litmus-rt.git - The LITMUS^RT kernel.

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author	Steve French <sfrench@us.ibm.com>	2008-05-11 11:53:33 -0400
committer	Steve French <sfrench@us.ibm.com>	2008-05-11 13:45:44 -0400
commit	e691b9d1a096fbaaff9d6d6aef1adc593b786e62 (patch)
tree	a329a4d115315d4dd459d171c3c98b2bc8c4728b /scripts
parent	67750fb9e07940c078d1edb16fd736ccc92a4a4e (diff)

[CIFS] don't allow demultiplex thread to exit until kthread_stop is called

cifs_demultiplex_thread can exit under several conditions: 1) if it's signaled 2) if there's a problem with session setup 3) if kthread_stop is called on it The first two are problems. If kthread_stop is called on the thread, there is no guarantee that it will still be up. We need to have the thread stay up until kthread_stop is called on it. One option would be to not even try to tear things down until after kthread_stop is called. However, in the case where there is a problem setting up the session, there's no real reason to try continuing the loop. This patch allows the thread to clean up and prepare for exit under all three conditions, but it has the thread go to sleep until kthread_stop is called. This allows us to simplify the shutdown code somewhat since we can be reasonably sure that the thread won't exit after being signaled but before kthread_stop is called. It also removes the places where the thread itself set the tsk variable since it appeared that it could have a potential race where the thread might never be shut down. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Steve French <sfrench@us.ibm.com>

Diffstat (limited to 'scripts')

