From patchwork Mon Nov 18 21:04:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 1196963 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="hXzLvZbv"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47H1hb0GSHz9sP4 for ; Tue, 19 Nov 2019 08:06:07 +1100 (AEDT) Received: from localhost ([::1]:39376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoDk-0000rC-S4 for incoming@patchwork.ozlabs.org; Mon, 18 Nov 2019 16:06:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33848) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoD6-0000Tt-8u for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:27 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iWoD2-0000Js-MO for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:24 -0500 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:59765 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iWoD2-0000JO-I3 for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574111120; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Yd8MYcLjqrhTn2OqLZGL+00LdrRLfQgAIwkktg4P2SE=; b=hXzLvZbvuCP5crqXvF6qam3kpXDb0o618e+WnESszhFoav3ZIOQbAzBSExN4yepLUAfGTQ 5WgliGdqNsLDEtW5erHHy2PFJeewsdIJ6qXBrnDgux25/4YjdB2G79tveeCYHqfTV5HyMS /X27Sn8ZEYio6SR8yyvToX5M6Gc7Rq4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-195-I5k73bWwOBqqw3QuK-gqmA-1; Mon, 18 Nov 2019 16:05:18 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 28C421005502; Mon, 18 Nov 2019 21:05:17 +0000 (UTC) Received: from x1w.redhat.com (unknown [10.40.206.9]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3567C643E4; Mon, 18 Nov 2019 21:05:12 +0000 (UTC) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: Eric Blake , qemu-devel@nongnu.org Subject: [PATCH-for-4.2 v3 1/3] hw/block/pflash: Remove dynamic field width from trace events Date: Mon, 18 Nov 2019 22:04:56 +0100 Message-Id: <20191118210458.11959-2-philmd@redhat.com> In-Reply-To: <20191118210458.11959-1-philmd@redhat.com> References: <20191118210458.11959-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: I5k73bWwOBqqw3QuK-gqmA-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Stefan Hajnoczi , qemu-block@nongnu.org, qemu-trivial@nongnu.org, Max Reitz , Aleksandar Markovic , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aurelien Jarno Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Since not all trace backends support dynamic field width in format (dtrace via stap does not), replace by a static field width instead. We previously passed to the trace API 'width << 1' as the number of hex characters to display (the dynamic field width). We don't need this anymore. Instead, display the size of bytes accessed. Reported-by: Eric Blake Buglink: https://bugs.launchpad.net/qemu/+bug/1844817 Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Eric Blake --- v3: display size (in byte) hw/block/pflash_cfi01.c | 8 ++++---- hw/block/pflash_cfi02.c | 8 ++++---- hw/block/trace-events | 8 ++++---- 3 files changed, 12 insertions(+), 12 deletions(-) diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index 566c0acb77..54e6ebd385 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -276,7 +276,7 @@ static uint32_t pflash_data_read(PFlashCFI01 *pfl, hwaddr offset, DPRINTF("BUG in %s\n", __func__); abort(); } - trace_pflash_data_read(offset, width << 1, ret); + trace_pflash_data_read(offset, width, ret); return ret; } @@ -389,7 +389,7 @@ static uint32_t pflash_read(PFlashCFI01 *pfl, hwaddr offset, break; } - trace_pflash_io_read(offset, width, width << 1, ret, pfl->cmd, pfl->wcycle); + trace_pflash_io_read(offset, width, ret, pfl->cmd, pfl->wcycle); return ret; } @@ -414,7 +414,7 @@ static inline void pflash_data_write(PFlashCFI01 *pfl, hwaddr offset, { uint8_t *p = pfl->storage; - trace_pflash_data_write(offset, width << 1, value, pfl->counter); + trace_pflash_data_write(offset, width, value, pfl->counter); switch (width) { case 1: p[offset] = value; @@ -453,7 +453,7 @@ static void pflash_write(PFlashCFI01 *pfl, hwaddr offset, cmd = value; - trace_pflash_io_write(offset, width, width << 1, value, pfl->wcycle); + trace_pflash_io_write(offset, width, value, pfl->wcycle); if (!pfl->wcycle) { /* Set the device in I/O access mode */ memory_region_rom_device_set_romd(&pfl->mem, false); diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c