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Message-ID: <156689437609.24505.834539880681540435.tip-bot2@tip-bot2>
Date: Tue, 27 Aug 2019 08:26:16 -0000
From: tip-bot2 for Arnaldo Carvalho de Melo <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Adrian Hunter <adrian.hunter@...el.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf augmented_raw_syscalls: Reduce
perf_event_output() boilerplate
The following commit has been merged into the perf/core branch of tip:
Commit-ID: e051c2f69850e571cb408b555aaffb00c07dbb05
Gitweb: https://git.kernel.org/tip/e051c2f69850e571cb408b555aaffb00c07dbb05
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Fri, 23 Aug 2019 15:54:02 -03:00
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitterDate: Mon, 26 Aug 2019 11:58:29 -03:00
perf augmented_raw_syscalls: Reduce perf_event_output() boilerplate
Add a augmented__output() helper to reduce the boilerplate of sending
the augmented tracepoint to the PERF_EVENT_ARRAY BPF map associated with
the bpf-output event used to communicate with the userspace perf trace
tool.
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: https://lkml.kernel.org/n/tip-ln99gt0j4fv0kw0778h6vphm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/examples/bpf/augmented_raw_syscalls.c | 24 +++++++--------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c b/tools/perf/examples/bpf/augmented_raw_syscalls.c
index 8fd5ea0..b804379 100644
--- a/tools/perf/examples/bpf/augmented_raw_syscalls.c
+++ b/tools/perf/examples/bpf/augmented_raw_syscalls.c
@@ -87,6 +87,12 @@ static inline struct augmented_args_payload *augmented_args_payload(void)
return bpf_map_lookup_elem(&augmented_args_tmp, &key);
}
+static inline int augmented__output(void *ctx, struct augmented_args_payload *args, int len)
+{
+ /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
+ return perf_event_output(ctx, &__augmented_syscalls__, BPF_F_CURRENT_CPU, args, len);
+}
+
static inline
unsigned int augmented_arg__read_str(struct augmented_arg *augmented_arg, const void *arg, unsigned int arg_len)
{
@@ -142,8 +148,7 @@ int sys_enter_connect(struct syscall_enter_args *args)
probe_read(&augmented_args->saddr, socklen, sockaddr_arg);
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len + socklen);
+ return augmented__output(args, augmented_args, len + socklen);
}
SEC("!syscalls:sys_enter_sendto")
@@ -162,8 +167,7 @@ int sys_enter_sendto(struct syscall_enter_args *args)
probe_read(&augmented_args->saddr, socklen, sockaddr_arg);
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len + socklen);
+ return augmented__output(args, augmented_args, len + socklen);
}
SEC("!syscalls:sys_enter_open")
@@ -178,8 +182,7 @@ int sys_enter_open(struct syscall_enter_args *args)
len += augmented_arg__read_str(&augmented_args->arg, filename_arg, sizeof(augmented_args->arg.value));
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len);
+ return augmented__output(args, augmented_args, len);
}
SEC("!syscalls:sys_enter_openat")
@@ -194,8 +197,7 @@ int sys_enter_openat(struct syscall_enter_args *args)
len += augmented_arg__read_str(&augmented_args->arg, filename_arg, sizeof(augmented_args->arg.value));
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len);
+ return augmented__output(args, augmented_args, len);
}
SEC("!syscalls:sys_enter_rename")
@@ -212,8 +214,7 @@ int sys_enter_rename(struct syscall_enter_args *args)
oldpath_len = augmented_arg__read_str(&augmented_args->arg, oldpath_arg, sizeof(augmented_args->arg.value));
len += oldpath_len + augmented_arg__read_str((void *)(&augmented_args->arg) + oldpath_len, newpath_arg, sizeof(augmented_args->arg.value));
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len);
+ return augmented__output(args, augmented_args, len);
}
SEC("!syscalls:sys_enter_renameat")
@@ -230,8 +231,7 @@ int sys_enter_renameat(struct syscall_enter_args *args)
oldpath_len = augmented_arg__read_str(&augmented_args->arg, oldpath_arg, sizeof(augmented_args->arg.value));
len += oldpath_len + augmented_arg__read_str((void *)(&augmented_args->arg) + oldpath_len, newpath_arg, sizeof(augmented_args->arg.value));
- /* If perf_event_output fails, return non-zero so that it gets recorded unaugmented */
- return perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, augmented_args, len);
+ return augmented__output(args, augmented_args, len);
}
SEC("raw_syscalls:sys_enter")
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