aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2015-04-11powerpc/pasemi: Move controller ops from ppc_md to controller_opsDaniel Axtens3-2/+10
This moves the PaSemi platform to use the pci_controller_ops structure rather than ppc_md for PCI controller operations. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc/powernv: Move controller ops from ppc_md to controller_opsDaniel Axtens4-4/+11
This moves the PowerNV platform to use the pci_controller_ops structure rather than ppc_md for PCI controller operations. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc/pseries: Move controller ops from ppc_md to controller_opsDaniel Axtens4-5/+15
This moves the pSeries platform to use the pci_controller_ops structure, rather than ppc_md for PCI controller operations. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc/powermac: Move controller ops from ppc_md to controller_opsDaniel Axtens3-9/+17
This moves the Power Mac platform to use the pci_controller_ops structure rather than ppc_md for PCI controller operations. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: dart_iommu: optionally populate controller_ops on initDaniel Axtens4-7/+16
If a pci_controller_ops struct is provided to iommu_init_early_dart, populate that with the DMA setup ops, rather than ppc_md. If NULL is provided, populate ppc_md as before. This also patches the call sites for Maple and Power Mac to pass NULL, so existing behaviour is preserved. The benefit of making this optional is that it means we don't have to change dart, Maple and Power Mac over to the controller_ops system in one fell swoop. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.reset_secondary_bus and shimDaniel Axtens2-6/+18
Add pci_controller_ops.reset_secondary_bus, shadowing ppc_md.pcibios_reset_secondary_bus. Add a shim, and changes the callsites to use the shim. Use pcibios_reset_secondary_bus_shim, as both pcibios_reset_secondary_bus and pci_reset_secondary_bus are already taken. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.window_alignment and shimDaniel Axtens2-9/+22
Add pci_controller_ops.window_alignment, shadowing ppc_md.pcibios_window_alignment. Add a shim, and changes the callsites to use the shim. Here, we use pci_window_alignment, as pcibios_window_alignment is already taken. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.enable_device_hook and shimDaniel Axtens2-3/+17
Add pci_controller_ops.enable_device_hook, shadowing ppc_md.pcibios_enable_device_hook. Add a shim, and changes the callsites to use the shim. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.probe_mode and shimDaniel Axtens5-11/+22
Add pci_controller_ops.probe_mode, shadowing ppc_md.pci_probe_mode. Add a shim, and changes the callsites to use the shim. We also need to move the probe mode defines to pci-bridge.h from pci.h. They are required by the shim in order to return a sensible default. Previously, the were defined in pci.h, but pci.h includes pci-bridge.h before the relevant #defines. This means the definitions are absent if pci.h is included before pci-bridge.h. This occurs in some drivers. So, move the definitons now, and move them back when we remove the shim. Anything that wants the defines would have had to include pci.h, and since pci.h includes pci-bridge.h, nothing will lose access to the defines. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.dma_bus_setup and shimDaniel Axtens2-2/+12
Add pci_controller_ops.dma_bus_setup, shadowing ppc_md.pci_dma_bus_setup. Add a shim, and changes the callsites to use the shim. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: Create pci_controller_ops.dma_dev_setup and shimDaniel Axtens2-2/+22
Introduces the pci_controller_ops structure. Add pci_controller_ops.dma_dev_setup, shadowing ppc_md.pci_dma_dev_setup. Add a shim, and change the callsites to use the shim. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: pcibios_enable_device_hook: return bool rather than intDaniel Axtens5-12/+12
pcibios_enable_device_hook returned an int. Every implementation returned either -EINVAL or 0. The return value wasn't propagated by the caller: any non-zero return value caused pcibios_enable_device to return -EINVAL itself. Therefore, make the hook return a bool. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc/powermac: move pmac_pci_probe_mode from setup.c to pci.cDaniel Axtens3-18/+21
Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-11powerpc: move find_and_init_phbs() to pSeries specific codeDaniel Axtens3-50/+47
Previously, find_and_init_phbs() was used in both PowerNV and pSeries setup. However, since RTAS support has been dropped from PowerNV, we can move it into a platform-specific file. Signed-off-by: Daniel Axtens <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-10powerpc: Drop return value of smp_ops->probe()Michael Ellerman8-29/+12
smp_ops->probe() is currently supposed to return the number of cpus in the system. The last actual usage of the value was removed in May 2007 in e147ec8f1808 "[POWERPC] Simplify smp_space_timers". We still passed the value around until June 2010 when even that was finally removed in c1aa687d499a "powerpc: Clean up obsolete code relating to decrementer and timebase". So drop that requirement, probe() now returns void, and update all implementations. Signed-off-by: Michael Ellerman <[email protected]>
