/* * Linux WiMAX * Debugfs support * * * Copyright (C) 2005-2006 Intel Corporation * Inaky Perez-Gonzalez * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include #include #include "wimax-internal.h" #define D_SUBMODULE debugfs #include "debug-levels.h" #define __debugfs_register(prefix, name, parent) \ do { \ result = d_level_register_debugfs(prefix, name, parent); \ if (result < 0) \ goto error; \ } while (0) int wimax_debugfs_add(struct wimax_dev *wimax_dev) { int result; struct net_device *net_dev = wimax_dev->net_dev; struct device *dev = net_dev->dev.parent; struct dentry *dentry; char buf[128]; snprintf(buf, sizeof(buf), "wimax:%s", net_dev->name); dentry = debugfs_create_dir(buf, NULL); result = PTR_ERR(dentry); if (IS_ERR(dentry)) { if (result == -ENODEV) result = 0; /* No debugfs support */ else dev_err(dev, "Can't create debugfs dentry: %d\n", result); goto out; } wimax_dev->debugfs_dentry = dentry; __debugfs_register("wimax_dl_", debugfs, dentry); __debugfs_register("wimax_dl_", id_table, dentry); __debugfs_register("wimax_dl_", op_msg, dentry); __debugfs_register("wimax_dl_", op_reset, dentry); __debugfs_register("wimax_dl_", op_rfkill, dentry); __debugfs_register("wimax_dl_", op_state_get, dentry); __debugfs_register("wimax_dl_", stack, dentry); result = 0; out: return result; error: debugfs_remove_recursive(wimax_dev->debugfs_dentry); return result; } void wimax_debugfs_rm(struct wimax_dev *wimax_dev) { debugfs_remove_recursive(wimax_dev->debugfs_dentry); } p;id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>diff
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 09:37:34 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 21:47:58 +0100
commit0becc0ae5b42828785b589f686725ff5bc3b9b25 (patch)
treebe6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101 /tools/testing/selftests/mqueue
parent24c2503255d35c269b67162c397a1a1c1e02f6ce (diff)
x86/mce: Make timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'tools/testing/selftests/mqueue')