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[79.23.205.114]) by smtp.gmail.com with ESMTPSA id gv11sm1054485ejb.13.2021.06.09.05.14.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Jun 2021 05:14:18 -0700 (PDT) Subject: Re: [PATCH V3 8/9] tracing: Add osnoise tracer To: Steven Rostedt Cc: linux-kernel@vger.kernel.org, Phil Auld , Sebastian Andrzej Siewior , Kate Carcia , Jonathan Corbet , Ingo Molnar , Peter Zijlstra , Thomas Gleixner , Alexandre Chartre , Clark Willaims , John Kacur , Juri Lelli , linux-doc@vger.kernel.org References: <20210604172803.527aa070@oasis.local.home> From: Daniel Bristot de Oliveira Message-ID: <06d72b7d-4beb-1dff-b537-e7449abf3d4e@redhat.com> Date: Wed, 9 Jun 2021 14:14:17 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210604172803.527aa070@oasis.local.home> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On 6/4/21 11:28 PM, Steven Rostedt wrote: >> +#ifdef CONFIG_X86_LOCAL_APIC > I wonder if we should move this into a separate file, making the > __trace_irq_entry() a more name space safe name and have it call that. > I have a bit of a distaste for arch specific code in a generic file. > I am placing the intel specific file in: arch/x86/kernel/trace_osnoise.c and the kernel/trace/trace_osnoise.h looks like this: #ifdef CONFIG_X86_LOCAL_APIC int osnoise_arch_register(void); int osnoise_arch_unregister(void); #else /* CONFIG_X86_LOCAL_APIC */ #define osnoise_arch_register() do {} while (0) #define osnoise_arch_unregister() do {} while (0) #endif /* CONFIG_X86_LOCAL_APIC */ This can be used by other archs as well... sound reasonable? -- Daniel >> +/** >> + * trace_intel_irq_entry - record intel specific IRQ entry >> + */ >> +void trace_intel_irq_entry(void *data, int vector) >> +{ >> + __trace_irq_entry(vector); >> +} >> +