vmalloc.h used to be included from include/net/inet_hashtables.h
but it is no longer the case.
Fixes: 095dc8e0c3 ("tcp: fix/cleanup inet_ehash_locks_alloc()")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Eric Dumazet <edumzet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Aleksey Makarov says:
====================
Adding support for Cavium ThunderX network controller
This patchset adds support for the Cavium ThunderX network controller.
changes in v6:
* unused preprocessor symbols were removed
* reduce no of atomic operations in SQ maintenance
* support for TCP segmentation at driver level
* reset RBDR if fifo state is FAIL
* fixed an issue with link state mailbox message
changes in v5:
* __packed were removed. now we rely on C language ABI
* nic_dbg() -> netdev_dbg()
* fixes for a typo, constant spelling and using BIT_ULL
* use print_hex_dump()
* unnecessary conditions in a long if() chain were removed
changes in v4:
* the patch "pci: Add Cavium PCI vendor id" was attributed correctly
* a note that Cavium id is used in many drivers was added
* the license comments now match MODULE_LICENSE
* a comment explaining usage of writeq_relaxed()/readq_relaxed() was added
changes in v3:
* code cleanup
* issues discovered by reviewers were addressed
changes in v2:
* non-generic module parameters removed
* ethtool support added (nicvf_set_rxnfc())
v5: https://lkml.kernel.org/g/<1432344498-17131-1-git-send-email-aleksey.makarov@caviumnetworks.com>
v4: https://lkml.kernel.org/g/<1432000757-28700-1-git-send-email-aleksey.makarov@auriga.com>
v3: https://lkml.kernel.org/g/<1431747401-20847-1-git-send-email-aleksey.makarov@auriga.com>
v2: https://lkml.kernel.org/g/<1415596445-10061-1-git-send-email-rric@kernel.org>
v1: https://lkml.kernel.org/g/<20141030165434.GW20170@rric.localhost>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support for the Cavium ThunderX network controller.
The driver is on the pci bus and thus requires the Thunder PCIe host
controller driver to be enabled.
Signed-off-by: Maciej Czekaj <mjc@semihalf.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Kamil Rytarowski <kamil@semihalf.com>
Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com>
Signed-off-by: Sruthi Vangala <svangala@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This vendor id will be used by network (vNIC), USB (xHCI),
SATA (AHCI), GPIO, I2C, MMC and maybe other drivers
for ThunderX SoC.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp_v4_map_v6 was subtly writing and reading from members
of a union in a way the clobbered data it needed to read before
it read it.
Zeroing the v6 flowinfo overwrites the v4 sin_addr with 0, meaning
that every place that calls sctp_v4_map_v6 gets ::ffff:0.0.0.0 as the
result.
Reorder things to guarantee correct behaviour no matter what the
union layout is.
This impacts user space clients that open an IPv6 SCTP socket and
receive IPv4 connections. Prior to 299ee user space would see a
sockaddr with AF_INET and a correct address, after 299ee the sockaddr
is AF_INET6, but the address is wrong.
Fixes: 299ee123e1 (sctp: Fixup v4mapped behaviour to comply with Sock API)
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For mq qdisc, we add per tx queue qdisc to root qdisc
for display purpose, however, that happens too early,
before the new dev->qdisc is finally set, this causes
q->list points to an old root qdisc which is going to be
freed right before assigning with a new one.
Fix this by moving ->attach() after setting dev->qdisc.
