/* * Media Bus API header * * Copyright (C) 2009, Guennadi Liakhovetski * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __LINUX_V4L2_MEDIABUS_H #define __LINUX_V4L2_MEDIABUS_H #include #include #include /** * struct v4l2_mbus_framefmt - frame format on the media bus * @width: frame width * @height: frame height * @code: data format code (from enum v4l2_mbus_pixelcode) * @field: used interlacing type (from enum v4l2_field) * @colorspace: colorspace of the data (from enum v4l2_colorspace) * @ycbcr_enc: YCbCr encoding of the data (from enum v4l2_ycbcr_encoding) * @quantization: quantization of the data (from enum v4l2_quantization) * @xfer_func: transfer function of the data (from enum v4l2_xfer_func) */ struct v4l2_mbus_framefmt { __u32 width; __u32 height; __u32 code; __u32 field; __u32 colorspace; __u16 ycbcr_enc; __u16 quantization; __u16 xfer_func; __u16 reserved[11]; }; #ifndef __KERNEL__ /* * enum v4l2_mbus_pixelcode and its definitions are now deprecated, and * MEDIA_BUS_FMT_ definitions (defined in media-bus-format.h) should be * used instead. * * New defines should only be added to media-bus-format.h. The * v4l2_mbus_pixelcode enum is frozen. */ #define V4L2_MBUS_FROM_MEDIA_BUS_FMT(name) \ V4L2_MBUS_FMT_ ## name = MEDIA_BUS_FMT_ ## name enum v4l2_mbus_pixelcode { V4L2_MBUS_FROM_MEDIA_BUS_FMT(FIXED), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB444_2X8_PADHI_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB444_2X8_PADHI_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB555_2X8_PADHI_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB555_2X8_PADHI_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(BGR565_2X8_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(BGR565_2X8_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB565_2X8_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB565_2X8_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB666_1X18), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB888_1X24), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB888_2X12_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(RGB888_2X12_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(ARGB8888_1X32), V4L2_MBUS_FROM_MEDIA_BUS_FMT(Y8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UV8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY8_1_5X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY8_1_5X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV8_1_5X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU8_1_5X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY8_2X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY8_2X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV8_2X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU8_2X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(Y10_1X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY10_2X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY10_2X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV10_2X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU10_2X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(Y12_1X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY8_1X16), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY8_1X16), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV8_1X16), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU8_1X16), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YDYUYDYV8_1X16), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY10_1X20), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY10_1X20), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV10_1X20), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU10_1X20), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUV10_1X30), V4L2_MBUS_FROM_MEDIA_BUS_FMT(AYUV8_1X32), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY12_2X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY12_2X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV12_2X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU12_2X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(UYVY12_1X24), V4L2_MBUS_FROM_MEDIA_BUS_FMT(VYUY12_1X24), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YUYV12_1X24), V4L2_MBUS_FROM_MEDIA_BUS_FMT(YVYU12_1X24), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGBRG8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGRBG8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SRGGB8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_ALAW8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGBRG10_ALAW8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGRBG10_ALAW8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SRGGB10_ALAW8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_DPCM8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGBRG10_DPCM8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGRBG10_DPCM8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SRGGB10_DPCM8_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_2X8_PADHI_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_2X8_PADHI_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_2X8_PADLO_BE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_2X8_PADLO_LE), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR10_1X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGBRG10_1X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGRBG10_1X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SRGGB10_1X10), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SBGGR12_1X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGBRG12_1X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SGRBG12_1X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(SRGGB12_1X12), V4L2_MBUS_FROM_MEDIA_BUS_FMT(JPEG_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(S5C_UYVY_JPEG_1X8), V4L2_MBUS_FROM_MEDIA_BUS_FMT(AHSV8888_1X32), }; #endif /* __KERNEL__ */ #endif 3fd316b592'>patch) tree9582a827ce818aba63b5bb5f0f7a3d1e9f992cf9 /net/bridge/br_private.h parent63dfef75ed75364901d7caa52c6420cec3e73519 (diff)parent83a718d6294964fd1b227fa5f1ad001bc1fe7656 (diff)
Merge branch 'bridge-improve-cache-utilization'
Nikolay Aleksandrov says: ==================== bridge: improve cache utilization This is the first set which begins to deal with the bad bridge cache access patterns. The first patch rearranges the bridge and port structs a little so the frequently (and closely) accessed members are in the same cache line. The second patch then moves the garbage collection to a workqueue trying to improve system responsiveness under load (many fdbs) and more importantly removes the need to check if the matched entry is expired in __br_fdb_get which was a major source of false-sharing. The third patch is a preparation for the final one which If properly configured, i.e. ports bound to CPUs (thus updating "updated" locally) then the bridge's HitM goes from 100% to 0%, but even without binding we get a win because previously every lookup that iterated over the hash chain caused false-sharing due to the first cache line being used for both mac/vid and used/updated fields. Some results from tests I've run: (note that these were run in good conditions for the baseline, everything ran on a single NUMA node and there were only 3 fdbs) 1. baseline 100% Load HitM on the fdbs (between everyone who has done lookups and hit one of the 3 hash chains of the communicating src/dst fdbs) Overall 5.06% Load HitM for the bridge, first place in the list 2. patched & ports bound to CPUs 0% Local load HitM, bridge is not even in the c2c report list Also there's 3% consistent improvement in netperf tests. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_private.h')
-rw-r--r--net/bridge/br_private.h57
1 files changed, 28 insertions, 29 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h