Commit Graph

480354 Commits

Author SHA1 Message Date
Giuseppe CAVALLARO
53b26b9bc9 stmmac: dwmac-sti: review the glue-logic for STi4xx and STiD127 SoCs
This patch is to review the whole glue logic adopted on STi SoCs that
was bugged.

In the old glue-logic there was a lot of confusion when setup the
retiming especially for STiD127 where, for example, the bits 6 and 7
(in the GMAC  control register) have a different meaning of what is
used for STiH4xx SoCs. So we cannot adopt the same glue for all these
SoCs.
Moreover, GiGa on STiD127 didn't work and, for all the SoCs, the RGMII
couldn't run when the speed was 10Mbps (because the clock was not properly
managed).
Note that the phy clock needs to be provided by the platform as well as
documented in the related binding file (updated as consequence).

The old code supported too many configurations never adopted and validated.
This made the code very complex to maintain and debug in case of issues.

The patch simplifies all the configurations as commented in the tables
inside the file and obviously it has been tested on all the boards
based on the SoCs mentioned.

With this patch, the dwmac-sti is also ready to support new configurations that
will be available on next SoC generations.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:40:06 -04:00
Giuseppe CAVALLARO
160e1fd10a stmmac: make the STi Layer compatible to STiH407
This adds the missing compatibility to the STiH407 SoC.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:40:06 -04:00
Giuseppe CAVALLARO
8c2a7a5d2c stmmac: platform: fix FIXED_PHY support.
On several STi platforms: e.g. stihxxx-b2120 an Ethernet switch is
embedded and connected to the stmmac via RGMII mode. So this is managed
by using the FIXED_PHY. In that case, the support in the platform needs
to be fixed to allow the stmmac to dialog with the switch via fixed-link
by using phy_bus_name property.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:39:30 -04:00
Arnaldo Carvalho de Melo
8885846fc4 perf evsel: Make some exit routines static
Since they are automatically called by other methods used by tools.

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ne3g4any7q6ty5d6yv8t1wws@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:55 -03:00
Arnaldo Carvalho de Melo
80b2210c62 perf evsel: Add missing 'target' struct forward declaration
We use it in evsel.h but were getting it indirectly, fix it.

Noticed while working on having evsel.h usable by rasd.c.

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-94t3jvw4tmzrq3dnovvpl65e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:54 -03:00
Arnaldo Carvalho de Melo
4112eb1899 perf evlist: Default to syswide target when no thread/cpu maps set
If all a tool wants is to do system wide event monitoring, there is no
more the need to setup thread_map and cpu_map objects, just call
perf_evlist__open() and it will do create one fd per CPU monitoring all
threads.

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-poovolkigu72brx4783uq4cf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:53 -03:00
Arnaldo Carvalho de Melo
1aaf63b1ee perf evlist: Check that there is a thread_map when preparing a workload
The perf_evlist__prepare_workload expects a thread map to be in place
so that it can store the pid of the workload being started, so check it
and tell the developer about it instead of segfaulting.

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-jvlz2f264e7kpmhjmwltikqw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:53 -03:00
Arnaldo Carvalho de Melo
641556c98c perf thread_map: Create dummy constructor out of open coded equivalent
Create a dummy thread_map, one that has just one entry and it is -1,
meaning 'all threads', as this ends up going down to perf_event_open().

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-8av26cz8uxmbnihl5mmrygp9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:52 -03:00
Arnaldo Carvalho de Melo
a635fc511e perf tools: Remove hists from evsel
Now tools that deals want to have an hists per evsel need to call
hists__init() before creating any evsels, which can be as early as when
parsing the command line, so do it before calling parse_options().

The current tools using hists/hist_entries are report, top and annotate,
change them to request per evsel hists.

This is in preparation for making evsels usable by 3rd party tools, that
not necessarily live in perf's source code repository.

Acked-by: Borislav Petkov <bp@suse.de>
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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-usjx2la743f10ippj7p1b20x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:52 -03:00
Arnaldo Carvalho de Melo
8f651eae18 perf callchain: Move the callchain_param extern to callchain.h
It was lost in hist.h, move it to where it belongs, callchain.h, as
there are places that gets hist.h by means of evsel.h, and since evsel.h
is being untangled from hist.h...