For the record, this fixes the following crash:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 975 at lib/list_debug.c:59 __list_del_entry+0x5a/0x98()
list_del corruption. prev->next should be ffff8800d1998ae8, but was 6b6b6b6b6b6b6b6b
CPU: 1 PID: 975 Comm: tc Not tainted 4.1.0-rc4+ #1019
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
0000000000000009 ffff8800d73fb928 ffffffff81a44e7f 0000000047574756
ffff8800d73fb978 ffff8800d73fb968 ffffffff810790da ffff8800cfc4cd20
ffffffff814e725b ffff8800d1998ae8 ffffffff82381250 0000000000000000
Call Trace:
[<ffffffff81a44e7f>] dump_stack+0x4c/0x65
[<ffffffff810790da>] warn_slowpath_common+0x9c/0xb6
[<ffffffff814e725b>] ? __list_del_entry+0x5a/0x98
[<ffffffff81079162>] warn_slowpath_fmt+0x46/0x48
[<ffffffff81820eb0>] ? dev_graft_qdisc+0x5e/0x6a
[<ffffffff814e725b>] __list_del_entry+0x5a/0x98
[<ffffffff814e72a7>] list_del+0xe/0x2d
[<ffffffff81822f05>] qdisc_list_del+0x1e/0x20
[<ffffffff81820cd1>] qdisc_destroy+0x30/0xd6
[<ffffffff81822676>] qdisc_graft+0x11d/0x243
[<ffffffff818233c1>] tc_get_qdisc+0x1a6/0x1d4
[<ffffffff810b5eaf>] ? mark_lock+0x2e/0x226
[<ffffffff817ff8f5>] rtnetlink_rcv_msg+0x181/0x194
[<ffffffff817ff72e>] ? rtnl_lock+0x17/0x19
[<ffffffff817ff72e>] ? rtnl_lock+0x17/0x19
[<ffffffff817ff774>] ? __rtnl_unlock+0x17/0x17
[<ffffffff81855dc6>] netlink_rcv_skb+0x4d/0x93
[<ffffffff817ff756>] rtnetlink_rcv+0x26/0x2d
[<ffffffff818544b2>] netlink_unicast+0xcb/0x150
[<ffffffff81161db9>] ? might_fault+0x59/0xa9
[<ffffffff81854f78>] netlink_sendmsg+0x4fa/0x51c
[<ffffffff817d6e09>] sock_sendmsg_nosec+0x12/0x1d
[<ffffffff817d8967>] sock_sendmsg+0x29/0x2e
[<ffffffff817d8cf3>] ___sys_sendmsg+0x1b4/0x23a
[<ffffffff8100a1b8>] ? native_sched_clock+0x35/0x37
[<ffffffff810a1d83>] ? sched_clock_local+0x12/0x72
[<ffffffff810a1fd4>] ? sched_clock_cpu+0x9e/0xb7
[<ffffffff810def2a>] ? current_kernel_time+0xe/0x32
[<ffffffff810b4bc5>] ? lock_release_holdtime.part.29+0x71/0x7f
[<ffffffff810ddebf>] ? read_seqcount_begin.constprop.27+0x5f/0x76
[<ffffffff810b6292>] ? trace_hardirqs_on_caller+0x17d/0x199
[<ffffffff811b14d5>] ? __fget_light+0x50/0x78
[<ffffffff817d9808>] __sys_sendmsg+0x42/0x60
[<ffffffff817d9838>] SyS_sendmsg+0x12/0x1c
[<ffffffff81a50e97>] system_call_fastpath+0x12/0x6f
---[ end trace ef29d3fb28e97ae7 ]---
For long term, we probably need to clean up the qdisc_graft() code
in case it hides other bugs like this.
Fixes: 95dc19299f ("pkt_sched: give visibility to mq slave qdiscs")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While 3b52960266 ("test_bpf: add more eBPF jump torture cases")
added the int3 bug test case only for eBPF, which needs exactly 11
passes to converge, here's a version for classic BPF with 11 passes,
and one that would need 70 passes on x86_64 to actually converge for
being successfully JITed. Effectively, all jumps are being optimized
out resulting in a JIT image of just 89 bytes (from originally max
BPF insns), only returning K.
Might be useful as a receipe for folks wanting to craft a test case
when backporting the fix in commit 3f7352bf21 ("x86: bpf_jit: fix
compilation of large bpf programs") while not having eBPF. The 2nd
one is delegated to the interpreter as the last pass still results
in shrinking, in other words, this one won't be JITed on x86_64.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
xennet_remove() freed the queues before freeing the netdevice which
results in a use-after-free when free_netdev() tries to delete the
napi instances that have already been freed.
Fix this by fully destroy the queues (which includes deleting the napi
instances) before freeing the netdevice.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull x86 fixes from Ingo Molnar:
"This tree includes:
- a fix that disables the compacted FPU XSAVE format by disabling
XSAVES support: the fixes are too complex and the breakages
ABI-affecting, so we want this to be quirked off in a robust way
and backported, to make sure no broken kernel is exposed to the new
hardware (which exposure is still very limited).
