From: Alexei Starovoitov <ast@plumgrid.com>
To: Wang Nan <wangnan0@huawei.com>,
acme@kernel.org, brendan.d.gregg@gmail.com, daniel@iogearbox.net,
namhyung@kernel.org, masami.hiramatsu.pt@hitachi.com,
paulus@samba.org, a.p.zijlstra@chello.nl, mingo@redhat.com,
jolsa@kernel.org, dsahern@gmail.com
Cc: linux-kernel@vger.kernel.org, lizefan@huawei.com,
hekuang@huawei.com, xiakaixu@huawei.com, pi3orama@163.com
Subject: Re: [RFC PATCH v8 47/49] perf tools: Generate prologue for BPF programs
Date: Fri, 26 Jun 2015 01:40:08 -0700 [thread overview]
Message-ID: <558D0FE8.4010907@plumgrid.com> (raw)
In-Reply-To: <1435149113-51142-48-git-send-email-wangnan0@huawei.com>
On 6/24/15 5:31 AM, Wang Nan wrote:
> This patch generates prologue for each 'struct probe_trace_event' for
> fetching arguments for BPF programs.
>
> After bpf__probe(), iterate over each programs to check whether
> prologue is required. If non of tev have argument, simply skip
> preprocessor hooking. For those who prologue is required, calls
> bpf__gen_prologue() and paste original instruction after prologue.
please don't abbreviate tev, pev in commit logs. It's hard to read
for anyone but core perf experts.
next prev parent reply other threads:[~2015-06-26 8:40 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-24 12:31 [RFC PATCH v8 00/49] perf tools: filtering events using eBPF programs Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 01/49] tools build: Add feature check for eBPF API Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 02/49] bpf tools: Introduce 'bpf' library to tools Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 03/49] bpf tools: Allow caller to set printing function Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 04/49] bpf tools: Open eBPF object file and do basic validation Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 05/49] bpf tools: Read eBPF object from buffer Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 06/49] bpf tools: Check endianess and make libbpf fail early Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 07/49] bpf tools: Iterate over ELF sections to collect information Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 08/49] bpf tools: Collect version and license from ELF sections Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 09/49] bpf tools: Collect map definitions from 'maps' section Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 10/49] bpf tools: Collect symbol table from SHT_SYMTAB section Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 11/49] bpf tools: Collect eBPF programs from their own sections Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 12/49] bpf tools: Collect relocation sections from SHT_REL sections Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 13/49] bpf tools: Record map accessing instructions for each program Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 14/49] bpf tools: Add bpf.c/h for common bpf operations Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 15/49] bpf tools: Create eBPF maps defined in an object file Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 16/49] bpf tools: Relocate eBPF programs Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 17/49] bpf tools: Introduce bpf_load_program() to bpf.c Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 18/49] bpf tools: Load eBPF programs in object files into kernel Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 19/49] bpf tools: Introduce accessors for struct bpf_program Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 20/49] bpf tools: Introduce accessors for struct bpf_object Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 21/49] bpf tools: Link all bpf objects onto a list Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 22/49] perf tools: Make perf depend on libbpf Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 23/49] perf tools: Introduce llvm config options Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 24/49] perf tools: Call clang to compile C source to object code Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 25/49] perf tests: Add LLVM test for eBPF on-the-fly compiling Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 26/49] perf tools: Auto detecting kernel build directory Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 27/49] perf tools: Auto detecting kernel include options Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 28/49] perf record: Enable passing bpf object file to --event Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 29/49] perf record: Compile scriptlets if pass '.c' " Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 30/49] perf tools: Parse probe points of eBPF programs during preparation Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 31/49] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 32/49] perf record: Probe at kprobe points Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 33/49] perf record: Load all eBPF object into kernel Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 34/49] perf tools: Add bpf_fd field to evsel and config it Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 35/49] perf tools: Attach eBPF program to perf event Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 36/49] perf tools: Suppress probing messages when probing by BPF loading Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 37/49] perf record: Add clang options for compiling BPF scripts Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 38/49] bpf tools: Load instructions buffer using load_program() Wang Nan
2015-06-26 8:28 ` Alexei Starovoitov
2015-06-26 11:00 ` Wangnan (F)
2015-06-24 12:31 ` [RFC PATCH v8 39/49] bpf tools: Load a program with different instance using preprocessor Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 40/49] perf tools: Fix probe-event.h include Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 41/49] perf probe: Reset tev->args and tev->nargs when failure Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 42/49] perf tools: Move linux/filter.h to tools/include Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 43/49] perf tools: Iterater over tev instead of pev in bpf__for_each_program Wang Nan
2015-06-26 8:29 ` Alexei Starovoitov
2015-06-24 12:31 ` [RFC PATCH v8 44/49] perf tools: Add BPF_PROLOGUE config options for further patches Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 45/49] perf tools: Introduce arch_get_reg_info() for x86 Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 46/49] perf tools: Add prologue for BPF programs for fetching arguments Wang Nan
2015-06-26 4:23 ` Wangnan (F)
2015-06-26 8:32 ` Alexei Starovoitov
2015-06-24 12:31 ` [RFC PATCH v8 47/49] perf tools: Generate prologue for BPF programs Wang Nan
2015-06-26 8:40 ` Alexei Starovoitov [this message]
2015-06-24 12:31 ` [RFC PATCH v8 48/49] perf tools: Use same BPF program if arguments are identical Wang Nan
2015-06-24 12:31 ` [RFC PATCH v8 49/49] perf record: Support custom vmlinux path Wang Nan
2015-06-26 8:37 ` [RFC PATCH v8 00/49] perf tools: filtering events using eBPF programs Alexei Starovoitov
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