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-0rg7ji1jnbm6q6gj35j37jby@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:51 -03:00
Arnaldo Carvalho de Melo
ce8ccff5dd perf evsel: Subclassing
Provide a method to be called at tool start to config the perf_evsel
instance size, together with optional constructor and destructor.

This will be used so that perf_evsel doesn't always include a struct
hists, tools that works with hists/hist_entries, like report, top and
annotate, will, at start, tell the evsel class the size they need per
instance.

v2: Don't use exit as a name of a member of function parameter, as this
    breaks the build on at least fedora14 and rhel6.

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: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-7t8cay0ieryox4gqosie85ek@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-14 17:32:03 -03:00
Guenter Roeck
77b3a4dcde dsa: mv88e6171: Fix tag_protocol check
tag_protocol is now an enum, so drivers have to check against it.

Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:23:27 -04:00
Neale Ferguson
c07127b48c dlm: fix missing endian conversion of rcom_status flags
The flags are already converted to le when being sent,
but are not being converted back to cpu when received.

Signed-off-by: Neale Ferguson <neale@sinenomine.net>
Signed-off-by: David Teigland <teigland@redhat.com>
2014-10-14 15:11:48 -05:00
David S. Miller
4d1bafbe48 Merge branch 'xgene'
Iyappan Subramanian says:

====================
Adding SGMII based 1GbE basic support to APM X-Gene SoC ethernet driver.

v2: Address comments from v1
* Split the patchset into two, the first one being preparatory patch
* Added link_state function pointer to the xgene_mac_ops structure
* Added xgene_indirect_ctl structure for indirect read/write arguments

v1:
* Initial version
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:09:38 -04:00
Iyappan Subramanian
5e6a024beb drivers: net: xgene: Add SGMII based 1GbE ethtool support
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:09:22 -04:00
Iyappan Subramanian
32f784b50e drivers: net: xgene: Add SGMII based 1GbE support
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:09:21 -04:00
Iyappan Subramanian
dc8385f0c0 drivers: net: xgene: Preparing for adding SGMII based 1GbE
- Added link_state function pointer to the xgene__mac_ops structure
- Moved ring manager (pdata->rm) assignment to xgene_enet_setup_ops
- Removed unused variable (pdata->phy_addr) and macro (FULL_DUPLEX)

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:09:21 -04:00
Iyappan Subramanian
4c2e7f0954 dtb: Add SGMII based 1GbE node to APM X-Gene SoC device tree
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:09:21 -04:00
Alexei Starovoitov
c15952dc18 net: filter: move common defines into bpf_common.h
userspace programs that use eBPF instruction macros need to include two files:
uapi/linux/filter.h and uapi/linux/bpf.h
Move common macro definitions that are shared between classic BPF and eBPF
into uapi/linux/bpf_common.h, so that user app can include only one bpf.h file

Cc: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:06:45 -04:00
Fabian Frederick
91c4467e3c caif_usb: use target structure member in memset
parent cfusbl was used instead of first structure member 'layer'

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:05:45 -04:00
Fabian Frederick
7970f1918f caif_usb: remove redundant memory message
Let MM subsystem display out of memory messages.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:05:45 -04:00
Fabian Frederick
6ff1e1e3c8 caif: replace kmalloc/memset 0 by kzalloc
Also add blank line after declaration

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:04:07 -04:00
Mugunthan V N
030b16a0e3 drivers: net: cpsw: remove child devices while driver detach
remove all the child devices from the system to make sure that re-insert of
cpsw module doesn't fail on child device populated by of_platform_populate().

