#include #include #include #include #include #include #include #include #include #include #include /* * This is allocated by cpu_suspend_init(), and used to store a pointer to * the 'struct sleep_stack_data' the contains a particular CPUs state. */ unsigned long *sleep_save_stash; /* * This hook is provided so that cpu_suspend code can restore HW * breakpoints as early as possible in the resume path, before reenabling * debug exceptions. Code cannot be run from a CPU PM notifier since by the * time the notifier runs debug exceptions might have been enabled already, * with HW breakpoints registers content still in an unknown state. */ static void (*hw_breakpoint_restore)(void *); void __init cpu_suspend_set_dbg_restorer(void (*hw_bp_restore)(void *)) { /* Prevent multiple restore hook initializations */ if (WARN_ON(hw_breakpoint_restore)) return; hw_breakpoint_restore = hw_bp_restore; } void notrace __cpu_suspend_exit(void) { /* * We are resuming from reset with the idmap active in TTBR0_EL1. * We must uninstall the idmap and restore the expected MMU * state before we can possibly return to userspace. */ cpu_uninstall_idmap(); /* * Restore per-cpu offset before any kernel * subsystem relying on it has a chance to run. */ set_my_cpu_offset(per_cpu_offset(smp_processor_id())); /* * Restore HW breakpoint registers to sane values * before debug exceptions are possibly reenabled * through local_dbg_restore. */ if (hw_breakpoint_restore) hw_breakpoint_restore(NULL); } /* * cpu_suspend * * arg: argument to pass to the finisher function * fn: finisher function pointer * */ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) { int ret = 0; unsigned long flags; struct sleep_stack_data state; /* * From this point debug exceptions are disabled to prevent * updates to mdscr register (saved and restored along with * general purpose registers) from kernel debuggers. */ local_dbg_save(flags); /* * Function graph tracer state gets incosistent when the kernel * calls functions that never return (aka suspend finishers) hence * disable graph tracing during their execution. */ pause_graph_tracing(); if (__cpu_suspend_enter(&state)) { /* Call the suspend finisher */ ret = fn(arg); /* * Never gets here, unless the suspend finisher fails. * Successful cpu_suspend() should return from cpu_resume(), * returning through this code path is considered an error * If the return value is set to 0 force ret = -EOPNOTSUPP * to make sure a proper error condition is propagated */ if (!ret) ret = -EOPNOTSUPP; } else { __cpu_suspend_exit(); } unpause_graph_tracing(); /* * Restore pstate flags. OS lock and mdscr have been already * restored, so from this point onwards, debugging is fully * renabled if it was enabled when core started shutdown. */ local_dbg_restore(flags); return ret; } static int __init cpu_suspend_init(void) { /* ctx_ptr is an array of physical addresses */ sleep_save_stash = kcalloc(mpidr_hash_size(), sizeof(*sleep_save_stash), GFP_KERNEL); if (WARN_ON(!sleep_save_stash)) return -ENOMEM; return 0; } early_initcall(cpu_suspend_init); ve'/>
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authorTobias Klauser <tklauser@distanz.ch>2016-10-20 15:44:19 +0200
committerTobias Klauser <tklauser@distanz.ch>2017-02-15 10:34:18 +0100
commit5db4992d8f040b8d8db0b86d42806e0c417f7ccf (patch)
tree5b06e952af482d45f3ade64e77824662e34b7fa2 /arch/alpha/include/uapi/asm/termios.h
parent370ebb0ef6255132373ed35d13e7b1d8d2eb7003 (diff)
usbnet: pegasus: Use net_device_stats from struct net_devicends-private-remove
Instead of using a private copy of struct net_device_stats in struct pegasus, use stats from struct net_device. Also remove the now unnecessary .ndo_get_stats function. Cc: Petko Manolov <petkan@nucleusys.com> Cc: linux-usb@vger.kernel.org Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'arch/alpha/include/uapi/asm/termios.h')