- 16 Apr, 2019 14 commits
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Peter Zijlstra authored
Icelake extended the general counters to 8, even when SMT is enabled. However only a (large) subset of the events can be used on all 8 counters. The events that can or cannot be used on all counters are organized in ranges. A lot of scheduler constraints are required to handle all this. To avoid blowing up the tables add event code ranges to the constraint tables, and a new inline function to match them. Originally-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> # developer hat on Signed-off-by:
Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> # maintainer hat on Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: acme@kernel.org Cc: jolsa@kernel.org Link: https://lkml.kernel.org/r/20190402194509.2832-8-kan.liang@linux.intel.comSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Andi Kleen authored
With adaptive PEBS the CPU can directly supply the LBR information, so we don't need to read it again. But the LBRs still need to be enabled. Add a special count to the cpuc that distinguishes these two cases, and avoid reading the LBRs unnecessarily when PEBS is active. Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: acme@kernel.org Cc: jolsa@kernel.org Link: https://lkml.kernel.org/r/20190402194509.2832-7-kan.liang@linux.intel.comSigned-off-by:
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Kan Liang authored
Adaptive PEBS is a new way to report PEBS sampling information. Instead of a fixed size record for all PEBS events it allows to configure the PEBS record to only include the information needed. Events can then opt in to use such an extended record, or stay with a basic record which only contains the IP. The major new feature is to support LBRs in PEBS record. Besides normal LBR, this allows (much faster) large PEBS, while still supporting callstacks through callstack LBR. So essentially a lot of profiling can now be done without frequent interrupts, dropping the overhead significantly. The main requirement still is to use a period, and not use frequency mode, because frequency mode requires reevaluating the frequency on each overflow. The floating point state (XMM) is also supported, which allows efficient profiling of FP function arguments. Introduce specific drain function to handle variable length records. Use a new callback to parse the new record format, and also handle the STATUS field now being at a different offset. Add code to set up the configuration register. Since there is only a single register, all events either get the full super set of all events, or only the basic record. Originally-by:
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Kan Liang authored
The drain_pebs() could be called twice in a short period for auto-reload event in pmu::read(). The intel_pmu_save_and_restart_reload() should be called to update the event->count. This case should also be handled on Icelake. Extract the code for later reuse. Signed-off-by:
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Andi Kleen authored
Extract some code related to memory profiling from the PEBS record parser into separate functions. It can be reused by the upcoming adaptive PEBS parser. No functional changes. Rename intel_hsw_weight to intel_get_tsx_weight, and intel_hsw_transaction to intel_get_tsx_transaction. Because the input is not the hsw pebs format anymore. Signed-off-by:
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Kan Liang authored
Starting from Icelake, XMM registers can be collected in PEBS record. But current code only output the pt_regs. Add a new struct x86_perf_regs for both pt_regs and xmm_regs. The xmm_regs will be used later to keep a pointer to PEBS record which has XMM information. XMM registers are 128 bit. To simplify the code, they are handled like two different registers, which means setting two bits in the register bitmap. This also allows only sampling the lower 64bit bits in XMM. The index of XMM registers starts from 32. There are 16 XMM registers. So all reserved space for regs are used. Remove REG_RESERVED. Add PERF_REG_X86_XMM_MAX, which stands for the max number of all x86 regs including both GPRs and XMM. Add REG_NOSUPPORT for 32bit to exclude unsupported registers. Previous platforms can not collect XMM information in PEBS record. Adding pebs_no_xmm_regs to indicate the unsupported platforms. The common code still validates the supported registers. However, it cannot check model specific registers, e.g. XMM. Add extra check in x86_pmu_hw_config() to reject invalid config of regs_user and regs_intr. The regs_user never supports XMM collection. The regs_intr only supports XMM collection when sampling PEBS event on icelake and later platforms. Originally-by:
