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[37.6.163.245]) by smtp.gmail.com with ESMTPSA id co6-20020a0560000a0600b0033af4df8e1esm1219957wrb.47.2024.01.29.08.10.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jan 2024 08:10:58 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: fd751abc-bec0-11ee-8a43-1f161083a0e0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1706544658; x=1707149458; darn=lists.xenproject.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=zPokHMZSaf9YJuvbqyZkKKACp6RuNQ4cINXS/c1TsXk=; b=b2/pc+pvgeoKT7LHfR1RryzKWJ7ZTnQ49AMoS5FrnDgePSUOvO/kwvkUVNZFZkdwDC t0RNPmPVpC0TtDxDf/5zmu9DYXnahSTEWhKoPkoSbslaLQVJD0Rj1zcxPIFEoLWKI7j8 h4gbLcJwO48yY3XKUXOXLdFGx/gL+eetOm6BXhiP6/nGW21eqx2u6BkDvP/b1ecgl2Lh AozLaXH/Y7DdMdaowcqgJ3+IZsR69s+VSIDPFDY+ePv+bJb06AmBODvS4mKydVCdG4VB ZvQddvD+VX3k/NzpMfT/FaZjw8xpUBD2yppQ5W6njVn0nODeSeQI4+tg2t7w0pCAOIVC NJBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706544658; x=1707149458; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zPokHMZSaf9YJuvbqyZkKKACp6RuNQ4cINXS/c1TsXk=; b=CLnB0v4rEuG19r2DEwq82WOaSkgHpG/QBhHAIyHJLyOE59WKaApAr7wNnmmX2OYHvq 2G3CGtJ7XX+XNYWPE6YlJmluZyVnxdN8PLwhj0LA0FUCGSCBS58kXV+Rjfei8CSeQisJ W9CvzZtpjzsUe0XiSzrJHZ8ECvFiMa/T7Q8uDE5sKqEC7Ww6xsnuRytbQT5cHZcztnQb y7Y8iZXt5xz7TdLK58ZnDwDWBPkVLwzGHMUMnpf5SI28d3MjIAlvTlOBkB1wVIvQQoZ0 KLtrWxiErd0gPbIDZdHjO3iM3NupnQHyWtMSbuna/TwE5Jy4Fc2yHlug9a35nymh3xwV 7teA== X-Gm-Message-State: AOJu0YwbhdB4Y/9k1ibCAMyLj9QyMdlHJVuR1lXgqZlz92qGz6yIkOXq slQRnW9FQc2bhbH+NMmp99g2XgW69yVCroX5/baaJbZTOCmdr+RGV0QkhKe5iS0= X-Google-Smtp-Source: AGHT+IH2u+X0jHxP0JLWVS3FK/D/Os2n9uQ6Ne/3EkPY/YogM8wr2ifOFRbEXd/GLM5pC/sG/O6R+Q== X-Received: by 2002:a05:600c:3547:b0:40e:f5d0:8517 with SMTP id i7-20020a05600c354700b0040ef5d08517mr3106234wmq.33.1706544658554; Mon, 29 Jan 2024 08:10:58 -0800 (PST) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-arm@nongnu.org, qemu-block@nongnu.org Cc: peter.maydell@linaro.org, =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?Alex?= =?utf-8?q?_Benn=C3=A9e?= , Stefano Stabellini , Anthony Perard , Paul Durrant , xen-devel@lists.xenproject.org Subject: [PATCH v3 4/6] hw/xen/xen-mapcache.c: convert DPRINTF to tracepoints Date: Mon, 29 Jan 2024 18:09:40 +0200 Message-Id: <2fbe1fbc59078e384761c932e97cfa4276a53d75.1706544115.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Tracing DPRINTFs to stderr might not be desired. A developer that relies on tracepoints should be able to opt-in to each tracepoint and rely on QEMU's log redirection, instead of stderr by default. This commit converts DPRINTFs in this file that are used for tracing into tracepoints. Signed-off-by: Manos Pitsidianakis Reviewed-by: Alex Bennée --- hw/xen/trace-events | 11 +++++++++ hw/xen/xen-mapcache.c | 54 +++++++++++++++++++------------------------ 2 files changed, 35 insertions(+), 30 deletions(-) diff --git a/hw/xen/trace-events b/hw/xen/trace-events index 67a6c41926..a65dc0e55f 100644 --- a/hw/xen/trace-events +++ b/hw/xen/trace-events @@ -60,3 +60,14 @@ cpu_ioreq_config_write(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, ui xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64 xen_remap_bucket(uint64_t index) "index 0x%"PRIx64 xen_map_cache_return(void* ptr) "%p" +xen_map_cache_init(uint64_t nr_buckets, uint64_t size) "nr_buckets = 0x%"PRIx64" size 0x%"PRIx64 +xen_replace_cache_entry_dummy(uint64_t old_phys_addr, uint64_t new_phys_addr) "Replacing a dummy mapcache entry for 0x%"PRIx64" with 0x%"PRIx64 +xen_invalidate_map_cache_entry_unlocked_not_found(void *p) "could not find %p" +xen_invalidate_map_cache_entry_unlocked_found(uint64_t addr, void *p) " 0x%"PRIx64" -> %p is present" +xen_invalidate_map_cache_entry_unlocked_miss(void *buffer) "Trying to unmap address %p that is not in the mapcache" +xen_replace_cache_entry_unlocked_could_not_update_entry(uint64_t old_phys_addr) "Unable to update a mapcache entry for 0x%"PRIx64 +xen_ram_addr_from_mapcache_not_found(void *p) "could not find %p" +xen_ram_addr_from_mapcache_found(uint64_t addr, void *p) " 0x%"PRIx64" -> %p is present" +xen_ram_addr_from_mapcache_not_in_cache(void *p) "Trying to find address %p that is not in the mapcache" +xen_replace_cache_entry_unlocked(uint64_t old_phys_addr) "Trying to update an entry for 0x%"PRIx64" that is not in the mapcache" +xen_invalidate_map_cache(uint64_t paddr_index, void *vaddr_req) "Locked DMA mapping while invalidating mapcache 0x%"PRIx64" -> %p is present" diff --git a/hw/xen/xen-mapcache.c b/hw/xen/xen-mapcache.c index f7d974677d..336c212376 100644 --- a/hw/xen/xen-mapcache.c +++ b/hw/xen/xen-mapcache.c @@ -22,16 +22,6 @@ #include "trace.h" -//#define MAPCACHE_DEBUG - -#ifdef MAPCACHE_DEBUG -# define DPRINTF(fmt, ...) do { \ - fprintf(stderr, "xen_mapcache: " fmt, ## __VA_ARGS__); \ -} while (0) -#else -# define DPRINTF(fmt, ...) do { } while (0) -#endif - #if HOST_LONG_BITS == 32 # define MCACHE_BUCKET_SHIFT 16 # define MCACHE_MAX_SIZE (1UL<<31) /* 2GB Cap */ @@ -145,8 +135,7 @@ void xen_map_cache_init(phys_offset_to_gaddr_t f, void *opaque) size = mapcache->nr_buckets * sizeof (MapCacheEntry); size = (size + XC_PAGE_SIZE - 1) & ~(XC_PAGE_SIZE - 1); - DPRINTF("%s, nr_buckets = %lx size %lu\n", __func__, - mapcache->nr_buckets, size); + trace_xen_map_cache_init(mapcache->nr_buckets, size); mapcache->entry = g_malloc0(size); } @@ -286,7 +275,9 @@ tryagain: test_bits(address_offset >> XC_PAGE_SHIFT, test_bit_size >> XC_PAGE_SHIFT, mapcache->last_entry->valid_mapping)) { - trace_xen_map_cache_return(mapcache->last_entry->vaddr_base + address_offset); + trace_xen_map_cache_return( + mapcache->last_entry->vaddr_base + address_offset + ); return mapcache->last_entry->vaddr_base + address_offset; } @@ -368,7 +359,9 @@ tryagain: QTAILQ_INSERT_HEAD(&mapcache->locked_entries, reventry, next); } - trace_xen_map_cache_return(mapcache->last_entry->vaddr_base + address_offset); + trace_xen_map_cache_return( + mapcache->last_entry->vaddr_base + address_offset + ); return