0 files changed, 0 insertions, 0 deletions

/* nubus.h: various definitions and prototypes for NuBus drivers to use. Originally written by Alan Cox. Hacked to death by C. Scott Ananian and David Huggins-Daines. Some of the constants in here are from the corresponding NetBSD/OpenBSD header file, by Allen Briggs. We figured out the rest of them on our own. */ #ifndef LINUX_NUBUS_H #define LINUX_NUBUS_H #include <linux/types.h> #ifdef __KERNEL__ #include <asm/nubus.h> #endif enum nubus_category { NUBUS_CAT_BOARD = 0x0001, NUBUS_CAT_DISPLAY = 0x0003, NUBUS_CAT_NETWORK = 0x0004, NUBUS_CAT_COMMUNICATIONS = 0x0006, NUBUS_CAT_FONT = 0x0009, NUBUS_CAT_CPU = 0x000A, /* For lack of a better name */ NUBUS_CAT_DUODOCK = 0x0020 }; enum nubus_type_network { NUBUS_TYPE_ETHERNET = 0x0001, NUBUS_TYPE_RS232 = 0x0002 }; enum nubus_type_display { NUBUS_TYPE_VIDEO = 0x0001 }; enum nubus_type_cpu { NUBUS_TYPE_68020 = 0x0003, NUBUS_TYPE_68030 = 0x0004, NUBUS_TYPE_68040 = 0x0005 }; /* Known <Cat,Type,SW,HW> tuples: (according to TattleTech and Slots) * 68030 motherboards: <10,4,0,24> * 68040 motherboards: <10,5,0,24> * DuoDock Plus: <32,1,1,2> * * Toby Frame Buffer card: <3,1,1,1> * RBV built-in video (IIci): <3,1,1,24> * Valkyrie built-in video (Q630): <3,1,1,46> * Macintosh Display Card: <3,1,1,25> * Sonora built-in video (P460): <3,1,1,34> * Jet framebuffer (DuoDock Plus): <3,1,1,41> * * SONIC comm-slot/on-board and DuoDock Ethernet: <4,1,1,272> * SONIC LC-PDS Ethernet (Dayna, but like Apple 16-bit, sort of): <4,1,1,271> * Apple SONIC LC-PDS Ethernet ("Apple Ethernet LC Twisted-Pair Card"): <4,1,0,281> * Sonic Systems Ethernet A-Series Card: <4,1,268,256> * Asante MacCon NuBus-A: <4,1,260,256> (alpha-1.0,1.1 revision) * ROM on the above card: <2,1,0,0> * Cabletron ethernet card: <4,1,1,265> * Farallon ethernet card: <4,1,268,256> (identical to Sonic Systems card) * Kinetics EtherPort IIN: <4,1,259,262> * API Engineering EtherRun_LCa PDS enet card: <4,1,282,256> * * Add your devices to the list! You can obtain the "Slots" utility * from Apple's FTP site at: * ftp://dev.apple.com/devworld/Tool_Chest/Devices_-_Hardware/NuBus_Slot_Manager/ * * Alternately, TattleTech can be found at any Info-Mac mirror site. * or from its distribution site: ftp://ftp.decismkr.com/dms */ /* DrSW: Uniquely identifies the software interface to a board. This is usually the one you want to look at when writing a driver. It's not as useful as you think, though, because as we should know by now (duh), "Apple Compatible" can mean a lot of things... */ /* Add known DrSW values here */ enum nubus_drsw { /* NUBUS_CAT_DISPLAY */ NUBUS_DRSW_APPLE = 0x0001, NUBUS_DRSW_APPLE_HIRES = 0x0013, /* MacII HiRes card driver */ /* NUBUS_CAT_NETWORK */ NUBUS_DRSW_3COM = 0x0000, NUBUS_DRSW_CABLETRON = 0x0001, NUBUS_DRSW_SONIC_LC = 0x0001, NUBUS_DRSW_KINETICS = 0x0103, NUBUS_DRSW_ASANTE = 0x0104, NUBUS_DRSW_TECHWORKS = 0x0109, NUBUS_DRSW_DAYNA = 0x010b, NUBUS_DRSW_FARALLON = 0x010c, NUBUS_DRSW_APPLE_SN = 0x010f, NUBUS_DRSW_DAYNA2 = 0x0115, NUBUS_DRSW_FOCUS = 0x011a, NUBUS_DRSW_ASANTE_CS = 0x011d, /* use asante SMC9194 driver */ NUBUS_DRSW_DAYNA_LC = 0x011e, /* NUBUS_CAT_CPU */ NUBUS_DRSW_NONE = 0x0000, }; /* DrHW: Uniquely identifies the hardware interface to a board (or at least, it should... some video cards are known to incorrectly identify themselves as Toby cards) */ /* Add known DrHW values here */ enum nubus_drhw { /* NUBUS_CAT_DISPLAY */ NUBUS_DRHW_APPLE_TFB = 0x0001, /* Toby frame buffer card */ NUBUS_DRHW_APPLE_WVC = 0x0006, /* Apple Workstation Video Card */ NUBUS_DRHW_SIGMA_CLRMAX = 0x0007, /* Sigma Design ColorMax */ NUBUS_DRHW_APPLE_SE30 = 0x0009, /* Apple SE/30 video */ NUBUS_DRHW_APPLE_HRVC = 0x0013, /* Mac II High-Res Video Card */ NUBUS_DRHW_APPLE_PVC = 0x0017, /* Mac