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[12.32.117.8]) by smtp.googlemail.com with ESMTPSA id 11sm3820959pfu.155.2019.06.06.10.49.35 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Thu, 06 Jun 2019 10:49:35 -0700 (PDT) Subject: =?UTF-8?Q?Re=3a_DTrace_SDT_probes_in_kernel_module_=e2=80=94_how_to?= =?UTF-8?Q?=3f?= To: lev@FreeBSD.org, freebsd-hackers@freebsd.org References: <234087607.20190606204312@serebryakov.spb.ru> From: Navdeep Parhar Message-ID: <330a2a83-0fe8-e599-5b36-3b347acdd557@gmail.com> Date: Thu, 6 Jun 2019 10:49:34 -0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <234087607.20190606204312@serebryakov.spb.ru> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E13FC775FE X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=ZH2Xen7m; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of nparhar@gmail.com designates 2607:f8b0:4864:20::434 as permitted sender) smtp.mailfrom=nparhar@gmail.com X-Spamd-Result: default: False [-5.91 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; NEURAL_HAM_SHORT(-1.00)[-0.996,0]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; IP_SCORE(-2.90)[ip: (-8.92), ipnet: 2607:f8b0::/32(-3.22), asn: 15169(-2.29), country: US(-0.06)]; SUBJECT_ENDS_QUESTION(1.00)[]; RCVD_IN_DNSWL_NONE(0.00)[4.3.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Jun 2019 17:49:39 -0000 On 2019-06-06 10:43, Lev Serebryakov wrote: > Hello Freebsd-hackers, > > What should I do to add SDT probes into kernel module. I've tried to add simple > > DTRACE_PROBE1(module__name, type, value); > > to source code. No errors, no probes after module load. I've added WITH_CTF=1 to make > command line. Warnings from ctfmerge, no probes after module load. > > What is proper way to add SDT probes to module and how should I build it? > Have you seen https://wiki.freebsd.org/DTrace/HowToAddSDTProbes ? Please update it if it's out of date. Regards, Navdeep