- an MCE printk message fix
- a documentation fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Disable XSAVES* support for now
x86/Documentation: Update the contact email for L3 cache index disable functionality
x86/mce: Fix MCE severity messages
Edward Cree says:
====================
sfc: add MCDI tracing
This patchset adds support for logging MCDI (Management-Controller-to-
Driver Interface) interactions between the sfc driver and a bound device,
to aid in debugging.
Solarflare has a tool to decode the resulting traces and will look to
open-source this if there is any external interest, but the protocol is
already detailed in drivers/net/ethernet/sfc/mcdi_pcol.h.
The logging buffer we allocate per MCDI context is a work area for
constructing each individual message before logging it with netif_info.
The reason the buffer is long-lived is simply to avoid the overhead of
allocating and freeing it every MCDI call, since MCDIs are already known
to be serialised for other reasons.
--
v4: remove patch #4, which has already been applied via sshah
v3: add some explanations to cover letter and patch #4
v2: avoid long lines in cover letter; fix multiline comment style
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
As many issues are encountered at probe time, where MCDI logging can't be
enabled through the sysfs node, this change adds a module parameter
'mcdi_logging_default', which defaults to false. When set to true, newly-
probed functions will have MCDI logging enabled. The setting can
subsequently be changed as normal through the sysfs node.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
MCDI tracing is enabled per-function with a sysfs file
/sys/class/net/<NET_DEV>/device/mcdi_logging
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
MCDI tracing is conditional on CONFIG_SFC_MCDI_LOGGING, which is enabled
by default.
Each MCDI command will produce a console line like
sfc dom🚌dev:fn ifname: MCDI RPC REQ: xxxxxxxx [yyyyyyyy...]
where xxxxxxxx etc. are the raw MCDI payload in 32-bit hex chunks.
The response will then produce a similar line with "RESP" instead of "REQ",
and containing the MCDI response payload (if any).
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull alpha updates from Matt Turner:
"Please pull a small collection of patches that I've been neglecting.
Probably most importantly are the patches that wire up the new
syscalls needed by udev and the fix to the bootp{,z}file targets"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
alpha: kernel: osf_sys: Set 'kts.tv_nsec' only when 'tv' has effect
alpha: Wire up all missing implemented syscalls
alpha: Fix bootpfile and bootpzfile make targets
alpha: copy_thread(): rename 'arg' argument to 'kthread_arg'
alpha: delete non-required instances of <linux/init.h>
alpha: don't use module_init for non-modular core code
smp, alpha: kill SMP single function call interrupt
alpha: Remove #include <uapi/asm/types.h> from <asm/types.h>
alpha: clean up unnecessary MSI/MSI-X capability find
The commit df59fa7f4b "spi: orion: support armada extended baud
rates" made the assumptions that all the Armada SoCs supported the
same maximum frequency. However, according the hardware datasheet, the
maximum frequency supported by the Armada 370 SoC is tclk/4, for the
Armada XP, Armada 38x and Armada 39x SoCs the limitation is 50MHz and
for the Armada 375 it is tclk/15.
This patch introduces new compatible strings to handle all these
case. In order to be future proof a compatible was created for each
SoC even if currently some SoCs seem using the same IP.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
We're seeing some softlockups from this function when there
are a lot fdb entries on a vxlan device. Taking the lock for
each bucket instead of the whole table is enough to fix that.
Signed-off-by: Sorin Dumitru <sdumitru@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to unlock and unmap some resourses before returning.
Fixes: 3f2a43c98d ('ARM: BCM63xx: Add secondary CPU PMB initialization sequence')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
A long standing problem on busy servers is the tiny available TCP port
range (/proc/sys/net/ipv4/ip_local_port_range) and the default
sequential allocation of source ports in connect() system call.
If a host is having a lot of active TCP sessions, chances are
very high that all ports are in use by at least one flow,
and subsequent bind(0) attempts fail, or have to scan a big portion of
space to find a slot.
In this patch, I changed the starting point in __inet_hash_connect()
so that we try to favor even [1] ports, leaving odd ports for bind()
users.
We still perform a sequential search, so there is no guarantee, but
if connect() targets are very different, end result is we leave
more ports available to bind(), and we spread them all over the range,
lowering time for both connect() and bind() to find a slot.