index 4baca701b7..c7d92c3e79 100644 --- a/hw/block/pflash_cfi02.c +++ b/hw/block/pflash_cfi02.c @@ -260,7 +260,7 @@ static uint64_t pflash_data_read(PFlashCFI02 *pfl, hwaddr offset, { uint8_t *p = (uint8_t *)pfl->storage + offset; uint64_t ret = pfl->be ? ldn_be_p(p, width) : ldn_le_p(p, width); - trace_pflash_data_read(offset, width << 1, ret); + trace_pflash_data_read(offset, width, ret); return ret; } @@ -385,7 +385,7 @@ static uint64_t pflash_read(void *opaque, hwaddr offset, unsigned int width) } break; } - trace_pflash_io_read(offset, width, width << 1, ret, pfl->cmd, pfl->wcycle); + trace_pflash_io_read(offset, width, ret, pfl->cmd, pfl->wcycle); return ret; } @@ -432,7 +432,7 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value, uint8_t *p; uint8_t cmd; - trace_pflash_io_write(offset, width, width << 1, value, pfl->wcycle); + trace_pflash_io_write(offset, width, value, pfl->wcycle); cmd = value; if (pfl->cmd != 0xA0) { /* Reset does nothing during chip erase and sector erase. */ @@ -542,7 +542,7 @@ static void pflash_write(void *opaque, hwaddr offset, uint64_t value, } goto reset_flash; } - trace_pflash_data_write(offset, width << 1, value, 0); + trace_pflash_data_write(offset, width, value, 0); if (!pfl->ro) { p = (uint8_t *)pfl->storage + offset; if (pfl->be) { diff --git a/hw/block/trace-events b/hw/block/trace-events index 13d1b21dd4..c03e80c2c9 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -8,10 +8,10 @@ fdc_ioport_write(uint8_t reg, uint8_t value) "write reg 0x%02x val 0x%02x" # pflash_cfi01.c pflash_reset(void) "reset" pflash_timer_expired(uint8_t cmd) "command 0x%02x done" -pflash_io_read(uint64_t offset, int width, int fmt_width, uint32_t value, uint8_t cmd, uint8_t wcycle) "offset:0x%04"PRIx64" width:%d value:0x%0*x cmd:0x%02x wcycle:%u" -pflash_io_write(uint64_t offset, int width, int fmt_width, uint32_t value, uint8_t wcycle) "offset:0x%04"PRIx64" width:%d value:0x%0*x wcycle:%u" -pflash_data_read(uint64_t offset, int width, uint32_t value) "data offset:0x%04"PRIx64" value:0x%0*x" -pflash_data_write(uint64_t offset, int width, uint32_t value, uint64_t counter) "data offset:0x%04"PRIx64" value:0x%0*x counter:0x%016"PRIx64 +pflash_io_read(uint64_t offset, unsigned size, uint32_t value, uint8_t cmd, uint8_t wcycle) "offset:0x%04"PRIx64" size:%u value:0x%04x cmd:0x%02x wcycle:%u" +pflash_io_write(uint64_t offset, unsigned size, uint32_t value, uint8_t wcycle) "offset:0x%04"PRIx64" size:%u value:0x%04x wcycle:%u" +pflash_data_read(uint64_t offset, unsigned size, uint32_t value) "data offset:0x%04"PRIx64" size:%u value:0x%04x" +pflash_data_write(uint64_t offset, unsigned size, uint32_t value, uint64_t counter) "data offset:0x%04"PRIx64" size:%u value:0x%04x counter:0x%016"PRIx64 pflash_manufacturer_id(uint16_t id) "Read Manufacturer ID: 0x%04x" pflash_device_id(uint16_t id) "Read Device ID: 0x%04x" pflash_device_info(uint64_t offset) "Read Device Information offset:0x%04"PRIx64 From patchwork Mon Nov 18 21:04:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 1196964 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="cbU672Ye"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47H1k30w0vz9sP4 for ; Tue, 19 Nov 2019 08:07:23 +1100 (AEDT) Received: from localhost ([::1]:39396 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoEy-0002x0-Vv for incoming@patchwork.ozlabs.org; Mon, 18 Nov 2019 16:07:21 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33920) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoDC-0000bp-3O for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iWoD8-0000MD-DB for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:29 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:32265 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iWoD8-0000M7-9U for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:05:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574111125; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Q8wlrYeo5L6HsNC+5R9w7Qdds9F4FGlVrIAoGgzM+rE=; b=cbU672YelgzxS8io6npwZ9ku5aroESDNJsGFn3JmcLygUZOeVIQoXKPlQsehBJ3TZkbj4w ptuPtngTSVuscfjK3bljrzS/KUcpqh+7ZXYbG18T4ASc0PobXWg9lACyhRT/NUezhE7OoK kkmyfRz9oRnz8XEFXgH2Qi/ENxSUwIg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-356-143R-O2HPFmStHMUhF-fFQ-1; Mon, 