From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
To: Jiri Olsa <olsajiri@gmail.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Florent Revest <revest@chromium.org>,
linux-trace-kernel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
bpf <bpf@vger.kernel.org>, Sven Schnelle <svens@linux.ibm.com>,
Alexei Starovoitov <ast@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Alan Maguire <alan.maguire@oracle.com>,
Mark Rutland <mark.rutland@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>, Guo Ren <guoren@kernel.org>
Subject: Re: [PATCH v3 28/33] fprobe: Rewrite fprobe on function-graph tracer
Date: Tue, 28 Nov 2023 21:22:46 +0900 [thread overview]
Message-ID: <20231128212246.db6a3dafdab190cc745c4364@kernel.org> (raw)
In-Reply-To: <ZWXGn3_5pN-0fniR@krava>
On Tue, 28 Nov 2023 11:53:19 +0100
Jiri Olsa <olsajiri@gmail.com> wrote:
> On Mon, Nov 27, 2023 at 10:58:40PM +0900, Masami Hiramatsu (Google) wrote:
> > From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> >
> > Rewrite fprobe implementation on function-graph tracer.
> > Major API changes are:
> > - 'nr_maxactive' field is deprecated.
> > - This depends on CONFIG_DYNAMIC_FTRACE_WITH_ARGS or
> > !CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS, and
> > CONFIG_HAVE_FUNCTION_GRAPH_FREGS. So currently works only
> > on x86_64.
> > - Currently the entry size is limited in 15 * sizeof(long).
> > - If there is too many fprobe exit handler set on the same
> > function, it will fail to probe.
> >
> > Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> > ---
> > Changes in v3:
> > - Update for new reserve_data/retrieve_data API.
> > - Fix internal push/pop on fgraph data logic so that it can
> > correctly save/restore the returning fprobes.
>
> hi,
> looks like this one conflicts with recent:
>
> 4bbd93455659 kprobes: kretprobe scalability improvement
Thanks for reporting!
I also found some other patches conflicts with recent commits.
Let me rebase it on the recent branch.
Thank!
>
> jirka
--
Masami Hiramatsu (Google) <mhiramat@kernel.org>
next prev parent reply other threads:[~2023-11-28 12:22 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-27 13:52 [PATCH v3 00/33] tracing: fprobe: function_graph: Multi-function graph and fprobe on fgraph Masami Hiramatsu (Google)
2023-11-27 13:53 ` [PATCH v3 01/33] tracing: Add a comment about ftrace_regs definition Masami Hiramatsu (Google)
2023-11-27 13:53 ` [PATCH v3 02/33] x86: tracing: Add ftrace_regs definition in the header Masami Hiramatsu (Google)
2023-11-27 13:53 ` [PATCH v3 03/33] seq_buf: Export seq_buf_puts() Masami Hiramatsu (Google)
2023-11-27 13:53 ` [PATCH v3 04/33] function_graph: Convert ret_stack to a series of longs Masami Hiramatsu (Google)
2023-11-27 13:53 ` [PATCH v3 05/33] fgraph: Use BUILD_BUG_ON() to make sure we have structures divisible by long Masami Hiramatsu (Google)
2023-11-27 13:54 ` [PATCH v3 06/33] function_graph: Add an array structure that will allow multiple callbacks Masami Hiramatsu (Google)
2023-11-27 13:54 ` [PATCH v3 07/33] function_graph: Allow multiple users to attach to function graph Masami Hiramatsu (Google)
2023-11-27 13:54 ` [PATCH v3 08/33] function_graph: Remove logic around ftrace_graph_entry and return Masami Hiramatsu (Google)
2023-11-27 13:54 ` [PATCH v3 09/33] ftrace/function_graph: Pass fgraph_ops to function graph callbacks Masami Hiramatsu (Google)
2023-11-27 13:54 ` [PATCH v3 10/33] ftrace: Allow function_graph tracer to be enabled in instances Masami Hiramatsu (Google)
2023-11-27 13:55 ` [PATCH v3 11/33] ftrace: Allow ftrace startup flags exist without dynamic ftrace Masami Hiramatsu (Google)
2023-11-27 13:55 ` [PATCH v3 12/33] function_graph: Have the instances use their own ftrace_ops for filtering Masami Hiramatsu (Google)
2023-12-05 14:45 ` Masami Hiramatsu
2023-11-27 13:55 ` [PATCH v3 13/33] function_graph: Add "task variables" per task for fgraph_ops Masami Hiramatsu (Google)
2023-11-27 13:55 ` [PATCH v3 14/33] function_graph: Move set_graph_function tests to shadow stack global var Masami Hiramatsu (Google)
2023-11-27 13:55 ` [PATCH v3 15/33] function_graph: Move graph depth stored data " Masami Hiramatsu (Google)
2023-11-27 13:56 ` [PATCH v3 16/33] function_graph: Move graph notrace bit " Masami Hiramatsu (Google)
2023-11-27 13:56 ` [PATCH v3 17/33] function_graph: Implement fgraph_reserve_data() and fgraph_retrieve_data() Masami Hiramatsu (Google)
2023-11-27 13:56 ` [PATCH v3 18/33] function_graph: Add selftest for passing local variables Masami Hiramatsu (Google)
2023-11-27 13:56 ` [PATCH v3 19/33] function_graph: Add a new entry handler with parent_ip and ftrace_regs Masami Hiramatsu (Google)
2023-11-27 13:57 ` [PATCH v3 20/33] function_graph: Add a new exit " Masami Hiramatsu (Google)
2023-11-27 13:57 ` [PATCH v3 21/33] x86/ftrace: Enable HAVE_FUNCTION_GRAPH_FREGS Masami Hiramatsu (Google)
2023-11-27 13:57 ` [PATCH v3 22/33] tracing: Rename ftrace_regs_return_value to ftrace_regs_get_return_value Masami Hiramatsu (Google)
2023-11-27 13:57 ` [PATCH v3 23/33] arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_FREGS Masami Hiramatsu (Google)
2023-11-27 13:57 ` [PATCH v3 24/33] fprobe: Use ftrace_regs in fprobe entry handler Masami Hiramatsu (Google)
2023-11-27 13:58 ` [PATCH v3 25/33] fprobe: Use ftrace_regs in fprobe exit handler Masami Hiramatsu (Google)
2023-11-27 13:58 ` [PATCH v3 26/33] tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs Masami Hiramatsu (Google)
2023-11-27 13:58 ` [PATCH v3 27/33] tracing: Add ftrace_fill_perf_regs() for perf event Masami Hiramatsu (Google)
2023-11-27 13:58 ` [PATCH v3 28/33] fprobe: Rewrite fprobe on function-graph tracer Masami Hiramatsu (Google)
2023-11-28 10:53 ` Jiri Olsa
2023-11-28 12:22 ` Masami Hiramatsu [this message]
2023-11-27 13:58 ` [PATCH v3 29/33] tracing/fprobe: Remove nr_maxactive from fprobe Masami Hiramatsu (Google)
2023-11-27 13:59 ` [PATCH v3 30/33] tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS Masami Hiramatsu (Google)
2023-11-27 13:59 ` [PATCH v3 31/33] bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled Masami Hiramatsu (Google)
2023-11-27 13:59 ` [PATCH v3 32/33] selftests: ftrace: Remove obsolate maxactive syntax check Masami Hiramatsu (Google)
2023-11-27 13:59 ` [PATCH v3 33/33] Documentation: probes: Update fprobe on function-graph tracer Masami Hiramatsu (Google)
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