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([2804:1b3:a803:46cc:5b68:5c23:dd7a:8cb3]) by smtp.gmail.com with ESMTPSA id j16-20020a9d7690000000b006a6558ef17fsm11450965otl.30.2023.05.15.11.47.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 May 2023 11:47:56 -0700 (PDT) Message-ID: Subject: Re: [RFC PATCH v4 0/2] trace,smp: Add tracepoints for csd From: Leonardo =?ISO-8859-1?Q?Br=E1s?= To: Thomas Gleixner , Sebastian Andrzej Siewior , Nadav Amit , Chen Zhongjin , Daniel Bristot de Oliveira , Marcelo Tosatti , Steven Rostedt , Masami Hiramatsu , Peter Zijlstra , "Paul E. McKenney" , Juergen Gross , Valentin Schneider , Yury Norov Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Date: Mon, 15 May 2023 15:47:51 -0300 In-Reply-To: <20230515183045.654199-1-leobras@redhat.com> References: <20230515183045.654199-1-leobras@redhat.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.48.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2023-05-15 at 15:30 -0300, Leonardo Bras wrote: > Changes since RFCv3: > - Split the patch in 2: entry/exit and queue > - Fix 'struct __call_single_data' & call_single_data_t alignment issue > - Made all TP_printk follow the same pattern >=20 > Changes since RFCv2: > - Fixed some spacing issues and trace calls >=20 > Changes since RFCv1: > - Implemented trace_csd_queue_cpu() as suggested by Valentin Schneider > - Using EVENT_CLASS in order to avoid duplication > - Introduced new helper: csd_do_func() > - Name change from smp_call_function_* to csd_function_* > - Rebased on top of torvalds/master >=20 > Leonardo Bras (2): > trace,smp: Add tracepoints around remotelly called functions > trace,smp: Add tracepoints for scheduling remotelly called functions >=20 > include/trace/events/smp.h | 72 ++++++++++++++++++++++++++++++++++++++ > kernel/smp.c | 41 +++++++++++++--------- > 2 files changed, 96 insertions(+), 17 deletions(-) > create mode 100644 include/trace/events/smp.h >=20 argh, almost sure some llvm build will output some alignment warning becaus= e csd_do_func() has an=C2=A0'struct __call_single_data' argument while the tr= acepoints have call_single_data_t arguments. Other than that, it should be fine. I will collect other suggestions before sending a v5 with this fix. Leo