SCSI & usb-storage: add try_rc_10_first flag

[~andy/linux] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ab84a01c8d68d6ec90465d958c7988786ae51be6..a92c5ebf373e2bf4bea68072b58fbc0471ad9c13 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -70,7 +70,6 @@ parameter is applicable:
        M68k    M68k architecture is enabled.
                        These options have more detailed description inside of
                        Documentation/m68k/kernel-options.txt.
        M68k    M68k architecture is enabled.
                        These options have more detailed description inside of
                        Documentation/m68k/kernel-options.txt.

-       MCA     MCA bus support is enabled.

        MDA     MDA console support is enabled.
        MIPS    MIPS architecture is enabled.
        MOUSE   Appropriate mouse support is enabled.
        MDA     MDA console support is enabled.
        MIPS    MIPS architecture is enabled.
        MOUSE   Appropriate mouse support is enabled.


@@ -110,6 +109,7 @@ parameter is applicable:
        USB     USB support is enabled.
        USBHID  USB Human Interface Device support is enabled.
        V4L     Video For Linux support is enabled.
        USB     USB support is enabled.
        USBHID  USB Human Interface Device support is enabled.
        V4L     Video For Linux support is enabled.

+       VMMIO   Driver for memory mapped virtio devices is enabled.

        VGA     The VGA console has been enabled.
        VT      Virtual terminal support is enabled.
        WDT     Watchdog support is enabled.
        VGA     The VGA console has been enabled.
        VT      Virtual terminal support is enabled.
        WDT     Watchdog support is enabled.


@@ -335,6 +335,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                          requirements as needed. This option
                                          does not override iommu=pt
 
                                          requirements as needed. This option
                                          does not override iommu=pt
 

+       amd_iommu_dump= [HW,X86-64]
+                       Enable AMD IOMMU driver option to dump the ACPI table
+                       for AMD IOMMU. With this option enabled, AMD IOMMU
+                       driver will print ACPI tables for AMD IOMMU during
+                       IOMMU initialization.
+

        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT
                        Format: <a>,<b>
        amijoy.map=     [HW,JOY] Amiga joystick support
                        Map of devices attached to JOY0DAT and JOY1DAT
                        Format: <a>,<b>


@@ -397,8 +403,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        atkbd.softrepeat= [HW]
                        Use software keyboard repeat
 
        atkbd.softrepeat= [HW]
                        Use software keyboard repeat
 

-       autotest        [IA-64]
-

        baycom_epp=     [HW,AX25]
                        Format: <io>,<mode>
 
        baycom_epp=     [HW,AX25]
                        Format: <io>,<mode>
 


@@ -508,6 +512,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        Also note the kernel might malfunction if you disable
                        some critical bits.
 
                        Also note the kernel might malfunction if you disable
                        some critical bits.
 

+       cma=nn[MG]      [ARM,KNL]
+                       Sets the size of kernel global memory area for contiguous
+                       memory allocations. For more information, see
+                       include/linux/dma-contiguous.h
+

        cmo_free_hint=  [PPC] Format: { yes | no }
                        Specify whether pages are marked as being inactive
                        when they are freed.  This is used in CMO environments
        cmo_free_hint=  [PPC] Format: { yes | no }
                        Specify whether pages are marked as being inactive
                        when they are freed.  This is used in CMO environments


@@ -515,6 +524,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        a hypervisor.
                        Default: yes
 
                        a hypervisor.
                        Default: yes
 

+       coherent_pool=nn[KMG]   [ARM,KNL]
+                       Sets the size of memory pool for coherent, atomic dma
+                       allocations if Contiguous Memory Allocator (CMA) is used.
+

        code_bytes      [X86] How many bytes of object code to print
                        in an oops report.
                        Range: 0 - 8192
        code_bytes      [X86] How many bytes of object code to print
                        in an oops report.
                        Range: 0 - 8192


@@ -610,7 +623,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        ddebug_query=   [KNL,DYNAMIC_DEBUG] Enable debug messages at early boot
                        time. See Documentation/dynamic-debug-howto.txt for
 
        ddebug_query=   [KNL,DYNAMIC_DEBUG] Enable debug messages at early boot
                        time. See Documentation/dynamic-debug-howto.txt for

-                       details.
+                       details.  Deprecated, see dyndbg.

 
        debug           [KNL] Enable kernel debugging (events log level).
 
 
        debug           [KNL] Enable kernel debugging (events log level).
 