This strategy only works well if /proc/sys/net/ipv4/ip_local_port_range
is even, ie if start/end values have different parity.
Therefore, default /proc/sys/net/ipv4/ip_local_port_range was changed to
32768 - 60999 (instead of 32768 - 61000)
There is no change on security aspects here, only some poor hashing
schemes could be eventually impacted by this change.
[1] : The odd/even property depends on ip_local_port_range values parity
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the following build warnings:
drivers/usb/gadget/udc/atmel_usba_udc.c:2207:12: warning:
‘usba_udc_suspend’ defined but not used [-Wunused-function] static int
usba_udc_suspend(struct device *dev)
drivers/usb/gadget/udc/atmel_usba_udc.c:2236:12: warning:
‘usba_udc_resume’ defined but not used [-Wunused-function] static int
usba_udc_resume(struct device *dev)
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes the following build warnings:
drivers/usb/musb/ux500.c:346:12: warning: ‘ux500_suspend’ defined but
not used [-Wunused-function]
drivers/usb/musb/ux500.c:357:12: warning: ‘ux500_resume’ defined but not
used [-Wunused-function]
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes the following build warnings:
drivers/usb/musb/am35x.c:573:12: warning: ‘am35x_suspend’ defined but
not used [-Wunused-function]
drivers/usb/musb/am35x.c:589:12: warning: ‘am35x_resume’ defined but not
used [-Wunused-function]
drivers/usb/musb/am35x.c:573:12: warning: ‘am35x_suspend’ defined but
not used [-Wunused-function]
drivers/usb/musb/am35x.c:589:12: warning: ‘am35x_resume’ defined but not
used [-Wunused-function]
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch adds support for the at86rf230 version check which is used
by the rzusb stick.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for setting the current cca ed level value over
nl802154.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds information about the current cca ed level when the phy
is dumped over nl802154.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The sunxi otg phy has a bug where it wrongly detects a high speed squelch
when reset on the root port gets de-asserted with a lo-speed device.
The workaround for this is to disable squelch detect before de-asserting
reset, and re-enabling it after the reset de-assert is done. Add a sunxi
specific phy function to allow the sunxi-musb glue to do this.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The test in mlx4_load_one() to remove MLX4_FLAG_MSI_X expects mlx4_NOP() to
fail with -EBUSY. It is also necessary to avoid the reset since the device
is not fully reinitialized before calling mlx4_start_hca() a second time.
Note that this will also affect mlx4_test_interrupts(), the only other user
of MLX4_CMD_NOP.
Fixes: f5aef5a ("net/mlx4_core: Activate reset flow upon fatal command cases")
Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal says:
====================
net: force refragmentation for DF reassembed skbs
output path tests:
if (skb->len > mtu) ip_fragment()
This breaks connectivity in one corner case:
If the skb was reassembled, but has the DF bit set and ..
.. its reassembled size is <= outdev mtu ..
.. we will forward a DF packet larger than what the sender
transmitted on wire.
If a router later in the path can't forward this packet, it will send an
icmp error in response to an mtu that the original sender never exceeded.
This changes ipv4 defrag/output path to
a) force refragmentation for DF reassembled skbs and
b) set DF bit on all fragments when refragmenting if it was set on original
frags.
tested via:
from scapy.all import *
dip="10.23.42.2"
payload="A"*1400
packet=IP(dst=dip,id=12345,flags='DF')/UDP(sport=42,dport=42)/payload
frags=fragment(packet,fragsize=1200)
for fragment in frags:
send(fragment)
Without this patch, we generate fragments without df bit set based
on the outgoing device mtu when fragmenting after forwarding, ie.
IP (ttl 64, id 12345, offset 0, flags [+, DF], proto UDP (17), length 1204)
192.168.7.1.42 > 10.23.42.2.42: UDP, length 1400
IP (ttl 64, id 12345, offset 1184, flags [DF], proto UDP (17), length 244)
192.168.7.1 > 10.23.42.2: ip-proto-17
on ingress will either turn into
IP (ttl 63, id 12345, offset 0, flags [+], proto UDP (17), length 1396)
192.168.7.1.42 > 10.23.42.2.42: UDP, length 1400
IP (ttl 63, id 12345, offset 1376, flags [none], proto UDP (17), length 52)
(mtu 1400: We strip df and send larger fragment), or
IP (ttl 63, id 12345, offset 0, flags [DF], proto UDP (17), length 1428)
192.168.7.1.42 > 10.23.42.2.42: [udp sum ok] UDP, length 1400
if mtu is 1500. And in this case things break; router with a smaller mtu
will send icmp error, but original sender only sent packets <= 1204 byte.
