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[PW_SID:1094515] [v5,1/7] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection #1941

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[PW_SID:1094515] [v5,1/7] perf unwind: Refactor get_entries to allow dynamic libdw/libunwind selection #1941

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c542b72
perf unwind: Refactor get_entries to allow dynamic libdw/libunwind se…
captain5050 May 13, 2026
447daf7
tools build: Deduplicate test-libunwind for different architectures
captain5050 May 13, 2026
3aacc34
perf build: Be more programmatic when setting up libunwind variables
captain5050 May 13, 2026
3a2e233
perf unwind-libunwind: Make libunwind register reading cross platform
captain5050 May 13, 2026
3005df4
perf unwind-libunwind: Move flush/finish access out of local
captain5050 May 13, 2026
ddd14ba
perf unwind-libunwind: Remove libunwind-local
captain5050 May 13, 2026
44d60d0
perf unwind-libunwind: Add RISC-V libunwind support
captain5050 May 13, 2026
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12 changes: 11 additions & 1 deletion tools/build/Makefile.feature
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,9 @@ FEATURE_TESTS_BASIC := \

# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list
# of all feature tests

LIBUNWIND_ARCHS:=aarch64 arm loongarch64 mips ppc32 ppc64 riscv s390x x86 x86_64

FEATURE_TESTS_EXTRA := \
bionic \
compile-32 \
Expand All @@ -127,7 +130,10 @@ FEATURE_TESTS_EXTRA := \
libpfm4 \
libdebuginfod \
clang-bpf-co-re \
bpftool-skeletons
bpftool-skeletons \
libunwind \
libunwind-debug-frame \
$(foreach arch,$(LIBUNWIND_ARCHS),libunwind-$(arch) libunwind-debug-frame-$(arch))


FEATURE_TESTS ?= $(FEATURE_TESTS_BASIC)
Expand Down Expand Up @@ -212,6 +218,10 @@ ifeq ($(feature-all), 1)
$(call feature_check,compile-x32)
$(call feature_check,bionic)
$(call feature_check,libbabeltrace)
$(call feature_check,libunwind)
$(call feature_check,libunwind-debug-frame)
$(foreach arch,$(LIBUNWIND_ARCHS),$(call feature_check,libunwind-$(arch)))
$(foreach arch,$(LIBUNWIND_ARCHS),$(call feature_check,libunwind-debug-frame-$(arch)))
else
$(foreach feat,$(FEATURE_TESTS),$(call feature_check,$(feat)))
endif
Expand Down
46 changes: 21 additions & 25 deletions tools/build/feature/Makefile
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
include ../../scripts/Makefile.include

LIBUNWIND_ARCHS:=aarch64 arm loongarch64 mips ppc32 ppc64 riscv s390x x86 x86_64

FILES= \
test-all.bin \
test-backtrace.bin \
Expand Down Expand Up @@ -38,12 +40,7 @@ FILES= \
test-libtracefs.bin \
test-libunwind.bin \
test-libunwind-debug-frame.bin \
test-libunwind-x86.bin \
test-libunwind-x86_64.bin \
test-libunwind-arm.bin \
test-libunwind-aarch64.bin \
test-libunwind-debug-frame-arm.bin \
test-libunwind-debug-frame-aarch64.bin \
$(foreach arch,$(LIBUNWIND_ARCHS),test-libunwind-$(arch).bin test-libunwind-debug-frame-$(arch).bin) \
test-pthread-attr-setaffinity-np.bin \
test-pthread-barrier.bin \
test-stackprotector-all.bin \
Expand Down Expand Up @@ -211,27 +208,26 @@ $(OUTPUT)test-numa_num_possible_cpus.bin:
$(BUILD) -lnuma

$(OUTPUT)test-libunwind.bin:
$(BUILD) -lelf -llzma
$(BUILD) -include libunwind.h -lelf -llzma -lunwind

$(OUTPUT)test-libunwind-debug-frame.bin:
$(BUILD) -lelf -llzma
$(OUTPUT)test-libunwind-x86.bin:
$(BUILD) -lelf -llzma -lunwind-x86

$(OUTPUT)test-libunwind-x86_64.bin:
$(BUILD) -lelf -llzma -lunwind-x86_64

$(OUTPUT)test-libunwind-arm.bin:
$(BUILD) -lelf -llzma -lunwind-arm

$(OUTPUT)test-libunwind-aarch64.bin:
$(BUILD) -lelf -llzma -lunwind-aarch64

$(OUTPUT)test-libunwind-debug-frame-arm.bin:
$(BUILD) -lelf -llzma -lunwind-arm

$(OUTPUT)test-libunwind-debug-frame-aarch64.bin:
$(BUILD) -lelf -llzma -lunwind-aarch64
$(BUILD) -include libunwind.h -lelf -llzma -lunwind

define LIBUNWIND_RULE
$$(OUTPUT)test-libunwind-$(1).bin:
$$(CC) $$(CFLAGS) -MD -Wall -Werror -include libunwind-$(1).h -o $$@ \
test-libunwind.c $$(LDFLAGS) -lelf -llzma -lunwind-$(1) \
> $$(@:.bin=.make.output) 2>&1

$$(OUTPUT)test-libunwind-debug-frame-$(1).bin:
$$(CC) $$(CFLAGS) -MD -Wall -Werror -include libunwind-$(1).h -o $$@ \
test-libunwind-debug-frame.c $$(LDFLAGS) -lelf -llzma -lunwind-$(1) \
> $$(@:.bin=.make.output) 2>&1

endef
$(foreach arch,$(LIBUNWIND_ARCHS), \
$(eval $(call LIBUNWIND_RULE,$(arch))) \
)

$(OUTPUT)test-libslang.bin:
$(BUILD) -lslang
Expand Down
27 changes: 0 additions & 27 deletions tools/build/feature/test-libunwind-aarch64.c
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28 changes: 0 additions & 28 deletions tools/build/feature/test-libunwind-arm.c
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17 changes: 0 additions & 17 deletions tools/build/feature/test-libunwind-debug-frame-aarch64.c
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17 changes: 0 additions & 17 deletions tools/build/feature/test-libunwind-debug-frame-arm.c
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1 change: 0 additions & 1 deletion tools/build/feature/test-libunwind-debug-frame.c
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <libunwind.h>
#include <stdlib.h>

extern int
Expand Down
28 changes: 0 additions & 28 deletions tools/build/feature/test-libunwind-x86.c
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28 changes: 0 additions & 28 deletions tools/build/feature/test-libunwind-x86_64.c
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1 change: 0 additions & 1 deletion tools/build/feature/test-libunwind.c
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Original file line number Diff line number Diff line change
@@ -1,5 +1,4 @@
// SPDX-License-Identifier: GPL-2.0
#include <libunwind.h>
#include <stdlib.h>

extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
Expand Down
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