II Portrait Video Card */ NUBUS_DRHW_APPLE_RBV1 = 0x0018, /* IIci RBV video */ NUBUS_DRHW_APPLE_MDC = 0x0019, /* Macintosh Display Card */ NUBUS_DRHW_APPLE_SONORA = 0x0022, /* Sonora built-in video */ NUBUS_DRHW_APPLE_24AC = 0x002b, /* Mac 24AC Video Card */ NUBUS_DRHW_APPLE_VALKYRIE = 0x002e, NUBUS_DRHW_APPLE_JET = 0x0029, /* Jet framebuffer (DuoDock) */ NUBUS_DRHW_SMAC_GFX = 0x0105, /* SuperMac GFX */ NUBUS_DRHW_RASTER_CB264 = 0x013B, /* RasterOps ColorBoard 264 */ NUBUS_DRHW_MICRON_XCEED = 0x0146, /* Micron Exceed color */ NUBUS_DRHW_RDIUS_GSC = 0x0153, /* Radius GS/C */ NUBUS_DRHW_SMAC_SPEC8 = 0x017B, /* SuperMac Spectrum/8 */ NUBUS_DRHW_SMAC_SPEC24 = 0x017C, /* SuperMac Spectrum/24 */ NUBUS_DRHW_RASTER_CB364 = 0x026F, /* RasterOps ColorBoard 364 */ NUBUS_DRHW_RDIUS_DCGX = 0x027C, /* Radius DirectColor/GX */ NUBUS_DRHW_RDIUS_PC8 = 0x0291, /* Radius PrecisionColor 8 */ NUBUS_DRHW_LAPIS_PCS8 = 0x0292, /* Lapis ProColorServer 8 */ NUBUS_DRHW_RASTER_24XLI = 0x02A0, /* RasterOps 8/24 XLi */ NUBUS_DRHW_RASTER_PBPGT = 0x02A5, /* RasterOps PaintBoard Prism GT */ NUBUS_DRHW_EMACH_FSX = 0x02AE, /* E-Machines Futura SX */ NUBUS_DRHW_RASTER_24XLTV = 0x02B7, /* RasterOps 24XLTV */ NUBUS_DRHW_SMAC_THUND24 = 0x02CB, /* SuperMac Thunder/24 */ NUBUS_DRHW_SMAC_THUNDLGHT = 0x03D9, /* SuperMac ThunderLight */ NUBUS_DRHW_RDIUS_PC24XP = 0x0406, /* Radius PrecisionColor 24Xp */ NUBUS_DRHW_RDIUS_PC24X = 0x040A, /* Radius PrecisionColor 24X */ NUBUS_DRHW_RDIUS_PC8XJ = 0x040B, /* Radius PrecisionColor 8XJ */ /* NUBUS_CAT_NETWORK */ NUBUS_DRHW_INTERLAN = 0x0100, NUBUS_DRHW_SMC9194 = 0x0101, NUBUS_DRHW_KINETICS = 0x0106, NUBUS_DRHW_CABLETRON = 0x0109, NUBUS_DRHW_ASANTE_LC = 0x010f, NUBUS_DRHW_SONIC = 0x0110, NUBUS_DRHW_TECHWORKS = 0x0112, NUBUS_DRHW_APPLE_SONIC_NB = 0x0118, NUBUS_DRHW_APPLE_SONIC_LC = 0x0119, NUBUS_DRHW_FOCUS = 0x011c, NUBUS_DRHW_SONNET = 0x011d, }; /* Resource IDs: These are the identifiers for the various weird and wonderful tidbits of information that may or may not reside in the NuBus ROM directory. */ enum nubus_res_id { NUBUS_RESID_TYPE = 0x0001, NUBUS_RESID_NAME = 0x0002, NUBUS_RESID_ICON = 0x0003, NUBUS_RESID_DRVRDIR = 0x0004, NUBUS_RESID_LOADREC = 0x0005, NUBUS_RESID_BOOTREC = 0x0006, NUBUS_RESID_FLAGS = 0x0007, NUBUS_RESID_HWDEVID = 0x0008, NUBUS_RESID_MINOR_BASEOS = 0x000a, NUBUS_RESID_MINOR_LENGTH = 0x000b, NUBUS_RESID_MAJOR_BASEOS = 0x000c, NUBUS_RESID_MAJOR_LENGTH = 0x000d, NUBUS_RESID_CICN = 0x000f, NUBUS_RESID_ICL8 = 0x0010, NUBUS_RESID_ICL4 = 0x0011, }; /* Category-specific resources. */ enum nubus_board_res_id { NUBUS_RESID_BOARDID = 0x0020, NUBUS_RESID_PRAMINITDATA = 0x0021, NUBUS_RESID_PRIMARYINIT = 0x0022, NUBUS_RESID_TIMEOUTCONST = 0x0023, NUBUS_RESID_VENDORINFO = 0x0024, NUBUS_RESID_BOARDFLAGS = 0x0025, NUBUS_RESID_SECONDINIT = 0x0026, /* Not sure why Apple put these next two in here */ NUBUS_RESID_VIDNAMES = 0x0041, NUBUS_RESID_VIDMODES = 0x007e }; /* Fields within the vendor info directory */ enum nubus_vendor_res_id { NUBUS_RESID_VEND_ID = 0x0001, NUBUS_RESID_VEND_SERIAL = 0x0002, NUBUS_RESID_VEND_REV = 0x0003, NUBUS_RESID_VEND_PART = 0x0004, NUBUS_RESID_VEND_DATE = 0x0005 }; enum nubus_net_res_id { NUBUS_RESID_MAC_ADDRESS = 0x0080 }; enum nubus_cpu_res_id { NUBUS_RESID_MEMINFO = 0x0081, NUBUS_RESID_ROMINFO = 0x0082 }; enum nubus_display_res_id { NUBUS_RESID_GAMMADIR = 0x0040, NUBUS_RESID_FIRSTMODE = 0x0080, NUBUS_RESID_SECONDMODE = 0x0081, NUBUS_RESID_THIRDMODE = 0x0082, NUBUS_RESID_FOURTHMODE = 0x0083, NUBUS_RESID_FIFTHMODE = 0x0084, NUBUS_RESID_SIXTHMODE = 0x0085 }; struct nubus_dir { unsigned char *base; unsigned char *ptr; int done; int mask; }; struct nubus_dirent { unsigned char *base; unsigned char type; __u32 data; /* Actually 24bits used */ int mask; }; #ifdef __KERNEL__ struct nubus_board { struct nubus_board* next; struct nubus_dev* first_dev; /* Only 9-E actually exist, though 0-8 are also theoretically possible, and 0 is a special case which represents the motherboard and onboard peripherals (Ethernet, video) */ int slot; /* For slot 0, this is bogus. */ char name[64]; /* Format block */ unsigned char* fblock; /* Root directory (does *not* always equal fblock + doffset!) */ unsigned char* directory; unsigned long slot_addr; /* Offset to root directory (sometimes) */ unsigned long doffset; /* Length over which to compute the crc */ unsigned long rom_length; /* Completely useless most of the time */ unsigned long crc; unsigned char rev; unsigned char format; unsigned char lanes; }; struct nubus_dev { /* Next link in device list */ struct nubus_dev* next; /* Directory entry in /proc/bus/nubus */ struct proc_dir_entry* procdir; /* The functional resource ID of this device */ unsigned char resid; /* These are mostly here for convenience; we could always read them from the ROMs if we wanted to */ unsigned short category; unsigned short type; unsigned short dr_sw; unsigned short dr_hw; /* This is the device's name rather than the board's. Sometimes they are different. Usually the board name is more correct. */ char name[64]; /* MacOS driver (I kid you not) */ unsigned char* driver; /* Actually this is an offset */ unsigned long iobase; unsigned long iosize; unsigned char flags, hwdevid; /* Functional directory */ unsigned char* directory; /* Much of our info comes from here */ struct nubus_board* board; }; /* This is all NuBus devices (used to find devices later on) */ extern struct nubus_dev* nubus_devices; /* This is all NuBus cards */ extern struct nubus_board* nubus_boards; /* Generic NuBus interface functions, modelled after the PCI interface */ void nubus_scan_bus(void); extern void nubus_proc_init(void); int get_nubus_list(char *buf); int nubus_proc_attach_device(struct nubus_dev *dev); int nubus_proc_detach_device(struct nubus_dev *dev); /* If we need more precision we can add some more of these */ struct nubus_dev* nubus_find_device(unsigned short category, unsigned short type, unsigned short dr_hw, unsigned short dr_sw, const struct nubus_dev* from); struct nubus_dev* nubus_find_type(unsigned short category, unsigned short type, const struct nubus_dev* from); /* Might have more than one device in a slot, you know... */ struct nubus_dev* nubus_find_slot(unsigned int slot, const struct nubus_dev* from); /* These are somewhat more NuBus-specific. They all return 0 for success and -1 for failure, as you'd expect. */ /* The root directory which contains the board and functional directories */ int nubus_get_root_dir(const struct nubus_board* board, struct nubus_dir* dir); /* The board directory */ int nubus_get_board_dir(const struct nubus_board* board, struct nubus_dir* dir); /* The functional directory */ int nubus_get_func_dir(const struct nubus_dev* dev, struct nubus_dir* dir); /* These work on any directory gotten via the above */ int nubus_readdir(struct nubus_dir* dir, struct nubus_dirent* ent); int nubus_find_rsrc(struct nubus_dir* dir, unsigned char rsrc_type, struct nubus_dirent* ent); int nubus_rewinddir(struct nubus_dir* dir); /* Things to do with directory entries */ int nubus_get_subdir(const struct nubus_dirent* ent, struct nubus_dir* dir); void nubus_get_rsrc_mem(void* dest, const struct nubus_dirent *dirent, int len); void nubus_get_rsrc_str(void* dest, const struct nubus_dirent *dirent, int maxlen); #endif /* __KERNEL__ */ /* We'd like to get rid of this eventually. Only daynaport.c uses it now. */ static inline void *nubus_slot_addr(int slot) { return (void *)(0xF0000000|(slot<<24)); } #endif /* LINUX_NUBUS_H */


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