From: Alexei Starovoitov <ast@fb.com> To: <davem@davemloft.net> Cc: <daniel@iogearbox.net>, <torvalds@linux-foundation.org>, <peterz@infradead.org>, <rostedt@goodmis.org>, <mathieu.desnoyers@efficios.com>, <netdev@vger.kernel.org>, <kernel-team@fb.com>, <linux-api@vger.kernel.org> Subject: [PATCH v7 bpf-next 08/10] libbpf: add bpf_raw_tracepoint_open helper Date: Tue, 27 Mar 2018 19:11:03 -0700 [thread overview] Message-ID: <20180328021105.4061744-9-ast@fb.com> (raw) In-Reply-To: <20180328021105.4061744-1-ast@fb.com> From: Alexei Starovoitov <ast@kernel.org> add bpf_raw_tracepoint_open(const char *name, int prog_fd) api to libbpf Signed-off-by: Alexei Starovoitov <ast@kernel.org> --- tools/include/uapi/linux/bpf.h | 11 +++++++++++ tools/lib/bpf/bpf.c | 11 +++++++++++ tools/lib/bpf/bpf.h | 1 + 3 files changed, 23 insertions(+) diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index d245c41213ac..58060bec999d 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -94,6 +94,7 @@ enum bpf_cmd { BPF_MAP_GET_FD_BY_ID, BPF_OBJ_GET_INFO_BY_FD, BPF_PROG_QUERY, + BPF_RAW_TRACEPOINT_OPEN, }; enum bpf_map_type { @@ -134,6 +135,7 @@ enum bpf_prog_type { BPF_PROG_TYPE_SK_SKB, BPF_PROG_TYPE_CGROUP_DEVICE, BPF_PROG_TYPE_SK_MSG, + BPF_PROG_TYPE_RAW_TRACEPOINT, }; enum bpf_attach_type { @@ -344,6 +346,11 @@ union bpf_attr { __aligned_u64 prog_ids; __u32 prog_cnt; } query; + + struct { + __u64 name; + __u32 prog_fd; + } raw_tracepoint; } __attribute__((aligned(8))); /* BPF helper function descriptions: @@ -1151,4 +1158,8 @@ struct bpf_cgroup_dev_ctx { __u32 minor; }; +struct bpf_raw_tracepoint_args { + __u64 args[0]; +}; + #endif /* _UAPI__LINUX_BPF_H__ */ diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index 592a58a2b681..e0500055f1a6 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -428,6 +428,17 @@ int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len) return err; } +int bpf_raw_tracepoint_open(const char *name, int prog_fd) +{ + union bpf_attr attr; + + bzero(&attr, sizeof(attr)); + attr.raw_tracepoint.name = ptr_to_u64(name); + attr.raw_tracepoint.prog_fd = prog_fd; + + return sys_bpf(BPF_RAW_TRACEPOINT_OPEN, &attr, sizeof(attr)); +} + int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags) { struct sockaddr_nl sa; diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index 8d18fb73d7fb..ee59342c6f42 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -79,4 +79,5 @@ int bpf_map_get_fd_by_id(__u32 id); int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags, __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt); +int bpf_raw_tracepoint_open(const char *name, int prog_fd); #endif -- 2.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Alexei Starovoitov <ast@fb.com> To: davem@davemloft.net Cc: daniel@iogearbox.net, torvalds@linux-foundation.org, peterz@infradead.org, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, netdev@vger.kernel.org, kernel-team@fb.com, linux-api@vger.kernel.org Subject: [PATCH v7 bpf-next 08/10] libbpf: add bpf_raw_tracepoint_open helper Date: Tue, 27 Mar 2018 19:11:03 -0700 [thread overview] Message-ID: <20180328021105.4061744-9-ast@fb.com> (raw) In-Reply-To: <20180328021105.4061744-1-ast@fb.com> From: Alexei Starovoitov <ast@kernel.org> add bpf_raw_tracepoint_open(const char *name, int prog_fd) api to libbpf Signed-off-by: Alexei Starovoitov <ast@kernel.org> --- tools/include/uapi/linux/bpf.h | 11 +++++++++++ tools/lib/bpf/bpf.c | 11 +++++++++++ tools/lib/bpf/bpf.h | 1 + 3 files changed, 23 insertions(+) diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index d245c41213ac..58060bec999d 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -94,6 +94,7 @@ enum bpf_cmd { BPF_MAP_GET_FD_BY_ID, BPF_OBJ_GET_INFO_BY_FD, BPF_PROG_QUERY, + BPF_RAW_TRACEPOINT_OPEN, }; enum bpf_map_type { @@ -134,6 +135,7 @@ enum bpf_prog_type { BPF_PROG_TYPE_SK_SKB, BPF_PROG_TYPE_CGROUP_DEVICE, BPF_PROG_TYPE_SK_MSG, + BPF_PROG_TYPE_RAW_TRACEPOINT, }; enum