- 06 Mar, 2018 2 commits
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Ingo Molnar authored
Merge tag 'perf-core-for-mingo-4.17-20180305' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: - Be more robust when drawing arrows in the annotation TUI, avoiding a segfault when jump instructions have as a target addresses in functions other that the one currently being annotated. The full fix will come in the following days, when jumping to other functions will work as call instructions (Arnaldo Carvalho de Melo) - Allow asking for the maximum allowed sample rate in 'top' and 'record', i.e. 'perf record -F max' will read the kernel.perf_event_max_sample_rate sysctl and use it (Arnaldo Carvalho de Melo) - When the user specifies a freq above kernel.perf_event_max_sample_rate, Throttle it down to that max freq, and warn the user about it, add as well --strict-freq so that the previous behaviour of not starting the session when the desired freq can't be used can be selected (Arnaldo Carvalho de Melo) - Find 'call' instruction target symbol at parsing time, used so far in the TUI, part of the infrastructure changes that will end up allowing for jumps to navigate to other functions, just like 'call' instructions. (Arnaldo Carvalho de Melo) - Use xyarray dimensions to iterate fds in 'perf stat' (Andi Kleen) - Ignore threads for which the current user hasn't permissions when enabling system-wide --per-thread (Jin Yao) - Fix some backtrace perf test cases to use 'perf record' + 'perf script' instead, till 'perf trace' starts using ordered_events or equivalent to avoid symbol resolving artifacts due to reordering of PERF_RECORD_MMAP events (Jiri Olsa) - Fix crash in 'perf record' pipe mode, it needs to allocate the ID array even for a single event, unlike non-pipe mode (Jiri Olsa) - Make annoying fallback message on older kernels with newer 'perf top' binaries trying to use overwrite mode and that not being present in the older kernels (Kan Liang) - Switch last users of old APIs to the newer perf_mmap__read_event() one, then discard those old mmap read forward APIs (Kan Liang) - Fix the usage on the 'perf kallsyms' man page (Sangwon Hong) - Simplify cgroup arguments when tracking multiple events (weiping zhang) Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Ingo Molnar authored
Signed-off-by:
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- 05 Mar, 2018 23 commits
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Kan Liang authored
Discards legacy interfaces perf_evlist__mmap_read_forward(), perf_evlist__mmap_read() and perf_evlist__mmap_consume(). No tools use them. Signed-off-by:
Kan Liang <kan.liang@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1519945751-37786-14-git-send-email-kan.liang@linux.intel.comSigned-off-by:
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Kan Liang authored
The perf test 'task-exit' still use the legacy interface. No functional change. Committer notes: Testing it: # perf test exit 21: Number of exit events of a simple workload : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'switch-tracking' still use the legacy interface. No functional change. Committer testing: # perf test switch 32: Track with sched_switch : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'sw-clock' still use the legacy interface. No functional change. Committer testing: # perf test clock 22: Software clock events period values : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'time-to-tsc' still use the legacy interface. No functional change. Commiter notes: Testing it: # perf test tsc 57: Convert perf time to TSC : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'perf-record' still use the legacy interface. No functional change. Committer notes: Testing it: # perf test PERF_RECORD 8: PERF_RECORD_* events & perf_sample fields : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'syscalls:sys_enter_openat event fields' still use the legacy interface. No functional change. Committer notes: Testing it: # perf test sys_enter_openat 15: syscalls:sys_enter_openat event fields : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'mmap-basic' still use the legacy interface. No functional change. Committer notes: Testing it: # perf test "mmap interface" 4: Read samples using the mmap interface : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'keep tracking' still use the legacy interface. No functional change. Committer testing: # perf test tracking 25: Use a dummy software event to keep tracking : Ok # Signed-off-by:
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Kan Liang authored
The perf test 'object code reading' still use the legacy interface. No functional change. Committer notes: Testing: # perf test reading 23: Object code reading: Ok # Signed-off-by:
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Kan Liang authored
