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Thu, 27 Apr 2023 11:25:15 -0400 X-MC-Unique: ytLdEjv6OBOWTc8NAer0iA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8D6A629DD992; Thu, 27 Apr 2023 15:23:27 +0000 (UTC) Received: from secure.mitica (unknown [10.39.193.238]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9DB2A40C2064; Thu, 27 Apr 2023 15:23:22 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Eric Blake , Juan Quintela , Peter Xu , John Snow , Yanan Wang , Stefan Hajnoczi , Leonardo Bras , Fam Zheng , Eduardo Habkost , Vladimir Sementsov-Ogievskiy , Paolo Bonzini , Richard Henderson Subject: [PULL 16/18] stat64: Add stat64_set() operation Date: Thu, 27 Apr 2023 17:22:32 +0200 Message-Id: <20230427152234.25400-17-quintela@redhat.com> In-Reply-To: <20230427152234.25400-1-quintela@redhat.com> References: <20230427152234.25400-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.129.124; envelope-from=quintela@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=-0.171, 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_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Paolo Bonzini Signed-off-by: Paolo Bonzini Reviewed-by: Juan Quintela Reviewed-by: Richard Henderson Signed-off-by: Juan Quintela --- include/qemu/stats64.h | 6 ++++++ util/stats64.c | 11 +++++++++++ 2 files changed, 17 insertions(+) diff --git a/include/qemu/stats64.h b/include/qemu/stats64.h index 802402254b..99b5cb724a 100644 --- a/include/qemu/stats64.h +++ b/include/qemu/stats64.h @@ -40,6 +40,11 @@ static inline uint64_t stat64_get(const Stat64 *s) return qatomic_read__nocheck(&s->value); } +static inline void stat64_set(Stat64 *s, uint64_t value) +{ + qatomic_set__nocheck(&s->value, value); +} + static inline void stat64_add(Stat64 *s, uint64_t value) { qatomic_add(&s->value, value); @@ -62,6 +67,7 @@ static inline void stat64_max(Stat64 *s, uint64_t value) } #else uint64_t stat64_get(const Stat64 *s); +void stat64_set(Stat64 *s, uint64_t value); bool stat64_min_slow(Stat64 *s, uint64_t value); bool stat64_max_slow(Stat64 *s, uint64_t value); bool stat64_add32_carry(Stat64 *s, uint32_t low, uint32_t high); diff --git a/util/stats64.c b/util/stats64.c index 897613c949..09736014ec 100644 --- a/util/stats64.c +++ b/util/stats64.c @@ -57,6 +57,17 @@ uint64_t stat64_get(const Stat64 *s) return ((uint64_t)high << 32) | low; } +void stat64_set(Stat64 *s, uint64_t val) +{ + while (!stat64_wrtrylock(s)) { + cpu_relax(); + } + + qatomic_set(&s->high, val >> 32); + qatomic_set(&s->low, val); + stat64_wrunlock(s); +} + bool stat64_add32_carry(Stat64 *s, uint32_t low, uint32_t high) { uint32_t old;