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:38 -04:00
Mugunthan V N
fc7a99fb71 drivers: net: davinci_cpdma: remove spinlock as SOFTIRQ-unsafe lock order detected
remove spinlock in cpdma_desc_pool_destroy() as there is no active cpdma
channel and iounmap should be called without auquiring lock.

root@dra7xx-evm:~# modprobe -r ti_cpsw
[   50.539743]
[   50.541312] ======================================================
[   50.547796] [ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ]
[   50.554826] 3.14.19-02124-g95c5b7b #308 Not tainted
[   50.559939] ------------------------------------------------------
[   50.566416] modprobe/1921 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[   50.573347]  (vmap_area_lock){+.+...}, at: [<c01127fc>] find_vmap_area+0x10/0x6c
[   50.581132]
[   50.581132] and this task is already holding:
[   50.587249]  (&(&pool->lock)->rlock#2){..-...}, at: [<bf017c74>] cpdma_ctlr_destroy+0x5c/0x114 [davinci_cpdma]
[   50.597766] which would create a new lock dependency:
[   50.603048]  (&(&pool->lock)->rlock#2){..-...} -> (vmap_area_lock){+.+...}
[   50.610296]
[   50.610296] but this new dependency connects a SOFTIRQ-irq-safe lock:
[   50.618601]  (&(&pool->lock)->rlock#2){..-...}
... which became SOFTIRQ-irq-safe at:
[   50.626829]   [<c06585a4>] _raw_spin_lock_irqsave+0x38/0x4c
[   50.632677]   [<bf01773c>] cpdma_desc_free.constprop.7+0x28/0x58 [davinci_cpdma]
[   50.640437]   [<bf0177e8>] __cpdma_chan_free+0x7c/0xa8 [davinci_cpdma]
[   50.647289]   [<bf017908>] __cpdma_chan_process+0xf4/0x134 [davinci_cpdma]
[   50.654512]   [<bf017984>] cpdma_chan_process+0x3c/0x54 [davinci_cpdma]
[   50.661455]   [<bf0277e8>] cpsw_poll+0x14/0xa8 [ti_cpsw]
[   50.667038]   [<c05844f4>] net_rx_action+0xc0/0x1e8
[   50.672150]   [<c0048234>] __do_softirq+0xcc/0x304
[   50.677183]   [<c004873c>] irq_exit+0xa8/0xfc
[   50.681751]   [<c000eeac>] handle_IRQ+0x50/0xb0
[   50.686513]   [<c0008638>] gic_handle_irq+0x28/0x5c
[   50.691628]   [<c06590a4>] __irq_svc+0x44/0x5c
[   50.696289]   [<c0658ab4>] _raw_spin_unlock_irqrestore+0x34/0x44
[   50.702591]   [<c065a9c4>] do_page_fault.part.9+0x144/0x3c4
[   50.708433]   [<c065acb8>] do_page_fault+0x74/0x84
[   50.713453]   [<c00083dc>] do_DataAbort+0x34/0x98
[   50.718391]   [<c065923c>] __dabt_usr+0x3c/0x40
[   50.723148]
[   50.723148] to a SOFTIRQ-irq-unsafe lock:
[   50.728893]  (vmap_area_lock){+.+...}
... which became SOFTIRQ-irq-unsafe at:
[   50.736476] ...  [<c06584e8>] _raw_spin_lock+0x28/0x38
[   50.741876]   [<c011376c>] alloc_vmap_area.isra.28+0xb8/0x300
[   50.747908]   [<c0113a44>] __get_vm_area_node.isra.29+0x90/0x134
[   50.754210]   [<c011486c>] get_vm_area_caller+0x3c/0x48
[   50.759692]   [<c0114be0>] vmap+0x40/0x78
[   50.763900]   [<c09442f0>] check_writebuffer_bugs+0x54/0x1a0
[   50.769835]   [<c093eac0>] start_kernel+0x320/0x388
[   50.774952]   [<80008074>] 0x80008074
[   50.778793]
[   50.778793] other info that might help us debug this:
[   50.778793]
[   50.787181]  Possible interrupt unsafe locking scenario:
[   50.787181]
