From: Wang Nan <wangnan0@huawei.com>
To: <acme@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <joe@ovn.org>,
Wang Nan <wangnan0@huawei.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
"Alexei Starovoitov" <ast@fb.com>, He Kuang <hekuang@huawei.com>,
Jiri Olsa <jolsa@kernel.org>, Zefan Li <lizefan@huawei.com>,
<pi3orama@163.com>
Subject: [PATCH v4 14/18] perf clang: Link BPF functions declaration into perf
Date: Tue, 6 Dec 2016 07:13:52 +0000 [thread overview]
Message-ID: <20161206071356.5312-15-wangnan0@huawei.com> (raw)
In-Reply-To: <20161206071356.5312-1-wangnan0@huawei.com>
Hardcode BPF functions declarations. Following commits will utilizes
clang's virtual file system to automatically include this header to
all BPF scripts.
The generated header is wrapped by a BUILTIN_CLANG_NO_DEFAULT_INCLUDE.
This macro will be used by following commits to allow user disable this
feature.
The C string looks ugly and heavily uses magic numbers because the
header is designed to be included automatically at very first, makes
any dependency or potential conflict harmful. Actually it is
automatically generated using a script:
https://patchwork.kernel.org/patch/9350221
However, that script is fragile so not included by this commit.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
---
tools/perf/util/c++/Build | 1 +
tools/perf/util/c++/bpf-funcs-str.c | 49 ++++++++++++++++++++++++++++++++
tools/perf/util/c++/clang-bpf-includes.h | 12 ++++++++
3 files changed, 62 insertions(+)
create mode 100644 tools/perf/util/c++/bpf-funcs-str.c
create mode 100644 tools/perf/util/c++/clang-bpf-includes.h
diff --git a/tools/perf/util/c++/Build b/tools/perf/util/c++/Build
index 988fef1..bd71abf 100644
--- a/tools/perf/util/c++/Build
+++ b/tools/perf/util/c++/Build
@@ -1,2 +1,3 @@
libperf-$(CONFIG_CLANGLLVM) += clang.o
libperf-$(CONFIG_CLANGLLVM) += clang-test.o
+libperf-$(CONFIG_CLANGLLVM) += bpf-funcs-str.o
diff --git a/tools/perf/util/c++/bpf-funcs-str.c b/tools/perf/util/c++/bpf-funcs-str.c
new file mode 100644
index 0000000..ab1a0e3
--- /dev/null
+++ b/tools/perf/util/c++/bpf-funcs-str.c
@@ -0,0 +1,49 @@
+#include "clang-bpf-includes.h"
+const char clang_builtin_bpf_funcs_str[] =
+"#ifdef BUILTIN_CLANG_DEFAULT_INCLUDE\n"
+"#ifndef BPF_FUNCS_DEFINED\n"
+"#define BPF_FUNCS_DEFINED\n"
+"static void *(*bpf_map_lookup_elem)(void *, void *) = (void *)1;\n"
+"static long (*bpf_map_update_elem)(void *, void *, void *, unsigned long) = (void *)2;\n"
+"static long (*bpf_map_delete_elem)(void *, void *) = (void *)3;\n"
+"static long (*bpf_probe_read)(void *, unsigned long, unsigned long) = (void *)4;\n"
+"static long (*bpf_ktime_get_ns)(void) = (void *)5;\n"
+"static long (*bpf_trace_printk)(void *, unsigned long, ...) = (void *)6;\n"
+"static long (*bpf_get_prandom_u32)(void) = (void *)7;\n"
+"static long (*bpf_get_smp_processor_id)(void) = (void *)8;\n"
+"static long (*bpf_skb_store_bytes)(void *, unsigned long, void *, unsigned long, unsigned long) = (void *)9;\n"
+"static long (*bpf_l3_csum_replace)(void *, unsigned long, unsigned long, unsigned long, unsigned long) = (void *)10;\n"
+"static long (*bpf_l4_csum_replace)(void *, unsigned long, unsigned long, unsigned long, unsigned long) = (void *)11;\n"
+"static void (*bpf_tail_call)(void *, void *, unsigned long) = (void *)12;\n"
+"static long (*bpf_clone_redirect)(void *, unsigned long, unsigned long) = (void *)13;\n"
+"static long (*bpf_get_current_pid_tgid)(void) = (void *)14;\n"
+"static long (*bpf_get_current_uid_gid)(void) = (void *)15;\n"
+"static long (*bpf_get_current_comm)(void *, unsigned long) = (void *)16;\n"
+"static long (*bpf_get_cgroup_classid)(void *) = (void *)17;\n"
+"static long (*bpf_skb_vlan_push)(void *, unsigned long, unsigned long) = (void *)18;\n"
+"static long (*bpf_skb_vlan_pop)(void *) = (void *)19;\n"
+"static long (*bpf_skb_get_tunnel_key)(void *, void *, unsigned long, unsigned long) = (void *)20;\n"
+"static long (*bpf_skb_set_tunnel_key)(void *, void *, unsigned long, unsigned long) = (void *)21;\n"
+"static long (*bpf_perf_event_read)(void *, unsigned long) = (void *)22;\n"