18 Nov 2019 16:05:22 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 58399801E5B; Mon, 18 Nov 2019 21:05:21 +0000 (UTC) Received: from x1w.redhat.com (unknown [10.40.206.9]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E7EDF646D5; Mon, 18 Nov 2019 21:05:17 +0000 (UTC) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: Eric Blake , qemu-devel@nongnu.org Subject: [PATCH-for-4.2 v3 2/3] hw/mips/gt64xxx: Remove dynamic field width from trace events Date: Mon, 18 Nov 2019 22:04:57 +0100 Message-Id: <20191118210458.11959-3-philmd@redhat.com> In-Reply-To: <20191118210458.11959-1-philmd@redhat.com> References: <20191118210458.11959-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: 143R-O2HPFmStHMUhF-fFQ-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Stefan Hajnoczi , qemu-block@nongnu.org, qemu-trivial@nongnu.org, Max Reitz , Aleksandar Markovic , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aurelien Jarno Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Since not all trace backends support dynamic field width in format (dtrace via stap does not), replace by a static field width instead. We previously passed to the trace API 'width << 1' as the number of hex characters to display (the dynamic field width). We don't need this anymore. Instead, display the size of bytes accessed. Reported-by: Eric Blake Buglink: https://bugs.launchpad.net/qemu/+bug/1844817 Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Eric Blake --- v2: Do not update qemu_log_mask() v3: display size (in byte) --- hw/mips/gt64xxx_pci.c | 16 ++++++++-------- hw/mips/trace-events | 4 ++-- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/hw/mips/gt64xxx_pci.c b/hw/mips/gt64xxx_pci.c index 5cab9c1ee1..f1af840d8e 100644 --- a/hw/mips/gt64xxx_pci.c +++ b/hw/mips/gt64xxx_pci.c @@ -642,19 +642,19 @@ static void gt64120_writel(void *opaque, hwaddr addr, /* not really implemented */ s->regs[saddr] = ~(~(s->regs[saddr]) | ~(val & 0xfffffffe)); s->regs[saddr] |= !!(s->regs[saddr] & 0xfffffffe); - trace_gt64120_write("INTRCAUSE", size << 1, val); + trace_gt64120_write("INTRCAUSE", size, val); break; case GT_INTRMASK: s->regs[saddr] = val & 0x3c3ffffe; - trace_gt64120_write("INTRMASK", size << 1, val); + trace_gt64120_write("INTRMASK", size, val); break; case GT_PCI0_ICMASK: s->regs[saddr] = val & 0x03fffffe; - trace_gt64120_write("ICMASK", size << 1, val); + trace_gt64120_write("ICMASK", size, val); break; case GT_PCI0_SERR0MASK: s->regs[saddr] = val & 0x0000003f; - trace_gt64120_write("SERR0MASK", size << 1, val); + trace_gt64120_write("SERR0MASK", size, val); break; /* Reserved when only PCI_0 is configured. */ @@ -930,19 +930,19 @@ static uint64_t gt64120_readl(void *opaque, /* Interrupts */ case GT_INTRCAUSE: val = s->regs[saddr]; - trace_gt64120_read("INTRCAUSE", size << 1, val); + trace_gt64120_read("INTRCAUSE", size, val); break; case GT_INTRMASK: val = s->regs[saddr]; - trace_gt64120_read("INTRMASK", size << 1, val); + trace_gt64120_read("INTRMASK", size, val); break; case GT_PCI0_ICMASK: val = s->regs[saddr]; - trace_gt64120_read("ICMASK", size << 1, val); + trace_gt64120_read("ICMASK", size, val); break; case GT_PCI0_SERR0MASK: val = s->regs[saddr]; - trace_gt64120_read("SERR0MASK", size << 1, val); + trace_gt64120_read("SERR0MASK", size, val); break; /* Reserved when only PCI_0 is configured. */ diff --git a/hw/mips/trace-events b/hw/mips/trace-events index 75d4c73f2e..321933283f 100644 --- a/hw/mips/trace-events +++ b/hw/mips/trace-events @@ -1,4 +1,4 @@ # gt64xxx.c -gt64120_read(const char *regname, int width, uint64_t value) "gt64120 read %s value:0x%0*" PRIx64 -gt64120_write(const char *regname, int width, uint64_t value) "gt64120 write %s value:0x%0*" PRIx64 +gt64120_read(const char *regname, unsigned size, uint64_t value) "gt64120 read %s size:%u value:0x%08" PRIx64 +gt64120_write(const char *regname, unsigned size, uint64_t value) "gt64120 write %s size:%u value:0x%08" PRIx64 gt64120_isd_remap(uint64_t from_length, uint64_t from_addr, uint64_t to_length, uint64_t to_addr) "ISD: 0x%08" PRIx64 "@0x%08" PRIx64 " -> 0x%08" PRIx64 "@0x%08" PRIx64 From patchwork Mon Nov 18 21:04:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 