Andrii Nakryiko 0e28948730 libbpf: Handle missing BPF_OBJ_GET_INFO_BY_FD gracefully in perf_buffer ... perf_buffer__new() is relying on BPF_OBJ_GET_INFO_BY_FD availability for few sanity checks. OBJ_GET_INFO for maps is actually much more recent feature than perf_buffer support itself, so this causes unnecessary problems on old kernels before BPF_OBJ_GET_INFO_BY_FD was added. This patch makes those sanity checks optional and just assumes best if command is not supported. If user specified something incorrectly (e.g., wrong map type), kernel will reject it later anyway, except user won't get a nice explanation as to why it failed. This seems like a good trade off for supporting perf_buffer on old kernels. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200708015318.3827358-6-andriin@fb.com		2020-07-09 00:44:45 +02:00
..
api	libsymbols kallsyms: Parse using io api	2020-05-05 16:35:32 -03:00
bpf	libbpf: Handle missing BPF_OBJ_GET_INFO_BY_FD gracefully in perf_buffer	2020-07-09 00:44:45 +02:00
lockdep	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
perf	libperf evlist: Fix a refcount leak	2020-05-05 16:35:29 -03:00
subcmd	libsubcmd: Introduce OPT_CALLBACK_SET()	2020-05-05 16:35:29 -03:00
symbol	libsymbols kallsyms: Move hex2u64 out of header	2020-05-05 16:35:32 -03:00
traceevent	tools lib traceevent: Add handler for __builtin_expect()	2020-06-18 10:22:54 -03:00
argv_split.c
bitmap.c	tools bitmap: Implement bitmap_equal() operation at bitmap API	2020-01-06 11:46:04 -03:00
ctype.c
find_bit.c
hweight.c
rbtree.c	lib/rbtree: fix coding style of assignments	2020-04-07 10:43:43 -07:00
str_error_r.c
string.c	tools lib: Fix builds when glibc contains strlcpy()	2020-01-06 11:46:10 -03:00
vsprintf.c
zalloc.c