From: Ian Rogers <irogers@google.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@chromium.org>, Kajol Jain <kjain@linux.ibm.com>,
Andi Kleen <ak@linux.intel.com>,
John Garry <john.garry@huawei.com>,
Jin Yao <yao.jin@linux.intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
Cong Wang <xiyou.wangcong@gmail.com>,
Kim Phillips <kim.phillips@amd.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Leo Yan <leo.yan@linaro.org>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org
Cc: Stephane Eranian <eranian@google.com>, Ian Rogers <irogers@google.com>
Subject: [PATCH 4/8] libbpf hashmap: Localize static hashmap__* symbols
Date: Thu, 14 May 2020 23:56:20 -0700 [thread overview]
Message-ID: <20200515065624.21658-5-irogers@google.com> (raw)
In-Reply-To: <20200515065624.21658-1-irogers@google.com>
Localize the hashmap__* symbols in libbpf.a. To allow for a version in
libapi.
Before:
$ nm libbpf.a
...
000000000002088a t hashmap_add_entry
000000000001712a t hashmap__append
0000000000020aa3 T hashmap__capacity
000000000002099c T hashmap__clear
00000000000208b3 t hashmap_del_entry
0000000000020fc1 T hashmap__delete
0000000000020f29 T hashmap__find
0000000000020c6c t hashmap_find_entry
0000000000020a61 T hashmap__free
0000000000020b08 t hashmap_grow
00000000000208dd T hashmap__init
0000000000020d35 T hashmap__insert
0000000000020ab5 t hashmap_needs_to_grow
0000000000020947 T hashmap__new
0000000000000775 t hashmap__set
00000000000212f8 t hashmap__set
0000000000020a91 T hashmap__size
...
After:
$ nm libbpf.a
...
000000000002088a t hashmap_add_entry
000000000001712a t hashmap__append
0000000000020aa3 t hashmap__capacity
000000000002099c t hashmap__clear
00000000000208b3 t hashmap_del_entry
0000000000020fc1 t hashmap__delete
0000000000020f29 t hashmap__find
0000000000020c6c t hashmap_find_entry
0000000000020a61 t hashmap__free
0000000000020b08 t hashmap_grow
00000000000208dd t hashmap__init
0000000000020d35 t hashmap__insert
0000000000020ab5 t hashmap_needs_to_grow
0000000000020947 t hashmap__new
0000000000000775 t hashmap__set
00000000000212f8 t hashmap__set
0000000000020a91 t hashmap__size
...
Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/lib/bpf/Makefile | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index aee7f1a83c77..4a1cdbceb04e 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -20,6 +20,7 @@ srctree := $(patsubst %/,%,$(dir $(srctree)))
endif
INSTALL = install
+OBJCOPY ?= objcopy
# Use DESTDIR for installing into a different root directory.
# This is useful for building a package. The program will be
@@ -181,6 +182,7 @@ $(BPF_IN_SHARED): force elfdep zdep bpfdep $(BPF_HELPER_DEFS)
$(BPF_IN_STATIC): force elfdep zdep bpfdep $(BPF_HELPER_DEFS)
$(Q)$(MAKE) $(build)=libbpf OUTPUT=$(STATIC_OBJDIR)
+ $(Q)$(OBJCOPY) -w -L hashmap__\* $@
$(BPF_HELPER_DEFS): $(srctree)/tools/include/uapi/linux/bpf.h
$(QUIET_GEN)$(srctree)/scripts/bpf_helpers_doc.py --header \
--
2.26.2.761.g0e0b3e54be-goog
next prev parent reply other threads:[~2020-05-15 6:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 6:56 [PATCH 0/8] Copy hashmap to libapi, use in perf expr Ian Rogers
2020-05-15 6:56 ` [PATCH 1/8] libbpf: Fix memory leak and possible double-free in hashmap__clear Ian Rogers
2020-05-15 6:56 ` [PATCH 2/8] libbpf hashmap: Remove unused #include Ian Rogers
2020-05-15 6:56 ` [PATCH 3/8] libbpf hashmap: Fix signedness warnings Ian Rogers
2020-05-15 6:56 ` Ian Rogers [this message]
2020-05-15 9:17 ` [PATCH 4/8] libbpf hashmap: Localize static hashmap__* symbols Jiri Olsa
2020-05-15 14:29 ` Arnaldo Carvalho de Melo
2020-05-15 14:53 ` Ian Rogers
2020-05-15 16:31 ` Arnaldo Carvalho de Melo
2020-05-15 16:59 ` Ian Rogers
2020-05-15 6:56 ` [PATCH 5/8] tools lib/api: Copy libbpf hashmap to libapi Ian Rogers
2020-05-15 6:56 ` [PATCH 6/8] perf test: Provide a subtest callback to ask for the reason for skipping a subtest Ian Rogers
2020-05-15 6:56 ` [PATCH 7/8] perf test: Improve pmu event metric testing Ian Rogers
2020-05-15 6:56 ` [PATCH 8/8] perf expr: Migrate expr ids table to a hashmap Ian Rogers
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