2015-04-10powerpc/cell: Fix cell iommu after it_page_shift changesMichael Ellerman1-1/+1
The patch to add it_page_shift incorrectly changed the increment of uaddr to use it_page_shift, rather then (1 << it_page_shift). This broke booting on at least some Cell blades, as the iommu was basically non-functional. Fixes: 3a553170d35d ("powerpc/iommu: Add it_page_shift field to determine iommu page size") Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-04-10powerpc/cell: Fix crash in iic_setup_cpu() after per_cpu changesMichael Ellerman1-1/+1
The conversion from __get_cpu_var() to this_cpu_ptr() in iic_setup_cpu() is wrong. It causes an oops at boot. We need the per-cpu address of struct cpu_iic, not cpu_iic.regs->prio. Sparse noticed this, because we pass a non-iomem pointer to out_be64(), but we obviously don't check the sparse results often enough. Fixes: 69111bac42f5 ("powerpc: Replace __get_cpu_var uses") Signed-off-by: Michael Ellerman <[email protected]>
2015-04-10powerpc: Reword the "returning from prom_init" messageMichael Ellerman1-2/+2
We get way too many bug reports that say "the kernel is hung in prom_init", which stems from the fact that the last piece of output people see is "returning from prom_init". The kernel is almost never hung in prom_init(), it's just that it's crashed somewhere after prom_init() but prior to the console coming up. The existing message should give a clue to that, ie. "returning from" indicates that prom_init() has finished, but it doesn't seem to work. Let's try something different. This prints: Quiescing Open Firmware ... Booting Linux via __start() ... Which hopefully makes it clear that prom_init() is not the problem, and although __start() probably isn't either, it's at least the right place to begin looking. Signed-off-by: Michael Ellerman <[email protected]> Wistfully-Acked-by: Jeremy Kerr <[email protected]>
2015-04-10powerpc: Replace mem_init_done with slab_is_available()Michael Ellerman7-15/+10
We have a powerpc specific global called mem_init_done which is "set on boot once kmalloc can be called". But that's not *quite* true. We set it at the bottom of mem_init(), and rely on the fact that mm_init() calls kmem_cache_init() immediately after that, and nothing is running in parallel. So replace it with the generic and 100% correct slab_is_available(). Signed-off-by: Michael Ellerman <[email protected]>
2015-04-10powerpc: Fix compile errors with STRICT_MM_TYPECHECKS enabledMichael Ellerman8-14/+16
Signed-off-by: Aneesh Kumar K.V <[email protected]> [mpe: Fix the 32-bit code also] Signed-off-by: Michael Ellerman <[email protected]>
2015-04-07powerpc/mm: Change setbat() to take a pgprot_t rather than flagsMichael Ellerman2-2/+3
The callers of setbat() are actually passing a pgprot_t for the flags parameter. This doesn't matter unless STRICT_MM_TYPECHECKS is enabled. So we can turn that on without breaking the build, change setbat() to take a pgprot_t and have it convert it to an unsigned long internally. Signed-off-by: Michael Ellerman <[email protected]>
2015-04-07powerpc/mm: Remove duplicate declaration of setbat()Michael Ellerman1-3/+0
This is already declared in mmu_decl.h, so we don't need a second version in the C file. Signed-off-by: Michael Ellerman <[email protected]>
2015-04-07powerpc: Remove the celleb supportMichael Ellerman31-4580/+1
The celleb code has seen no actual development for ~7 years. We (maintainers) have no access to test hardware, and it is highly likely the code has bit-rotted. As far as we're aware the hardware was never widely available, and is certainly no longer available, and no one on the list has shown any interest in it over the years. So remove it. If anyone has one and cares please speak up. Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Acked-by: Jeremy Kerr <[email protected]>
2015-04-07powerpc/powernv: Remove powernv RTAS supportMichael Ellerman4-118/+19
The powernv code has some conditional support for running on bare metal machines that have no OPAL firmware, but provide RTAS. No released machines ever supported that, and even in the lab it was just a transitional hack in the days when OPAL was still being developed. So remove the code. Signed-off-by: Michael Ellerman <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Acked-by: Stewart Smith <[email protected]>
2015-04-07Merge branch 'next-remove-ldst' of ↵Michael Ellerman19-190/+139
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next
2015-04-07Merge branch 'next-eeh' of ↵Michael Ellerman28-1648/+1652
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next
2015-04-07Merge branch 'next' of ↵Michael Ellerman41-284/+981
git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next Freescale updates from Scott: "Highlights include BMan device tree nodes, an MSI erratum workaround, a couple minor performance improvements, config updates, and misc fixes/cleanup."
