/* * Copyright (C) 2010 Felix Fietkau * * 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. */ #ifndef __RC_MINSTREL_HT_H #define __RC_MINSTREL_HT_H /* * The number of streams can be changed to 2 to reduce code * size and memory footprint. */ #define MINSTREL_MAX_STREAMS 3 #define MINSTREL_HT_STREAM_GROUPS 4 /* BW(=2) * SGI(=2) */ #ifdef CONFIG_MAC80211_RC_MINSTREL_VHT #define MINSTREL_VHT_STREAM_GROUPS 6 /* BW(=3) * SGI(=2) */ #else #define MINSTREL_VHT_STREAM_GROUPS 0 #endif #define MINSTREL_HT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ MINSTREL_HT_STREAM_GROUPS) #define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \ MINSTREL_VHT_STREAM_GROUPS) #define MINSTREL_CCK_GROUPS_NB 1 #define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \ MINSTREL_VHT_GROUPS_NB + \ MINSTREL_CCK_GROUPS_NB) #define MINSTREL_HT_GROUP_0 0 #define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB) #define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1) #ifdef CONFIG_MAC80211_RC_MINSTREL_VHT #define MCS_GROUP_RATES 10 #else #define MCS_GROUP_RATES 8 #endif struct mcs_group { u32 flags; unsigned int streams; unsigned int duration[MCS_GROUP_RATES]; }; extern const struct mcs_group minstrel_mcs_groups[]; struct minstrel_mcs_group_data { u8 index; u8 column; /* sorted rate set within a MCS group*/ u16 max_group_tp_rate[MAX_THR_RATES]; u16 max_group_prob_rate; /* MCS rate statistics */ struct minstrel_rate_stats rates[MCS_GROUP_RATES]; }; struct minstrel_ht_sta { struct ieee80211_sta *sta; /* ampdu length (average, per sampling interval) */ unsigned int ampdu_len; unsigned int ampdu_packets; /* ampdu length (EWMA) */ unsigned int avg_ampdu_len; /* overall sorted rate set */ u16 max_tp_rate[MAX_THR_RATES]; u16 max_prob_rate; /* time of last status update */ unsigned long last_stats_update; /* overhead time in usec for each frame */ unsigned int overhead; unsigned int overhead_rtscts; unsigned int total_packets; unsigned int sample_packets; /* tx flags to add for frames for this sta */ u32 tx_flags; u8 sample_wait; u8 sample_tries; u8 sample_count; u8 sample_slow; /* current MCS group to be sampled */ u8 sample_group; u8 cck_supported; u8 cck_supported_short; /* Bitfield of supported MCS rates of all groups */ u16 supported[MINSTREL_GROUPS_NB]; /* MCS rate group info and statistics */ struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB]; }; struct minstrel_ht_sta_priv { union { struct minstrel_ht_sta ht; struct minstrel_sta_info legacy; }; #ifdef CONFIG_MAC80211_DEBUGFS struct dentry *dbg_stats; struct dentry *dbg_stats_csv; #endif void *ratelist; void *sample_table; bool is_ht; }; void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir); void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta); int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate, int prob_ewma); #endif /commit/net/rxrpc?h=nds-private-remove&id=dd86e373e09fb16b83e8adf5c48c421a4ca76468'>rxrpc/key.c
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /net/rxrpc/key.c
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/rxrpc/key.c')