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Stephane Eranian authored
This patch provides guarantee to the sysadmin that when TFA is disabled, no PMU event is using PMC3 when the echo command returns. Vice-Versa, when TFA is enabled, PMU can use PMC3 immediately (to eliminate possible multiplexing). $ perf stat -a -I 1000 --no-merge -e branches,branches,branches,branches 1.000123979 125,768,725,208 branches 1.000562520 125,631,000,456 branches 1.000942898 125,487,114,291 branches 1.001333316 125,323,363,620 branches 2.004721306 125,514,968,546 branches 2.005114560 125,511,110,861 branches 2.005482722 125,510,132,724 branches 2.005851245 125,508,967,086 branches 3.006323475 125,166,570,648 branches 3.006709247 125,165,650,056 branches 3.007086605 125,164,639,142 branches 3.007459298 125,164,402,912 branches 4.007922698 125,045,577,140 branches 4.008310775 125,046,804,324 branches 4.008670814 125,048,265,111 branches 4.009039251 125,048,677,611 branches 5.009503373 125,122,240,217 branches 5.009897067 125,122,450,517 branches Then on another connection, sysadmin does: $ echo 1 >/sys/devices/cpu/allow_tsx_force_abort Then perf stat adjusts the events immediately: 5.010286029 125,121,393,483 branches 5.010646308 125,120,556,786 branches 6.011113588 124,963,351,832 branches 6.011510331 124,964,267,566 branches 6.011889913 124,964,829,130 branches 6.012262996 124,965,841,156 branches 7.012708299 124,419,832,234 branches [79.69%] 7.012847908 124,416,363,853 branches [79.73%] 7.013225462 124,400,723,712 branches [79.73%] 7.013598191 124,376,154,434 branches [79.70%] 8.014089834 124,250,862,693 branches [74.98%] 8.014481363 124,267,539,139 branches [74.94%] 8.014856006 124,259,519,786 branches [74.98%] 8.014980848 124,225,457,969 branches [75.04%] 9.015464576 124,204,235,423 branches [75.03%] 9.015858587 124,204,988,490 branches [75.04%] 9.016243680 124,220,092,486 branches [74.99%] 9.016620104 124,231,260,146 branches [74.94%] And vice-versa if the syadmin does: $ echo 0 >/sys/devices/cpu/allow_tsx_force_abort Events are again spread over the 4 counters: 10.017096277 124,276,230,565 branches [74.96%] 10.017237209 124,228,062,171 branches [75.03%] 10.017478637 124,178,780,626 branches [75.03%] 10.017853402 124,198,316,177 branches [75.03%] 11.018334423 124,602,418,933 branches [85.40%] 11.018722584 124,602,921,320 branches [85.42%] 11.019095621 124,603,956,093 branches [85.42%] 11.019467742 124,595,273,783 branches [85.42%] 12.019945736 125,110,114,864 branches 12.020330764 125,109,334,472 branches 12.020688740 125,109,818,865 branches 12.021054020 125,108,594,014 branches 13.021516774 125,109,164,018 branches 13.021903640 125,108,794,510 branches 13.022270770 125,107,756,978 branches 13.022630819 125,109,380,471 branches 14.023114989 125,133,140,817 branches 14.023501880 125,133,785,858 branches 14.023868339 125,133,852,700 branches Signed-off-by:Stephane Eranian <eranian@google.com> Signed-off-by:
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Stephane Eranian authored
This patch add perf_pmu_resched() a global function that can be called to force rescheduling of events for a given PMU. The function locks both cpuctx and task_ctx internally. This will be used by a subsequent patch. Signed-off-by:
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Ingo Molnar authored
Signed-off-by: -
Kan Liang authored
PEBS_REGS used as mask for the supported registers for large PEBS. However, the mask cannot filter the sample_regs_user/sample_regs_intr correctly. (1ULL << PERF_REG_X86_*) should be used to replace PERF_REG_X86_*, which is only the index. Rename PEBS_REGS to PEBS_GP_REGS, because the mask is only for general purpose registers. Signed-off-by:
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Alexander Shishkin authored
The following commit: 1627314f ("perf: Suppress AUX/OVERWRITE records") has an unintended side-effect of also suppressing all AUX records with no flags and non-zero size, so all the regular records in the full trace mode. This breaks some use cases for people. Fix this by restoring "regular" AUX records. Reported-by:
Ben Gainey <Ben.Gainey@arm.com> Tested-by:
Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by:
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Alexander Shishkin authored
The following recent commit: c60f83b8 ("perf, pt, coresight: Fix address filters for vmas with non-zero offset") changes the address filtering logic to communicate filter ranges to the PMU driver via a single address range object, instead of having the driver do the final bit of math. That change forgets to take into account kernel filters, which are not calculated the same way as DSO based filters. Fix that by passing the kernel filters the same way as file-based filters. This doesn't require any additional changes in the drivers. Reported-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
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Ingo Molnar authored
Signed-off-by: -
Masami Hiramatsu authored
The following commit introduced a bug in one of our error paths: 819319fc ("kprobes: Return error if we fail to reuse kprobe instead of BUG_ON()") it missed to handle the return value of kprobe_optready() as error-value. In reality, the kprobe_optready() returns a bool result, so "true" case must be passed instead of 0. This causes some errors on kprobe boot-time selftests on ARM: [ ] Beginning kprobe tests... [ ] Probe ARM code [ ] kprobe [ ] kretprobe [ ] ARM instruction simulation [ ] Check decoding tables [ ] Run test cases [ ] FAIL: test_case_handler not run [ ] FAIL: Test andge r10, r11, r14, asr r7 [ ] FAIL: Scenario 11 ... [ ] FAIL: Scenario 7 [ ] Total instruction simulation tests=1631, pass=1433 fail=198 [ ] kprobe tests failed This can happen if an optimized probe is unregistered and next kprobe is registered on same address until the previous probe is not reclaimed. If this happens, a hidden aggregated probe may be kept in memory, and no new kprobe can probe same address. Also, in that case register_kprobe() will return "1" instead of minus error value, which can mislead caller logic. Signed-off-by:
Masami Hiramatsu <mhiramat@kernel.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S . Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Naveen N . Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # v5.0+ Fixes: 819319fc ("kprobes: Return error if we fail to reuse kprobe instead of BUG_ON()") Link: http://lkml.kernel.org/r/155530808559.32517.539898325433642204.stgit@devnote2Signed-off-by:
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- 15 Apr, 2019 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "I debated holding this back for the v5.2 merge window due to the size of the "zero-key" changes, but affected users would benefit from having the fixes sooner. It did not make sense to change the zero-key semantic in isolation for the "secure-erase" command, but instead include it for all security commands. The short background on the need for these changes is that some NVDIMM platforms enable security with a default zero-key rather than let the OS specify the initial key. This makes the security enabling that landed in v5.0 unusable for some users. Summary: - Compatibility fix for nvdimm-security implementations with a default zero-key. - Miscellaneous small fixes for out-of-bound accesses, cleanup after initialization failures, and missing debug messages" * tag 'libnvdimm-fixes-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: tools/testing/nvdimm: Retain security state after overwrite libnvdimm/pmem: fix a possible OOB access when read and write pmem libnvdimm/security, acpi/nfit: unify zero-key for all security commands libnvdimm/security: provide fix for secure-erase to use zero-key libnvdimm/btt: Fix a kmemdup failure check libnvdimm/namespace: Fix a potential NULL pointer dereference acpi/nfit: Always dump _DSM output payload -
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull fsdax fix from Dan Williams: "A single filesystem-dax fix. It has been lingering in -next for a long while and there are no other fsdax fixes on the horizon: - Avoid a crash scenario with architectures like powerpc that require 'pgtable_deposit' for the zero page" * tag 'fsdax-fix-5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: fs/dax: Deposit pagetable even when installing zero page
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- 14 Apr, 2019 6 commits
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Linus Torvalds authored
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Linus Torvalds authored