With patch, we keep intent of such fragments and will emit DF-fragments
that won't exceed 1204 byte in size.
Joint work with Hannes Frederic Sowa.
Changes since v2:
- split unrelated patches from series
- rework changelog of patch #2 to better illustrate breakage
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We currently always send fragments without DF bit set.
Thus, given following setup:
mtu1500 - mtu1500:1400 - mtu1400:1280 - mtu1280
A R1 R2 B
Where R1 and R2 run linux with netfilter defragmentation/conntrack
enabled, then if Host A sent a fragmented packet _with_ DF set to B, R1
will respond with icmp too big error if one of these fragments exceeded
1400 bytes.
However, if R1 receives fragment sizes 1200 and 100, it would
forward the reassembled packet without refragmenting, i.e.
R2 will send an icmp error in response to a packet that was never sent,
citing mtu that the original sender never exceeded.
The other minor issue is that a refragmentation on R1 will conceal the
MTU of R2-B since refragmentation does not set DF bit on the fragments.
This modifies ip_fragment so that we track largest fragment size seen
both for DF and non-DF packets, and set frag_max_size to the largest
value.
If the DF fragment size is larger or equal to the non-df one, we will
consider the packet a path mtu probe:
We set DF bit on the reassembled skb and also tag it with a new IPCB flag
to force refragmentation even if skb fits outdev mtu.
We will also set DF bit on each fragment in this case.
Joint work with Hannes Frederic Sowa.
Reported-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
ip_skb_dst_mtu is small inline helper, but its called in several places.
before: 17061 44 0 17105 42d1 net/ipv4/ip_output.o
after: 16805 44 0 16849 41d1 net/ipv4/ip_output.o
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The NAND controller is a child node of the UBUS (legacy) bus, not the
AXI (new) bus, re-parent the NAND controller node accordingly. This was
a mistake introduced by a failed merge of this NAND node with other
changes (PMB).
Fixes: b5762cacc4 ("ARM: bcm63138: add NAND DT support")
Reported-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This bug has been there since day 1; addresses in the top guest physical
page weren't considered valid. You could map that page (the check in
check_gpte() is correct), but if a guest tried to put a pagetable there
we'd check that address manually when walking it, and kill the guest.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit e9ce7cb6b1 ("xen-netback: Factor queue-specific data into queue
struct") introduced a regression when moving queue-specific data into
the queue struct by failing to set the credit_bytes field. This
prevented bandwidth limiting from working. Initialize the field as it
was done before multiqueue support was added.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull two overlayfs fixes from Miklos Szeredi:
"Overlayfs rmdir() failed to check for emptiness in one case; this was
introduced in 4.0. The other bug was there since day one: failure to
mount if upper fs is full, which bit some OpenWRT folks"
* 'overlayfs-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: mount read-only if workdir can't be created
ovl: don't remove non-empty opaque directory
In d74b9027a4 ("PCI: Consider additional PF's IOV BAR alignment in sizing
and assigning"), it stores additional alignment in realloc_head and takes
this into consideration for assignment.
After getting the additional alignment, it reorders the head list so
resources with bigger alignment are ahead of resources with smaller
alignment. It does this by iterating over the head list and inserting
ahead of any resource with smaller alignment. This should be done for the
first occurrence, but the code currently iterates over the whole list.
Fix this by terminating the loop when we find the first smaller resource in
the head list.