bpf_attach_type { @@ -344,6 +346,11 @@ union bpf_attr { __aligned_u64 prog_ids; __u32 prog_cnt; } query; + + struct { + __u64 name; + __u32 prog_fd; + } raw_tracepoint; } __attribute__((aligned(8))); /* BPF helper function descriptions: @@ -1151,4 +1158,8 @@ struct bpf_cgroup_dev_ctx { __u32 minor; }; +struct bpf_raw_tracepoint_args { + __u64 args[0]; +}; + #endif /* _UAPI__LINUX_BPF_H__ */ diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c index 592a58a2b681..e0500055f1a6 100644 --- a/tools/lib/bpf/bpf.c +++ b/tools/lib/bpf/bpf.c @@ -428,6 +428,17 @@ int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len) return err; } +int bpf_raw_tracepoint_open(const char *name, int prog_fd) +{ + union bpf_attr attr; + + bzero(&attr, sizeof(attr)); + attr.raw_tracepoint.name = ptr_to_u64(name); + attr.raw_tracepoint.prog_fd = prog_fd; + + return sys_bpf(BPF_RAW_TRACEPOINT_OPEN, &attr, sizeof(attr)); +} + int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags) { struct sockaddr_nl sa; diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h index 8d18fb73d7fb..ee59342c6f42 100644 --- a/tools/lib/bpf/bpf.h +++ b/tools/lib/bpf/bpf.h @@ -79,4 +79,5 @@ int bpf_map_get_fd_by_id(__u32 id); int bpf_obj_get_info_by_fd(int prog_fd, void *info, __u32 *info_len); int bpf_prog_query(int target_fd, enum bpf_attach_type type, __u32 query_flags, __u32 *attach_flags, __u32 *prog_ids, __u32 *prog_cnt); +int bpf_raw_tracepoint_open(const char *name, int prog_fd); #endif -- 2.9.5
next prev parent reply other threads:[~2018-03-28 2:11 UTC|newest] Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-03-28 2:10 [PATCH v7 bpf-next 00/10] bpf, tracing: introduce bpf raw tracepoints Alexei Starovoitov 2018-03-28 2:10 ` Alexei Starovoitov 2018-03-28 2:10 ` [PATCH v7 bpf-next 01/10] treewide: remove large struct-pass-by-value from tracepoint arguments Alexei Starovoitov 2018-03-28 2:10 ` Alexei Starovoitov 2018-03-28 2:10 ` [PATCH v7 bpf-next 02/10] net/mediatek: disambiguate mt76 vs mt7601u trace events Alexei Starovoitov 2018-03-28 2:10 ` Alexei Starovoitov 2018-03-28 2:10 ` [PATCH v7 bpf-next 03/10] net/mac802154: disambiguate mac80215 vs mac802154 " Alexei Starovoitov 2018-03-28 2:10 ` Alexei Starovoitov 2018-03-28 2:10 ` [PATCH v7 bpf-next 04/10] net/wireless/iwlwifi: fix iwlwifi_dev_ucode_error tracepoint Alexei Starovoitov 2018-03-28 2:10 ` Alexei Starovoitov 2018-03-28 2:11 ` [PATCH v7 bpf-next 05/10] macro: introduce COUNT_ARGS() macro Alexei Starovoitov 2018-03-28 2:11 ` Alexei Starovoitov 2018-03-28 2:11 ` [PATCH v7 bpf-next 06/10] tracepoint: compute num_args at build time Alexei Starovoitov 2018-03-28 2:11 ` Alexei Starovoitov 2018-03-28 13:49 ` Mathieu Desnoyers 2018-03-28 16:43 ` Alexei Starovoitov 2018-03-28 17:04 ` Steven Rostedt 2018-03-28 17:10 ` Alexei Starovoitov 2018-03-28 17:38 ` Steven Rostedt 2018-03-28 18:03 ` Alexei Starovoitov 2018-03-28 18:10 ` Steven Rostedt 2018-03-28 18:19 ` Alexei Starovoitov 2018-03-28 18:54 ` Steven Rostedt 2018-03-28 19:22 ` Mathieu Desnoyers 2018-03-28 19:25 ` Alexei Starovoitov 2018-03-28 19:32 ` Steven Rostedt 2018-03-28 19:38 ` Steven Rostedt 2018-03-28 19:47 ` Mathieu Desnoyers 2018-03-28 17:14 ` Mathieu Desnoyers 2018-03-28 2:11 ` [PATCH v7 bpf-next 07/10] bpf: introduce BPF_RAW_TRACEPOINT Alexei Starovoitov 2018-03-28 2:11 ` Alexei Starovoitov 2018-03-28 17:41 ` Steven Rostedt 2018-03-28 17:41 ` Steven Rostedt 2018-03-28 2:11 ` Alexei Starovoitov [this message] 2018-03-28 2:11 ` [PATCH v7 bpf-next 08/10] libbpf: add bpf_raw_tracepoint_open helper Alexei Starovoitov 2018-03-28 2:11 ` [PATCH v7 bpf-next 09/10] samples/bpf: raw tracepoint test Alexei Starovoitov 2018-03-28 2:11 ` Alexei Starovoitov 2018-03-28 2:11 ` [PATCH v7 bpf-next 10/10] selftests/bpf: test for bpf_get_stackid() from raw tracepoints Alexei Starovoitov 2018-03-28 2:11 ` Alexei Starovoitov
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