Merge page ref overflow branch. Jann Horn reported that he can overflow the page ref count with sufficient memory (and a filesystem that is intentionally extremely slow). Admittedly it's not exactly easy. To have more than four billion references to a page requires a minimum of 32GB of kernel memory just for the pointers to the pages, much less any metadata to keep track of those pointers. Jann needed a total of 140GB of memory and a specially crafted filesystem that leaves all reads pending (in order to not ever free the page references and just keep adding more). Still, we have a fairly straightforward way to limit the two obvious user-controllable sources of page references: direct-IO like page references gotten through get_user_pages(), and the splice pipe page duplication. So let's just do that. * branch page-refs: fs: prevent page refcount overflow in pipe_buf_get mm: prevent get_user_pages() from overflowing page refcount mm: add 'try_get_page()' helper function mm: make page ref count overflow check tighter and more explicit
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Matthew Wilcox authored
Change pipe_buf_get() to return a bool indicating whether it succeeded in raising the refcount of the page (if the thing in the pipe is a page). This removes another mechanism for overflowing the page refcount. All callers converted to handle a failure. Reported-by:
Jann Horn <jannh@google.com> Signed-off-by:
Matthew Wilcox <willy@infradead.org> Cc: stable@kernel.org Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
If the page refcount wraps around past zero, it will be freed while there are still four billion references to it. One of the possible avenues for an attacker to try to make this happen is by doing direct IO on a page multiple times. This patch makes get_user_pages() refuse to take a new page reference if there are already more than two billion references to the page. Reported-by:
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Linus Torvalds authored
This is the same as the traditional 'get_page()' function, but instead of unconditionally incrementing the reference count of the page, it only does so if the count was "safe". It returns whether the reference count was incremented (and is marked __must_check, since the caller obviously has to be aware of it). Also like 'get_page()', you can't use this function unless you already had a reference to the page. The intent is that you can use this exactly like get_page(), but in situations where you want to limit the maximum reference count. The code currently does an unconditional WARN_ON_ONCE() if we ever hit the reference count issues (either zero or negative), as a notification that the conditional non-increment actually happened. NOTE! The count access for the "safety" check is inherently racy, but that doesn't matter since the buffer we use is basically half the range of the reference count (ie we look at the sign of the count). Acked-by:
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Linus Torvalds authored
We have a VM_BUG_ON() to check that the page reference count doesn't underflow (or get close to overflow) by checking the sign of the count. That's all fine, but we actually want to allow people to use a "get page ref unless it's already very high" helper function, and we want that one to use the sign of the page ref (without triggering this VM_BUG_ON). Change the VM_BUG_ON to only check for small underflows (or _very_ close to overflowing), and ignore overflows which have strayed into negative territory. Acked-by:
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- 13 Apr, 2019 14 commits
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "Set of fixes that should go into this round. This pull is larger than I'd like at this time, but there's really no specific reason for that. Some are fixes for issues that went into this merge window, others are not. Anyway, this contains: - Hardware queue limiting for virtio-blk/scsi (Dongli) - Multi-page bvec fixes for lightnvm pblk - Multi-bio dio error fix (Jason) - Remove the cache hint from the io_uring tool side, since we didn't move forward with that (me) - Make io_uring SETUP_SQPOLL root restricted (me) - Fix leak of page in error handling for pc requests (Jérôme) - Fix BFQ regression introduced in this merge window (Paolo) - Fix break logic for bio segment iteration (Ming) - Fix NVMe cancel request error handling (Ming) - NVMe pull request with two fixes (Christoph): - fix the