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Merge 4.9.74 into android-4.9

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Changes in 4.9.74
	sync objtool's copy of x86-opcode-map.txt
	tracing: Remove extra zeroing out of the ring buffer page
	tracing: Fix possible double free on failure of allocating trace buffer
	tracing: Fix crash when it fails to alloc ring buffer
	ring-buffer: Mask out the info bits when returning buffer page length
	iw_cxgb4: Only validate the MSN for successful completions
	ASoC: wm_adsp: Fix validation of firmware and coeff lengths
	ASoC: da7218: fix fix child-node lookup
	ASoC: fsl_ssi: AC'97 ops need regmap, clock and cleaning up on failure
	ASoC: twl4030: fix child-node lookup
	ASoC: tlv320aic31xx: Fix GPIO1 register definition
	ALSA: hda: Drop useless WARN_ON()
	ALSA: hda - fix headset mic detection issue on a Dell machine
	x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly()
	x86/mm: Remove flush_tlb() and flush_tlb_current_task()
	x86/mm: Make flush_tlb_mm_range() more predictable
	x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range()
	x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code
	x86/mm: Disable PCID on 32-bit kernels
	x86/mm: Add the 'nopcid' boot option to turn off PCID
	x86/mm: Enable CR4.PCIDE on supported systems
	x86/mm/64: Fix reboot interaction with CR4.PCIDE
	kbuild: add '-fno-stack-check' to kernel build options
	ipv4: igmp: guard against silly MTU values
	ipv6: mcast: better catch silly mtu values
	net: fec: unmap the xmit buffer that are not transferred by DMA
	net: igmp: Use correct source address on IGMPv3 reports
	netlink: Add netns check on taps
	net: qmi_wwan: add Sierra EM7565 1199:9091
	net: reevalulate autoflowlabel setting after sysctl setting
	ptr_ring: add barriers
	RDS: Check cmsg_len before dereferencing CMSG_DATA
	tcp_bbr: record "full bw reached" decision in new full_bw_reached bit
	tcp md5sig: Use skb's saddr when replying to an incoming segment
	tg3: Fix rx hang on MTU change with 5717/5719
	net: ipv4: fix for a race condition in raw_sendmsg
	net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case
	sctp: Replace use of sockets_allocated with specified macro.
	adding missing rcu_read_unlock in ipxip6_rcv
	ipv4: Fix use-after-free when flushing FIB tables
	net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks
	net: fec: Allow reception of frames bigger than 1522 bytes
	net: Fix double free and memory corruption in get_net_ns_by_id()
	net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround
	sock: free skb in skb_complete_tx_timestamp on error
	tcp: invalidate rate samples during SACK reneging
	net/mlx5: Fix rate limit packet pacing naming and struct
	net/mlx5e: Fix features check of IPv6 traffic
	net/mlx5e: Fix possible deadlock of VXLAN lock
	net/mlx5e: Add refcount to VXLAN structure
	net/mlx5e: Prevent possible races in VXLAN control flow
	net/mlx5: Fix error flow in CREATE_QP command
	s390/qeth: apply takeover changes when mode is toggled
	s390/qeth: don't apply takeover changes to RXIP
	s390/qeth: lock IP table while applying takeover changes
	s390/qeth: update takeover IPs after configuration change
	usbip: fix usbip bind writing random string after command in match_busid
	usbip: prevent leaking socket pointer address in messages
	usbip: stub: stop printing kernel pointer addresses in messages
	usbip: vhci: stop printing kernel pointer addresses in messages
	USB: serial: ftdi_sio: add id for Airbus DS P8GR
	USB: serial: qcserial: add Sierra Wireless EM7565
	USB: serial: option: add support for Telit ME910 PID 0x1101
	USB: serial: option: adding support for YUGA CLM920-NC5
	usb: Add device quirk for Logitech HD Pro Webcam C925e
	usb: add RESET_RESUME for ELSA MicroLink 56K
	USB: Fix off by one in type-specific length check of BOS SSP capability
	usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201
	timers: Use deferrable base independent of base::nohz_active
	timers: Invoke timer_start_debug() where it makes sense
	timers: Reinitialize per cpu bases on hotplug
	nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
	x86/smpboot: Remove stale TLB flush invocations
	n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD)
	tty: fix tty_ldisc_receive_buf() documentation
	mm/vmstat: Make NR_TLB_REMOTE_FLUSH_RECEIVED available even on UP
	Linux 4.9.74

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2018-01-02 20:45:15 +01:00
parent f3f3457d45 07bcb2489b
commit 9e5dd8ed9b
95 changed files with 550 additions and 431 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/time/tick-sched.c
+17 -2
View File
@@ -663,6 +663,11 @@ static void tick_nohz_restart(struct tick_sched *ts, ktime_t now)
tick_program_event(hrtimer_get_expires(&ts->sched_timer), 1);
}
static inline bool local_timer_softirq_pending(void)
{
return local_softirq_pending() & TIMER_SOFTIRQ;
}
static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
ktime_t now, int cpu)
{
@@ -679,8 +684,18 @@ static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
} while (read_seqretry(&jiffies_lock, seq));
ts->last_jiffies = basejiff;
if (rcu_needs_cpu(basemono, &next_rcu) ||
arch_needs_cpu() || irq_work_needs_cpu()) {
/*
* Keep the periodic tick, when RCU, architecture or irq_work
* requests it.
