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6df3973b61
Signed-off-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org> Reviewed-by: Ryan Neph <ryanneph@google.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13255>
97 lines
2.1 KiB
C
97 lines
2.1 KiB
C
/*
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: MIT
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*
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* based in part on anv and radv which are:
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* Copyright © 2015 Intel Corporation
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* Copyright © 2016 Red Hat.
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* Copyright © 2016 Bas Nieuwenhuizen
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*/
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#include "vn_common.h"
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#include <stdarg.h>
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#include "util/debug.h"
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#include "util/log.h"
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#include "util/os_misc.h"
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#include "vk_enum_to_str.h"
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static const struct debug_control vn_debug_options[] = {
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{ "init", VN_DEBUG_INIT },
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{ "result", VN_DEBUG_RESULT },
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{ "vtest", VN_DEBUG_VTEST },
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{ "wsi", VN_DEBUG_WSI },
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{ NULL, 0 },
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};
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uint64_t vn_debug;
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static void
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vn_debug_init_once(void)
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{
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vn_debug = parse_debug_string(os_get_option("VN_DEBUG"), vn_debug_options);
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}
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void
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vn_debug_init(void)
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{
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static once_flag once = ONCE_FLAG_INIT;
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call_once(&once, vn_debug_init_once);
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}
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void
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vn_trace_init(void)
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{
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#ifdef ANDROID
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atrace_init();
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#endif
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}
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void
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vn_log(struct vn_instance *instance, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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mesa_log_v(MESA_LOG_DEBUG, "MESA-VIRTIO", format, ap);
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va_end(ap);
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/* instance may be NULL or partially initialized */
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}
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VkResult
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vn_log_result(struct vn_instance *instance,
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VkResult result,
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const char *where)
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{
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vn_log(instance, "%s: %s", where, vk_Result_to_str(result));
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return result;
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}
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void
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vn_relax(uint32_t *iter, const char *reason)
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{
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/* Yield for the first 2^busy_wait_order times and then sleep for
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* base_sleep_us microseconds for the same number of times. After that,
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* keep doubling both sleep length and count.
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*/
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const uint32_t busy_wait_order = 4;
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const uint32_t base_sleep_us = 10;
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const uint32_t warn_order = 12;
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(*iter)++;
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if (*iter < (1 << busy_wait_order)) {
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thrd_yield();
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return;
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}
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/* warn occasionally if we have slept at least 1.28ms for 2048 times (plus
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* another 2047 shorter sleeps)
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*/
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if (unlikely(*iter % (1 << warn_order) == 0))
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vn_log(NULL, "stuck in %s wait with iter at %d", reason, *iter);
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const uint32_t shift = util_last_bit(*iter) - busy_wait_order - 1;
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os_time_sleep(base_sleep_us << shift);
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}
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