@@ -730,6 +743,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        dscc4.setup=    [NET]
 
 
        dscc4.setup=    [NET]
 

+       dyndbg[="val"]          [KNL,DYNAMIC_DEBUG]
+       module.dyndbg[="val"]
+                       Enable debug messages at boot time.  See
+                       Documentation/dynamic-debug-howto.txt for details.
+

        earlycon=       [KNL] Output early console device and options.
                uart[8250],io,<addr>[,options]
                uart[8250],mmio,<addr>[,options]
        earlycon=       [KNL] Output early console device and options.
                uart[8250],io,<addr>[,options]
                uart[8250],mmio,<addr>[,options]


@@ -982,6 +1000,20 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        i8k.restricted  [HW] Allow controlling fans only if SYS_ADMIN
                        capability is set.
 
        i8k.restricted  [HW] Allow controlling fans only if SYS_ADMIN
                        capability is set.
 

+       i915.invert_brightness=
+                       [DRM] Invert the sense of the variable that is used to
+                       set the brightness of the panel backlight. Normally a
+                       brightness value of 0 indicates backlight switched off,
+                       and the maximum of the brightness value sets the backlight
+                       to maximum brightness. If this parameter is set to 0
+                       (default) and the machine requires it, or this parameter
+                       is set to 1, a brightness value of 0 sets the backlight
+                       to maximum brightness, and the maximum of the brightness
+                       value switches the backlight off.
+                       -1 -- never invert brightness
+                        0 -- machine default
+                        1 -- force brightness inversion
+

        icn=            [HW,ISDN]
                        Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]
 
        icn=            [HW,ISDN]
                        Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]
 


@@ -1425,8 +1457,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        devices can be requested on-demand with the
                        /dev/loop-control interface.
 
                        devices can be requested on-demand with the
                        /dev/loop-control interface.
 

-       mcatest=        [IA-64]
-

        mce             [X86-32] Machine Check Exception
 
        mce=option      [X86-64] See Documentation/x86/x86_64/boot-options.txt
        mce             [X86-32] Machine Check Exception
 
        mce=option      [X86-64] See Documentation/x86/x86_64/boot-options.txt


@@ -2161,6 +2191,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                on: Turn realloc on
                realloc         same as realloc=on
                noari           do not use PCIe ARI.
                                on: Turn realloc on
                realloc         same as realloc=on
                noari           do not use PCIe ARI.

+               pcie_scan_all   Scan all possible PCIe devices.  Otherwise we
+                               only look for one device below a PCIe downstream
+                               port.

 
        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
                        Management.
 
        pcie_aspm=      [PCIE] Forcibly enable or disable PCIe Active State Power
                        Management.


@@ -2454,6 +2487,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        resume=         [SWSUSP]
                        Specify the partition device for software suspend
 
        resume=         [SWSUSP]
                        Specify the partition device for software suspend

+                       Format:
+                       {/dev/<dev> | PARTUUID=<uuid> | <int>:<int> | <hex>}

 
        resume_offset=  [SWSUSP]
                        Specify the offset from the beginning of the partition
 
        resume_offset=  [SWSUSP]
                        Specify the offset from the beginning of the partition


@@ -2508,6 +2543,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
        sched_debug     [KNL] Enables verbose scheduler debug messages.
 
 
        sched_debug     [KNL] Enables verbose scheduler debug messages.
 

+       skew_tick=      [KNL] Offset the periodic timer tick per cpu to mitigate
+                       xtime_lock contention on larger systems, and/or RCU lock
+                       contention on all systems with CONFIG_MAXSMP set.
+                       Format: { "0" | "1" }
+                       0 -- disable. (may be 1 via CONFIG_CMDLINE="skew_tick=1"
+                       1 -- enable.
+                       Note: increases power consumption, thus should only be
+                       enabled if running jitter sensitive (HPC/RT) workloads.
+

        security=       [SECURITY] Choose a security module to enable at boot.
                        If this boot parameter is not specified, only the first
                        security module asking for security registration will be
        security=       [SECURITY] Choose a security module to enable at boot.
                        If this boot parameter is not specified, only the first
                        security module asking for security registration will be


@@ -2929,6 +2973,22 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
        video=          [FB] Frame buffer configuration
                        See Documentation/fb/modedb.txt.
 
        video=          [FB] Frame buffer configuration
                        See Documentation/fb/modedb.txt.
 

+       virtio_mmio.device=
+                       [VMMIO] Memory mapped virtio (platform) device.
+
+                               <size>@<baseaddr>:<irq>[:<id>]
+                       where:
+                               <size>     := size (can use standard suffixes
+                                               like K, M and G)
+                               <baseaddr> := physical base address
+                               <irq>      := interrupt number (as passed to
+                                               request_irq())
+                               <id>       := (optional) platform device id
+                       example:
+                               virtio_mmio.device=1K@0x100b0000:48:7
+
+                       Can be used multiple times for multiple devices.
+

        vga=            [BOOT,X86-32] Select a particular video mode
                        See Documentation/x86/boot.txt and
                        Documentation/svga.txt.
        vga=            [BOOT,X86-32] Select a particular video mode
                        See Documentation/x86/boot.txt and
                        Documentation/svga.txt.