- 13 Sep, 2017 15 commits
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Andi Kleen authored
Some perf stat metrics use an internal "duration_time" metric. It is not correctly printed however. So hide it during output to avoid confusing users with 0 counts. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Acked-by:
Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20170831194036.30146-11-andi@firstfloor.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com>
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Andi Kleen authored
Some of the metrics formulas (like GFLOPs) need to know how long the measurement period is. Support an internal event called duration_time, which reports time in second. It maps to the dummy event, but is special cased for statistics to report the walltime duration. So far it is not printed, but only used internally for metrics. Signed-off-by:
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Andi Kleen authored
We don't need to use ctx to look up events for saved values. The context is already part of the evsel pointer, which is the primary key. Signed-off-by:
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Andi Kleen authored
Add code to perf list to print metric groups, and metrics that don't have an event name. The metricgroup code collects the eventgroups and events into a rblist, and then prints them according to the configured filters. The metricgroups are printed by default, but can be limited by perf list metric or perf list metricgroup % perf list metricgroup .. Metric Groups: DSB: DSB_Coverage [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)] FLOPS: GFLOPs [Giga Floating Point Operations Per Second] Frontend: IFetch_Line_Utilization [Rough Estimation of fraction of fetched lines bytes that were likely consumed by program instructions] Frontend_Bandwidth: DSB_Coverage [Fraction of Uops delivered by the DSB (aka Decoded Icache; or Uop Cache)] Memory_BW: MLP [Memory-Level-Parallelism (average number of L1 miss demand load when there is at least 1 such miss)] v2: Check return value of asprintf to fix warning on FC26 Fix key in lookup/addition for the groups list Signed-off-by: -
Andi Kleen authored
Add generic support for standalone metrics specified in JSON files to perf stat. A metric is a formula that uses multiple events to compute a higher level result (e.g. IPC). Previously metrics were always tied to an event and automatically enabled with that event. But now change it that we can have standalone metrics. They are in the same JSON data structure as events, but don't have an event name. We also allow to organize the metrics in metric groups, which allows a short cut to select several related metrics at once. Add a new -M / --metrics option to perf stat that adds the metrics or metric groups specified. Add the core code to manage and parse the metric groups. They are collected from the JSON data structures into a separate rblist. When computing shadow values look for metrics in that list. Then they are computed using the existing saved values infrastructure in stat-shadow.c The actual JSON metrics are in a separate pull request. % perf stat -M Summary --metric-only -a sleep 1 Performance counter stats for 'system wide': Instructions CLKS CPU_Utilization GFLOPs SMT_2T_Utilization Kernel_Utilization 317614222.0 1392930775.0 0.0 0.0 0.2 0.1 1.001497549 seconds time elapsed % perf stat -M GFLOPs flops Performance counter stats for 'flops': 3,999,541,471 fp_comp_ops_exe.sse_scalar_single # 1.2 GFLOPs (66.65%) 14 fp_comp_ops_exe.sse_scalar_double (66.65%) 0 fp_comp_ops_exe.sse_packed_double (66.67%) 0 fp_comp_ops_exe.sse_packed_single (66.70%) 0 simd_fp_256.packed_double (66.70%) 0 simd_fp_256.packed_single (66.67%) 0 duration_time 3.238372845 seconds time elapsed v2: Add missing header file v3: Move find_map to pmu.c Signed-off-by: -
Andi Kleen authored
Extract the code to get the per cpu JSON alias into a separate function for reuse. No behavior changes. Signed-off-by:
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Andi Kleen authored
Print the generic metric header even when the expression evaluation failed. Otherwise an expression that fails on the first collections due to division by zero may suddenly reappear later without an header. Signed-off-by:
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Andi Kleen authored
The 'perf stat' shadow metric printing already supports generic metrics. Factor out the code doing that into a separate function that can be re-used in a later patch. No behavior changes. v2: Fix indentation Signed-off-by:
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Andi Kleen authored
Some enhancements to the JSON parser to prepare for metrics support - Parse the new MetricGroup field - Support JSON events with no event name, that have only MetricName. Signed-off-by:
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Andi Kleen authored
Setting up groups can be complicated due to the complicated scheduling restrictions of different PMUs. User tools usually don't understand all these restrictions. Still in many cases it is useful to set up groups and they work most of the time. However if the group is set up wrong some members will not report any value because they never get scheduled. Add a concept of a 'weak group': try to set up a group, but if it's not schedulable fallback to not using a group. That gives us the best of both worlds: groups if they work, but still a usable fallback if they don't. In theory it would be possible to have more complex fallback strategies (e.g. try to split the group in half), but the simple fallback of not using a group seems to work for now. So far the weak group is only implemented for perf stat, not for record. Here's an unschedulable group (on IvyBridge with SMT on) % perf stat -e '{branches,branch-misses,l1d.replacement,l2_lines_in.all,l2_rqsts.all_code_rd}' -a sleep 1 73,806,067 branches 4,848,144 branch-misses # 6.57% of all branches 14,754,458 l1d.replacement 24,905,558 l2_lines_in.all <not supported> l2_rqsts.all_code_rd <------- will never report anything With the weak group: % perf stat -e '{branches,branch-misses,l1d.replacement,l2_lines_in.all,l2_rqsts.all_code_rd}:W' -a sleep 1 125,366,055 branches (80.02%) 9,208,402 branch-misses # 7.35% of all branches (80.01%) 24,560,249 l1d.replacement (80.00%) 43,174,971 l2_lines_in.all (80.05%) 31,891,457 l2_rqsts.all_code_rd (79.92%) The extra event scheduled with some extra multiplexing v2: Move fallback code to separate function. Add comment on for_each_group_member Adjust to new perf_evsel__close interface v3: Fix debug print out. Committer testing: Before: # perf stat -e '{branches,branch-misses,l1d.replacement,l2_lines_in.all,l2_rqsts.all_code_rd}' -a sleep 1 Performance counter stats for 'system wide': <not counted> branches <not counted> branch-misses <not counted> l1d.replacement <not counted> l2_lines_in.all <not supported> l2_rqsts.all_code_rd 1.002147212 seconds time elapsed # perf stat -e '{branches,l1d.replacement,l2_lines_in.all,l2_rqsts.all_code_rd}' -a sleep 1 Performance counter stats for 'system wide': 83,207,892 branches 11,065,444 l1d.replacement 28,484,024 l2_lines_in.all 12,186,179 l2_rqsts.all_code_rd 1.001739493 seconds time elapsed After: # perf stat -e '{branches,branch-misses,l1d.replacement,l2_lines_in.all,l2_rqsts.all_code_rd}':W -a sleep 1 Performance counter stats for 'system wide': 543,323,909 branches (80.01%) 27,100,512 branch-misses # 4.99% of all branches (80.02%) 50,402,905 l1d.replacement (80.03%) 67,385,892 l2_lines_in.all (80.01%) 21,352,885 l2_rqsts.all_code_rd (79.94%) 1.001086658 seconds time elapsed # Signed-off-by: -
David Ahern authored
Add options to only show event for specific pid(s) and tid(s). Signed-off-by:
David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1504288152-19690-1-git-send-email-dsahern@gmail.comSigned-off-by:
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Ingo Molnar authored
