Song Liu d4b4dd6ce7 libbpf: Print hint when PERF_EVENT_IOC_SET_BPF returns -EPROTO ...

The kernel prevents potential unwinder warnings and crashes by blocking
BPF program with bpf_get_[stack|stackid] on perf_event without
PERF_SAMPLE_CALLCHAIN, or with exclude_callchain_[kernel|user]. Print a
hint message in libbpf to help the user debug such issues.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200723180648.1429892-4-songliubraving@fb.com

2020-07-25 20:16:35 -07:00

..

api

libsymbols kallsyms: Parse using io api

2020-05-05 16:35:32 -03:00

bpf

libbpf: Print hint when PERF_EVENT_IOC_SET_BPF returns -EPROTO

2020-07-25 20:16:35 -07:00

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: Fix OPT_CALLBACK_SET()

2020-07-17 09:33:06 -03:00

symbol

libsymbols kallsyms: Move hex2u64 out of header

2020-05-05 16:35:32 -03:00

traceevent

tools lib traceevent: Add proper KBUFFER_TYPE_TIME_STAMP handling

2020-07-03 08:45:38 -03:00

argv_split.c

tools lib: Move argv_{split,free} from tools/perf/util/

2019-07-01 22:50:40 -03:00

bitmap.c

tools bitmap: Implement bitmap_equal() operation at bitmap API

2020-01-06 11:46:04 -03:00

ctype.c

tools perf: Move from sane_ctype.h obtained from git to the Linux's original

2019-06-25 21:02:47 -03:00

find_bit.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

hweight.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rbtree.c

lib/rbtree: fix coding style of assignments

2020-04-07 10:43:43 -07:00

str_error_r.c

objtool, perf: Fix GCC 8 -Wrestrict error

2018-03-19 13:51:54 -03:00

string.c

tools lib: Fix builds when glibc contains strlcpy()

2020-01-06 11:46:10 -03:00

vsprintf.c

perf script: Pad DSO name for --call-trace

2019-05-28 18:37:44 -03:00

zalloc.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00