From: Peter Zijlstra <peterz@infradead.org>
To: Ze Gao <zegao2021@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Ian Rogers <irogers@google.com>, Ingo Molnar <mingo@redhat.com>,
Jiri Olsa <jolsa@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-trace-devel@vger.kernel.org, Ze Gao <zegao@tencent.com>
Subject: Re: [RFC PATCH v3 4/6] sched, tracing: reorganize fields of switch event struct
Date: Tue, 1 Aug 2023 13:46:50 +0200 [thread overview]
Message-ID: <20230801114650.GE79828@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20230801090124.8050-5-zegao@tencent.com>
On Tue, Aug 01, 2023 at 05:01:22PM +0800, Ze Gao wrote:
> Report priorities in 'short' and prev_state in 'int' to save
> some buffer space. And also reorder the fields so that we take
> struct alignment into consideration to make the record compact.
>
> Suggested-by: Steven Rostedt (Google) <rostedt@goodmis.org>
I don't see a single line describing the effort you've done to audit
consumers of this tracepoint.
*IF* you're wanting to break this tracepoint ABI, because seriously
that's what it is, then you get to invest the time and effort to audit
the users.
next prev parent reply other threads:[~2023-08-01 11:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-01 9:01 [RFC PATCH v3 0/6] add to report task state in symbolic chars from sched tracepoint Ze Gao
2023-08-01 9:01 ` [RFC PATCH v3 1/6] perf sched: sync state char array with the kernel Ze Gao
2023-08-01 9:01 ` [RFC PATCH v3 2/6] perf sched: reorganize sched-out task state report code Ze Gao
2023-08-01 9:01 ` [RFC PATCH v3 3/6] sched, tracing: add to report task state in symbolic chars Ze Gao
2023-08-01 11:34 ` Peter Zijlstra
2023-08-01 13:03 ` Ze Gao
2023-08-01 13:41 ` Peter Zijlstra
2023-08-02 3:03 ` Ze Gao
2023-08-01 11:45 ` Peter Zijlstra
2023-08-01 13:08 ` Ze Gao
2023-08-01 14:27 ` Steven Rostedt
2023-08-01 9:01 ` [RFC PATCH v3 4/6] sched, tracing: reorganize fields of switch event struct Ze Gao
2023-08-01 11:46 ` Peter Zijlstra [this message]
2023-08-01 13:16 ` Ze Gao
2023-08-01 14:33 ` Steven Rostedt
2023-08-02 3:06 ` Ze Gao
2023-08-01 14:16 ` Steven Rostedt
2023-08-02 3:07 ` Ze Gao
2023-08-01 9:01 ` [RFC PATCH v3 5/6] perf sched: prefer to use prev_state_char introduced in sched_switch Ze Gao
2023-08-01 9:01 ` [RFC PATCH v3 6/6] libtraceevent: " Ze Gao
2023-08-01 14:19 ` Steven Rostedt
2023-08-02 3:08 ` Ze Gao
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