ dso__set_adjust_symbols(dso);
But not build tested with BUILD_NONDISTRO and libbfd devel files installed
(binutils-devel on fedora).
Add the missing argument:
symbols__fixup_end(dso__symbols(dso), false);
symbols__fixup_duplicate(dso__symbols(dso));
- dso__set_adjust_symbols(dso);
+ dso__set_adjust_symbols(dso, true);
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Changbin Du <changbin.du@huawei.com>
Cc: Chengen Du <chengen.du@canonical.com>
Cc: Colin Ian King <colin.i.king@gmail.com>
Cc: Dima Kogan <dima@secretsauce.net>
Cc: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Li Dong <lidong@vivo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: zhaimingbing <zhaimingbing@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20240504213803.218974-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "unwind.h"
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#include "dso.h"
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#include "map.h"
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#include "thread.h"
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#include "session.h"
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#include "debug.h"
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#include "env.h"
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#include "callchain.h"
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struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops;
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struct unwind_libunwind_ops __weak *x86_32_unwind_libunwind_ops;
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struct unwind_libunwind_ops __weak *arm64_unwind_libunwind_ops;
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int unwind__prepare_access(struct maps *maps, struct map *map, bool *initialized)
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{
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const char *arch;
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enum dso_type dso_type;
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struct unwind_libunwind_ops *ops = local_unwind_libunwind_ops;
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struct dso *dso = map__dso(map);
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struct machine *machine;
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int err;
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if (!dwarf_callchain_users)
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return 0;
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if (maps__addr_space(maps)) {
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pr_debug("unwind: thread map already set, dso=%s\n", dso__name(dso));
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if (initialized)
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*initialized = true;
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return 0;
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}
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machine = maps__machine(maps);
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/* env->arch is NULL for live-mode (i.e. perf top) */
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if (!machine->env || !machine->env->arch)
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goto out_register;
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dso_type = dso__type(dso, machine);
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if (dso_type == DSO__TYPE_UNKNOWN)
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return 0;
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arch = perf_env__arch(machine->env);
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if (!strcmp(arch, "x86")) {
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if (dso_type != DSO__TYPE_64BIT)
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ops = x86_32_unwind_libunwind_ops;
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} else if (!strcmp(arch, "arm64") || !strcmp(arch, "arm")) {
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if (dso_type == DSO__TYPE_64BIT)
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ops = arm64_unwind_libunwind_ops;
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}
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if (!ops) {
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pr_warning_once("unwind: target platform=%s is not supported\n", arch);
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return 0;
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}
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out_register:
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maps__set_unwind_libunwind_ops(maps, ops);
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err = maps__unwind_libunwind_ops(maps)->prepare_access(maps);
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if (initialized)
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*initialized = err ? false : true;
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return err;
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}
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void unwind__flush_access(struct maps *maps)
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{
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const struct unwind_libunwind_ops *ops = maps__unwind_libunwind_ops(maps);
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if (ops)
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ops->flush_access(maps);
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}
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void unwind__finish_access(struct maps *maps)
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{
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const struct unwind_libunwind_ops *ops = maps__unwind_libunwind_ops(maps);
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if (ops)
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ops->finish_access(maps);
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}
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int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
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struct thread *thread,
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struct perf_sample *data, int max_stack,
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bool best_effort)
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{
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const struct unwind_libunwind_ops *ops = maps__unwind_libunwind_ops(thread__maps(thread));
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if (ops)
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return ops->get_entries(cb, arg, thread, data, max_stack, best_effort);
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return 0;
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}
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