/* * Copyright (C) 2015 - 2016 ZTE Corporation. * * 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 __DT_BINDINGS_CLOCK_ZX296718_H #define __DT_BINDINGS_CLOCK_ZX296718_H /* PLL */ #define ZX296718_PLL_CPU 1 #define ZX296718_PLL_MAC 2 #define ZX296718_PLL_MM0 3 #define ZX296718_PLL_MM1 4 #define ZX296718_PLL_VGA 5 #define ZX296718_PLL_DDR 6 #define ZX296718_PLL_AUDIO 7 #define ZX296718_PLL_HSIC 8 #define CPU_DBG_GATE 9 #define A72_GATE 10 #define CPU_PERI_GATE 11 #define A53_GATE 12 #define DDR1_GATE 13 #define DDR0_GATE 14 #define SD1_WCLK 15 #define SD1_AHB 16 #define SD0_WCLK 17 #define SD0_AHB 18 #define EMMC_WCLK 19 #define EMMC_NAND_AXI 20 #define NAND_WCLK 21 #define EMMC_NAND_AHB 22 #define LSP1_148M5 23 #define LSP1_99M 24 #define LSP1_24M 25 #define LSP0_74M25 26 #define LSP0_32K 27 #define LSP0_148M5 28 #define LSP0_99M 29 #define LSP0_24M 30 #define DEMUX_AXI 31 #define DEMUX_APB 32 #define DEMUX_148M5 33 #define DEMUX_108M 34 #define AUDIO_APB 35 #define AUDIO_99M 36 #define AUDIO_24M 37 #define AUDIO_16M384 38 #define AUDIO_32K 39 #define WDT_WCLK 40 #define TIMER_WCLK 41 #define VDE_ACLK 42 #define VCE_ACLK 43 #define HDE_ACLK 44 #define GPU_ACLK 45 #define SAPPU_ACLK 46 #define SAPPU_WCLK 47 #define VOU_ACLK 48 #define VOU_MAIN_WCLK 49 #define VOU_AUX_WCLK 50 #define VOU_PPU_WCLK 51 #define MIPI_CFG_CLK 52 #define VGA_I2C_WCLK 53 #define MIPI_REF_CLK 54 #define HDMI_OSC_CEC 55 #define HDMI_OSC_CLK 56 #define HDMI_XCLK 57 #define VIU_M0_ACLK 58 #define VIU_M1_ACLK 59 #define VIU_WCLK 60 #define VIU_JPEG_WCLK 61 #define VIU_CFG_CLK 62 #define TS_SYS_WCLK 63 #define TS_SYS_108M 64 #define USB20_HCLK 65 #define USB20_PHY_CLK 66 #define USB21_HCLK 67 #define USB21_PHY_CLK 68 #define GMAC_RMIICLK 69 #define GMAC_PCLK 70 #define GMAC_ACLK 71 #define GMAC_RFCLK 72 #define TEMPSENSOR_GATE 73 #define TOP_NR_CLKS 74 #define LSP0_TIMER3_PCLK 1 #define LSP0_TIMER3_WCLK 2 #define LSP0_TIMER4_PCLK 3 #define LSP0_TIMER4_WCLK 4 #define LSP0_TIMER5_PCLK 5 #define LSP0_TIMER5_WCLK 6 #define LSP0_UART3_PCLK 7 #define LSP0_UART3_WCLK 8 #define LSP0_UART1_PCLK 9 #define LSP0_UART1_WCLK 10 #define LSP0_UART2_PCLK 11 #define LSP0_UART2_WCLK 12 #define LSP0_SPIFC0_PCLK 13 #define LSP0_SPIFC0_WCLK 14 #define LSP0_I2C4_PCLK 15 #define LSP0_I2C4_WCLK 16 #define LSP0_I2C5_PCLK 17 #define LSP0_I2C5_WCLK 18 #define LSP0_SSP0_PCLK 19 #define LSP0_SSP0_WCLK 20 #define LSP0_SSP1_PCLK 21 #define LSP0_SSP1_WCLK 22 #define LSP0_USIM_PCLK 23 #define LSP0_USIM_WCLK 24 #define LSP0_GPIO_PCLK 25 #define LSP0_GPIO_WCLK 26 #define LSP0_I2C3_PCLK 27 #define LSP0_I2C3_WCLK 28 #define LSP0_NR_CLKS 29 #define LSP1_UART4_PCLK 1 #define LSP1_UART4_WCLK 2 #define LSP1_UART5_PCLK 3 #define LSP1_UART5_WCLK 4 #define LSP1_PWM_PCLK 5 #define LSP1_PWM_WCLK 6 #define LSP1_I2C2_PCLK 7 #define LSP1_I2C2_WCLK 8 #define LSP1_SSP2_PCLK 9 #define LSP1_SSP2_WCLK 10 #define LSP1_SSP3_PCLK 11 #define LSP1_SSP3_WCLK 12 #define LSP1_SSP4_PCLK 13 #define LSP1_SSP4_WCLK 14 #define LSP1_USIM1_PCLK 15 #define LSP1_USIM1_WCLK 16 #define LSP1_NR_CLKS 17 #define AUDIO_I2S0_WCLK 1 #define AUDIO_I2S0_PCLK 2 #define AUDIO_I2S1_WCLK 3 #define AUDIO_I2S1_PCLK 4 #define AUDIO_I2S2_WCLK 5 #define AUDIO_I2S2_PCLK 6 #define AUDIO_I2S3_WCLK 7 #define AUDIO_I2S3_PCLK 8 #define AUDIO_I2C0_WCLK 9 #define AUDIO_I2C0_PCLK 10 #define AUDIO_SPDIF0_WCLK 11 #define AUDIO_SPDIF0_PCLK 12 #define AUDIO_SPDIF1_WCLK 13 #define AUDIO_SPDIF1_PCLK 14 #define AUDIO_TIMER_WCLK 15 #define AUDIO_TIMER_PCLK 16 #define AUDIO_TDM_WCLK 17 #define AUDIO_TDM_PCLK 18 #define AUDIO_TS_PCLK 19 #define AUDIO_NR_CLKS 20 #endif on value='9'>9space:mode:
authorDouglas Miller <dougmill@linux.vnet.ibm.com>2017-01-28 06:42:20 -0600
committerTejun Heo <tj@kernel.org>2017-01-28 07:49:42 -0500
commit966d2b04e070bc040319aaebfec09e0144dc3341 (patch)
tree4b96156e3d1dd4dfd6039b7c219c9dc4616da52d /net/ieee802154/6lowpan/Makefile
parent1b1bc42c1692e9b62756323c675a44cb1a1f9dbd (diff)
percpu-refcount: fix reference leak during percpu-atomic transition
percpu_ref_tryget() and percpu_ref_tryget_live() should return "true" IFF they acquire a reference. But the return value from atomic_long_inc_not_zero() is a long and may have high bits set, e.g. PERCPU_COUNT_BIAS, and the return value of the tryget routines is bool so the reference may actually be acquired but the routines return "false" which results in a reference leak since the caller assumes it does not need to do a corresponding percpu_ref_put(). This was seen when performing CPU hotplug during I/O, as hangs in blk_mq_freeze_queue_wait where percpu_ref_kill (blk_mq_freeze_queue_start) raced with percpu_ref_tryget (blk_mq_timeout_work). Sample stack trace: __switch_to+0x2c0/0x450 __schedule+0x2f8/0x970 schedule+0x48/0xc0 blk_mq_freeze_queue_wait+0x94/0x120 blk_mq_queue_reinit_work+0xb8/0x180 blk_mq_queue_reinit_prepare+0x84/0xa0 cpuhp_invoke_callback+0x17c/0x600 cpuhp_up_callbacks+0x58/0x150 _cpu_up+0xf0/0x1c0 do_cpu_up+0x120/0x150 cpu_subsys_online+0x64/0xe0 device_online+0xb4/0x120 online_store+0xb4/0xc0 dev_attr_store+0x68/0xa0 sysfs_kf_write+0x80/0xb0 kernfs_fop_write+0x17c/0x250 __vfs_write+0x6c/0x1e0 vfs_write+0xd0/0x270 SyS_write+0x6c/0x110 system_call+0x38/0xe0 Examination of the queue showed a single reference (no PERCPU_COUNT_BIAS, and __PERCPU_REF_DEAD, __PERCPU_REF_ATOMIC set) and no requests. However, conditions at the time of the race are count of PERCPU_COUNT_BIAS + 0 and __PERCPU_REF_DEAD and __PERCPU_REF_ATOMIC set. The fix is to make the tryget routines use an actual boolean internally instead of the atomic long result truncated to a int. Fixes: e625305b3907 percpu-refcount: make percpu_ref based on longs instead of ints Link: https://bugzilla.kernel.org/show_bug.cgi?id=190751 Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com> Reviewed-by: Jens Axboe <axboe@fb.com> Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: e625305b3907 ("percpu-refcount: make percpu_ref based on longs instead of ints") Cc: stable@vger.kernel.org # v3.18+
Diffstat (limited to 'net/ieee802154/6lowpan/Makefile')