Merge branch 'linus' into smp/urgent

Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.

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 000000000000..0509f55f07b4
--- /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