mapcache->last_entry->vaddr_base + address_offset; } @@ -402,10 +395,10 @@ ram_addr_t xen_ram_addr_from_mapcache(void *ptr) } } if (!found) { - fprintf(stderr, "%s, could not find %p\n", __func__, ptr); + trace_xen_ram_addr_from_mapcache_not_found(ptr); QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) { - DPRINTF(" "HWADDR_FMT_plx" -> %p is present\n", reventry->paddr_index, - reventry->vaddr_req); + trace_xen_ram_addr_from_mapcache_found(reventry->paddr_index, + reventry->vaddr_req); } abort(); return 0; @@ -416,7 +409,7 @@ ram_addr_t xen_ram_addr_from_mapcache(void *ptr) entry = entry->next; } if (!entry) { - DPRINTF("Trying to find address %p that is not in the mapcache!\n", ptr); + trace_xen_ram_addr_from_mapcache_not_in_cache(ptr); raddr = 0; } else { raddr = (reventry->paddr_index << MCACHE_BUCKET_SHIFT) + @@ -443,9 +436,12 @@ static void xen_invalidate_map_cache_entry_unlocked(uint8_t *buffer) } } if (!found) { - DPRINTF("%s, could not find %p\n", __func__, buffer); + trace_xen_invalidate_map_cache_entry_unlocked_not_found(buffer); QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) { - DPRINTF(" "HWADDR_FMT_plx" -> %p is present\n", reventry->paddr_index, reventry->vaddr_req); + trace_xen_invalidate_map_cache_entry_unlocked_found( + reventry->paddr_index, + reventry->vaddr_req + ); } return; } @@ -463,7 +459,7 @@ static void xen_invalidate_map_cache_entry_unlocked(uint8_t *buffer) entry = entry->next; } if (!entry) { - DPRINTF("Trying to unmap address %p that is not in the mapcache!\n", buffer); + trace_xen_invalidate_map_cache_entry_unlocked_miss(buffer); return; } entry->lock--; @@ -502,9 +498,8 @@ void xen_invalidate_map_cache(void) if (!reventry->dma) { continue; } - fprintf(stderr, "Locked DMA mapping while invalidating mapcache!" - " "HWADDR_FMT_plx" -> %p is present\n", - reventry->paddr_index, reventry->vaddr_req); + trace_xen_invalidate_map_cache(reventry->paddr_index, + reventry->vaddr_req); } for (i = 0; i < mapcache->nr_buckets; i++) { @@ -562,24 +557,23 @@ static uint8_t *xen_replace_cache_entry_unlocked(hwaddr old_phys_addr, entry = entry->next; } if (!entry) { - DPRINTF("Trying to update an entry for "HWADDR_FMT_plx \ - "that is not in the mapcache!\n", old_phys_addr); + trace_xen_replace_cache_entry_unlocked(old_phys_addr); return NULL; } address_index = new_phys_addr >> MCACHE_BUCKET_SHIFT; address_offset = new_phys_addr & (MCACHE_BUCKET_SIZE - 1); - fprintf(stderr, "Replacing a dummy mapcache entry for "HWADDR_FMT_plx \ - " with "HWADDR_FMT_plx"\n", old_phys_addr, new_phys_addr); + trace_xen_replace_cache_entry_dummy(old_phys_addr, new_phys_addr); xen_remap_bucket(entry, entry->vaddr_base, cache_size, address_index, false); if (!test_bits(address_offset >> XC_PAGE_SHIFT, test_bit_size >> XC_PAGE_SHIFT, entry->valid_mapping)) { - DPRINTF("Unable to update a mapcache entry for "HWADDR_FMT_plx"!\n", - old_phys_addr); + trace_xen_replace_cache_entry_unlocked_could_not_update_entry( + old_phys_addr + ); return NULL; }