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Hou Tao 172a95026f libbpf: Use page size as max_entries when probing ring buffer map 
[ Upstream commit 689eb2f1ba46b4b02195ac2a71c55b96d619ebf8 ]

Using page size as max_entries when probing ring buffer map, else the
probe may fail on host with 64KB page size (e.g., an ARM64 host).

After the fix, the output of "bpftool feature" on above host will be
correct.

Before :
    eBPF map_type ringbuf is NOT available
    eBPF map_type user_ringbuf is NOT available

After :
    eBPF map_type ringbuf is available
    eBPF map_type user_ringbuf is available

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221116072351.1168938-2-houtao@huaweicloud.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-19 12:36:41 +01:00
..
.gitignore
libbpf: Stop using feature-detection Makefiles
2021-02-04 01:22:00 +01:00
bpf_core_read.h
libbpf: Fix endianness detection in BPF_CORE_READ_BITFIELD_PROBED()
2021-11-18 19:16:41 +01:00
bpf_endian.h
libbpf: Make bpf_endian co-exist with vmlinux.h
2020-07-01 09:06:12 +02:00
bpf_gen_internal.h
libbpf: Cleanup temp FDs when intermediate sys_bpf fails.
2021-05-19 00:40:44 +02:00
bpf_helpers.h
libbpf: Move BPF_SEQ_PRINTF and BPF_SNPRINTF to bpf_helpers.h
2021-05-26 10:45:41 -07:00
bpf_prog_linfo.c
libbpf: Streamline error reporting for high-level APIs
2021-05-25 17:32:35 -07:00
bpf_tracing.h
libbpf: Fail compilation if target arch is missing
2021-06-16 20:15:30 -07:00
bpf.c
libbpf: Fix lookup_and_delete_elem_flags error reporting
2021-11-18 19:17:09 +01:00
bpf.h
libbpf: Add bpf_cookie support to bpf_link_create() API
2021-08-17 00:45:08 +02:00
btf_dump.c
libbpf: Skip forward declaration when counting duplicated type names
2022-04-08 14:23:36 +02:00
btf.c
libbpf: Accommodate DWARF/compiler bug with duplicated structs
2022-01-27 11:04:28 +01:00
btf.h
libbpf: Fix potential misaligned memory access in btf_ext__new()
2022-01-27 11:03:16 +01:00
Build
libbpf: Split CO-RE logic into relo_core.c.
2021-07-26 12:29:14 -07:00
gen_loader.c
libbpf: fix an snprintf() overflow check
2022-08-17 14:23:32 +02:00
hashmap.c
libbpf: Centralize poisoning and poison reallocarray()
2020-08-18 18:38:25 -07:00
hashmap.h
libbpf, hashmap: Fix undefined behavior in hash_bits
2020-11-02 23:33:51 +01:00
libbpf_common.h
libbpf: Implement generalized .BTF.ext func/line info adjustment
2020-09-03 17:14:40 -07:00
libbpf_errno.c
libbpf: Streamline error reporting for high-level APIs
2021-05-25 17:32:35 -07:00
libbpf_internal.h
libbpf: Add bpf_cookie support to bpf_link_create() API
2021-08-17 00:45:08 +02:00
libbpf_legacy.h
libbpf: Streamline error reporting for low-level APIs
2021-05-25 17:32:35 -07:00
libbpf_probes.c
libbpf: Use page size as max_entries when probing ring buffer map
2022-12-19 12:36:41 +01:00
libbpf.c
libbpf: Fix the name of a reused map
2022-08-17 14:23:30 +02:00
libbpf.h
libbpf: Add uprobe ref counter offset support for USDT semaphores
2021-08-17 00:45:08 +02:00
libbpf.map
libbpf: Add bpf_cookie to perf_event, kprobe, uprobe, and tp attach APIs
2021-08-17 00:45:08 +02:00
libbpf.pc.template
libbpf: Add zlib as a dependency in pkg-config template
2019-12-16 14:55:29 -08:00
linker.c
libbpf: Fix using invalidated memory in bpf_linker
2022-01-27 11:03:16 +01:00
Makefile
libbpf: Fix build issue with llvm-readelf
2022-04-13 20:59:03 +02:00
netlink.c
libbpf: Fix memleak in libbpf_netlink_recv()
2022-04-08 14:23:31 +02:00
nlattr.c
libbpf: Switch to void * casting in netlink helpers
2021-06-22 17:04:02 +02:00
nlattr.h
libbpf: Switch to void * casting in netlink helpers
2021-06-22 17:04:02 +02:00
relo_core.c
libbpf: Split CO-RE logic into relo_core.c.
2021-07-26 12:29:14 -07:00
relo_core.h
libbpf: Split CO-RE logic into relo_core.c.
2021-07-26 12:29:14 -07:00
ringbuf.c
libbpf: Handle size overflow for ringbuf mmap
2022-12-08 11:28:39 +01:00
skel_internal.h
libbpf: Fix skel_internal.h to set errno on loader retval < 0
2021-11-18 19:16:27 +01:00
str_error.c
libbpf: Poison kernel-only integer types
2020-01-10 10:38:00 -08:00
str_error.h
…
strset.c
libbpf: Fix memory leak in strset
2021-10-01 22:54:38 +02:00
strset.h
libbpf: Extract internal set-of-strings datastructure APIs
2021-03-18 16:14:22 -07:00
xsk.c
selftests/xsk: Avoid use-after-free on ctx
2022-10-26 12:34:41 +02:00
xsk.h
libbpf: xsk: Move barriers from libbpf_util.h to xsk.h
2021-03-10 13:45:16 -08:00