+"static long (*bpf_redirect)(unsigned long, unsigned long) = (void *)23;\n"
+"static long (*bpf_get_route_realm)(void *) = (void *)24;\n"
+"static long (*bpf_perf_event_output)(void *, void *, unsigned long, void *, unsigned long) = (void *)25;\n"
+"static long (*bpf_skb_load_bytes)(void *, unsigned long, void *, unsigned long) = (void *)26;\n"
+"static long (*bpf_get_stackid)(void *, void *, unsigned long) = (void *)27;\n"
+"static long (*bpf_csum_diff)(void *, unsigned long, void *, unsigned long, unsigned long) = (void *)28;\n"
+"static long (*bpf_skb_get_tunnel_opt)(void *, void *, unsigned long) = (void *)29;\n"
+"static long (*bpf_skb_set_tunnel_opt)(void *, void *, unsigned long) = (void *)30;\n"
+"static long (*bpf_skb_change_proto)(void *, unsigned long, unsigned long) = (void *)31;\n"
+"static long (*bpf_skb_change_type)(void *, unsigned long) = (void *)32;\n"
+"static long (*bpf_skb_under_cgroup)(void *, void *, unsigned long) = (void *)33;\n"
+"static long (*bpf_get_hash_recalc)(void *) = (void *)34;\n"
+"static long (*bpf_get_current_task)(void) = (void *)35;\n"
+"static long (*bpf_probe_write_user)(unsigned long, void *, unsigned long) = (void *)36;\n"
+"static long (*bpf_current_task_under_cgroup)(void *, unsigned long) = (void *)37;\n"
+"static long (*bpf_skb_change_tail)(void *, unsigned long, unsigned long) = (void *)38;\n"
+"static long (*bpf_skb_pull_data)(void *, unsigned long) = (void *)39;\n"
+"static long (*bpf_csum_update)(void *, unsigned long) = (void *)40;\n"
+"static long (*bpf_set_hash_invalid)(void *) = (void *)41;\n"
+"#endif\n"
+"#endif\n"
+;
diff --git a/tools/perf/util/c++/clang-bpf-includes.h b/tools/perf/util/c++/clang-bpf-includes.h
new file mode 100644
index 0000000..385a5bb
--- /dev/null
+++ b/tools/perf/util/c++/clang-bpf-includes.h
@@ -0,0 +1,12 @@
+#ifndef CLANG_BPF_INCLUDS_H
+#define CLANG_BPF_INCLUDS_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern const char clang_builtin_bpf_funcs_str[];
+
+#ifdef __cplusplus
+}
+#endif
+#endif
--
2.10.1
next prev parent reply other threads:[~2016-12-06 7:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-06 7:13 [PATCH v4 00/18] perf clang: Builtin clang and perfhook support Wang Nan
2016-12-06 7:13 ` [PATCH v4 01/18] perf build: Check LLVM version in feature check Wang Nan
2016-12-06 7:20 ` Wangnan (F)
2016-12-06 7:22 ` [PATCH v4 01/18 -cleanup] " Wang Nan
2016-12-06 14:02 ` Arnaldo Carvalho de Melo
2016-12-07 18:22 ` [tip:perf/core] " tip-bot for Wang Nan
2016-12-06 7:13 ` [PATCH v4 02/18] perf build: Support dynamic linking clang libraries Wang Nan
2016-12-06 7:13 ` [PATCH v4 03/18] perf clang: Cleanup clang options Wang Nan
2016-12-06 7:13 ` [PATCH v4 04/18] perf clang: Pass full path to builtin clang Wang Nan
2016-12-06 7:13 ` [PATCH v4 05/18] perf clang: Pass CFLAGS " Wang Nan
2016-12-06 7:13 ` [PATCH v4 06/18] perf clang jit: Wrap llvm::Module using PerfModule Wang Nan
2016-12-06 7:13 ` [PATCH v4 07/18] perf clang jit: Insignt BPF and JIT functions in a Module Wang Nan
2016-12-06 7:13 ` [PATCH v4 08/18] perf clang jit: add PerfModule::doJIT to JIT perfhook functions Wang Nan
2016-12-06 7:13 ` [PATCH v4 09/18] perf clang jit: Export functions for jitted code Wang Nan
2016-12-06 7:13 ` [PATCH v4 10/18] perf clang jit: Actually JIT and hook in bpf loader Wang Nan
2016-12-06 7:13 ` [PATCH v4 11/18] perf clang jit: Collect the lowest address in maps section as map_base Wang Nan
2016-12-06 7:13 ` [PATCH v4 12/18] perf clang jit: Retrive fd of BPF map from its offset Wang Nan
2016-12-06 7:13 ` [PATCH v4 13/18] perf clang jit: Allow jitted perf hook access BPF maps Wang Nan
2016-12-06 7:13 ` Wang Nan [this message]
2016-12-06 7:13 ` [PATCH v4 15/18] perf clang: Declare BPF functions for BPF scripts automatically Wang Nan
2016-12-06 7:13 ` [PATCH v4 16/18] perf clang: Include helpers to BPF scripts Wang Nan
2016-12-06 7:13 ` [PATCH v4 17/18] perf clang builtin: Define hook helpers by default Wang Nan
2016-12-06 7:13 ` [PATCH v4 18/18] perf clang jit: Export getpid() to perf hook Wang Nan
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