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d=google.com; s=20230601; t=1742268741; x=1742873541; darn=lists.infradead.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=ncdSM+lbXMb9xe65qVg6II6RWpGKh15ceN/q8SVr8Hw=; b=ZkR1cFh6NG1cdEXpgf2C75Ru7pop7XNDEimt0RbE0H9NwXd/qWTs7GO39OImdmXde+ xQRUICnNDNmkEg+PLBT1fjkgxSxYh4aA0sEa78WYK22FLziUgTMgF4FBgSOg8dwdf832 CD6trRjt63JpQ1GhyFdiLs46JtSEJu6kgpklyth2mxAn9NjakP3FNfrmL8vDBSrJ1fAS fBWH1xk08mj63BS4cWgtwtZjNKJIl6kCIaIOuroYQFvo+WAGSvJda2gobPwe261FRXh/ 9TM/QQ3Rz3CVVlOodeSOUREeVZAw39e6mpLkC1EACDaFMsC6QEUKPpghYKa8UQdj7GVt QiOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742268741; x=1742873541; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ncdSM+lbXMb9xe65qVg6II6RWpGKh15ceN/q8SVr8Hw=; b=IXg6swfXpsFEhtxtRXcP+FZuV2UY0/PaeQEkJOf7C6fmkey9edplrWuYq3PXHFPCQf 5TAou0Mp+R8mJvSw8P+ehnrBe5PCJ05++3EiUY55DAs4TcF050n208JCWv5/NIkMHYQ6 nbVGfW2YYd9f9D0SaEy+pUI604mO6ryU2rTtPkGkDJZKJuUwsklcJwBBITZfoOuX49aW A1ONlBu03bMZZKkhUJ4F2xwmJpyNCbxnH/vu+wY0f5sjg446AZUoOtdxYGxmvSGkGWpD 2i1TFxHZXfBCSRRDyQXLlEt1EPdXhxHznaXVZsgKb5aYQc37pXBkg4Hi9FE7hXprWygT wq6w== X-Forwarded-Encrypted: i=1; AJvYcCUJuQdRIo96vi0UFk7lCJiLO01qvCsaAiRHjkfUDuismvRcCZaqOBJPoScrzs7xECLcZIVPLCVDhhn3VQeAay4T@lists.infradead.org X-Gm-Message-State: AOJu0YwafljuFBN+6JSlCX1isPb9uQmt1KT/ofsjseFpjJM9WpE4XaBm xu5qGKARRQuysW4NoVRHCBfnh1+xhYWY5RopGlgu3p05n4oMkw2xdwpIX4EHHjaNjfhwYlyWdkE G+tz/8A== X-Google-Smtp-Source: AGHT+IFff6zTrm/qdBPCcW4VzBl/8HVEtmJ31hx7NBMcpMHrGakVqIIkkB68EE2nkLWCDeZliwqsntSQnLqE X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:ef29:15ce:a42a:b69f]) (user=irogers job=sendgmr) by 2002:a25:3d47:0:b0:e63:c603:37d2 with SMTP id 3f1490d57ef6-e63f65f7ddfmr17773276.7.1742268741220; Mon, 17 Mar 2025 20:32:21 -0700 (PDT) Date: Mon, 17 Mar 2025 20:31:48 -0700 In-Reply-To: <20250318033150.119174-1-irogers@google.com> Message-Id: <20250318033150.119174-12-irogers@google.com> Mime-Version: 1.0 References: <20250318033150.119174-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.rc1.451.g8f38331e32-goog Subject: [PATCH v6 11/13] perf syscalltbl: Mask off ABI type for MIPS system calls From: Ian Rogers To: Ian Rogers , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang , John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , guoren , Paul Walmsley , Palmer Dabbelt , Albert Ou , Charlie Jenkins , Bibo Mao , Huacai Chen , Catalin Marinas , Jiri Slaby , " =?utf-8?b?QmrDtnJuIFTDtnBlbA==?= " , Howard Chu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "linux-csky@vger.kernel.org" , linux-riscv@lists.infradead.org, Arnd Bergmann X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250317_203222_508074_9396B8D2 X-CRM114-Status: GOOD ( 11.98 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Arnd Bergmann described that MIPS system calls don't necessarily start from 0 as an ABI prefix is applied: https://lore.kernel.org/lkml/8ed7dfb2-1e4d-4aa4-a04b-0397a89365d1@app.fastmail.com/ When decoding the "id" (aka system call number) for MIPS ignore values greater-than 1000. Signed-off-by: Ian Rogers --- tools/perf/util/syscalltbl.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c index 4e6018e2e0b3..67a8ec10e9e4 100644 --- a/tools/perf/util/syscalltbl.c +++ b/tools/perf/util/syscalltbl.c @@ -46,6 +46,14 @@ const char *syscalltbl__name(int e_machine, int id) { const struct syscalltbl *table = find_table(e_machine); + if (e_machine == EM_MIPS && id > 1000) { + /* + * MIPS may encode the N32/64/O32 type in the high part of + * syscall number. Mask this off if present. See the values of + * __NR_N32_Linux, __NR_64_Linux, __NR_O32_Linux and __NR_Linux. + */ + id = id % 1000; + } if (table && id >= 0 && id < table->num_to_name_len) return table->num_to_name[id]; return NULL;