#ifndef _UAPICCISS_IOCTLH #define _UAPICCISS_IOCTLH #include #include #include #define CCISS_IOC_MAGIC 'B' typedef struct _cciss_pci_info_struct { unsigned char bus; unsigned char dev_fn; unsigned short domain; __u32 board_id; } cciss_pci_info_struct; typedef struct _cciss_coalint_struct { __u32 delay; __u32 count; } cciss_coalint_struct; typedef char NodeName_type[16]; typedef __u32 Heartbeat_type; #define CISS_PARSCSIU2 0x0001 #define CISS_PARCSCIU3 0x0002 #define CISS_FIBRE1G 0x0100 #define CISS_FIBRE2G 0x0200 typedef __u32 BusTypes_type; typedef char FirmwareVer_type[4]; typedef __u32 DriverVer_type; #define MAX_KMALLOC_SIZE 128000 typedef struct _IOCTL_Command_struct { LUNAddr_struct LUN_info; RequestBlock_struct Request; ErrorInfo_struct error_info; WORD buf_size; /* size in bytes of the buf */ BYTE __user *buf; } IOCTL_Command_struct; typedef struct _BIG_IOCTL_Command_struct { LUNAddr_struct LUN_info; RequestBlock_struct Request; ErrorInfo_struct error_info; DWORD malloc_size; /* < MAX_KMALLOC_SIZE in cciss.c */ DWORD buf_size; /* size in bytes of the buf */ /* < malloc_size * MAXSGENTRIES */ BYTE __user *buf; } BIG_IOCTL_Command_struct; typedef struct _LogvolInfo_struct{ __u32 LunID; int num_opens; /* number of opens on the logical volume */ int num_parts; /* number of partitions configured on logvol */ } LogvolInfo_struct; #define CCISS_GETPCIINFO _IOR(CCISS_IOC_MAGIC, 1, cciss_pci_info_struct) #define CCISS_GETINTINFO _IOR(CCISS_IOC_MAGIC, 2, cciss_coalint_struct) #define CCISS_SETINTINFO _IOW(CCISS_IOC_MAGIC, 3, cciss_coalint_struct) #define CCISS_GETNODENAME _IOR(CCISS_IOC_MAGIC, 4, NodeName_type) #define CCISS_SETNODENAME _IOW(CCISS_IOC_MAGIC, 5, NodeName_type) #define CCISS_GETHEARTBEAT _IOR(CCISS_IOC_MAGIC, 6, Heartbeat_type) #define CCISS_GETBUSTYPES _IOR(CCISS_IOC_MAGIC, 7, BusTypes_type) #define CCISS_GETFIRMVER _IOR(CCISS_IOC_MAGIC, 8, FirmwareVer_type) #define CCISS_GETDRIVVER _IOR(CCISS_IOC_MAGIC, 9, DriverVer_type) #define CCISS_REVALIDVOLS _IO(CCISS_IOC_MAGIC, 10) #define CCISS_PASSTHRU _IOWR(CCISS_IOC_MAGIC, 11, IOCTL_Command_struct) #define CCISS_DEREGDISK _IO(CCISS_IOC_MAGIC, 12) /* no longer used... use REGNEWD instead */ #define CCISS_REGNEWDISK _IOW(CCISS_IOC_MAGIC, 13, int) #define CCISS_REGNEWD _IO(CCISS_IOC_MAGIC, 14) #define CCISS_RESCANDISK _IO(CCISS_IOC_MAGIC, 16) #define CCISS_GETLUNINFO _IOR(CCISS_IOC_MAGIC, 17, LogvolInfo_struct) #define CCISS_BIG_PASSTHRU _IOWR(CCISS_IOC_MAGIC, 18, BIG_IOCTL_Command_struct) #endif /* _UAPICCISS_IOCTLH */ ype='search' size='10' name='q' value=''/>
path: root/kernel/padata.c
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /kernel/padata.c
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/padata.c')