2015-03-31powerpc/corenet: enable CONFIG_I2C_MUX and CONFIG_I2C_MUX_PCA954xShengzhou Liu2-0/+4
By default we enable CONFIG_I2C_MUX and CONFIG_I2C_MUX_PCA954x, which are needed on T2080QDS, T4240QDS, B4860QDS, etc. Signed-off-by: Shengzhou Liu <[email protected]> [[email protected]: fixed subject line] Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc/t2080qds: fix rtc interruptShengzhou Liu1-1/+1
RTC interrupt uses IRQ11 on T2080QDS. Signed-off-by: Shengzhou Liu <[email protected]> [[email protected]: fix subject line] Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc/mpic: Remove WHOAMI readback after EOIBogdan Purcareata1-1/+0
After previous discussions regarding the subject [1][2], there's no clear explanation or reason why the call was needed in the first place. The sensible argument is some sort of synchronization between the CPU and the MPIC, which hasn't been pointed out precisely and is no longer required (at least on BookE platforms). The benefit of this change is saving a MMIO trap per interrupt when running in a KVM guest. [1] https://patchwork.ozlabs.org/patch/429098/ [2] https://patchwork.ozlabs.org/patch/433557/ Signed-off-by: Bogdan Purcareata <[email protected]> Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc/mpc85xx: call k(un)map_atomic rather than k(un)mapYanjiang Jin1-2/+2
The k(un)map function may be called in atomic context in the function map_and_flush(), so use k(un)map_atomic to replace it, else we would get the below warning during kdump: BUG: sleeping function called from invalid context at include/linux/highmem.h:58 in_atomic(): 1, irqs_disabled(): 1, pid: 736, name: sh INFO: lockdep is turned off. irq event stamp: 0 hardirqs last enabled at (0): [< (null)>] (null) hardirqs last disabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360 softirqs last enabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360 softirqs last disabled at (0): [< (null)>] (null) CPU: 1 PID: 736 Comm: sh Tainted: G D W 3.10.62-ltsi-WR6.0.0.0_standard #2 Call Trace: [c0000000f47cf120] [c00000000000b150] .show_stack+0x170/0x290 (unreliable) [c0000000f47cf210] [c000000000b71334] .dump_stack+0x28/0x3c [c0000000f47cf280] [c0000000000bb5d8] .__might_sleep+0x1a8/0x270 [c0000000f47cf310] [c0000000000440cc] .map_and_flush+0x4c/0xc0 [c0000000f47cf390] [c0000000000441cc] .mpc85xx_smp_machine_kexec+0x8c/0xec0 [c0000000f47cf420] [c00000000002ae00] .machine_kexec+0x60/0x90 [c0000000f47cf4b0] [c00000000010957c] .crash_kexec+0x8c/0x100 [c0000000f47cf6a0] [c000000000015df8] .die+0x348/0x450 [c0000000f47cf740] [c00000000002f3a0] .bad_page_fault+0xe0/0x130 [c0000000f47cf7c0] [c00000000001f3e4] storage_fault_common+0x40/0x44 Signed-off-by: Yanjiang Jin <[email protected]> [[email protected]: fix subject line] Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc: don't export static symbolJulia Lawall1-25/+0
The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ type T; identifier f; @@ static T f (...) { ... } @@ identifier r.f; declarer name EXPORT_SYMBOL; @@ -EXPORT_SYMBOL(f); // </smpl> Furthermore, the function is never used, so its definition is dropped as well. Signed-off-by: Julia Lawall <[email protected]> Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc: book3e_64: fix the align size for paca_structKevin Hao1-2/+2
All the cache line size of the current book3e 64bit SoCs are 64 bytes. So we should use this size to align the member of paca_struct. This only change the paca_struct's members which are private to book3e CPUs, and should not have any effect to book3s ones. With this, we save 192 bytes. Also change it to __aligned(size) since it is preferred over __attribute__((aligned(size))). Before: /* size: 1920, cachelines: 30, members: 46 */ /* sum members: 1667, holes: 6, sum holes: 141 */ /* padding: 112 */ After: /* size: 1728, cachelines: 27, members: 46 */ /* sum members: 1667, holes: 4, sum holes: 13 */ /* padding: 48 */ Signed-off-by: Kevin Hao <[email protected]> Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc/fsl-booke: Add T4080 SVR valueMadalin Bucur1-0/+1