[bhelgaas: changelog]
Fixes: d74b9027a4 ("PCI: Consider additional PF's IOV BAR alignment in sizing and assigning")
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
New features:
- Add option in 'perf sched' to merge like comms to lat output (Josef Bacik)
- Improve 'perf probe' error messages when not finding a
suitable vmlinux (Masami Hiramatsu)
Infrastructure:
- Use atomic.h for various pre-existing reference counts (Arnaldo Carvalho de Melo)
- Leg work for refcounting 'struct map' (Arnaldo Carvalho de Melo)
- Assign default value for some pointers (Martin Liška)
- Improve setting of gcc debug option (Martin Liška)
- Separate the tests and tools in installation (Nam T. Nguyen)
- Reduce number of arguments of hist_entry_iter__add() (Namhyung Kim)
- DSO data cache fixes (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
New features:
- Add option in 'perf sched' to merge like comms to lat output (Josef Bacik)
- Improve 'perf probe' error messages when not finding a
suitable vmlinux (Masami Hiramatsu)
Infrastructure changes:
- Use atomic.h for various pre-existing reference counts (Arnaldo Carvalho de Melo)
- Leg work for refcounting 'struct map' (Arnaldo Carvalho de Melo)
- Assign default value for some pointers (Martin Liška)
- Improve setting of gcc debug option (Martin Liška)
- Separate the tests and tools in installation (Nam T. Nguyen)
- Reduce number of arguments of hist_entry_iter__add() (Namhyung Kim)
- DSO data cache fixes (Namhyung Kim)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
After b97ea289cf ("PCI: Assign resources before drivers claim devices
(pci_scan_root_bus())"), pci_scan_root_bus() no longer adds the devices, so
it is equivalent to:
pci_create_root_bus()
pci_scan_child_bus()
Use pci_scan_root_bus() to simplify the code.
[bhelgaas: changelog]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
CC: Mohit Kumar <mohit.kumar@st.com>
After b97ea289cf ("PCI: Assign resources before drivers claim devices
(pci_scan_root_bus())"), pci_scan_root_bus() no longer adds the devices, so
it is equivalent to tegra_pcie_scan_bus().
Remove tegra_pcie_scan_bus() (the hw.scan method), so we use the generic
pci_scan_root_bus() path.
[bhelgaas: changelog]
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
When detecting packet discontinuity, handle_in_packet() returns minus value
and this value is assigned to unsigned int variable, then the variable has
huge value. As a result, the variable causes buffer-over-run in
handle_out_packet(). This brings invalid page request and system hangup.
This commit fixes the bug to add a new argument into handle_in_packet()
and the number of handled data blocks is assignd to it. The function
return value is just used to check error.
I also considered to change the type of local variable to 'int' in
in_stream_callback(). This idea is based on type-conversion in C standard,
while it may cause future problems when adding more works. Thus, I dropped
this idea.
Fixes: 6fc6b9ce41c6('ALSA: firewire-lib: pass the number of data blocks in incoming packets to outgoing packets')
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Pull crypto fix from Herbert Xu:
"This disables the newly (4.1) added user-space AEAD interface so that
we can fix issues in the underlying kernel AEAD interface. Once the
new kernel AEAD interface is ready we can then reenable the user-space
AEAD interface"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: algif_aead - Disable AEAD user-space for now
Fix a bug in del_perf_probe_events() which returns an error (-ENOENT)
even if the probes are successfully deleted.
This happens only if the probes are on user-apps and not on kernel,
simply because it doesn't clear the previous error.
So, without this fix, we get an error even though events are being
successfully removed.
------
# ./perf probe -x ./perf del_perf_probe_events
Added new event:
probe_perf:del_perf_probe_events (on del_perf_probe_events in ...
You can now use it in all perf tools, such as:
perf record -e probe_perf:del_perf_probe_events -aR sleep 1
# ./perf probe -d \*:\*
Removed event: probe_perf:del_perf_probe_events
Error: Failed to delete events.
------
This fixes the above error.
------
# ./perf probe -d \*:\*
Removed event: probe_perf:del_perf_probe_events
------
Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/20150527083725.23880.45209.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Show the reason of error when dso__load* fails. This shows when user
gives wrong kernel image or wrong path.
Without this, perf probe shows an obscure message:
----
$ perf probe -k ~/kbin/linux-3.x86_64/vmlinux -L vfs_read
Failed to find path of kernel module.
Error: Failed to show lines.
----
With this, perf shows appropriate error message:
----
$ perf probe -k ~/kbin/linux-3.x86_64/vmlinux -L vfs_read
Failed to find the path for kernel: Mismatching build id
Error: Failed to show lines.
----
And:
----
$ perf probe -k /non-exist/kernel/vmlinux -L vfs_read
Failed to find the path for kernel: No such file or directory
Error: Failed to show lines.
