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Sat, 21 Mar 2026 16:42:27 -0700 (PDT) Date: Sat, 21 Mar 2026 16:42:20 -0700 In-Reply-To: <20260321234220.848859-1-irogers@google.com> Mime-Version: 1.0 References: <20260321234220.848859-1-irogers@google.com> X-Mailer: git-send-email 2.53.0.959.g497ff81fa9-goog Message-ID: <20260321234220.848859-3-irogers@google.com> Subject: [PATCH v1 2/2] tools build: Remove libunwind feature tests From: Ian Rogers To: namhyung@kernel.org Cc: 9erthalion6@gmail.com, acme@kernel.org, adrian.hunter@intel.com, alex@ghiti.fr, alexander.shishkin@linux.intel.com, andrew.jones@oss.qualcomm.com, aou@eecs.berkeley.edu, atrajeev@linux.ibm.com, blakejones@google.com, ctshao@google.com, dapeng1.mi@linux.intel.com, howardchu95@gmail.com, irogers@google.com, james.clark@linaro.org, john.g.garry@oracle.com, jolsa@kernel.org, leo.yan@linux.dev, libunwind-devel@nongnu.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, mingo@redhat.com, palmer@dabbelt.com, peterz@infradead.org, pjw@kernel.org, shimin.guo@skydio.com, tglozar@redhat.com, tmricht@linux.ibm.com, will@kernel.org, amadio@gentoo.org, yuzhuo@google.com Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260321_164229_067659_AB622443 X-CRM114-Status: GOOD ( 10.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Libunwind support has been removed from perf, so the feature tests used to detect its presence are no longer needed. Remove the test-libunwind-*.c files and their references in the feature Makefile. Signed-off-by: Ian Rogers --- tools/build/feature/Makefile | 31 ------------------- tools/build/feature/test-libunwind-aarch64.c | 27 ---------------- tools/build/feature/test-libunwind-arm.c | 28 ----------------- .../test-libunwind-debug-frame-aarch64.c | 17 ---------- .../feature/test-libunwind-debug-frame-arm.c | 17 ---------- .../feature/test-libunwind-debug-frame.c | 17 ---------- tools/build/feature/test-libunwind-x86.c | 28 ----------------- tools/build/feature/test-libunwind-x86_64.c | 28 ----------------- tools/build/feature/test-libunwind.c | 28 ----------------- 9 files changed, 221 deletions(-) delete mode 100644 tools/build/feature/test-libunwind-aarch64.c delete mode 100644 tools/build/feature/test-libunwind-arm.c delete mode 100644 tools/build/feature/test-libunwind-debug-frame-aarch64.c delete mode 100644 tools/build/feature/test-libunwind-debug-frame-arm.c delete mode 100644 tools/build/feature/test-libunwind-debug-frame.c delete mode 100644 tools/build/feature/test-libunwind-x86.c delete mode 100644 tools/build/feature/test-libunwind-x86_64.c delete mode 100644 tools/build/feature/test-libunwind.c diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 1fbcb3ce74d2..37b972526987 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -36,14 +36,6 @@ FILES= \ test-libtraceevent.bin \ test-libcpupower.bin \ 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 \ test-pthread-attr-setaffinity-np.bin \ test-pthread-barrier.bin \ test-stackprotector-all.bin \ @@ -203,29 +195,6 @@ $(OUTPUT)test-libnuma.bin: $(OUTPUT)test-numa_num_possible_cpus.bin: $(BUILD) -lnuma -$(OUTPUT)test-libunwind.bin: - $(BUILD) -lelf -llzma - -$(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 - $(OUTPUT)test-libslang.bin: $(BUILD) -lslang diff --git a/tools/build/feature/test-libunwind-aarch64.c b/tools/build/feature/test-libunwind-aarch64.c deleted file mode 100644 index 323803f49212..000000000000 --- a/tools/build/feature/test-libunwind-aarch64.c +++ /dev/null @@ -1,27 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, - unw_word_t ip, - unw_dyn_info_t *di, - unw_proc_info_t *pi, - int need_unwind_info, void *arg); - -#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) - -static unw_accessors_t accessors; - -int main(void) -{ - unw_addr_space_t addr_space; - - addr_space = unw_create_addr_space(&accessors, 0); - if (addr_space) - return 0; - - unw_init_remote(NULL, addr_space, NULL); - dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL); - - return 0; -} diff --git a/tools/build/feature/test-libunwind-arm.c b/tools/build/feature/test-libunwind-arm.c deleted file mode 100644 index cb378b7d6866..000000000000 --- a/tools/build/feature/test-libunwind-arm.