From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- drivers/comedi/proc.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 drivers/comedi/proc.c (limited to 'drivers/comedi/proc.c') diff --git a/drivers/comedi/proc.c b/drivers/comedi/proc.c new file mode 100644 index 000000000..2e4496633 --- /dev/null +++ b/drivers/comedi/proc.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * /proc interface for comedi + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 1998 David A. Schleef + */ + +/* + * This is some serious bloatware. + * + * Taken from Dave A.'s PCL-711 driver, 'cuz I thought it + * was cool. + */ + +#include +#include "comedi_internal.h" +#include +#include + +static int comedi_read(struct seq_file *m, void *v) +{ + int i; + int devices_q = 0; + struct comedi_driver *driv; + + seq_printf(m, "comedi version " COMEDI_RELEASE "\nformat string: %s\n", + "\"%2d: %-20s %-20s %4d\", i, driver_name, board_name, n_subdevices"); + + for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) { + struct comedi_device *dev = comedi_dev_get_from_minor(i); + + if (!dev) + continue; + + down_read(&dev->attach_lock); + if (dev->attached) { + devices_q = 1; + seq_printf(m, "%2d: %-20s %-20s %4d\n", + i, dev->driver->driver_name, + dev->board_name, dev->n_subdevices); + } + up_read(&dev->attach_lock); + comedi_dev_put(dev); + } + if (!devices_q) + seq_puts(m, "no devices\n"); + + mutex_lock(&comedi_drivers_list_lock); + for (driv = comedi_drivers; driv; driv = driv->next) { + seq_printf(m, "%s:\n", driv->driver_name); + for (i = 0; i < driv->num_names; i++) + seq_printf(m, " %s\n", + *(char **)((char *)driv->board_name + + i * driv->offset)); + + if (!driv->num_names) + seq_printf(m, " %s\n", driv->driver_name); + } + mutex_unlock(&comedi_drivers_list_lock); + + return 0; +} + +void __init comedi_proc_init(void) +{ + if (!proc_create_single("comedi", 0444, NULL, comedi_read)) + pr_warn("comedi: unable to create proc entry\n"); +} + +void comedi_proc_cleanup(void) +{ + remove_proc_entry("comedi", NULL); +} -- cgit v1.3.1