Signed-off-by: Madalin Bucur <[email protected]> Signed-off-by: Scott Wood <[email protected]>
2015-03-31powerpc32/chrp: fix section mismatch warningLEROY Christophe1-1/+1
This patch fixes a section mismatch warning WARNING: vmlinux.o(.text+0x213b6): Section mismatch in reference from the function chrp_init_early() to the variable .init.data:boot_command_line The function chrp_init_early() references the variable __initdata boot_command_line. This is often because chrp_init_early lacks a __initdata annotation or the annotation of boot_command_line is wrong. Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-31powerpc/powernv: handle OPAL_SUCCESS return in opal_sensor_readCédric Le Goater1-12/+20
Currently, when a sensor value is read, the kernel calls OPAL, which in turn builds a message for the FSP, and waits for a message back. The new device tree for OPAL sensors [1] adds new sensors that can be read synchronously (core temperatures for instance) and that don't need to wait for a response. This patch modifies the opal call to accept an OPAL_SUCCESS return value and cover the case above. [1] https://lists.ozlabs.org/pipermail/skiboot/2015-March/000639.html Signed-off-by: Cédric Le Goater <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-31powerpc/powernv: convert codes returned by OPAL callsCédric Le Goater3-2/+25
OPAL has its own list of return codes. The patch provides a translation of such codes in errnos for the opal_sensor_read call, and possibly others if needed. Signed-off-by: Cédric Le Goater <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-31powerpc: Use bool function return values of true/false not 1/0Joe Perches4-6/+6
Use the normal return values for bool functions Signed-off-by: Joe Perches <[email protected]> Acked-by: Benjamin Herrenschmidt <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-31powerpc/powernv: Don't map M64 segments using M32DTGavin Shan1-1/+2
If M64 has been supported, the prefetchable 64-bits memory resources shouldn't be mapped to the corresponding PE# via M32DT. Unfortunately, we're doing that in pnv_ioda_setup_pe_seg() wrongly. The issue was introduced by commit 262af55 ("powerpc/powernv: Enable M64 aperatus for PHB3"). The patch fixes the issue by simply skipping M64 resources when updating to M32DT. Cc: <[email protected]> # v3.17+ Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2015-03-31powerpc/eeh: Fix PE#0 check in eeh_add_to_parent_pe()Gavin Shan1-6/+7
The function eeh_add_parent_pe() is used to create a PE or add one edev to its parent PE. Current code checks if PE#0 is valid for the later case. Actually, we should validate PE#0 for both cases when EEH core regards PE#0 as invalid one (without flag EEH_VALID_PE_ZERO). Otherwise, not all EEH devices can be added to its parent PE#0 for EEH on P7IOC. The patch fixes the issue by validating PE#0 for the two cases. So far, we don't have PE#0 for EEH on P7IOC, but it will show up when we enable M64 for P7IOC. The patch also makes the error message more meaningful. Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2015-03-28selftests/powerpc: Add a test of the switch_endian() syscallMichael Ellerman6-1/+214