The perf test 'bpf' still use the legacy interface. No functional change. Committer notes: Tested with: # perf test bpf 39: BPF filter : 39.1: Basic BPF filtering : Ok 39.2: BPF pinning : Ok 39.3: BPF prologue generation : Ok 39.4: BPF relocation checker : Ok # Signed-off-by:
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Kan Liang authored
The perf python binding still use the legacy interface. No functional change. Committer notes: Tested before and after with: [root@jouet perf]# export PYTHONPATH=/tmp/build/perf/python [root@jouet perf]# tools/perf/python/twatch.py cpu: 0, pid: 1183, tid: 6293 { type: exit, pid: 1183, ppid: 1183, tid: 6293, ptid: 6293, time: 17886646588257} cpu: 2, pid: 13820, tid: 13820 { type: fork, pid: 13820, ppid: 13820, tid: 6306, ptid: 13820, time: 17886869099529} cpu: 1, pid: 13820, tid: 6306 { type: comm, pid: 13820, tid: 6306, comm: TaskSchedulerFo } ^CTraceback (most recent call last): File "tools/perf/python/twatch.py", line 68, in <module> main() File "tools/perf/python/twatch.py", line 40, in main evlist.poll(timeout = -1) KeyboardInterrupt [root@jouet perf]# No problems found. Signed-off-by: -
Kan Liang authored
The 'perf trace' utility still use the legacy interface. Switch to the new perf_mmap__read_event() interface. No functional change. Signed-off-by:
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Kan Liang authored
The perf kvm still use the legacy interface. Switch to the new perf_mmap__read_event() interface for perf kvm. No functional change. Committer notes: Tested before and after running: # perf kvm stat record On a machine with a kvm guest, then used: # perf kvm stat report Before/after results match and look like: # perf kvm stat record -a sleep 5 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 2.132 MB perf.data.guest (1828 samples) ] # perf kvm stat report Analyze events for all VMs, all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time IO_INSTRUCTION 258 40.06% 0.08% 3.51us 122.54us 14.87us (+- 6.76%) MSR_WRITE 178 27.64% 0.01% 0.47us 6.34us 2.18us (+- 4.80%) EPT_MISCONFIG 148 22.98% 0.03% 3.76us 65.60us 11.22us (+- 8.14%) HLT 47 7.30% 99.88% 181.69us 249988.06us 102061.36us (+-13.49%) PAUSE_INSTRUCTION 5 0.78% 0.00% 0.38us 0.79us 0.47us (+-17.05%) MSR_READ 4 0.62% 0.00% 1.14us 3.33us 2.67us (+-19.35%) EXTERNAL_INTERRUPT 2 0.31% 0.00% 2.15us 2.17us 2.16us (+- 0.30%) PENDING_INTERRUPT 1 0.16% 0.00% 2.56us 2.56us 2.56us (+- 0.00%) PREEMPTION_TIMER 1 0.16% 0.00% 3.21us 3.21us 3.21us (+- 0.00%) Total Samples:644, Total events handled time:4802790.72us. # Signed-off-by: -
Jiri Olsa authored
Currently we can crash perf record when running in pipe mode, like: $ perf record ls | perf report # To display the perf.data header info, please use --header/--header-only options. # perf: Segmentation fault Error: The - file has no samples! The callstack of the crash is: 0x0000000000515242 in perf_event__synthesize_event_update_name 3513 ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]); (gdb) bt #0 0x0000000000515242 in perf_event__synthesize_event_update_name #1 0x00000000005158a4 in perf_event__synthesize_extra_attr #2 0x0000000000443347 in record__synthesize #3 0x00000000004438e3 in __cmd_record #4 0x000000000044514e in cmd_record #5 0x00000000004cbc95 in run_builtin #6 0x00000000004cbf02 in handle_internal_command #7 0x00000000004cc054 in run_argv #8 0x00000000004cc422 in main The reason of the crash is that the evsel does not have ids array allocated and the pipe's synthesize code tries to access it. We don't force evsel ids allocation when we have single event, because it's not needed. However we need it when we are in pipe mode even for single event as a key for evsel update event. Fixing this by forcing evsel ids allocation event for single event, when we are in pipe mode. Signed-off-by:Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180302161354.30192-1-jolsa@kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
So that we do it just once, not everytime we press enter or -> on a 'call' instruction line. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-uysyojl1e6nm94amzzzs08tf@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
# perf record -F 200000 sleep 1 warning: Maximum frequency rate (15,000 Hz) exceeded, throttling from 200,000 Hz to 15,000 Hz. The limit can be raised via /proc/sys/kernel/perf_event_max_sample_rate. The kernel will lower it when perf's interrupts take too long. Use --strict-freq to disable this throttling, refusing to record. [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.019 MB perf.data (15 samples) ] # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 15000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 For those wanting that it fails if the desired frequency can't be used: # perf record --strict-freq -F 200000 sleep 1 error: Maximum frequency rate (15,000 Hz) exceeded. Please use -F freq option with a lower value or consider tweaking /proc/sys/kernel/perf_event_max_sample_rate. # Suggested-by: -
Arnaldo Carvalho de Melo authored