[   50.794295]        CPU0                    CPU1
[   50.799042]        ----                    ----
[   50.803785]   lock(vmap_area_lock);
[   50.807446]                                local_irq_disable();
[   50.813652]                                lock(&(&pool->lock)->rlock#2);
[   50.820782]                                lock(vmap_area_lock);
[   50.827086]   <Interrupt>
[   50.829823]     lock(&(&pool->lock)->rlock#2);
[   50.834490]
[   50.834490]  *** DEADLOCK ***
[   50.834490]
[   50.840695] 4 locks held by modprobe/1921:
[   50.844981]  #0:  (&__lockdep_no_validate__){......}, at: [<c03e53e8>] driver_detach+0x44/0xb8
[   50.854038]  #1:  (&__lockdep_no_validate__){......}, at: [<c03e53f4>] driver_detach+0x50/0xb8
[   50.863102]  #2:  (&(&ctlr->lock)->rlock){......}, at: [<bf017c34>] cpdma_ctlr_destroy+0x1c/0x114 [davinci_cpdma]
[   50.873890]  #3:  (&(&pool->lock)->rlock#2){..-...}, at: [<bf017c74>] cpdma_ctlr_destroy+0x5c/0x114 [davinci_cpdma]
[   50.884871]
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
[   50.892827] -> (&(&pool->lock)->rlock#2){..-...} ops: 167 {
[   50.898703]    IN-SOFTIRQ-W at:
[   50.901995]                     [<c06585a4>] _raw_spin_lock_irqsave+0x38/0x4c
[   50.909476]                     [<bf01773c>] cpdma_desc_free.constprop.7+0x28/0x58 [davinci_cpdma]
[   50.918878]                     [<bf0177e8>] __cpdma_chan_free+0x7c/0xa8 [davinci_cpdma]
[   50.927366]                     [<bf017908>] __cpdma_chan_process+0xf4/0x134 [davinci_cpdma]
[   50.936218]                     [<bf017984>] cpdma_chan_process+0x3c/0x54 [davinci_cpdma]
[   50.944794]                     [<bf0277e8>] cpsw_poll+0x14/0xa8 [ti_cpsw]
[   50.952009]                     [<c05844f4>] net_rx_action+0xc0/0x1e8
[   50.958765]                     [<c0048234>] __do_softirq+0xcc/0x304
[   50.965432]                     [<c004873c>] irq_exit+0xa8/0xfc
[   50.971635]                     [<c000eeac>] handle_IRQ+0x50/0xb0
[   50.978035]                     [<c0008638>] gic_handle_irq+0x28/0x5c
[   50.984788]                     [<c06590a4>] __irq_svc+0x44/0x5c
[   50.991085]                     [<c0658ab4>] _raw_spin_unlock_irqrestore+0x34/0x44
[   50.999023]                     [<c065a9c4>] do_page_fault.part.9+0x144/0x3c4
[   51.006510]                     [<c065acb8>] do_page_fault+0x74/0x84
[   51.013171]                     [<c00083dc>] do_DataAbort+0x34/0x98
[   51.019738]                     [<c065923c>] __dabt_usr+0x3c/0x40
[   51.026129]    INITIAL USE at:
[   51.029335]                    [<c06585a4>] _raw_spin_lock_irqsave+0x38/0x4c
[   51.036729]                    [<bf017d78>] cpdma_chan_submit+0x4c/0x2f0 [davinci_cpdma]
[   51.045225]                    [<bf02863c>] cpsw_ndo_open+0x378/0x6bc [ti_cpsw]
[   51.052897]                    [<c058747c>] __dev_open+0x9c/0x104
[   51.059287]                    [<c05876ec>] __dev_change_flags+0x88/0x160
[   51.066420]                    [<c05877e4>] dev_change_flags+0x18/0x48
[   51.073270]                    [<c05ed51c>] devinet_ioctl+0x61c/0x6e0