This adds a test of the switch_endian() syscall we added in the previous commit. We test it by calling the endian switch syscall, and then executing some code in the other endian to check everything went as expected. That code checks registers we expect to be maintained are. If the endian switch failed to happen that code sequence will be illegal and cause the test to abort. We then switch back to the original endian, do the same checks and finally write a success message and exit(0). Signed-off-by: Michael Ellerman <[email protected]>
2015-03-28powerpc: Add a proper syscall for switching endiannessMichael Ellerman8-1/+30
We currently have a "special" syscall for switching endianness. This is syscall number 0x1ebe, which is handled explicitly in the 64-bit syscall exception entry. That has a few problems, firstly the syscall number is outside of the usual range, which confuses various tools. For example strace doesn't recognise the syscall at all. Secondly it's handled explicitly as a special case in the syscall exception entry, which is complicated enough without it. As a first step toward removing the special syscall, we need to add a regular syscall that implements the same functionality. The logic is simple, it simply toggles the MSR_LE bit in the userspace MSR. This is the same as the special syscall, with the caveat that the special syscall clobbers fewer registers. This version clobbers r9-r12, XER, CTR, and CR0-1,5-7. Signed-off-by: Michael Ellerman <[email protected]>
2015-03-28powerpc/pseries: Simplify check for suspendability during suspend/migrationTyrel Datwyler3-20/+17
During suspend/migration operation we must wait for the VASI state reported by the hypervisor to become Suspending prior to making the ibm,suspend-me RTAS call. Calling routines to rtas_ibm_supend_me() pass a vasi_state variable that exposes the VASI state to the caller. This is unnecessary as the caller only really cares about the following three conditions; if there is an error we should bailout, success indicating we have suspended and woken back up so proceed to device tree update, or we are not suspendable yet so try calling rtas_ibm_suspend_me again shortly. This patch removes the extraneous vasi_state variable and simply uses the return code to communicate how to proceed. We either succeed, fail, or get -EAGAIN in which case we sleep for a second before trying to call rtas_ibm_suspend_me again. The behaviour of ppc_rtas() remains the same, but migrate_store() now returns the propogated error code on failure. Previously -1 was returned from migrate_store() in the failure case which equates to -EPERM and was clearly wrong. Signed-off-by: Tyrel Datwyler <[email protected]> Cc: Nathan Fontenont <[email protected]> Cc: Cyril Bur <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-27cxl: Fix a typo in ABI documentationPhilippe Bergheaud1-1/+1
Fix the attribute name of the configuration record class ID. Signed-off-by: Philippe Bergheaud <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-27powerpc/perf: add missing put_cpu_var in power_pmu_event_initJan Stancek1-1/+3
One path in power_pmu_event_init() calls get_cpu_var(), but is missing matching call to put_cpu_var(), which causes preemption imbalance and crash in user-space: Page fault in user mode with in_atomic() = 1 mm = c000001fefa5a280 NIP = 3fff9bf2cae0 MSR = 900000014280f032 Oops: Weird page fault, sig: 11 [#23] SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: <snip> CPU: 43 PID: 10285 Comm: a.out Tainted: G D 4.0.0-rc5+ #1 task: c000001fe82c9200 ti: c000001fe835c000 task.ti: c000001fe835c000 NIP: 00003fff9bf2cae0 LR: 00003fff9bee4898 CTR: 00003fff9bf2cae0 REGS: c000001fe835fea0 TRAP: 0401 Tainted: G D (4.0.0-rc5+) MSR: 900000014280f032 <SF,HV,VEC,VSX,EE,PR,FP,ME,IR,DR,RI> CR: 22000028 XER: 00000000 CFAR: 00003fff9bee4894 SOFTE: 1 GPR00: 00003fff9bee494c 00003fffe01c2ee0 00003fff9c084410 0000000010020068 GPR04: 0000000000000000 0000000000000002 0000000000000008 0000000000000001 