summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAlexei Starovoitov <ast@kernel.org>2024-03-15 05:18:32 +0300
committerAndrii Nakryiko <andrii@kernel.org>2024-03-16 00:24:00 +0300
commit10ebe835c937a11870690aa44c7c970fe906ff54 (patch)
treef790b75713a6d9845bf8e2cb9c6d4e489a794264
parentee498a38f3177d9ee0213839d3a05b94272aa48c (diff)
downloadlinux-10ebe835c937a11870690aa44c7c970fe906ff54.tar.xz
libbpf, selftests/bpf: Adjust libbpf, bpftool, selftests to match LLVM
The selftests use to tell LLVM about special pointers. For LLVM there is nothing "arena" about them. They are simply pointers in a different address space. Hence LLVM diff https://github.com/llvm/llvm-project/pull/85161 renamed: . macro __BPF_FEATURE_ARENA_CAST -> __BPF_FEATURE_ADDR_SPACE_CAST . global variables in __attribute__((address_space(N))) are now placed in section named ".addr_space.N" instead of ".arena.N". Adjust libbpf, bpftool, and selftests to match LLVM. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20240315021834.62988-3-alexei.starovoitov@gmail.com
-rw-r--r--tools/bpf/bpftool/gen.c2
-rw-r--r--tools/lib/bpf/libbpf.c2
-rw-r--r--tools/testing/selftests/bpf/bpf_arena_common.h2
-rw-r--r--tools/testing/selftests/bpf/progs/arena_htab.c2
-rw-r--r--tools/testing/selftests/bpf/progs/arena_list.c10
-rw-r--r--tools/testing/selftests/bpf/progs/verifier_arena.c4
6 files changed, 11 insertions, 11 deletions
diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index 4fa4ade1ce74..540c0f2c4fda 100644
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -121,7 +121,7 @@ static bool get_datasec_ident(const char *sec_name, char *buf, size_t buf_sz)
int i, n;
/* recognize hard coded LLVM section name */
- if (strcmp(sec_name, ".arena.1") == 0) {
+ if (strcmp(sec_name, ".addr_space.1") == 0) {
/* this is the name to use in skeleton */
snprintf(buf, buf_sz, "arena");
return true;
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index efab29b8935b..36e26f4f5997 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -498,7 +498,7 @@ struct bpf_struct_ops {
#define KSYMS_SEC ".ksyms"
#define STRUCT_OPS_SEC ".struct_ops"
#define STRUCT_OPS_LINK_SEC ".struct_ops.link"
-#define ARENA_SEC ".arena.1"
+#define ARENA_SEC ".addr_space.1"
enum libbpf_map_type {
LIBBPF_MAP_UNSPEC,
diff --git a/tools/testing/selftests/bpf/bpf_arena_common.h b/tools/testing/selftests/bpf/bpf_arena_common.h
index bcf195c64a45..567491f3e1b5 100644
--- a/tools/testing/selftests/bpf/bpf_arena_common.h
+++ b/tools/testing/selftests/bpf/bpf_arena_common.h
@@ -32,7 +32,7 @@
*/
#endif
-#if defined(__BPF_FEATURE_ARENA_CAST) && !defined(BPF_ARENA_FORCE_ASM)
+#if defined(__BPF_FEATURE_ADDR_SPACE_CAST) && !defined(BPF_ARENA_FORCE_ASM)
#define __arena __attribute__((address_space(1)))
#define cast_kern(ptr) /* nop for bpf prog. emitted by LLVM */
#define cast_user(ptr) /* nop for bpf prog. emitted by LLVM */
diff --git a/tools/testing/selftests/bpf/progs/arena_htab.c b/tools/testing/selftests/bpf/progs/arena_htab.c
index b7bb712cacfd..1e6ac187a6a0 100644
--- a/tools/testing/selftests/bpf/progs/arena_htab.c
+++ b/tools/testing/selftests/bpf/progs/arena_htab.c
@@ -22,7 +22,7 @@ int zero = 0;
SEC("syscall")
int arena_htab_llvm(void *ctx)
{
-#if defined(__BPF_FEATURE_ARENA_CAST) || defined(BPF_ARENA_FORCE_ASM)
+#if defined(__BPF_FEATURE_ADDR_SPACE_CAST) || defined(BPF_ARENA_FORCE_ASM)
struct htab __arena *htab;
__u64 i;
diff --git a/tools/testing/selftests/bpf/progs/arena_list.c b/tools/testing/selftests/bpf/progs/arena_list.c
index cd35b8448435..c0422c58cee2 100644
--- a/tools/testing/selftests/bpf/progs/arena_list.c
+++ b/tools/testing/selftests/bpf/progs/arena_list.c
@@ -30,13 +30,13 @@ int list_sum;
int cnt;
bool skip = false;
-#ifdef __BPF_FEATURE_ARENA_CAST
+#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
long __arena arena_sum;
int __arena test_val = 1;
struct arena_list_head __arena global_head;
#else
-long arena_sum SEC(".arena.1");
-int test_val SEC(".arena.1");
+long arena_sum SEC(".addr_space.1");
+int test_val SEC(".addr_space.1");
#endif
int zero;
@@ -44,7 +44,7 @@ int zero;
SEC("syscall")
int arena_list_add(void *ctx)
{
-#ifdef __BPF_FEATURE_ARENA_CAST
+#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
__u64 i;
list_head = &global_head;
@@ -66,7 +66,7 @@ int arena_list_add(void *ctx)
SEC("syscall")
int arena_list_del(void *ctx)
{
-#ifdef __BPF_FEATURE_ARENA_CAST
+#ifdef __BPF_FEATURE_ADDR_SPACE_CAST
struct elem __arena *n;
int sum = 0;
diff --git a/tools/testing/selftests/bpf/progs/verifier_arena.c b/tools/testing/selftests/bpf/progs/verifier_arena.c
index 5540b05ff9ee..969bc091060b 100644
--- a/tools/testing/selftests/bpf/progs/verifier_arena.c
+++ b/tools/testing/selftests/bpf/progs/verifier_arena.c
@@ -19,7 +19,7 @@ SEC("syscall")
__success __retval(0)
int basic_alloc1(void *ctx)
{
-#if defined(__BPF_FEATURE_ARENA_CAST)
+#if defined(__BPF_FEATURE_ADDR_SPACE_CAST)
volatile int __arena *page1, *page2, *no_page, *page3;
page1 = bpf_arena_alloc_pages(&arena, NULL, 1, NUMA_NO_NODE, 0);
@@ -58,7 +58,7 @@ SEC("syscall")
__success __retval(0)
int basic_alloc2(void *ctx)
{
-#if defined(__BPF_FEATURE_ARENA_CAST)
+#if defined(__BPF_FEATURE_ADDR_SPACE_CAST)
volatile char __arena *page1, *page2, *page3, *page4;
page1 = bpf_arena_alloc_pages(&arena, NULL, 2, NUMA_NO_NODE, 0);