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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /drivers/usb/dwc2/debug.h | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'drivers/usb/dwc2/debug.h')
| -rw-r--r-- | drivers/usb/dwc2/debug.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/debug.h b/drivers/usb/dwc2/debug.h new file mode 100644 index 000000000..47252c56d --- /dev/null +++ b/drivers/usb/dwc2/debug.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * debug.h - Designware USB2 DRD controller debug header + * + * Copyright (C) 2015 Intel Corporation + * Mian Yousaf Kaukab <yousaf.kaukab@intel.com> + */ + +#include "core.h" + +#ifdef CONFIG_DEBUG_FS +int dwc2_debugfs_init(struct dwc2_hsotg *hsotg); +void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg); +#else +static inline int dwc2_debugfs_init(struct dwc2_hsotg *hsotg) +{ return 0; } +static inline void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg) +{ } +#endif |