1196965 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="OkzQ0Ipi"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 47H1lT0vlhz9sPT for ; Tue, 19 Nov 2019 08:08:36 +1100 (AEDT) Received: from localhost ([::1]:39408 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoGA-00047E-Rq for incoming@patchwork.ozlabs.org; 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bh=qM1nb36WuoLn5iPpv5w4jChgKX8iZnVU50qCjKMKGUE=; b=OkzQ0IpitUwU7yjpmdh2Lm2W3BVpxTp2VDsDeNuwkIrRkrc8wtED3CfPIr88qJqUTkBO5I 3cjWgYj85iQ329aF3T+kd5l7m8YJmc4QNx7FfkZloOPkK0D7Cd2fF0dE/moH7lIhZXQepR qwpwTFOl+npNMvPfjC8hrqikM0UMNL4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-234-znd8cBw2N-KFvJlsNK483w-1; Mon, 18 Nov 2019 16:05:29 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BDDBA1802CEB; Mon, 18 Nov 2019 21:05:27 +0000 (UTC) Received: from x1w.redhat.com (unknown [10.40.206.9]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CAA7960BE2; Mon, 18 Nov 2019 21:05:21 +0000 (UTC) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: Eric Blake , qemu-devel@nongnu.org Subject: [PATCH-for-4.2 v3 3/3] trace: Forbid dynamic field width in event format Date: Mon, 18 Nov 2019 22:04:58 +0100 Message-Id: <20191118210458.11959-4-philmd@redhat.com> In-Reply-To: <20191118210458.11959-1-philmd@redhat.com> References: <20191118210458.11959-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: znd8cBw2N-KFvJlsNK483w-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Stefan Hajnoczi , qemu-block@nongnu.org, qemu-trivial@nongnu.org, Max Reitz , Aleksandar Markovic , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Aurelien Jarno Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Since not all trace backends support dynamic field width in format (dtrace via stap does not), forbid them. Add a check to refuse field width in new formats: $ make [...] GEN hw/block/trace.h Traceback (most recent call last): File "scripts/tracetool.py", line 152, in main(sys.argv) File "scripts/tracetool.py", line 143, in main events.extend(tracetool.read_events(fh, arg)) File "scripts/tracetool/__init__.py", line 371, in read_events event = Event.build(line) File "scripts/tracetool/__init__.py", line 285, in build raise ValueError("Event format must not contain field width '%*'") ValueError: Error at hw/block/trace-events:11: Event format must not contain field width '%*' Reported-by: Eric Blake Buglink: https://bugs.launchpad.net/qemu/+bug/1844817 Signed-off-by: Philippe Mathieu-Daudé --- v3: - use better regex provided by Eric, - instead of re.match(), use re.search() which takes unanchored regex, - added a comment in tracing.txt --- docs/devel/tracing.txt | 3 ++- scripts/tracetool/__init__.py | 3 +++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/docs/devel/tracing.txt b/docs/devel/tracing.txt index 8c0376fefa..6c01ce801e 100644 --- a/docs/devel/tracing.txt +++ b/docs/devel/tracing.txt @@ -113,7 +113,8 @@ Format strings should reflect the types defined in the trace event. Take special care to use PRId64 and PRIu64 for int64_t and uint64_t types, respectively. This ensures portability between 32- and 64-bit platforms. Format strings must not end with a newline character. It is the responsibility -of backends to adapt line ending for proper logging. +of backends to adapt line ending for proper logging. Format strings must not +use numeric field width dynamic precision (SystemTap does not support them). Each event declaration will start with the event name, then its arguments, finally a format string for pretty-printing. For example: diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py index 44c118bc2a..ec7fe9fa4a 100644 --- a/scripts/tracetool/__init__.py +++ b/scripts/tracetool/__init__.py @@ -206,6 +206,7 @@ class Event(object): "\s*" "(?:(?:(?P\".+),)?\s*(?P\".+))?" "\s*") + _DFWRE = re.compile(r"%[\d\.\- +#']*\*") # dynamic width precision _VALID_PROPS = set(["disable", "tcg", "tcg-trans", "tcg-exec", "vcpu"]) @@ -280,6 +281,8 @@ class Event(object): if fmt.endswith(r'\n"'): raise ValueError("Event format must not end with a newline " "character") + if Event._DFWRE.search(fmt): + raise ValueError("Event format must not contain field width '%*'") if len(fmt_trans) > 0: fmt = [fmt_trans, fmt]