litmus-rt.git - The LITMUS^RT kernel.

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author	Ari Entlich <atrigent@ccs.neu.edu>	2010-02-19 09:37:55 -0500
committer	Greg Kroah-Hartman <gregkh@suse.de>	2010-03-02 17:43:23 -0500
commit	eec9fe7d1ab4a0dfac4cb43047a7657fffd0002f (patch)
tree	ba6b4a517aaacbfde6e5496d02f97e6c9b491c2e /tools/perf/scripts
parent	d9661adfb8e53a7647360140af3b92284cbe52d4 (diff)

tty: Add a new VT mode which is like VT_PROCESS but doesn't require a VT_RELDISP ioctl call

This new VT mode (VT_PROCESS_AUTO) does everything that VT_PROCESS does except that it doesn't wait for a VT_RELDISP ioctl before switching away from a VT with that mode. If the X server eventually uses this new mode, debugging and crash recovery should become easier. This is because even when currently in the VT of a frozen X server it would still be possible to switch out by doing SysRq-r and then CTRL-<number of a text vt>, sshing in and doing chvt <number of a text vt>, or any other method of VT switching. The general concensus on #xorg-devel seems to be that it should be safe to use this with X now that we have KMS. This also moves the VT_ACKACQ define to a more appropriate place, for clarity's sake. Signed-off-by: Ari Entlich <atrigent@ccs.neu.edu> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Diffstat (limited to 'tools/perf/scripts')