Add the handy '-F max' shortcut, just introduced to 'perf record', to reading and using the kernel.perf_event_max_sample_rate value as the user supplied sampling frequency: Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-hz04f296zccknnb5at06a6q0@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
The '--stdio' 'perf top' UI shows it, so lets remove this UI difference and show it too in '--tui', will be useful for 'perf top --tui -F max'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-n3wd8n395uo4y9irst29pjic@git.kernel.orgSigned-off-by:
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Arnaldo Carvalho de Melo authored
Add the handy '-F max' shortcut to reading and using the kernel.perf_event_max_sample_rate value as the user supplied sampling frequency: # perf record -F max sleep 1 info: Using a maximum frequency rate of 15,000 Hz [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.019 MB perf.data (14 samples) ] # sysctl kernel.perf_event_max_sample_rate kernel.perf_event_max_sample_rate = 15000 # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 15000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 # perf record -F 10 sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.019 MB perf.data (4 samples) ] # perf evlist -v cycles:ppp: size: 112, { sample_period, sample_freq }: 10, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 # Suggested-by: -
Jiri Olsa authored
Because the test is no longer using perf trace but perf record instead. Signed-off-by:
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Jiri Olsa authored
There's a problem with relying on backtrace data from 'perf trace' the way the trace+probe_libc_inet_pton does. This test inserts uprobe within ping binary and checks that it gets its sample using 'perf trace'. It also checks it gets proper backtrace from sample and that's where the issue is. The 'perf trace' does not sort events (by definition) so it can happen that it processes the event sample before the ping binary memory map event. This can (very rarely) happen as proved by this events dump output (from custom added debug output): ... 7680/7680: [0x7f4e29718000(0x204000) @ 0 fd:00 33611321 4230892504]: r-xp /usr/lib64/libdl-2.17.so 7680/7680: [0x7f4e29502000(0x216000) @ 0 fd:00 33617257 2606846872]: r-xp /usr/lib64/libz.so.1.2.7 (IP, 0x2): 7680/7680: 0x7f4e29c2ed60 period: 1 addr: 0 7680/7680: [0x564842ef0000(0x233000) @ 0 fd:00 83 1989280200]: r-xp /usr/bin/ping 7680/7680: [0x7f4e2aca2000(0x224000) @ 0 fd:00 33611308 1219144940]: r-xp /usr/lib64/ld-2.17.so ... In this case 'perf trace' fails to resolve the last callchain IP (within the ping binary) because it does not know about the ping binary memory map yet and the test fails like this: PING ::1(::1) 56 data bytes 64 bytes from ::1: icmp_seq=1 ttl=64 time=0.037 ms --- ::1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.037/0.037/0.037/0.000 ms 0.000 probe_libc:inet_pton:(7f4e29c2ed60)) __GI___inet_pton (/usr/lib64/libc-2.17.so) getaddrinfo (/usr/lib64/libc-2.17.so) [0] ([unknown]) FAIL: expected backtrace entry 8 ".*\(.*/bin/ping.*\)$" got "[0] ([unknown])" Switching the test to use 'perf record' and 'perf script' instead of 'perf trace'. Signed-off-by:
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Arnaldo Carvalho de Melo authored
This first happened with a gcc function, _cpp_lex_token, that has the usual jumps: │1159e6c: ↓ jne 115aa32 <_cpp_lex_token@@Base+0xf92> I.e. jumps to a label inside that function (_cpp_lex_token), and those works, but also this kind: │1159e8b: ↓ jne c469be <cpp_named_operator2name@@Base+0xa72> I.e. jumps to another function, outside _cpp_lex_token, which are not being correctly handled generating as a side effect references to ab->offset[] entries that are set to NULL, so to make this code more robust, check that here. A proper fix for will be put in place, looking at the function name right after the '<' token and probably treating this like a 'call' instruction. For now just don't draw the arrow. Reported-by:
Linus Torvalds <torvalds@linux-foundation.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@intel.com> Link: https://lkml.kernel.org/n/tip-5tzvb875ep2sel03aeefgmud@git.kernel.orgSigned-off-by:
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- 04 Mar, 2018 6 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A small set of fixes for x86: - Add missing instruction suffixes to assembly code so it can be compiled by newer GAS versions without warnings. - Switch refcount WARN exceptions to UD2 as we did in general - Make the reboot on Intel Edison platforms work - A small documentation update so text and sample command match" * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation, x86, resctrl: Make text and sample command match x86/platform/intel-mid: Handle Intel Edison reboot correctly x86/asm: Add instruction suffixes to bitops x86/entry/64: Add instruction suffix x86/refcounts: Switch to UD2 for exceptions -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86/pti fixes from Thomas Gleixner: "Three fixes related to melted spectrum: - Sync the cpu_entry_area page table to initial_page_table on 32 bit. Otherwise suspend/resume fails because resume uses initial_page_table and triggers a triple fault when accessing the cpu entry area. - Zero the SPEC_CTL MRS on XEN before suspend to address a shortcoming in the hypervisor. - Fix another switch table detection issue in objtool" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table objtool: Fix another switch table detection issue x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Thomas Gleixner: "A small set of fixes from the timer departement: - Add a missing timer wheel clock forward when migrating timers off a unplugged CPU to prevent operating on a stale clock base and missing timer deadlines. - Use the proper shift count to extract data from a register value to prevent evaluating unrelated bits - Make the error return check in the FSL timer driver work correctly. Checking an unsigned variable for less than zero does not really work well. - Clarify the confusing comments in the ARC timer code" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers: Forward timer base before migrating timers clocksource/drivers/arc_timer: Update some comments clocksource/drivers/mips-gic-timer: Use correct shift count to extract data clocksource/drivers/fsl_ftm_timer: Fix error return checking -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixlet from Thomas Gleixner: "Just a documentation update for the missing device tree property of the R-Car M3N interrupt controller" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dt-bindings/irqchip/renesas-irqc: Document R-Car M3-N support
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: - when NR_CPUS is large, a SRCU structure can significantly inflate size of the main filesystem structure that would not be possible to allocate by kmalloc, so the kvalloc fallback is used - improved error handling - fix endiannes when printing some filesystem attributes via sysfs, this is could happen when a filesystem is moved between different endianity hosts - send fixes: the NO_HOLE mode should not send a write operation for a file hole - fix log replay for for special files followed by file hardlinks - fix log replay failure after unlink and link combination - fix max chunk size calculation for DUP allocation * tag 'for-4.16-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix log replay failure after unlink and link combination Btrfs: fix log replay failure after linking special file and fsync Btrfs: send, fix issuing write op when processing hole in no data mode btrfs: use proper endianness accessors for super_copy btrfs: alloc_chunk: fix DUP stripe size handling btrfs: Handle btrfs_set_extent_delalloc failure in relocate_file_extent_cluster btrfs: handle failure of add_pending_csums btrfs: use kvzalloc to allocate btrfs_fs_info
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- 03 Mar, 2018 9 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "A driver fix and a documentation fix (which makes dependency handling for the next cycle easier)" * 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: octeon: Prevent error message on bus error dt-bindings: at24: sort manufacturers alphabetically
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "A 4.16 regression fix, three fixes for -stable, and a cleanup fix: - During the merge window support for the new ACPI NVDIMM Platform Capabilities structure disabled support for "deep flush", a force-unit- access like mechanism for persistent memory. Restore that mechanism. - VFIO like RDMA is yet one more memory registration / pinning interface that is incompatible with Filesystem-DAX. Disable long term pins of Filesystem-DAX mappings via VFIO. - The Filesystem-DAX detection to prevent long terms pins mistakenly also disabled Device-DAX pins which are not subject to the same block- map collision concerns. - Similar to the setup path, softlockup warnings can trigger in the shutdown path for large persistent memory namespaces. Teach for_each_device_pfn() to perform cond_resched() in all cases. - Boaz noticed that the might_sleep() in dax_direct_access() is stale as of the v4.15 kernel. These have received a build success notification from the 0day robot, and the longterm pin fixes have appeared in -next. However, I recently rebased the tree to remove some other fixes that need to be reworked after review feedback. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: memremap: fix softlockup reports at teardown libnvdimm: re-enable deep flush for pmem devices via fsync() vfio: disable filesystem-dax page pinning dax: fix vma_is_fsdax() helper dax: ->direct_access does not sleep anymore -
Linus Torvalds authored
