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Merge "adbd: reduce queue depths." into qt-dev

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am: 7eeed22871

Change-Id: I83c6590a8c3693200bb37a77edd8782fb77d414c
This commit is contained in:
Josh Gao 2019-05-20 17:43:30 -07:00 • committed by android-build-merger
commit b28857eee6
1 changed files with 4 additions and 2 deletions
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6
adb/daemon/usb.cpp
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@ -58,10 +58,12 @@ using android::base::StringPrintf;
static std::optional<bool> gFfsAioSupported;
// Not all USB controllers support operations larger than 16k, so don't go above that.
static constexpr size_t kUsbReadQueueDepth = 32;
// Also, each submitted operation does an allocation in the kernel of that size, so we want to
// minimize our queue depth while still maintaining a deep enough queue to keep the USB stack fed.
static constexpr size_t kUsbReadQueueDepth = 8;
static constexpr size_t kUsbReadSize = 4 * PAGE_SIZE;
static constexpr size_t kUsbWriteQueueDepth = 32;
static constexpr size_t kUsbWriteQueueDepth = 8;
static constexpr size_t kUsbWriteSize = 4 * PAGE_SIZE;
static const char* to_string(enum usb_functionfs_event_type type) {