summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h144
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h b/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
new file mode 100644
index 000000000..0509f55f0
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h
@@ -0,0 +1,144 @@
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/**************************************************************************
+ *
+ * Copyright 2021 VMware, Inc., Palo Alto, CA., USA
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef _VMWGFX_MKSSTAT_H_
+#define _VMWGFX_MKSSTAT_H_
+
+#include <asm/page.h>
+
+/* Reservation marker for mksstat pid's */
+#define MKSSTAT_PID_RESERVED -1
+
+#if IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS)
+/*
+ * Kernel-internal mksGuestStat counters. The order of this enum dictates the
+ * order of instantiation of these counters in the mksGuestStat pages.
+ */
+
+typedef enum {
+ MKSSTAT_KERN_EXECBUF, /* vmw_execbuf_ioctl */
+
+ MKSSTAT_KERN_COUNT /* Reserved entry; always last */
+} mksstat_kern_stats_t;
+
+/**
+ * vmw_mksstat_get_kern_pstat: Computes the address of the MKSGuestStatCounterTime
+ * array from the address of the base page.
+ *
+ * @page_addr: Pointer to the base page.
+ * Return: Pointer to the MKSGuestStatCounterTime array.
+ */
+
+static inline void *vmw_mksstat_get_kern_pstat(void *page_addr)
+{
+ return page_addr + PAGE_SIZE * 1;
+}
+
+/**
+ * vmw_mksstat_get_kern_pinfo: Computes the address of the MKSGuestStatInfoEntry
+ * array from the address of the base page.
+ *
+ * @page_addr: Pointer to the base page.
+ * Return: Pointer to the MKSGuestStatInfoEntry array.
+ */
+
+static inline void *vmw_mksstat_get_kern_pinfo(void *page_addr)
+{
+ return page_addr + PAGE_SIZE * 2;
+}
+
+/**
+ * vmw_mksstat_get_kern_pstrs: Computes the address of the mksGuestStat strings
+ * sequence from the address of the base page.
+ *
+ * @page_addr: Pointer to the base page.
+ * Return: Pointer to the mksGuestStat strings sequence.
+ */
+
+static inline void *vmw_mksstat_get_kern_pstrs(void *page_addr)
+{
+ return page_addr + PAGE_SIZE * 3;
+}
+
+/*
+ * MKS_STAT_TIME_DECL/PUSH/POP macros to be used in timer-counted routines.
+ */
+
+struct mksstat_timer_t {
+/* mutable */ mksstat_kern_stats_t old_top;
+ const u64 t0;
+ const int slot;
+};
+
+#define MKS_STAT_TIME_DECL(kern_cntr) \
+ struct mksstat_timer_t _##kern_cntr = { \
+ .t0 = rdtsc(), \
+ .slot = vmw_mksstat_get_kern_slot(current->pid, dev_priv) \
+ }
+
+#define MKS_STAT_TIME_PUSH(kern_cntr) \
+ do { \
+ if (_##kern_cntr.slot >= 0) { \
+ _##kern_cntr.old_top = dev_priv->mksstat_kern_top_timer[_##kern_cntr.slot]; \
+ dev_priv->mksstat_kern_top_timer[_##kern_cntr.slot] = kern_cntr; \
+ } \
+ } while (0)
+
+#define MKS_STAT_TIME_POP(kern_cntr) \
+ do { \
+ if (_##kern_cntr.slot >= 0) { \
+ const pid_t pid = atomic_cmpxchg(&dev_priv->mksstat_kern_pids[_##kern_cntr.slot], current->pid, MKSSTAT_PID_RESERVED); \
+ dev_priv->mksstat_kern_top_timer[_##kern_cntr.slot] = _##kern_cntr.old_top; \
+ \
+ if (pid == current->pid) { \
+ const u64 dt = rdtsc() - _##kern_cntr.t0; \
+ MKSGuestStatCounterTime *pstat; \
+ \
+ BUG_ON(!dev_priv->mksstat_kern_pages[_##kern_cntr.slot]); \
+ \
+ pstat = vmw_mksstat_get_kern_pstat(page_address(dev_priv->mksstat_kern_pages[_##kern_cntr.slot])); \
+ \
+ atomic64_inc(&pstat[kern_cntr].counter.count); \
+ atomic64_add(dt, &pstat[kern_cntr].selfCycles); \
+ atomic64_add(dt, &pstat[kern_cntr].totalCycles); \
+ \
+ if (_##kern_cntr.old_top != MKSSTAT_KERN_COUNT) \
+ atomic64_sub(dt, &pstat[_##kern_cntr.old_top].selfCycles); \
+ \
+ atomic_set(&dev_priv->mksstat_kern_pids[_##kern_cntr.slot], current->pid); \
+ } \
+ } \
+ } while (0)
+
+#else
+#define MKS_STAT_TIME_DECL(kern_cntr)
+#define MKS_STAT_TIME_PUSH(kern_cntr)
+#define MKS_STAT_TIME_POP(kern_cntr)
+
+#endif /* IS_ENABLED(CONFIG_DRM_VMWGFX_MKSSTATS */
+
+#endif