[   51.080029]                    [<c056ee54>] sock_ioctl+0x5c/0x298
[   51.086418]                    [<c01350a4>] do_vfs_ioctl+0x78/0x61c
[   51.092993]                    [<c01356ac>] SyS_ioctl+0x64/0x74
[   51.099200]                    [<c000e580>] ret_fast_syscall+0x0/0x48
[   51.105956]  }
[   51.107696]  ... key      at: [<bf019000>] __key.21312+0x0/0xfffff650 [davinci_cpdma]
[   51.115912]  ... acquired at:
[   51.119019]    [<c00899ac>] lock_acquire+0x9c/0x104
[   51.124138]    [<c06584e8>] _raw_spin_lock+0x28/0x38
[   51.129341]    [<c01127fc>] find_vmap_area+0x10/0x6c
[   51.134547]    [<c0114960>] remove_vm_area+0x8/0x6c
[   51.139659]    [<c0114a7c>] __vunmap+0x20/0xf8
[   51.144318]    [<c001c350>] __arm_iounmap+0x10/0x18
[   51.149440]    [<bf017d08>] cpdma_ctlr_destroy+0xf0/0x114 [davinci_cpdma]
[   51.156560]    [<bf026294>] cpsw_remove+0x48/0x8c [ti_cpsw]
[   51.162407]    [<c03e62c8>] platform_drv_remove+0x18/0x1c
[   51.168063]    [<c03e4c44>] __device_release_driver+0x70/0xc8
[   51.174094]    [<c03e5458>] driver_detach+0xb4/0xb8
[   51.179212]    [<c03e4a6c>] bus_remove_driver+0x4c/0x90
[   51.184693]    [<c00b024c>] SyS_delete_module+0x10c/0x198
[   51.190355]    [<c000e580>] ret_fast_syscall+0x0/0x48
[   51.195661]
[   51.197217]
the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock:
[   51.205986] -> (vmap_area_lock){+.+...} ops: 520 {
[   51.211032]    HARDIRQ-ON-W at:
[   51.214321]                     [<c06584e8>] _raw_spin_lock+0x28/0x38
[   51.221090]                     [<c011376c>] alloc_vmap_area.isra.28+0xb8/0x300
[   51.228750]                     [<c0113a44>] __get_vm_area_node.isra.29+0x90/0x134
[   51.236690]                     [<c011486c>] get_vm_area_caller+0x3c/0x48
[   51.243811]                     [<c0114be0>] vmap+0x40/0x78
[   51.249654]                     [<c09442f0>] check_writebuffer_bugs+0x54/0x1a0
[   51.257239]                     [<c093eac0>] start_kernel+0x320/0x388
[   51.263994]                     [<80008074>] 0x80008074
[   51.269474]    SOFTIRQ-ON-W at:
[   51.272769]                     [<c06584e8>] _raw_spin_lock+0x28/0x38
[   51.279525]                     [<c011376c>] alloc_vmap_area.isra.28+0xb8/0x300
[   51.287190]                     [<c0113a44>] __get_vm_area_node.isra.29+0x90/0x134
[   51.295126]                     [<c011486c>] get_vm_area_caller+0x3c/0x48
[   51.302245]                     [<c0114be0>] vmap+0x40/0x78
[   51.308094]                     [<c09442f0>] check_writebuffer_bugs+0x54/0x1a0
[   51.315669]                     [<c093eac0>] start_kernel+0x320/0x388
[   51.322423]                     [<80008074>] 0x80008074
[   51.327906]    INITIAL USE at:
[   51.331112]                    [<c06584e8>] _raw_spin_lock+0x28/0x38
[   51.337775]                    [<c011376c>] alloc_vmap_area.isra.28+0xb8/0x300
[   51.345352]                    [<c0113a44>] __get_vm_area_node.isra.29+0x90/0x134
[   51.353197]                    [<c011486c>] get_vm_area_caller+0x3c/0x48
[   51.360224]                    [<c0114be0>] vmap+0x40/0x78
