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2024-08-21perf bpf: Remove redundant check that map is NULLYang Ruibin1-3/+0
The check that map is NULL is already done in the bpf_map__fd(map) and returns an errno, which does not run further checks. In addition, even if the check for map is run, the return is a pointer, which is not consistent with the err_number returned by bpf_map__fd(map). Signed-off-by: Yang Ruibin <11162571@vivo.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: opensource.kernel@vivo.com Link: https://lore.kernel.org/r/20240821101500.4568-1-11162571@vivo.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-12perf: Stop using bpf_map__def() APIChristy Lee1-14/+14
libbpf bpf_map__def() API is being deprecated, replace perf's usage with the appropriate getters and setters. Signed-off-by: Christy Lee <christylee@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20220108004218.355761-4-christylee@fb.com
2019-02-19perf bpf: Add bpf_map dumperArnaldo Carvalho de Melo1-0/+72
At some point I'll suggest moving this to libbpf, for now I'll experiment with ways to dump BPF maps set by events in 'perf trace', starting with a very basic dumper for the current very limited needs of the augmented_raw_syscalls code: dumping booleans. Having functions that apply to the map keys and values and do table lookup in things like syscall id to string tables should come next. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-lz14w0esqyt1333aon05jpwc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>