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, - unw_word_t ip, - unw_dyn_info_t *di, - unw_proc_info_t *pi, - int need_unwind_info, void *arg); - - -#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) - -static unw_accessors_t accessors; - -int main(void) -{ - unw_addr_space_t addr_space; - - addr_space = unw_create_addr_space(&accessors, 0); - if (addr_space) - return 0; - - unw_init_remote(NULL, addr_space, NULL); - dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL); - - return 0; -} diff --git a/tools/build/feature/test-libunwind-debug-frame-aarch64.c b/tools/build/feature/test-libunwind-debug-frame-aarch64.c deleted file mode 100644 index 36d6646c185e..000000000000 --- a/tools/build/feature/test-libunwind-debug-frame-aarch64.c +++ /dev/null @@ -1,17 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int -UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug, - unw_word_t ip, unw_word_t segbase, - const char *obj_name, unw_word_t start, - unw_word_t end); - -#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame) - -int main(void) -{ - dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0); - return 0; -} diff --git a/tools/build/feature/test-libunwind-debug-frame-arm.c b/tools/build/feature/test-libunwind-debug-frame-arm.c deleted file mode 100644 index 8696e48e1268..000000000000 --- a/tools/build/feature/test-libunwind-debug-frame-arm.c +++ /dev/null @@ -1,17 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int -UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug, - unw_word_t ip, unw_word_t segbase, - const char *obj_name, unw_word_t start, - unw_word_t end); - -#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame) - -int main(void) -{ - dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0); - return 0; -} diff --git a/tools/build/feature/test-libunwind-debug-frame.c b/tools/build/feature/test-libunwind-debug-frame.c deleted file mode 100644 index efb55cdd8d01..000000000000 --- a/tools/build/feature/test-libunwind-debug-frame.c +++ /dev/null @@ -1,17 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int -UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug, - unw_word_t ip, unw_word_t segbase, - const char *obj_name, unw_word_t start, - unw_word_t end); - -#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame) - -int main(void) -{ - dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0); - return 0; -} diff --git a/tools/build/feature/test-libunwind-x86.c b/tools/build/feature/test-libunwind-x86.c deleted file mode 100644 index e5e0f6c89637..000000000000 --- a/tools/build/feature/test-libunwind-x86.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, - unw_word_t ip, - unw_dyn_info_t *di, - unw_proc_info_t *pi, - int need_unwind_info, void *arg); - - -#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) - -static unw_accessors_t accessors; - -int main(void) -{ - unw_addr_space_t addr_space; - - addr_space = unw_create_addr_space(&accessors, 0); - if (addr_space) - return 0; - - unw_init_remote(NULL, addr_space, NULL); - dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL); - - return 0; -} diff --git a/tools/build/feature/test-libunwind-x86_64.c b/tools/build/feature/test-libunwind-x86_64.c deleted file mode 100644 index 62ae4db597dc..000000000000 --- a/tools/build/feature/test-libunwind-x86_64.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, - unw_word_t ip, - unw_dyn_info_t *di, - unw_proc_info_t *pi, - int need_unwind_info, void *arg); - - -#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) - -static unw_accessors_t accessors; - -int main(void) -{ - unw_addr_space_t addr_space; - - addr_space = unw_create_addr_space(&accessors, 0); - if (addr_space) - return 0; - - unw_init_remote(NULL, addr_space, NULL); - dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL); - - return 0; -} diff --git a/tools/build/feature/test-libunwind.c b/tools/build/feature/test-libunwind.c deleted file mode 100644 index 53fd26614ff0..000000000000 --- a/tools/build/feature/test-libunwind.c +++ /dev/null @@ -1,28 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include - -extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as, - unw_word_t ip, - unw_dyn_info_t *di, - unw_proc_info_t *pi, - int need_unwind_info, void *arg); - - -#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table) - -static unw_accessors_t accessors; - -int main(void) -{ - unw_addr_space_t addr_space; - - addr_space = unw_create_addr_space(&accessors, 0); - if (addr_space) - return 0; - - unw_init_remote(NULL, addr_space, NULL); - dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL); - - return 0; -} -- 2.53.0.959.g497ff81fa9-goog