[   51.365977]                    [<c09442f0>] check_writebuffer_bugs+0x54/0x1a0
[   51.373464]                    [<c093eac0>] start_kernel+0x320/0x388
[   51.380131]                    [<80008074>] 0x80008074
[   51.385517]  }
[   51.387260]  ... key      at: [<c0a66948>] vmap_area_lock+0x10/0x20
[   51.393841]  ... acquired at:
[   51.396945]    [<c00899ac>] lock_acquire+0x9c/0x104
[   51.402060]    [<c06584e8>] _raw_spin_lock+0x28/0x38
[   51.407266]    [<c01127fc>] find_vmap_area+0x10/0x6c
[   51.412478]    [<c0114960>] remove_vm_area+0x8/0x6c
[   51.417592]    [<c0114a7c>] __vunmap+0x20/0xf8
[   51.422252]    [<c001c350>] __arm_iounmap+0x10/0x18
[   51.427369]    [<bf017d08>] cpdma_ctlr_destroy+0xf0/0x114 [davinci_cpdma]
[   51.434487]    [<bf026294>] cpsw_remove+0x48/0x8c [ti_cpsw]
[   51.440336]    [<c03e62c8>] platform_drv_remove+0x18/0x1c
[   51.446000]    [<c03e4c44>] __device_release_driver+0x70/0xc8
[   51.452031]    [<c03e5458>] driver_detach+0xb4/0xb8
[   51.457147]    [<c03e4a6c>] bus_remove_driver+0x4c/0x90
[   51.462628]    [<c00b024c>] SyS_delete_module+0x10c/0x198
[   51.468289]    [<c000e580>] ret_fast_syscall+0x0/0x48
[   51.473584]
[   51.475140]
[   51.475140] stack backtrace:
[   51.479703] CPU: 0 PID: 1921 Comm: modprobe Not tainted 3.14.19-02124-g95c5b7b #308
[   51.487744] [<c0016090>] (unwind_backtrace) from [<c0012060>] (show_stack+0x10/0x14)
[   51.495865] [<c0012060>] (show_stack) from [<c0652a20>] (dump_stack+0x78/0x94)
[   51.503444] [<c0652a20>] (dump_stack) from [<c0086f18>] (check_usage+0x408/0x594)
[   51.511293] [<c0086f18>] (check_usage) from [<c00870f8>] (check_irq_usage+0x54/0xb0)
[   51.519416] [<c00870f8>] (check_irq_usage) from [<c0088724>] (__lock_acquire+0xe54/0x1b90)
[   51.528077] [<c0088724>] (__lock_acquire) from [<c00899ac>] (lock_acquire+0x9c/0x104)
[   51.536291] [<c00899ac>] (lock_acquire) from [<c06584e8>] (_raw_spin_lock+0x28/0x38)
[   51.544417] [<c06584e8>] (_raw_spin_lock) from [<c01127fc>] (find_vmap_area+0x10/0x6c)
[   51.552726] [<c01127fc>] (find_vmap_area) from [<c0114960>] (remove_vm_area+0x8/0x6c)
[   51.560935] [<c0114960>] (remove_vm_area) from [<c0114a7c>] (__vunmap+0x20/0xf8)
[   51.568693] [<c0114a7c>] (__vunmap) from [<c001c350>] (__arm_iounmap+0x10/0x18)
[   51.576362] [<c001c350>] (__arm_iounmap) from [<bf017d08>] (cpdma_ctlr_destroy+0xf0/0x114 [davinci_cpdma])
[   51.586494] [<bf017d08>] (cpdma_ctlr_destroy [davinci_cpdma]) from [<bf026294>] (cpsw_remove+0x48/0x8c [ti_cpsw])
[   51.597261] [<bf026294>] (cpsw_remove [ti_cpsw]) from [<c03e62c8>] (platform_drv_remove+0x18/0x1c)
[   51.606659] [<c03e62c8>] (platform_drv_remove) from [<c03e4c44>] (__device_release_driver+0x70/0xc8)
[   51.616237] [<c03e4c44>] (__device_release_driver) from [<c03e5458>] (driver_detach+0xb4/0xb8)
[   51.625264] [<c03e5458>] (driver_detach) from [<c03e4a6c>] (bus_remove_driver+0x4c/0x90)
[   51.633749] [<c03e4a6c>] (bus_remove_driver) from [<c00b024c>] (SyS_delete_module+0x10c/0x198)
[   51.642781] [<c00b024c>] (SyS_delete_module) from [<c000e580>] (ret_fast_syscall+0x0/0x48)

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:38 -04:00
Mugunthan V N
ff9538b1fc drivers: net: davinci_cpdma: remove kfree on objects allocated with devm_* apis
memories allocated with devm_* apis must not be freed with kfree apis,
so removing the kfree calls

Fixes: e194312854 ('drivers: net: davinci_cpdma: Convert kzalloc() to devm_kzalloc().')

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:37 -04:00
Prashant Sreedharan
2c7c9ea429 tg3: Add skb->xmit_more support
Ring TX doorbell only if xmit_more is not set or the queue is stopped.

Suggested-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:37 -04:00
Jiri Pirko
f76936d07c ipv4: fix nexthop attlen check in fib_nh_match
fib_nh_match does not match nexthops correctly. Example:

ip route add 172.16.10/24 nexthop via 192.168.122.12 dev eth0 \
                          nexthop via 192.168.122.13 dev eth0
ip route del 172.16.10/24 nexthop via 192.168.122.14 dev eth0 \
                          nexthop via 192.168.122.15 dev eth0

Del command is successful and route is removed. After this patch
applied, the route is correctly matched and result is:
RTNETLINK answers: No such process

Please consider this for stable trees as well.

Fixes: 4e902c5741 ("[IPv4]: FIB configuration using struct fib_config")
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:37 -04:00
Eric Dumazet
ad971f616a tcp: fix tcp_ack() performance problem
We worked hard to improve tcp_ack() performance, by not accessing
skb_shinfo() in fast path (cd7d8498c9 tcp: change tcp_skb_pcount()
location)

We still have one spurious access because of ACK timestamping,
added in commit e1c8a607b2 ("net-timestamp: ACK timestamp for
bytestreams")

By checking if sk_tsflags has SOF_TIMESTAMPING_TX_ACK set,
we can avoid two cache line misses for the common case.

While we are at it, add two prefetchw() :

One in tcp_ack() to bring skb at the head of write queue.

One in tcp_clean_rtx_queue() loop to bring following skb,
as we will delete skb from the write queue and dirty skb->next->prev.

Add a couple of [un]likely() clauses.

After this patch, tcp_ack() is no longer the most consuming
function in tcp stack.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Van Jacobson <vanj@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:59:37 -04:00
Yan, Zheng
0bc62284ee ceph: fix divide-by-zero in __validate_layout()
The 'stripe_unit' field is 64 bits, casting it to 32 bits can result zero.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-10-14 12:57:05 -07:00
Ilya Dryomov
792c3a9149 rbd: rbd workqueues need a resque worker
Need to use WQ_MEM_RECLAIM for our workqueues to prevent I/O lockups
under memory pressure - we sit on the memory reclaim path.

Cc: stable@vger.kernel.org # 3.17, needs backporting for 3.16
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Tested-by: Micha Krause <micha@krausam.de>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:57:05 -07:00
Ilya Dryomov
f9865f06f7 libceph: ceph-msgr workqueue needs a resque worker
Commit f363e45fd1 ("net/ceph: make ceph_msgr_wq non-reentrant")
effectively removed WQ_MEM_RECLAIM flag from ceph_msgr_wq.  This is
wrong - libceph is very much a memory reclaim path, so restore it.

Cc: stable@vger.kernel.org # needs backporting for < 3.12
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Tested-by: Micha Krause <micha@krausam.de>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:57:04 -07:00
Fabian Frederick
ab6c2c3ebe ceph: fix bool assignments
Fix some coccinelle warnings:
fs/ceph/caps.c:2400:6-10: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2401:6-15: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2402:6-17: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2403:6-22: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2404:6-22: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2405:6-19: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2440:4-20: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2469:3-16: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2490:2-18: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2519:3-7: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2549:3-12: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2575:2-6: WARNING: Assignment of bool to 0/1
fs/ceph/caps.c:2589:3-7: WARNING: Assignment of bool to 0/1

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-10-14 12:57:04 -07:00
Ilya Dryomov
25f897773b libceph: separate multiple ops with commas in debugfs output
For requests with multiple ops, separate ops with commas instead of \t,
which is a field separator here.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:57:03 -07:00
Ilya Dryomov
70b5bfa360 libceph: sync osd op definitions in rados.h
Bring in missing osd ops and strings, use macros to eliminate multiple
points of maintenance.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:57:02 -07:00
Fabian Frederick
eb179d3975 libceph: remove redundant declaration
ceph_release_page_vector was defined twice in libceph.h

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-10-14 12:57:02 -07:00
John Spray
14ed97033d ceph: additional debugfs output
MDS session state and client global ID is
useful instrumentation when testing.

Signed-off-by: John Spray <john.spray@redhat.com>
2014-10-14 12:57:01 -07:00
John Spray
a687ecaf50 ceph: export ceph_session_state_name function
...so that it can be used from the ceph debugfs
code when dumping session info.