* Aside of that check whether the local timer softirq is
* pending. If so its a bad idea to call get_next_timer_interrupt()
* because there is an already expired timer, so it will request
* immeditate expiry, which rearms the hardware timer with a
* minimal delta which brings us back to this place
* immediately. Lather, rinse and repeat...
*/
if (rcu_needs_cpu(basemono, &next_rcu) || arch_needs_cpu() ||
irq_work_needs_cpu() || local_timer_softirq_pending()) {
next_tick = basemono + TICK_NSEC;
} else {
/*
kernel/time/timer.c
+24 -11
View File
@@ -849,11 +849,10 @@ static inline struct timer_base *get_timer_cpu_base(u32 tflags, u32 cpu)
struct timer_base *base = per_cpu_ptr(&timer_bases[BASE_STD], cpu);
/*
* If the timer is deferrable and nohz is active then we need to use
* the deferrable base.
* If the timer is deferrable and NO_HZ_COMMON is set then we need
* to use the deferrable base.
*/
if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active &&
(tflags & TIMER_DEFERRABLE))
if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && (tflags & TIMER_DEFERRABLE))
base = per_cpu_ptr(&timer_bases[BASE_DEF], cpu);
return base;
}
@@ -863,11 +862,10 @@ static inline struct timer_base *get_timer_this_cpu_base(u32 tflags)
struct timer_base *base = this_cpu_ptr(&timer_bases[BASE_STD]);
/*
* If the timer is deferrable and nohz is active then we need to use
* the deferrable base.
* If the timer is deferrable and NO_HZ_COMMON is set then we need
* to use the deferrable base.
*/
if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active &&
(tflags & TIMER_DEFERRABLE))
if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && (tflags & TIMER_DEFERRABLE))
base = this_cpu_ptr(&timer_bases[BASE_DEF]);
return base;
}
@@ -1021,8 +1019,6 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only)
if (!ret && pending_only)
goto out_unlock;
debug_activate(timer, expires);
new_base = get_target_base(base, timer->flags);
if (base != new_base) {
@@ -1046,6 +1042,8 @@ __mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only)
}
}
debug_activate(timer, expires);
timer->expires = expires;
/*
* If 'idx' was calculated above and the base time did not advance
@@ -1684,7 +1682,7 @@ static __latent_entropy void run_timer_softirq(struct softirq_action *h)
base->must_forward_clk = false;
__run_timers(base);
if (IS_ENABLED(CONFIG_NO_HZ_COMMON) && base->nohz_active)
if (IS_ENABLED(CONFIG_NO_HZ_COMMON))
__run_timers(this_cpu_ptr(&timer_bases[BASE_DEF]));
}
@@ -1853,6 +1851,21 @@ static void migrate_timer_list(struct timer_base *new_base, struct hlist_head *h
}
}
int timers_prepare_cpu(unsigned int cpu)
{
struct timer_base *base;
int b;
for (b = 0; b < NR_BASES; b++) {
base = per_cpu_ptr(&timer_bases[b], cpu);
base->clk = jiffies;
base->next_expiry = base->clk + NEXT_TIMER_MAX_DELTA;
base->is_idle = false;
base->must_forward_clk = true;
}
return 0;
}
int timers_dead_cpu(unsigned int cpu)
{
struct timer_base *old_base;