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x-tls=pass version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128 X-Remote-Delivered-To: driverdev-devel@osuosl.org x-originating-ip: 107.180.71.197 From: kys@exchange.microsoft.com To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com, leann.ogasawara@canonical.com, marcelo.cerri@canonical.com, sthemmin@microsoft.com Subject: [PATCH V2 12/12] hv_balloon: trace post_status Date: Sun, 4 Mar 2018 22:17:22 -0700 Message-Id: <20180305051722.19157-12-kys@exchange.microsoft.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180305051722.19157-1-kys@exchange.microsoft.com> References: <20180305051539.19079-1-kys@exchange.microsoft.com> <20180305051722.19157-1-kys@exchange.microsoft.com> X-CMAE-Envelope: MS4wfIlrs04KbsvJwBOada1kGsbtPgPRQJ9ul0P3tzLaVZW0c/mQWcoGq6l2eqkmi3yyh3PMiRTZvIQgE1y8KbT3tcbFtaLqcGw/M5HFBjHywGCsiUibZjvV K32h7Mi6ywTc0g7HHxjUR+lQE2Jq8lheV+QG7pT9NTd4fq1qgHr9seUiojyimL5JEodd6lzxpP1/FkmUhVSXCyzw95JUSLgNujx2KOXrS0PfhgZU/TfFb9iS P32Yo3u9m3O0lHmnNtZmuC6KisvAHuagY3hHIZLOvIoJzUmwmP9jB3+jCCrRQhUjgBx3dkVgKVqw45p7HrXxQ1isU+4/mLfrxHj3KVfuw4le9+vvDPt9GNSf WuU+ry8WiX9iBguCLAbaYic6UOT/WfvZpJjvIvp89WrQZxBL2ymNdS4or4U78ZT9ikGkbR/2f5DeM9pNtFJLF1WViLsTFsoYeHbyHsFR7AU0i+a/hJ+m4yCs oi5YEHa0NIxHfsk2Vi/5LdFNBnj2+I1OIpyrqsm9wlaKFe0+3jqTbJBkrMrMRva05WMafM4liSI9V2D7vR/hfMzMeaNB8FbGGgx93A== X-BeenThere: driverdev-devel@linuxdriverproject.org X-Mailman-Version: 2.1.24 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: kys@microsoft.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Vitaly Kuznetsov Hyper-V balloon driver makes non-trivial calculations to convert Linux's representation of free/used memory to what Hyper-V host expects to see. Add a tracepoint to see what's being sent and where the data comes from. Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan --- drivers/hv/Makefile | 1 + drivers/hv/hv_balloon.c | 6 ++++++ drivers/hv/hv_trace_balloon.h | 48 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 55 insertions(+) create mode 100644 drivers/hv/hv_trace_balloon.h diff --git a/drivers/hv/Makefile b/drivers/hv/Makefile index 14c22786b519..a1eec7177c2d 100644 --- a/drivers/hv/Makefile +++ b/drivers/hv/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_HYPERV_UTILS) += hv_utils.o obj-$(CONFIG_HYPERV_BALLOON) += hv_balloon.o CFLAGS_hv_trace.o = -I$(src) +CFLAGS_hv_balloon.o = -I$(src) hv_vmbus-y := vmbus_drv.o \ hv.o connection.o channel.o \ diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c index 7514a32d0de4..b3e9f13f8bc3 100644 --- a/drivers/hv/hv_balloon.c +++ b/drivers/hv/hv_balloon.c @@ -34,6 +34,9 @@ #include +#define CREATE_TRACE_POINTS +#include "hv_trace_balloon.h" + /* * We begin with definitions supporting the Dynamic Memory protocol * with the host. @@ -1159,6 +1162,9 @@ static void post_status(struct hv_dynmem_device *dm) dm->num_pages_added - dm->num_pages_onlined : 0) + compute_balloon_floor(); + trace_balloon_status(status.num_avail, status.num_committed, + vm_memory_committed(), dm->num_pages_ballooned, + dm->num_pages_added, dm->num_pages_onlined); /* * If our transaction ID is no longer current, just don't * send the status. This can happen if we were interrupted diff --git a/drivers/hv/hv_trace_balloon.h b/drivers/hv/hv_trace_balloon.h new file mode 100644 index 000000000000..93082888aec3 --- /dev/null +++ b/drivers/hv/hv_trace_balloon.h @@ -0,0 +1,48 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM hyperv + +#if !defined(_HV_TRACE_BALLOON_H) || defined(TRACE_HEADER_MULTI_READ) +#define _HV_TRACE_BALLOON_H + +#include + +TRACE_EVENT(balloon_status, + TP_PROTO(u64 available, u64 committed, + unsigned long vm_memory_committed, + unsigned long pages_ballooned, + unsigned long pages_added, + unsigned long pages_onlined), + TP_ARGS(available, committed, vm_memory_committed, + pages_ballooned, pages_added, pages_onlined), + TP_STRUCT__entry( + __field(u64, available) + __field(u64, committed) + __field(unsigned long, vm_memory_committed) + __field(unsigned long, pages_ballooned) + __field(unsigned long, pages_added) + __field(unsigned long, pages_onlined) + ), + TP_fast_assign( + __entry->available = available; + __entry->committed = committed; + __entry->vm_memory_committed = vm_memory_committed; + __entry->pages_ballooned = pages_ballooned; + __entry->pages_added = pages_added; + __entry->pages_onlined = pages_onlined; + ), + TP_printk("available %lld, committed %lld; vm_memory_committed %ld;" + " pages_ballooned %ld, pages_added %ld, pages_onlined %ld", + __entry->available, __entry->committed, + __entry->vm_memory_committed, __entry->pages_ballooned, + __entry->pages_added, __entry->pages_onlined + ) + ); + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE hv_trace_balloon +#endif /* _HV_TRACE_BALLOON_H */ + +/* This part must be outside protection */ +#include -- 2.15.1 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel