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2016-10-05tools lib traceevent: Fix kbuffer_read_at_offset()Namhyung Kim
When it's called with an offset less than or equal to the first event, it'll return a garbage value since the data is not initialized. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20161001101700.29146-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-05timekeeping: Fix __ktime_get_fast_ns() regressionJohn Stultz
In commit 27727df240c7 ("Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING"), I changed the logic to open-code the timekeeping_get_ns() function, but I forgot to include the unit conversion from cycles to nanoseconds, breaking the function's output, which impacts users like perf. This results in bogus perf timestamps like: swapper 0 [000] 253.427536: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.426573: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.426687: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.426800: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.426905: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.427022: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.427127: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.427239: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.427346: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 254.427463: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 255.426572: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) Instead of more reasonable expected timestamps like: swapper 0 [000] 39.953768: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.064839: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.175956: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.287103: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.398217: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.509324: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.620437: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.731546: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.842654: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 40.953772: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) swapper 0 [000] 41.064881: 111111111 cpu-clock: ffffffff810a0de6 native_safe_halt+0x6 ([kernel.kallsyms]) Add the proper use of timekeeping_delta_to_ns() to convert the cycle delta to nanoseconds as needed. Thanks to Brendan and Alexei for finding this quickly after the v4.8 release. Unfortunately the problematic commit has landed in some -stable trees so they'll need this fix as well. Many apologies for this mistake. I'll be looking to add a perf-clock sanity test to the kselftest timers tests soon. Fixes: 27727df240c7 "timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING" Reported-by: Brendan Gregg <bgregg@netflix.com> Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com> Tested-and-reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable <stable@vger.kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1475636148-26539-1-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-05drm/prime: Take a ref on the drm_dev when exporting a dma_bufChris Wilson
dma_buf may live a long time, longer than the last direct user of the driver. We already hold a reference to the owner module (that prevents the object code from disappearing), but there is no reference to the drm_dev - so the pointers to the driver backend themselves may vanish. v2: Resist temptation to fix the bug in armada_gem.c not setting the correct flags on the exported dma-buf (it should pass the flags through and not be arbitrarily setting O_RDWR). Use a common wrapper for exporting the dmabuf and acquiring the reference to the drm_device. Testcase: igt/vgem_basic/unload Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Petri Latvala <petri.latvala@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Tested-by: Petri Latvala <petri.latvala@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161005122145.1507-2-chris@chris-wilson.co.uk
2016-10-05drm/prime: Pass the right module owner through to dma_buf_export()Chris Wilson
dma_buf_export() adds a reference to the owning module to the dmabuf (to prevent the driver from being unloaded whilst a third party still refers to the dmabuf). However, drm_gem_prime_export() was passing its own THIS_MODULE (i.e. drm.ko) rather than the driver. Extract the right owner from the device->fops instead. v2: Use C99 initializers to zero out unset elements of dma_buf_export_info v3: Extract the right module from dev->fops. Testcase: igt/vgem_basic/unload Reported-by: Petri Latvala <petri.latvala@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Petri Latvala <petri.latvala@intel.com> Cc: Christian König <christian.koenig@amd.com> Cc: stable@vger.kernel.org Tested-by: Petri Latvala <petri.latvala@intel.com> Reviewed-by: Petri Latvala <petri.latvala@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161005122145.1507-1-chris@chris-wilson.co.uk
2016-10-05drm/bridge: Call drm_connector_cleanup directlyMarek Vasut
Remove the unnecessary wrapper functions around drm_connector_cleanup(). Signed-off-by: Marek Vasut <marex@denx.de> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161004222331.7200-1-marex@denx.de
2016-10-05drm: simple_kms_helper: Add prepare_fb and cleanup_fb hooksMarek Vasut
Add .prepare_fb and .cleanup_fb plane hooks into the drm_simple_kms. These can be used by drivers to call ie. the drm_fb_cma_setup_fence() helper. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161002170124.6099-1-marex@denx.de
2016-10-05drm: Release resources with a safer functionChristophe JAILLET
We should use 'ida_simple_remove()' instead of 'ida_remove()' when freeing resources allocated with 'ida_simple_get()'. This as been spotted with the following coccinelle script which tries to detect missing 'ida_simple_remove()' call in error handling paths. /////////////// @@ expression x; identifier l; @@ * x = ida_simple_get(...); ... if (...) { ... } ... if (...) { ... goto l; } ... * l: ... when != ida_simple_remove(...); Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1475388082-12656-1-git-send-email-christophe.jaillet@wanadoo.fr
2016-10-05DT: irqchip: renesas-irqc: document R8A7743/5 supportSergei Shtylyov
Renesas RZ/G SoC have the R-Car gen2 compatible IRQC interrupt controllers. Document RZ/G1[ME] (also known as R8A774[35]) SoC bindings. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
2016-10-05dt-bindings: Add Keith&Koep vendor prefixMarek Vasut
Add vendor prefix for Keith&Koep GmbH , http://keith-koep.com/en/ Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org> [robh: fix alphabetizing] Signed-off-by: Rob Herring <robh@kernel.org>
2016-10-05perf intel-pt: Fix MTC timestamp calculation for large MTC periodsAdrian Hunter
The MTC packet provides a 8-bit slice of CTC which is related to TSC by the TMA packet, however the TMA packet only provides the lower 16 bits of CTC. If mtc_shift > 8 then some of the MTC bits are not in the CTC provided by the TMA packet. Fix-up the last_mtc calculated from the TMA packet by copying the missing bits from the current MTC assuming the least difference between the two, and that the current MTC comes after last_mtc. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.3+ Link: http://lkml.kernel.org/r/1475062896-22274-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-05perf intel-pt: Fix estimated timestamps for cycle-accurate modeAdrian Hunter
In cycle-accurate mode, timestamps can be calculated from CYC packets. The decoder also estimates timestamps based on the number of instructions since the last timestamp. For that to work in cycle-accurate mode, the instruction count needs to be reset to zero when a timestamp is calculated from a CYC packet, but that wasn't happening, so fix it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: stable@vger.kernel.org # v4.3+ Link: http://lkml.kernel.org/r/1475062896-22274-1-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-05perf uretprobe ppc64le: Fix probe locationRavi Bangoria
Perf uretprobe probes on GEP(Global Entry Point) which fails to record all function calls via LEP(Local Entry Point). Fix that by probing on LEP. Objdump: 00000000100005f0 <doit>: 100005f0: 02 10 40 3c lis r2,4098 100005f4: 00 7f 42 38 addi r2,r2,32512 100005f8: a6 02 08 7c mflr r0 100005fc: 10 00 01 f8 std r0,16(r1) 10000600: f8 ff e1 fb std r31,-8(r1) Before applying patch: $ cat /sys/kernel/debug/tracing/uprobe_events r:probe_uprobe_test/doit /home/ravi/uprobe_test:0x00000000000005f0 After applying patch: $ cat /sys/kernel/debug/tracing/uprobe_events r:probe_uprobe_test/doit /home/ravi/uprobe_test:0x00000000000005f8 This is not the case with kretprobes because the kernel itself finds LEP and probes on it. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1475576865-6562-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-05irqchip/metag-ext: Improve function-level documentationJulia Lawall
Drop the variable irq which ceased to be a parameter. Issue detected using Coccinelle (http://coccinelle.lip6.fr/) Fixes: bd0b9ac405e1 ("genirq: Remove irq argument from irq flow handlers"). Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: James Hogan <james.hogan@imgtec.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kernel-janitors@vger.kernel.org Cc: linux-metag@vger.kernel.org Link: http://lkml.kernel.org/r/1475351192-27079-15-git-send-email-Julia.Lawall@lip6.fr Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-05irqchip/vic: Improve function-level documentationJulia Lawall
The associated function, vic_init_cascaded, has never had a variable irq_start. Issue detected using Coccinelle (http://coccinelle.lip6.fr/) Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: kernel-janitors@vger.kernel.org Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1475351192-27079-14-git-send-email-Julia.Lawall@lip6.fr Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-05x86/vmware: Skip lapic calibration on VMwareRenat Valiullin
In a virtualized environment the APIC timer calibration can go wrong when the host is overcommitted or the guest is running nested. This results in the APIC timers operating at an incorrect frequency. Since VMware supports a mechanism to retrieve the local APIC frequency we can ask the hypervisor for it and skip the APIC calibration loop. Signed-off-by: Renat Valiullin <rvaliullin@vmware.com> Acked-by: Alok N Kataria <akataria@vmware.com> Cc: virtualization@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20161004201148.GA1421@uu64vm Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-05x86/syscalls: Remove bash-isms in syscall table generatorsylvain.bertrand@gmail.com
Signed-off-by: Sylvain BERTRAND <sylvain.bertrand@gmail.com> Link: http://lkml.kernel.org/r/20160929162234.GA29592@freedom Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-05xen/x86: Initialize per_cpu(xen_vcpu, 0) a little earlierBoris Ostrovsky
xen_cpuhp_setup() calls mutex_lock() which, when CONFIG_DEBUG_MUTEXES is defined, ends up calling xen_save_fl(). That routine expects per_cpu(xen_vcpu, 0) to be already initialized. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-05x86/pkeys: Update documentationDave Hansen
There are a few items that have gotten stale in the protection keys documentation. The config option description only applied to the execute-only support and is not accurate for the current code. There was also a typo with the number of system calls. I also wanted to call out that pkey_set() is not a kernel-provided facility, and where to find an implementation. Signed-off-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: linux-doc@vger.kernel.org Cc: corbet@lwn.net Link: http://lkml.kernel.org/r/20161004163857.71E0D6F6@viggo.jf.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-04xfs: allocate delayed extents in CoW forkDarrick J. Wong
Modify the writepage handler to find and convert pending delalloc extents to real allocations. Furthermore, when we're doing non-cow writes to a part of a file that already has a CoW reservation (the cowextsz hint that we set up in a subsequent patch facilitates this), promote the write to copy-on-write so that the entire extent can get written out as a single extent on disk, thereby reducing post-CoW fragmentation. Christoph moved the CoW support code in _map_blocks to a separate helper function, refactored other functions, and reduced the number of CoW fork lookups, so I merged those changes here to reduce churn. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: support allocating delayed extents in CoW forkDarrick J. Wong
Modify xfs_bmap_add_extent_delay_real() so that we can convert delayed allocation extents in the CoW fork to real allocations, and wire this up all the way back to xfs_iomap_write_allocate(). In a subsequent patch, we'll modify the writepage handler to call this. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: create delalloc extents in CoW forkDarrick J. Wong
Wire up iomap_begin to detect shared extents and create delayed allocation extents in the CoW fork: 1) Check if we already have an extent in the COW fork for the area. If so nothing to do, we can move along. 2) Look up block number for the current extent, and if there is none it's not shared move along. 3) Unshare the current extent as far as we are going to write into it. For this we avoid an additional COW fork lookup and use the information we set aside in step 1) above. 4) Goto 1) unless we've covered the whole range. Last but not least, this updates the xfs_reflink_reserve_cow_range calling convention to pass a byte offset and length, as that is what both callers expect anyway. This patch has been refactored considerably as part of the iomap transition. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: support bmapping delalloc extents in the CoW forkDarrick J. Wong
Allow the creation of delayed allocation extents in the CoW fork. In a subsequent patch we'll wire up iomap_begin to actually do this via reflink helper functions. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: introduce the CoW forkDarrick J. Wong
Introduce a new in-core fork for storing copy-on-write delalloc reservations and allocated extents that are in the process of being written out. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: don't allow reflinked dir/dev/fifo/socket/pipe filesDarrick J. Wong
Only non-rt files can be reflinked, so check that when we load an inode. Also, don't leak the attr fork if there's a failure. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: add reflink feature flag to geometryDarrick J. Wong
Report the reflink feature in the XFS geometry so that xfs_info and friends know the filesystem has this feature. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: define tracepoints for reflink activitiesDarrick J. Wong
Define all the tracepoints we need to inspect the runtime operation of reflink/dedupe/copy-on-write. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-04xfs: return work remaining at the end of a bunmapi operationDarrick J. Wong
Return the range of file blocks that bunmapi didn't free. This hint is used by CoW and reflink to figure out what part of an extent actually got freed so that it can set up the appropriate atomic remapping of just the freed range. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-05async_pq_val: fix DMA memory leakJustin Maggard
Add missing dmaengine_unmap_put(), so we don't OOM during RAID6 sync. Fixes: 1786b943dad0 ("async_pq_val: convert to dmaengine_unmap_data") Signed-off-by: Justin Maggard <jmaggard@netgear.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-04Merge branch 'mlxsw-fixes'David S. Miller
Jiri Pirko says: ==================== mlxsw: Couple of fixes Couple of fixes from Yotam. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04mlxsw: switchx2: Fix misuse of hard_header_lenYotam Gigi
In order to specify that the mlxsw switchx2 driver needs additional headroom for packets, there have been use of the hard_header_len field of the netdevice struct. This commit changes that to use needed_headroom instead, as this is the correct way to do that. Fixes: 31557f0f9755 ("mlxsw: Introduce Mellanox SwitchX-2 ASIC support") Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04mlxsw: spectrum: Fix misuse of hard_header_lenYotam Gigi
In order to specify that the mlxsw spectrum driver needs additional headroom for packets, there have been use of the hard_header_len field of the netdevice struct. This commit changes that to use needed_headroom instead, as this is the correct way to do that. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04Merge tag 'mac80211-next-for-davem-2016-10-04' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== This time around, we have * Neighbor Awareness Networking (NAN) APIs * a fix for a previous patch that caused memory corruption in wireless extensions key settings * beacon rate configuration for AP and mesh * memory limits for mac80211's internal TXQs * a (fairly involved) fix for the TXQ vs. crypto problems * direct cfg80211 driver API for WEP keys This also pulls in net-next to fix the merge conflicts, see the merge commit for more details. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-05MIPS: SEAD3: Parse memsize in DT shimPaul Burton
Parse the memsize argument provided by the bootloader in the DT shim code, allowing the user to override it on the command line. This places all of the DT manipulation code into sead3-dtshim.c. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Rob Herring <robh@kernel.org> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14058/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Use generic restart-poweroff driverPaul Burton
Remove the custom platform code to restart when instructed to power off, instead relying upon the generic restart-poweroff driver probed via DT to do the same thing. Remove also the halt implementation, which is incorrect. The generic MIPS version will hang the system as halt should. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14057/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Reset via generic syscon-reboot driver & DTPaul Burton
Remove the SEAD3 implementation of _machine_restart & instead make use of the generic syscon-reboot driver probed via device tree. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14056/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Use register-bit-led driver via DT for LEDsPaul Burton
Probe a driver for the PLED & FLED LEDs found on the SEAD3 board using the register-bit-led driver via device tree, rather than a custom driver via platform code. Enable support for the register-bit-led driver & its prerequisite syscon in sead3_defconfig. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14054/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Probe parallel flash via DTPaul Burton
Probe the system parallel flash using device tree rather than platform code, in order to reduce the amount of the latter. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14053/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05USB: host: ehci-sead3: Remove SEAD-3 EHCI codePaul Burton
The SEAD-3 board is now probing its EHCI controller using the generic EHCI driver & its generic-ehci device tree binding. Remove the unused SEAD-3 specific EHCI code. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: linux-usb@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14052/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Probe EHCI controller using DTPaul Burton
Probe the SEAD3 EHCI controller using the generic-ehci driver & device tree rather than platform code, in order to reduce the amount of the latter. Now that no devices probed from platform code require interrupts, remove the retrieval of the IRQ domain & sead3int.h. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14051/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Probe ethernet controller using DTPaul Burton
Probe the smsc911x ethernet controller using device tree rather than platform code, reducing the amount of the latter. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14050/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Use generic ns16550a earlycon supportPaul Burton
Stop selecting SYS_HAS_EARLY_PRINTK & remove the custom support for early output to the ns16550a UARTs, instead relying upon generic ns16550a earlycon support. This reduces the amount of platform code required for SEAD3 without losing any functionality. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14049/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Probe UARTs using DTPaul Burton
Probe the UARTs on SEAD3 boards using device tree rather than platform code, in order to reduce the amount of the latter. This requires that CONFIG_SERIAL_OF_PLATFORM be enabled, so enable it in sead3_defconfig. The SEAD3 DT shim code is extended to read bootloader environment variables to determine the appropriate UART & mode for kernel console output & set the stdout-path property of the chosen node accordingly. In contrast to the old platform code, which appears to have only ever set "console=ttyS0,38400n8r" with the code in console_config never having an effect, this will honor the "yamontty" environment variable to select between the 2 UARTs on the board and then check the "modetty0" or "modetty1" variable as appropriate to determine the UART configuration. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Probe interrupt controllers using DTPaul Burton
Probe the CPU interrupt controller & optional Global Interrupt Controller (GIC) using devicetree rather than platform code. Because the bootloader on SEAD3 does not provide a device tree to the kernel & the device tree is always built in, we patch out the GIC node during boot if we detect that a GIC is not present in the system. The appropriate IRQ domain is discovered by platform code setting up device IRQ numbers temporarily. It will be removed by further patches which move the devices towards being probed via device tree. No behavioural change is intended by this patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14047/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: SEAD3: Split obj-y entries across linesPaul Burton
Split the obj-y entries for SEAD3 onto a line each, so that they're more independent & can be modified more clearly by later commits. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Jacek Anaszewski <j.anaszewski@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14046/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: pm-cps: Generate idle state entry code when CPUs are onlinedPaul Burton
The MIPS Coherent Processing System (CPS) power management code has previously generated code used to enter low power idle states once during boot for all CPUs. This has the drawback that if a CPU is present in the system but not being used (for example due to the maxcpus kernel parameter) then we encounter problems due to not having probed that CPU for information about its type & properties. The result of this is that we generate entry code which is both unused, potentially entirely invalid & likely to be unsuitable for the CPU in question anyway. Avoid this by generating idle state entry code only when a CPU is brought online. This way we only ever generate code for CPUs that we know we've probed the properties of, and that will actually be used. [ralf@linux-mips.org: Resolve merge conflict.] Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Adam Buchbinder <adam.buchbinder@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/14259/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: kvm: Audit and remove any unnecessary uses of module.hPaul Gortmaker
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. In the case of kvm where it is modular, we can extend that to also include files that are building basic support functionality but not related to loading or registering the final module; such files also have no need whatsoever for module.h The advantage in removing such instances is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h was the source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each instance for the presence of either and replace as needed. In this case, we did not need to add either to any files. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: James Hogan <james.hogan@imgtec.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14036/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: pci: Audit and remove any unnecessary uses of module.hPaul Gortmaker
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. The advantage in doing so is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h was the source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each obj-y/bool instance for the presence of either and replace as needed. We also needed to remove the no-op MODULE_DEVICE_TABLE usage in several instances to permit removal of the module.h include. The files in these instances were all controlled by bool Kconfig. In one instance, module_param was being used so we transition the module.h include onto a moduleparam.h include. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14035/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: lib: Audit and remove any unnecessary uses of module.hPaul Gortmaker
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. The advantage in doing so is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h was the source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each obj-y/bool instance for the presence of either and replace as needed. The compiler.h additions are for an implict presence of the "notrace" which module.h brought in but export.h does not. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14034/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: mm: Audit and remove any unnecessary uses of module.hPaul Gortmaker
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. The advantage in doing so is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h was the source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each obj-y/bool instance for the presence of either and replace as needed. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14033/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-10-05MIPS: kernel: Audit and remove any unnecessary uses of module.hPaul Gortmaker
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. The advantage in doing so is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h was the source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each obj-y/bool instance for the presence of either and replace as needed. In the case of the n32/o32 files, we have to get rid of a couple no-op MODULE_ tags to facilitate the module.h removal. They piggy back off the fs/ elf binary support, which is also a bool Kconfig. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14032/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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