150 lines
4.7 KiB
Diff
150 lines
4.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Manisha Chinthapally <manisha.chinthapally@intel.com>
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Date: Wed, 30 Jan 2019 13:58:55 -0800
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Subject: [PATCH] Get profiling status info
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In remote or acrn based collections, it is necessary to know if all the samples generated is copied to the host.
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So, added an IOCTL to collect important statistical data like samples logged, dropped etc
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Tracked-On: PKT-1717
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Signed-off-by: Manisha Chinthapally <manisha.chinthapally@intel.com>
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---
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drivers/platform/x86/sepdk/inc/lwpmudrv.h | 6 ++
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drivers/platform/x86/sepdk/sep/lwpmudrv.c | 79 ++++++++++++++++++++++-
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2 files changed, 84 insertions(+), 1 deletion(-)
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mode change 100755 => 100644 drivers/platform/x86/sepdk/sep/lwpmudrv.c
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diff --git a/drivers/platform/x86/sepdk/inc/lwpmudrv.h b/drivers/platform/x86/sepdk/inc/lwpmudrv.h
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index ae8a3aee26a1..d682ab632127 100644
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--- a/drivers/platform/x86/sepdk/inc/lwpmudrv.h
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+++ b/drivers/platform/x86/sepdk/inc/lwpmudrv.h
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@@ -545,6 +545,12 @@ struct profiling_pcpuid {
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uint32_t ecx;
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uint32_t edx;
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};
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+
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+struct profiling_status {
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+ uint32_t samples_logged;
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+ uint32_t samples_dropped;
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+};
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+
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#endif
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#endif
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diff --git a/drivers/platform/x86/sepdk/sep/lwpmudrv.c b/drivers/platform/x86/sepdk/sep/lwpmudrv.c
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old mode 100755
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new mode 100644
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index be5310ef43b8..6f6772433cce
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--- a/drivers/platform/x86/sepdk/sep/lwpmudrv.c
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+++ b/drivers/platform/x86/sepdk/sep/lwpmudrv.c
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@@ -4235,6 +4235,7 @@ static OS_STATUS lwpmudrv_Prepare_Stop(void)
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#if !defined(DRV_SEP_ACRN_ON)
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CONTROL_Invoke_Parallel(lwpmudrv_Pause_Op, NULL);
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#else
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+
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control = (struct profiling_control *)CONTROL_Allocate_Memory(
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sizeof(struct profiling_control));
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if (control == NULL) {
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@@ -5944,6 +5945,77 @@ static OS_STATUS lwpmudrv_Control_Driver_Log(IOCTL_ARGS args)
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return OS_SUCCESS;
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}
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+/* ------------------------------------------------------------------------- */
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+/*!
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+ * @fn U64 lwpmudrv_Get_Sample_Drop_Info
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+ *
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+ * @brief Get the information of dropped samples
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+ *
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+ * @param arg Pointer to the IOCTL structure
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+ *
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+ * @return status
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+ *
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+ * <I>Special Notes:</I>
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+ * <NONE>
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+ */
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+static OS_STATUS lwpmudrv_Get_Sample_Drop_Info(IOCTL_ARGS args)
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+{
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+ U32 size;
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+ static SAMPLE_DROP_INFO_NODE req_sample_drop_info;
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+#if defined(DRV_SEP_ACRN_ON)
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+ U32 i;
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+ struct profiling_status *stats = NULL;
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+#endif
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+ size = 0;
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+ if (args->buf_drv_to_usr == NULL) {
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+ return OS_INVALID;
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+ }
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+ if (args->len_drv_to_usr != sizeof(SAMPLE_DROP_INFO_NODE)) {
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+ return OS_INVALID;
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+ }
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+
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+ memset((char *)&req_sample_drop_info, 0, sizeof(SAMPLE_DROP_INFO_NODE));
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+#if defined(DRV_SEP_ACRN_ON)
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+ stats = (struct profiling_status *)CONTROL_Allocate_Memory(
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+ GLOBAL_STATE_num_cpus(driver_state)*sizeof(struct profiling_status));
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+
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+ if (stats == NULL) {
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+ SEP_PRINT_ERROR("lwpmudrv_Start: Unable to allocate memory\n");
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+ return OS_NO_MEM;
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+ }
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+ memset(stats, 0, GLOBAL_STATE_num_cpus(driver_state)*
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+ sizeof(struct profiling_status));
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+
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+ acrn_hypercall2(HC_PROFILING_OPS, PROFILING_GET_STATUS,
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+ virt_to_phys(stats));
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+
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+ for (i = 0; i < GLOBAL_STATE_num_cpus(driver_state)
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+ && size < MAX_SAMPLE_DROP_NODES; i++) {
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+ if (stats[i].samples_logged || stats[i].samples_dropped) {
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+ SAMPLE_DROP_INFO_drop_info(
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+ &req_sample_drop_info, size).os_id = OS_ID_ACORN;
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+ SAMPLE_DROP_INFO_drop_info(
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+ &req_sample_drop_info, size).cpu_id = i;
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+ SAMPLE_DROP_INFO_drop_info(
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+ &req_sample_drop_info, size).sampled = stats[i].samples_logged;
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+ SAMPLE_DROP_INFO_drop_info(
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+ &req_sample_drop_info, size).dropped = stats[i].samples_dropped;
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+ size++;
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+ }
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+ }
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+
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+ stats = CONTROL_Free_Memory(stats);
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+#endif
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+ SAMPLE_DROP_INFO_size(&req_sample_drop_info) = size;
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+
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+ if (copy_to_user((void __user *)args->buf_drv_to_usr,
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+ &req_sample_drop_info, args->len_drv_to_usr)) {
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+ return OS_FAULT;
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+ }
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+
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+ return OS_SUCCESS;
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+}
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+
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/* ------------------------------------------------------------------------- */
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/*!
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* @fn U64 lwpmudrv_Get_Drv_Setup_Info
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@@ -6675,7 +6747,7 @@ static IOCTL_OP_TYPE lwpmu_Service_IOCTL(IOCTL_USE_INODE struct file *filp,
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break;
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case DRV_OPERATION_SET_OSID:
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- SEP_DRV_LOG_TRACE("LWPMUDRV_IOCTL_SET_OSID\n");
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+ SEP_DRV_LOG_TRACE("DRV_OPERATION_IOCTL_SET_OSID\n");
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status = lwpmudrv_Set_OSID(&local_args);
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break;
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@@ -6788,6 +6860,11 @@ static IOCTL_OP_TYPE lwpmu_Service_IOCTL(IOCTL_USE_INODE struct file *filp,
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status = lwpmudrv_Flush();
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break;
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+ case DRV_OPERATION_GET_SAMPLE_DROP_INFO:
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+ SEP_PRINT_DEBUG("DRV_OPERATION_IOCTL_GET_SAMPLE_DROP_INFO\n");
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+ status = lwpmudrv_Get_Sample_Drop_Info(&local_args);
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+ break;
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+
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case DRV_OPERATION_SET_EMON_BUFFER_DRIVER_HELPER:
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SEP_DRV_LOG_TRACE(
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"DRV_OPERATION_SET_EMON_BUFFER_DRIVER_HELPER.");
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--
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https://clearlinux.org
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