/* * IrNET protocol module : Synchronous PPP over an IrDA socket. * * Jean II - HPL `00 - * * This file contains all definitions and declarations necessary for the * PPP part of the IrNET module. * This file is a private header, so other modules don't want to know * what's in there... */ #ifndef IRNET_PPP_H #define IRNET_PPP_H /***************************** INCLUDES *****************************/ #include "irnet.h" /* Module global include */ #include /************************ CONSTANTS & MACROS ************************/ /* IrNET control channel stuff */ #define IRNET_MAX_COMMAND 256 /* Max length of a command line */ /* PPP hardcore stuff */ /* Bits in rbits (PPP flags in irnet struct) */ #define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP) /* Bit numbers in busy */ #define XMIT_BUSY 0 #define RECV_BUSY 1 #define XMIT_WAKEUP 2 #define XMIT_FULL 3 /* Queue management */ #define PPPSYNC_MAX_RQLEN 32 /* arbitrary */ /****************************** TYPES ******************************/ /**************************** PROTOTYPES ****************************/ /* ----------------------- CONTROL CHANNEL ----------------------- */ static inline ssize_t irnet_ctrl_write(irnet_socket *, const char *, size_t); static inline ssize_t irnet_ctrl_read(irnet_socket *, struct file *, char *, size_t); static inline unsigned int irnet_ctrl_poll(irnet_socket *, struct file *, poll_table *); /* ----------------------- CHARACTER DEVICE ----------------------- */ static int dev_irnet_open(struct inode *, /* fs callback : open */ struct file *), dev_irnet_close(struct inode *, struct file *); static ssize_t dev_irnet_write(struct file *, const char __user *, size_t, loff_t *), dev_irnet_read(struct file *, char __user *, size_t, loff_t *); static unsigned int dev_irnet_poll(struct file *, poll_table *); static long dev_irnet_ioctl(struct file *, unsigned int, unsigned long); /* ------------------------ PPP INTERFACE ------------------------ */ static inline struct sk_buff * irnet_prepare_skb(irnet_socket *, struct sk_buff *); static int ppp_irnet_send(struct ppp_channel *, struct sk_buff *); static int ppp_irnet_ioctl(struct ppp_channel *, unsigned int, unsigned long); /**************************** VARIABLES ****************************/ /* Filesystem callbacks (to call us) */ static const struct file_operations irnet_device_fops = { .owner = THIS_MODULE, .read = dev_irnet_read, .write = dev_irnet_write, .poll = dev_irnet_poll, .unlocked_ioctl = dev_irnet_ioctl, .open = dev_irnet_open, .release = dev_irnet_close, .llseek = noop_llseek, /* Also : llseek, readdir, mmap, flush, fsync, fasync, lock, readv, writev */ }; /* Structure so that the misc major (drivers/char/misc.c) take care of us... */ static struct miscdevice irnet_misc_device = { .minor = IRNET_MINOR, .name = "irnet", .fops = &irnet_device_fops }; #endif /* IRNET_PPP_H */ rivate-remove&id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>include/net/nexthop.h
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /include/net/nexthop.h
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/net/nexthop.h')