0 files changed, 0 insertions, 0 deletions

/* * mac80211 debugfs for wireless PHYs * * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * * GPLv2 * */ #include <linux/debugfs.h> #include <linux/rtnetlink.h> #include "ieee80211_i.h" #include "driver-ops.h" #include "rate.h" #include "debugfs.h" #define DEBUGFS_FORMAT_BUFFER_SIZE 100 int mac80211_format_buffer(char __user *userbuf, size_t count, loff_t *ppos, char *fmt, ...) { va_list args; char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; int res; va_start(args, fmt); res = vscnprintf(buf, sizeof(buf), fmt, args); va_end(args); return simple_read_from_buffer(userbuf, count, ppos, buf, res); } #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \ static ssize_t name## _read(struct file *file, char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ struct ieee80211_local *local = file->private_data; \ \ return mac80211_format_buffer(userbuf, count, ppos, \ fmt "\n", ##value); \ } #define DEBUGFS_READONLY_FILE_OPS(name) \ static const struct file_operations name## _ops = { \ .read = name## _read, \ .open = simple_open, \ .llseek = generic_file_llseek, \ }; #define DEBUGFS_READONLY_FILE(name, fmt, value...) \ DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ DEBUGFS_READONLY_FILE_OPS(name) #define DEBUGFS_ADD(name) \ debugfs_create_file(#name, 0400, phyd, local, &name## _ops); #define DEBUGFS_ADD_MODE(name, mode) \ debugfs_create_file(#name, mode, phyd, local, &name## _ops); DEBUGFS_READONLY_FILE(user_power, "%d", local->user_power_level); DEBUGFS_READONLY_FILE(power, "%d", local->hw.conf.power_level); DEBUGFS_READONLY_FILE(total_ps_buffered, "%d", local->total_ps_buffered); DEBUGFS_READONLY_FILE(wep_iv, "%#08x", local->wep_iv & 0xffffff); DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s", local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); #ifdef CONFIG_PM static ssize_t reset_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; rtnl_lock(); __ieee80211_suspend(&local->hw, NULL); __ieee80211_resume(&local->hw); rtnl_unlock(); return count; } static const struct file_operations reset_ops = { .write = reset_write, .open = simple_open, .llseek = noop_llseek, }; #endif static ssize_t hwflags_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; int mxln = 500; ssize_t rv; char *buf = kzalloc(mxln, GFP_KERNEL); int sf = 0; /* how many written so far */ if (!buf) return 0; sf += snprintf(buf, mxln - sf, "0x%x\n", local->hw.flags); if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) sf += snprintf(buf + sf, mxln - sf, "HAS_RATE_CONTROL\n"); if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) sf += snprintf(buf + sf, mxln - sf, "RX_INCLUDES_FCS\n"); if (local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) sf += snprintf(buf + sf, mxln - sf, "HOST_BCAST_PS_BUFFERING\n"); if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE) sf += snprintf(buf + sf, mxln - sf, "2GHZ_SHORT_SLOT_INCAPABLE\n"); if (local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE) sf += snprintf(buf + sf, mxln - sf, "2GHZ_SHORT_PREAMBLE_INCAPABLE\n"); if (local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC) sf += snprintf(buf + sf, mxln - sf, "SIGNAL_UNSPEC\n"); if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM) sf += snprintf(buf + sf, mxln - sf, "SIGNAL_DBM\n"); if (local->hw.flags & IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC) sf += snprintf(buf + sf, mxln - sf, "NEED_DTIM_BEFORE_ASSOC\n"); if (local->hw.flags & IEEE80211_HW_SPECTRUM_MGMT) sf += snprintf(buf + sf, mxln - sf, "SPECTRUM_MGMT\n"); if (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION) sf += snprintf(buf + sf, mxln - sf, "AMPDU_AGGREGATION\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_PS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PS\n"); if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) sf += snprintf(buf + sf, mxln - sf, "PS_NULLFUNC_STACK\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_PS\n"); if (local->hw.flags & IEEE80211_HW_MFP_CAPABLE) sf += snprintf(buf + sf, mxln - sf, "MFP_CAPABLE\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_STATIC_SMPS\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_DYNAMIC_SMPS\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_UAPSD\n"); if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) sf += snprintf(buf + sf, mxln - sf, "REPORTS_TX_ACK_STATUS\n"); if (local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) sf += snprintf(buf + sf, mxln - sf, "CONNECTION_MONITOR\n"); if (local->hw.flags & IEEE80211_HW_SUPPORTS_PER_STA_GTK) sf += snprintf(buf + sf, mxln - sf, "SUPPORTS_PER_STA_GTK\n"); if (local->hw.flags & IEEE80211_HW_AP_LINK_PS) sf += snprintf(buf + sf, mxln - sf, "AP_LINK_PS\n"); if (local->hw.flags & IEEE80211_HW_TX_AMPDU_SETUP_IN_HW) sf += snprintf(buf + sf, mxln - sf, "TX_AMPDU_SETUP_IN_HW\n"); rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); kfree(buf); return rv; } static ssize_t queues_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_local *local = file->private_data; unsigned long flags; char buf[IEEE80211_MAX_QUEUES * 20]; int q, res = 0; spin_lock_irqsave(&local->queue_stop_reason_lock, flags); for (q = 0; q < local->hw.queues; q++) res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, local->queue_stop_reasons[q], skb_queue_len(&local->pending[q])); spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); return simple_read_from_buffer(user_buf, count, ppos, buf, res); } DEBUGFS_READONLY_FILE_OPS(hwflags); DEBUGFS_READONLY_FILE_OPS(queues); /* statistics stuff */ static ssize_t format_devstat_counter(struct ieee80211_local *local, char __user *userbuf, size_t count, loff_t *ppos, int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, int buflen)) { struct ieee80211_low_level_stats stats; char buf[20]; int res; rtnl_lock(); res = drv_get_stats(local, &stats); rtnl_unlock(); if (res) return res; res = printvalue(&stats, buf, sizeof(buf)); return simple_read_from_buffer(userbuf, count, ppos, buf, res); } #define DEBUGFS_DEVSTATS_FILE(name) \ static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ char *buf, int buflen) \ { \ return scnprintf(buf, buflen, "%u\n", stats->name); \ } \ static ssize_t stats_ ##name## _read(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return format_devstat_counter(file->private_data, \ userbuf, \ count, \ ppos, \ print_devstats_##name); \ } \ \ static const struct file_operations stats_ ##name## _ops = { \ .read = stats_ ##name## _read, \ .open = simple_open, \ .llseek = generic_file_llseek, \ }; #define DEBUGFS_STATS_ADD(name, field) \ debugfs_create_u32(#name, 0400, statsd, (u32 *) &field); #define DEBUGFS_DEVSTATS_ADD(name) \ debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); void debugfs_hw_add(struct ieee80211_local *local) { struct dentry *phyd = local->hw.wiphy->debugfsdir; struct dentry *statsd; if (!phyd) return; local->debugfs.keys = debugfs_create_dir("keys", phyd); DEBUGFS_ADD(total_ps_buffered); DEBUGFS_ADD(wep_iv); DEBUGFS_ADD(queues); #ifdef CONFIG_PM DEBUGFS_ADD_MODE(reset, 0200); #endif DEBUGFS_ADD(hwflags); DEBUGFS_ADD(user_power); DEBUGFS_ADD(power); statsd = debugfs_create_dir("statistics", phyd); /* if the dir failed, don't put all the other things into the root! */ if (!statsd) return; DEBUGFS_STATS_ADD(transmitted_fragment_count, local->dot11TransmittedFragmentCount); DEBUGFS_STATS_ADD(multicast_transmitted_frame_count, local->dot11MulticastTransmittedFrameCount); DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount); DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount); DEBUGFS_STATS_ADD(multiple_retry_count, local->dot11MultipleRetryCount); DEBUGFS_STATS_ADD(frame_duplicate_count, local->dot11FrameDuplicateCount); DEBUGFS_STATS_ADD(received_fragment_count, local->dot11ReceivedFragmentCount); DEBUGFS_STATS_ADD(multicast_received_frame_count, local->dot11MulticastReceivedFrameCount); DEBUGFS_STATS_ADD(transmitted_frame_count, local->dot11TransmittedFrameCount); #ifdef CONFIG_MAC80211_DEBUG_COUNTERS DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop); DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued); DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted, local->tx_handlers_drop_unencrypted); DEBUGFS_STATS_ADD(tx_handlers_drop_fragment, local->tx_handlers_drop_fragment); DEBUGFS_STATS_ADD(tx_handlers_drop_wep, local->tx_handlers_drop_wep); DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc, local->tx_handlers_drop_not_assoc); DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port, local->tx_handlers_drop_unauth_port); DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop); DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued); DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc, local->rx_handlers_drop_nullfunc); DEBUGFS_STATS_ADD(rx_handlers_drop_defrag, local->rx_handlers_drop_defrag); DEBUGFS_STATS_ADD(rx_handlers_drop_short, local->rx_handlers_drop_short); DEBUGFS_STATS_ADD(tx_expand_skb_head, local->tx_expand_skb_head); DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned, local->tx_expand_skb_head_cloned); DEBUGFS_STATS_ADD(rx_expand_skb_head, local->rx_expand_skb_head); DEBUGFS_STATS_ADD(rx_expand_skb_head2, local->rx_expand_skb_head2); DEBUGFS_STATS_ADD(rx_handlers_fragments, local->rx_handlers_fragments); DEBUGFS_STATS_ADD(tx_status_drop, local->tx_status_drop); #endif DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); }


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