From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D8BC4CA5FCE for ; Mon, 5 Oct 2026 12:16:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1xDhWh-0006tg-SV; Mon, 05 Oct 2026 08:10:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xDhVP-000634-CH for qemu-devel@nongnu.org; Mon, 05 Oct 2026 08:09:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1xDhVL-0004j4-IY for qemu-devel@nongnu.org; Mon, 05 Oct 2026 08:09:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1791202154; 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=pUAN0iigguxmiyESqlZIKTQGLBoKjRijLiWC4VMtCJQ=; b=D/nYRQs4k5VlVUAKU6SppuXhSlnev1EVqb9mTuhfM8XXGDBhMAJWFMAL+iTnNMtm7lMG3U X6LFExLVgGsbM41x7Vc6pRLmqCjWjLTj6cTJlwQZJBjMWqOEvD3ZnmLFlxc4v5xqGhU9FF ZlDDqAIdYs7T3CXkw9akr/nJCdTLCn0= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-619-Oji09X0bPaeTRNPbi8GcZw-1; Mon, 05 Oct 2026 08:09:13 -0400 X-MC-Unique: Oji09X0bPaeTRNPbi8GcZw-1 X-Mimecast-MFC-AGG-ID: Oji09X0bPaeTRNPbi8GcZw_1791202152 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AB2581829E2A; Mon, 5 Oct 2026 12:09:12 +0000 (UTC) Received: from berrange.csb (headnet03.pony-001.prod.iad2.dc.redhat.com [10.2.32.114]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 40A213001D29; Mon, 5 Oct 2026 12:09:11 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Stefan Hajnoczi , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH v3 08/24] trace: drop 'id' from TraceEvent struct when not required Date: Mon, 5 Oct 2026 13:08:39 +0100 Message-ID: <20261005120855.421973-9-berrange@redhat.com> In-Reply-To: <20261005120855.421973-1-berrange@redhat.com> References: <20261005120855.421973-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.24, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Only "simpletrace" uses the "id" field from the TraceEvent struct. Omit it when this backend is not enabled to save memory. Reviewed-by: Marc-André Lureau Signed-off-by: Daniel P. Berrangé --- scripts/tracetool/format/c.py | 2 ++ tests/tracetool/dtrace.c | 4 ++++ tests/tracetool/ftrace.c | 4 ++++ tests/tracetool/log.c | 4 ++++ tests/tracetool/simple.c | 4 ++++ tests/tracetool/syslog.c | 4 ++++ tests/tracetool/ust.c | 4 ++++ trace/control-internal.h | 2 ++ trace/control.c | 4 +++- trace/control.h | 3 ++- trace/event-internal.h | 2 ++ 11 files changed, 35 insertions(+), 2 deletions(-) diff --git a/scripts/tracetool/format/c.py b/scripts/tracetool/format/c.py index 50e03313cbf..abe738ac423 100644 --- a/scripts/tracetool/format/c.py +++ b/scripts/tracetool/format/c.py @@ -34,7 +34,9 @@ def generate(events, backend, group): for e in events: out('TraceEvent %(event)s = {', + '#ifdef CONFIG_TRACE_SIMPLE', ' .id = 0,', + '#endif', ' .name = \"%(name)s\",', ' .sstate = %(sstate)s,', ' .dstate = &%(dstate)s', diff --git a/tests/tracetool/dtrace.c b/tests/tracetool/dtrace.c index 9f862fa14d2..05a93918240 100644 --- a/tests/tracetool/dtrace.c +++ b/tests/tracetool/dtrace.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/tests/tracetool/ftrace.c b/tests/tracetool/ftrace.c index 9f862fa14d2..05a93918240 100644 --- a/tests/tracetool/ftrace.c +++ b/tests/tracetool/ftrace.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/tests/tracetool/log.c b/tests/tracetool/log.c index 9f862fa14d2..05a93918240 100644 --- a/tests/tracetool/log.c +++ b/tests/tracetool/log.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/tests/tracetool/simple.c b/tests/tracetool/simple.c index 0484177481c..490d6f379a5 100644 --- a/tests/tracetool/simple.c +++ b/tests/tracetool/simple.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/tests/tracetool/syslog.c b/tests/tracetool/syslog.c index 9f862fa14d2..05a93918240 100644 --- a/tests/tracetool/syslog.c +++ b/tests/tracetool/syslog.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/tests/tracetool/ust.c b/tests/tracetool/ust.c index 9f862fa14d2..05a93918240 100644 --- a/tests/tracetool/ust.c +++ b/tests/tracetool/ust.c @@ -8,13 +8,17 @@ uint16_t _TRACE_TEST_BLAH_DSTATE; uint16_t _TRACE_TEST_WIBBLE_DSTATE; TraceEvent _TRACE_TEST_BLAH_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_blah", .sstate = TRACE_TEST_BLAH_ENABLED, .dstate = &_TRACE_TEST_BLAH_DSTATE }; TraceEvent _TRACE_TEST_WIBBLE_EVENT = { +#ifdef CONFIG_TRACE_SIMPLE .id = 0, +#endif .name = "test_wibble", .sstate = TRACE_TEST_WIBBLE_ENABLED, .dstate = &_TRACE_TEST_WIBBLE_DSTATE diff --git a/trace/control-internal.h b/trace/control-internal.h index 8d818d359be..f626b047264 100644 --- a/trace/control-internal.h +++ b/trace/control-internal.h @@ -19,11 +19,13 @@ static inline bool trace_event_is_pattern(const char *str) return strchr(str, '*') != NULL; } +#ifdef CONFIG_TRACE_SIMPLE static inline uint32_t trace_event_get_id(TraceEvent *ev) { assert(ev != NULL); return ev->id; } +#endif static inline const char * trace_event_get_name(TraceEvent *ev) { diff --git a/trace/control.c b/trace/control.c index 6971157cbe7..947b220056a 100644 --- a/trace/control.c +++ b/trace/control.c @@ -36,8 +36,8 @@ typedef struct TraceEventGroup { static TraceEventGroup *event_groups; static size_t nevent_groups; -static uint32_t next_id; #ifdef CONFIG_TRACE_SIMPLE +static uint32_t next_id; static bool init_trace_on_startup; #endif static char *trace_opts_file; @@ -65,10 +65,12 @@ QemuOptsList qemu_trace_opts = { void trace_event_register_group(TraceEvent **events) { +#ifdef CONFIG_TRACE_SIMPLE size_t i; for (i = 0; events[i] != NULL; i++) { events[i]->id = next_id++; } +#endif event_groups = g_renew(TraceEventGroup, event_groups, nevent_groups + 1); event_groups[nevent_groups].events = events; nevent_groups++; diff --git a/trace/control.h b/trace/control.h index 20033fb6669..e77c07a8e68 100644 --- a/trace/control.h +++ b/trace/control.h @@ -81,13 +81,14 @@ TraceEvent *trace_event_name(const char *name); */ static bool trace_event_is_pattern(const char *str); - +#ifdef CONFIG_TRACE_SIMPLE /** * trace_event_get_id: * * Get the identifier of an event. */ static uint32_t trace_event_get_id(TraceEvent *ev); +#endif /** * trace_event_get_name: diff --git a/trace/event-internal.h b/trace/event-internal.h index cc095a6ad54..ecf2caabd03 100644 --- a/trace/event-internal.h +++ b/trace/event-internal.h @@ -20,7 +20,9 @@ * Opaque generic description of a tracing event. */ typedef struct TraceEvent { +#ifdef CONFIG_TRACE_SIMPLE uint32_t id; +#endif const char * name; const bool sstate; uint16_t *dstate; -- 2.55.0