initial CSN for nvme-fc (James) - handle log page offsets properly in the target (Keith)" * tag 'for-linus-20190412' of git://git.kernel.dk/linux-block: block: fix the return errno for direct IO nvmet: fix discover log page when offsets are used nvme-fc: correct csn initialization and increments on error block: do not leak memory in bio_copy_user_iov() lightnvm: pblk: fix crash in pblk_end_partial_read due to multipage bvecs nvme: cancel request synchronously blk-mq: introduce blk_mq_complete_request_sync() scsi: virtio_scsi: limit number of hw queues by nr_cpu_ids virtio-blk: limit number of hw queues by nr_cpu_ids block, bfq: fix use after free in bfq_bfqq_expire io_uring: restrict IORING_SETUP_SQPOLL to root tools/io_uring: remove IOCQE_FLAG_CACHEHIT block: don't use for-inside-for in bio_for_each_segment_all -
git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
Pull NFS client bugfixes from Trond Myklebust: "Highlights include: Stable fix: - Fix a deadlock in close() due to incorrect draining of RDMA queues Bugfixes: - Revert "SUNRPC: Micro-optimise when the task is known not to be sleeping" as it is causing stack overflows - Fix a regression where NFSv4 getacl and fs_locations stopped working - Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. - Fix xfstests failures due to incorrect copy_file_range() return values" * tag 'nfs-for-5.1-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: Revert "SUNRPC: Micro-optimise when the task is known not to be sleeping" NFSv4.1 fix incorrect return value in copy_file_range xprtrdma: Fix helper that drains the transport NFS: Fix handling of reply page vector NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. -
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fix from James Bottomley: "One obvious fix for a ciostor data corruption on error bug" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fixes from Stephen Boyd: "Here's more than a handful of clk driver fixes for changes that came in during the merge window: - Fix the AT91 sama5d2 programmable clk prescaler formula - A bunch of Amlogic meson clk driver fixes for the VPU clks - A DMI quirk for Intel's Bay Trail SoC's driver to properly mark pmc clks as critical only when really needed - Stop overwriting CLK_SET_RATE_PARENT flag in mediatek's clk gate implementation - Use the right structure to test for a frequency table in i.MX's PLL_1416x driver" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: imx: Fix PLL_1416X not rounding rates clk: mediatek: fix clk-gate flag setting platform/x86: pmc_atom: Drop __initconst on dmi table clk: x86: Add system specific quirk to mark clocks as critical clk: meson: vid-pll-div: remove warning and return 0 on invalid config clk: meson: pll: fix rounding and setting a rate that matches precisely clk: meson-g12a: fix VPU clock parents clk: meson: g12a: fix VPU clock muxes mask clk: meson-gxbb: round the vdec dividers to closest clk: at91: fix programmable clock for sama5d2 -
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fixes from Bjorn Helgaas: - Add a DMA alias quirk for another Marvell SATA device (Andre Przywara) - Fix a pciehp regression that broke safe removal of devices (Sergey Miroshnichenko) * tag 'pci-v5.1-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: pciehp: Ignore Link State Changes after powering off a slot PCI: Add function 1 DMA alias quirk for Marvell 9170 SATA controller
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "A minor build fix for 64-bit FLATMEM configs. A fix for a boot failure on 32-bit powermacs. My commit to fix CLOCK_MONOTONIC across Y2038 broke the 32-bit VDSO on 64-bit kernels, ie. compat mode, which is only used on big endian. The rewrite of the SLB code we merged in 4.20 missed the fact that the 0x380 exception is also used with the Radix MMU to report out of range accesses. This could lead to an oops if userspace tried to read from addresses outside the user or kernel range. Thanks to: Aneesh Kumar K.V, Christophe Leroy, Larry Finger, Nicholas Piggin" * tag 'powerpc-5.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm: Define MAX_PHYSMEM_BITS for all 64-bit configs powerpc/64s/radix: Fix radix segment exception handling powerpc/vdso32: fix CLOCK_MONOTONIC on PPC64 powerpc/32: Fix early boot failure with RTAS built-in