----
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/20150527083718.23880.84100.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Disallow PMU events intel_pt and intel_bts until the tools support them.
By default any PMU is selectable as an event but until the tools have
intel_pt and intel_bts support using them would result in no data being
recorded without any indication as to why.
Before the change:
$ perf record -e intel_bts// sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.008 MB perf.data ]
$ perf report --stdio
Error:
The perf.data file has no samples!
After the change:
$ perf record -e intel_bts// sleep 1
invalid or unsupported event: 'intel_bts//'
Run 'perf list' for a list of valid events
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1432295653-13989-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Sometimes when debugging large multi-threaded applications it is helpful
to collate all of the latency numbers into one bulk record to get an
idea of what is going on.
This patch does this by merging any entries that belong to the same comm
into one entry and then spits out those totals.
I've also slightly changed the output so you can see how many threads
were merged in the processing. Here is the new default output format
-----------------------------------------------------------------------------------------------------------
Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |
-----------------------------------------------------------------------------------------------------------
chrome:(23) | 740.878 ms | 2612 | avg: 0.022 ms | max: 0.845 ms | max at: 7935.254223 s
pulseaudio:1523 | 94.440 ms | 597 | avg: 0.027 ms | max: 0.110 ms | max at: 7934.668372 s
threaded-ml:6042 | 72.554 ms | 386 | avg: 0.035 ms | max: 1.186 ms | max at: 7935.330911 s
Chrome_IOThread:3832 | 52.388 ms | 456 | avg: 0.021 ms | max: 1.365 ms | max at: 7935.330602 s
Chrome_ChildIOT:(7) | 50.694 ms | 743 | avg: 0.021 ms | max: 1.448 ms | max at: 7935.256659 s
Compositor:5510 | 30.012 ms | 192 | avg: 0.019 ms | max: 0.131 ms | max at: 7936.636815 s
plugin_audio_th:6043 | 24.828 ms | 314 | avg: 0.018 ms | max: 0.143 ms | max at: 7936.205994 s
CompositorTileW:(2) | 14.099 ms | 45 | avg: 0.022 ms | max: 0.153 ms | max at: 7937.521800 s
the (#) after the task is the number of tasks merged, and then if there were
no tasks merged it just shows the pid. Here is the same trace file with the -p
option to print the per-pid latency numbers
-----------------------------------------------------------------------------------------------------------
Task | Runtime ms | Switches | Average delay ms | Maximum delay ms | Maximum delay at |
-----------------------------------------------------------------------------------------------------------
chrome:5500 | 386.872 ms | 387 | avg: 0.023 ms | max: 0.241 ms | max at: 7936.001694 s
pulseaudio:1523 | 94.440 ms | 597 | avg: 0.027 ms | max: 0.110 ms | max at: 7934.668372 s
threaded-ml:6042 | 72.554 ms | 386 | avg: 0.035 ms | max: 1.186 ms | max at: 7935.330911 s
chrome:10226 | 69.710 ms | 251 | avg: 0.023 ms | max: 0.764 ms | max at: 7935.992305 s
chrome:4267 | 64.551 ms | 418 | avg: 0.021 ms | max: 0.294 ms | max at: 7937.862427 s
chrome:4827 | 62.268 ms | 54 | avg: 0.029 ms | max: 0.666 ms | max at: 7935.992813 s
Chrome_IOThread:3832 | 52.388 ms | 456 | avg: 0.021 ms | max: 1.365 ms | max at: 7935.330602 s
chrome:3776 | 46.150 ms | 349 | avg: 0.023 ms | max: 0.845 ms | max at: 7935.254223 s
Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@fb.com
Link: http://lkml.kernel.org/r/1432300720-30478-1-git-send-email-jbacik@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Correct debugging experience is given by passing -Og to compiler.
Do it in a way that supports older compilers
Signed-off-by: Martin Liska <mliska@suse.cz>
Acked-by: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/5564393C.1090104@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Assign default value for pointers that are identified by the compiler as
non-initialized.
Signed-off-by: Martin Liska <mliska@suse.cz>
Acked-by: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/5564393C.1090104@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
In a few more remaining places, for consistency.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-c2n7slwtto29wndfttdrhfrx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