GPR08: 0000000000000001 00003fff9c074a30 00003fff9bf2cae0 00003fff9bf2cd70 GPR12: 0000000052000022 00003fff9c10b700 NIP [00003fff9bf2cae0] 0x3fff9bf2cae0 LR [00003fff9bee4898] 0x3fff9bee4898 Call Trace: ---[ end trace 5d3d952b5d4185d4 ]--- BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:41 in_atomic(): 1, irqs_disabled(): 0, pid: 10285, name: a.out INFO: lockdep is turned off. CPU: 43 PID: 10285 Comm: a.out Tainted: G D 4.0.0-rc5+ #1 Call Trace: [c000001fe835f990] [c00000000089c014] .dump_stack+0x98/0xd4 (unreliable) [c000001fe835fa10] [c0000000000e4138] .___might_sleep+0x1d8/0x2e0 [c000001fe835faa0] [c000000000888da8] .down_read+0x38/0x110 [c000001fe835fb30] [c0000000000bf2f4] .exit_signals+0x24/0x160 [c000001fe835fbc0] [c0000000000abde0] .do_exit+0xd0/0xe70 [c000001fe835fcb0] [c00000000001f4c4] .die+0x304/0x450 [c000001fe835fd60] [c00000000088e1f4] .do_page_fault+0x2d4/0x900 [c000001fe835fe30] [c000000000008664] handle_page_fault+0x10/0x30 note: a.out[10285] exited with preempt_count 1 Reproducer: #include <stdio.h> #include <unistd.h> #include <syscall.h> #include <sys/types.h> #include <sys/stat.h> #include <linux/perf_event.h> #include <linux/hw_breakpoint.h> static struct perf_event_attr event = { .type = PERF_TYPE_RAW, .size = sizeof(struct perf_event_attr), .sample_type = PERF_SAMPLE_BRANCH_STACK, .branch_sample_type = PERF_SAMPLE_BRANCH_ANY_RETURN, }; int main() { syscall(__NR_perf_event_open, &event, 0, -1, -1, 0); } Signed-off-by: Jan Stancek <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-26Merge branch 'next-misc' of ↵Michael Ellerman13-168/+71
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into test Merge miscellaneous bits from benh. Fix a minor conflict with OpalMessageType changing names to opal_msg_type.
2015-03-26powerpc/powernv: Avoid explicit endian conversions while parsing device treePreeti U Murthy1-15/+20
We currently read the information about idle states from the device tree, so as to find out the CPU idle states supported by the platform. Use the of_property_read/count_xxx() APIs, which handle endian conversions for us, and mean we don't need any endian annotations in the code. Signed-off-by: Preeti U Murthy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-26ps3: Fix trivial typos in comment and debug messageYannick Guerrini1-2/+2
Change 'prosessor' to 'processor' Change 'set_inteval' to 'set_interval' Signed-off-by: Yannick Guerrini <[email protected]> Acked-by: Geoff Levand <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-26powerpc/mm: Free string after creating kmem cacheYanjiang Jin1-0/+1
kmem_cache_create()->kmem_cache_create_memcg()->kstrdup() allocates new space and copys name's content, so it is safe to free name memory after calling kmem_cache_create(). Else kmemleak will report the below warning: unreferenced object 0xc0000000f9002160 (size 16): comm "swapper/0", pid 0, jiffies 4294892296 (age 1386.640s) hex dump (first 16 bytes): 70 67 74 61 62 6c 65 2d 32 5e 39 00 de ad be ef pgtable-2^9..... backtrace: [<c0000000004e03ec>] .kvasprintf+0x5c/0xa0 [<c0000000004e045c>] .kasprintf+0x2c/0x50 [<c00000000002e36c>] .pgtable_cache_add+0xac/0x100 [<c00000000002e3e4>] .pgtable_cache_init+0x24/0x80 [<c000000000c6c67c>] .start_kernel+0x228/0x4c8 [<c000000000000594>] .start_here_common+0x24/0x90 Signed-off-by: Yanjiang Jin <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2015-03-25powerpc/powernv: Add OPAL message notifier unregister functionNeelesh Gupta2-0/+9
Provide an unregister interface for the opal message notifiers to be called when not needed like during driver unload/remove. Signed-off-by: Neelesh Gupta <[email protected]> Reviewed-by: Vasant Hegde <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.