Merge tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - suppress sparse warnings about unknown attributes - fix typos and stale comments - fix build error of arch/sh - fix wrong use of ld-option vs cc-ldoption - remove redundant GCC_PLUGINS_CFLAGS assignment - fix another memory leak of Kconfig - fix line number in error messages of Kconfig - do not write confusing CONFIG_DEFCONFIG_LIST out to .config - add xstrdup() to Kconfig to handle memory shortage errors - show also a Debian package name if ncurses is missing * tag 'kbuild-fixes-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: MAINTAINERS: take over Kconfig maintainership kconfig: fix line number in recursive inclusion error message Coccinelle: memdup: Fix typo in warning messages kconfig: Update ncurses package names for menuconfig kbuild/kallsyms: trivial typo fix kbuild: test --build-id linker flag by ld-option instead of cc-ldoption kbuild: drop superfluous GCC_PLUGINS_CFLAGS assignment kconfig: Don't leak choice names during parsing sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list kconfig: add xstrdup() helper kbuild: disable sparse warnings about unknown attributes Makefile: Fix lying comment re. silentoldconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media fixes from Mauro Carvalho Chehab: - some build fixes with randconfigs - an m88ds3103 fix to prevent an OOPS if the chip doesn't provide the right version during probe (with can happen if the hardware hangs) - a potential out of array bounds reference in tvp5150 - some fixes and improvements in the DVB memory mapped API (added for kernel 4.16) * tag 'media/v4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: vb2: Makefile: place vb2-trace together with vb2-core media: Don't let tvp5150_get_vbi() go out of vbi_ram_default array media: dvb: update buffer mmaped flags and frame counter media: dvb: add continuity error indicators for memory mapped buffers media: dmxdev: Fix the logic that enables DMA mmap support media: dmxdev: fix error code for invalid ioctls media: m88ds3103: don't call a non-initalized function media: au0828: add VIDEO_V4L2 dependency media: dvb: fix DVB_MMAP dependency media: dvb: fix DVB_MMAP symbol name media: videobuf2: fix build issues with vb2-trace media: videobuf2: Add VIDEOBUF2_V4L2 Kconfig option for VB2 V4L2 part -
git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog fixes from Wim Van Sebroeck: - rave-sp: add NVMEM dependency - build fixes for i6300esb_wdt, xen_wdt and sp5100_tco * tag 'linux-watchdog-4.16-fixes-1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: sp5100_tco.c: fix potential build failure watchdog: xen_wdt: fix potential build failure watchdog: i6300esb: fix build failure watchdog: rave-sp: add NVMEM dependency
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fixes from Radim Krčmář: "x86: - fix NULL dereference when using userspace lapic - optimize spectre v1 mitigations by allowing guests to use LFENCE - make microcode revision configurable to prevent guests from unnecessarily blacklisting spectre v2 mitigation feature" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix vcpu initialization with userspace lapic KVM: X86: Allow userspace to define the microcode version KVM: X86: Introduce kvm_get_msr_feature() KVM: SVM: Add MSR-based feature support for serializing LFENCE KVM: x86: Add a framework for supporting MSR-based features -
Dan Williams authored
The cond_resched() currently in the setup path needs to be duplicated in the teardown path. Rather than require each instance of for_each_device_pfn() to open code the same sequence, embed it in the helper. Link: https://github.com/intel/ixpdimm_sw/issues/11 Cc: "Jérôme Glisse" <jglisse@redhat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: <stable@vger.kernel.org> Fixes: 71389703 ("mm, zone_device: Replace {get, put}_zone_device_page()...") Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Dave Jiang authored
Re-enable deep flush so that users always have a way to be sure that a write makes it all the way out to media. Writes from the PMEM driver always arrive at the NVDIMM since movnt is used to bypass the cache, and the driver relies on the ADR (Asynchronous DRAM Refresh) mechanism to flush write buffers on power failure. The Deep Flush mechanism is there to explicitly write buffers to protect against (rare) ADR failure. This change prevents a regression in deep flush behavior so that applications can continue to depend on fsync() as a mechanism to trigger deep flush in the filesystem-DAX case. Fixes: 06e8ccda ("acpi: nfit: Add support for detect platform CPU cache...") Reviewed-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Signed-off-by:
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Masahiro Yamada authored
I have recently picked up Kconfig patches to my tree without any declaration. Making it official now. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
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