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: "The main thing is a fix to our FUTEX_WAKE_OP implementation which was unbelievably broken, but did actually work for the one scenario that GLIBC used to use. Summary: - Fix stack unwinding so we ignore user stacks - Fix ftrace module PLT trampoline initialisation checks - Fix terminally broken implementation of FUTEX_WAKE_OP atomics" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value arm64: backtrace: Don't bother trying to unwind the userspace stack arm64/ftrace: fix inadvertent BUG() in trampoline check
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Fix typos in user-visible resctrl parameters, and also fix assembly constraint bugs that might result in miscompilation" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm: Use stricter assembly constraints in bitops x86/resctrl: Fix typos in the mba_sc mount option
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fix from Ingo Molnar: "Fix the alarm_timer_remaining() return value" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: alarmtimer: Return correct remaining time
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fix from Ingo Molnar: "Fix a NULL pointer dereference crash in certain environments" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Do not re-read ->h_load_next during hierarchical load calculation
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Six kernel side fixes: three related to NMI handling on AMD systems, a race fix, a kexec initialization fix and a PEBS sampling fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix perf_event_disable_inatomic() race x86/perf/amd: Remove need to check "running" bit in NMI handler x86/perf/amd: Resolve NMI latency issues for active PMCs x86/perf/amd: Resolve race condition when disabling PMC perf/x86/intel: Initialize TFA MSR perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fix from Ingo Molnar: "Fixes a crash when accessing /proc/lockdep" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/lockdep: Zap lock classes even with lock debugging disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Ingo Molnar: "Two genirq fixes, plus an irqchip driver error handling fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Respect IRQCHIP_SKIP_SET_WAKE in irq_chip_set_wake_parent() genirq: Initialize request_mutex if CONFIG_SPARSE_IRQ=n irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core fixes from Ingo Molnar: "Fix an objtool warning plus fix a u64_to_user_ptr() macro expansion bug" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Add rewind_stack_do_exit() to the noreturn list linux/kernel.h: Use parentheses around argument in u64_to_user_ptr()
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- 12 Apr, 2019 4 commits
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Leonard Crestez authored
Code which initializes the "clk_init_data.ops" checks pll->rate_table before that field is ever assigned to so it always picks "clk_pll1416x_min_ops". This breaks dynamic rate rounding for features such as cpufreq. Fix by checking pll_clk->rate_table instead, here pll_clk refers to the constant initialization data coming from per-soc clk driver. Signed-off-by:
Leonard Crestez <leonard.crestez@nxp.com> Fixes: 8646d4dc ("clk: imx: Add PLLs driver for imx8mm soc") Signed-off-by:
Stephen Boyd <sboyd@kernel.org>
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Weiyi Lu authored
CLK_SET_RATE_PARENT would be dropped. Merge two flag setting together to correct the error. Fixes: 5a1cc4c2 ("clk: mediatek: Add flags to mtk_gate") Cc: <stable@vger.kernel.org> Signed-off-by:
Weiyi Lu <weiyi.lu@mediatek.com> Reviewed-by:
Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by:
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fixes from Christoph Hellwig: "Fix a sparc64 sun4v_pci regression introduced in this merged window, and a dma-debug stracktrace regression from the big refactor last merge window" * tag 'dma-mapping-5.1-1' of git://git.infradead.org/users/hch/dma-mapping: dma-debug: only skip one stackframe entry sparc64/pci_sun4v: fix ATU checks for large DMA masks
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull IOMMU fix from Joerg Roedel: "Fix an AMD IOMMU issue where the driver didn't correctly setup the exclusion range in the hardware registers, resulting in exclusion ranges being one page too big. This can cause data corruption of the address of that last page is used by DMA operations" * tag 'iommu-fix-v5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Set exclusion range correctly
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