diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_mksstat.h | 144 |
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 |