Signed-off-by: John Spray <john.spray@redhat.com>
2014-10-14 12:56:50 -07:00
Yan, Zheng
b1ee94aa59 ceph: include the initial ACL in create/mkdir/mknod MDS requests
Current code set new file/directory's initial ACL in a non-atomic
manner.
Client first sends request to MDS to create new file/directory, then set
the initial ACL after the new file/directory is successfully created.

The fix is include the initial ACL in create/mkdir/mknod MDS requests.
So MDS can handle creating file/directory and setting the initial ACL in
one request.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:56:49 -07:00
Yan, Zheng
25e6bae356 ceph: use pagelist to present MDS request data
Current code uses page array to present MDS request data. Pages in the
array are allocated/freed by caller of ceph_mdsc_do_request(). If request
is interrupted, the pages can be freed while they are still being used by
the request message.

The fix is use pagelist to present MDS request data. Pagelist is
reference counted.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:56:49 -07:00
Yan, Zheng
e4339d28f6 libceph: reference counting pagelist
this allow pagelist to present data that may be sent multiple times.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14 12:56:48 -07:00
Yan, Zheng
0abb43dcac ceph: fix llistxattr on symlink
only regular file and directory have vxattrs.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-10-14 12:56:48 -07:00
John Spray
dbd0c8bf79 ceph: send client metadata to MDS
Implement version 2 of CEPH_MSG_CLIENT_SESSION syntax,
which includes additional client metadata to allow
the MDS to report on clients by user-sensible names
like hostname.

Signed-off-by: John Spray <john.spray@redhat.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
2014-10-14 12:56:47 -07:00
David S. Miller
14cee8e377 Merge branch 'isdn'
Tilman Schmidt says:

====================
Coverity patches for drivers/isdn

Here's a series of patches for the ISDN CAPI subsystem and the
Gigaset ISDN driver.
Patches 1 to 7 are specific fixes for Coverity warnings.
Patches 8 to 11 fix related problems with the handling of invalid
CAPI command codes I noticed while working on this.
Patch 12 fixes an unrelated problem I noticed during the subsequent
regression tests.
It would be great if these could still be merged.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:39 -04:00
Tilman Schmidt
86f8ef2c48 isdn/gigaset: fix usb_gigaset write_cmd result race
In usb_gigaset function gigaset_write_cmd(), the length field of
the command buffer structure could be cleared by the transmit
tasklet before it was used for the function's return value.
Fix by copying to a local variable before scheduling the tasklet.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:35 -04:00
Tilman Schmidt
340184b35a isdn/capi: don't return NULL from capi_cmd2str()
capi_cmd2str() is used in many places to build log messages.
None of them is prepared to handle NULL as a result.
Change the function to return printable string "INVALID_COMMAND"
instead.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:35 -04:00
Tilman Schmidt
2bf3a09ea5 isdn/capi: handle CAPI 2.0 message parser failures
Have callers of capi_cmsg2message and capi_message2cmsg handle
non-zero return values indicating failure.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:35 -04:00
Tilman Schmidt
5510ab1804 isdn/capi: prevent NULL pointer dereference on invalid CAPI command
An invalid CAPI 2.0 command/subcommand combination may retrieve a
NULL pointer from the cpars[] array which will later be dereferenced
by the parser routines.
Fix by adding NULL pointer checks in strategic places.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:34 -04:00
Tilman Schmidt
854d23b77a isdn/capi: refactor command/subcommand table accesses
Encapsulate accesses to the CAPI 2.0 command/subcommand name and
parameter tables in a single place in preparation for redesign.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:34 -04:00
Tilman Schmidt
5362247a42 isdn/capi: prevent index overrun from command_2_index()
The result of the function command_2_index() is used to index two
arrays mnames[] and cpars[] with max. index 0x4e but in its current
form that function can produce results up to 3*(0x9+0x9)+0x7f =
0xb5.
Fix by clamping all result values potentially overrunning the arrays
to zero which is already handled as an invalid value.

Re-spotted with Coverity.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:34 -04:00
Tilman Schmidt
9ea8aa8d50 isdn/capi: correct capi20_manufacturer argument type mismatch
Function capi20_manufacturer() is declared with unsigned int cmd
argument but called with unsigned long.
Fix by correcting the function prototype since the actual argument
is part of the user visible API.

Spotted with Coverity.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 15:05:34 -04:00