Merge tag 'perf-urgent-for-mingo-4.14-20170912' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: - Fix TUI progress bar when delta from new total from that of the previous update is greater than the progress "step" (screen width progress bar block)) (Jiri Olsa) - Make tools/lib/api make DEBUG=1 build use -D_FORTIFY_SOURCE=2 not to cripple debuginfo, just like tools/perf/ does (Jiri Olsa) - Avoid leaking the 'perf.data' file to workloads started from the 'perf record' command line by using the O_CLOEXEC open flag (Jiri Olsa) - Fix building when libunwind's 'unwind.h' file is present in the include path, clashing with tools/perf/util/unwind.h (Milian Wolff) - Check per .perfconfig section entry flag, not just per section (Taeung Song) - Support running perf binaries with a dash in their name, needed to run perf as an AppImage (Milian Wolff) - Wait for the right child by using waitpid() when running workloads from 'perf stat', also to fix using perf as an AppImage (Milian Wolff) Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fsLinus Torvalds authored
Pull f2fs updates from Jaegeuk Kim: "In this round, we've mostly tuned f2fs to provide better user experience for Android. Especially, we've worked on atomic write feature again with SQLite community in order to support it officially. And we added or modified several facilities to analyze and enhance IO behaviors. Major changes include: - add app/fs io stat - add inode checksum feature - support project/journalled quota - enhance atomic write with new ioctl() which exposes feature set - enhance background gc/discard/fstrim flows with new gc_urgent mode - add F2FS_IOC_FS{GET,SET}XATTR - fix some quota flows" * tag 'f2fs-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (63 commits) f2fs: hurry up to issue discard after io interruption f2fs: fix to show correct discard_granularity in sysfs f2fs: detect dirty inode in evict_inode f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared f2fs: speed up gc_urgent mode with SSR f2fs: better to wait for fstrim completion f2fs: avoid race in between read xattr & write xattr f2fs: make get_lock_data_page to handle encrypted inode f2fs: use generic terms used for encrypted block management f2fs: introduce f2fs_encrypted_file for clean-up Revert "f2fs: add a new function get_ssr_cost" f2fs: constify super_operations f2fs: fix to wake up all sleeping flusher f2fs: avoid race in between atomic_read & atomic_inc f2fs: remove unneeded parameter of change_curseg f2fs: update i_flags correctly f2fs: don't check inode's checksum if it was dirtied or writebacked f2fs: don't need to update inode checksum for recovery f2fs: trigger fdatasync for non-atomic_write file f2fs: fix to avoid race in between aio and gc ... -
git://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph updates from Ilya Dryomov: "The highlights include: - a large series of fixes and improvements to the snapshot-handling code (Zheng Yan) - individual read/write OSD requests passed down to libceph are now limited to 16M in size to avoid hitting OSD-side limits (Zheng Yan) - encode MStatfs v2 message to allow for more accurate space usage reporting (Douglas Fuller) - switch to the new writeback error tracking infrastructure (Jeff Layton)" * tag 'ceph-for-4.14-rc1' of git://github.com/ceph/ceph-client: (35 commits) ceph: stop on-going cached readdir if mds revokes FILE_SHARED cap ceph: wait on writeback after writing snapshot data ceph: fix capsnap dirty pages accounting ceph: ignore wbc->range_{start,end} when write back snapshot data ceph: fix "range cyclic" mode writepages ceph: cleanup local variables in ceph_writepages_start() ceph: optimize pagevec iterating in ceph_writepages_start() ceph: make writepage_nounlock() invalidate page that beyonds EOF ceph: properly get capsnap's size in get_oldest_context() ceph: remove stale check in ceph_invalidatepage() ceph: queue cap snap only when snap realm's context changes ceph: handle race between vmtruncate and queuing cap snap ceph: fix message order check in handle_cap_export() ceph: fix NULL pointer dereference in ceph_flush_snaps() ceph: adjust 36 checks for NULL pointers ceph: delete an unnecessary return statement in update_dentry_lease() ceph: ENOMEM pr_err in __get_or_create_frag() is redundant ceph: check negative offsets in ceph_llseek() ceph: more accurate statfs ceph: properly set snap follows for cap reconnect ... -
Richard Wareing authored
If using a kernel with CONFIG_XFS_RT=y and we set the RHINHERIT flag on a directory in a filesystem that does not have a realtime device and create a new file in that directory, it gets marked as a real time file. When data is written and a fsync is issued, the filesystem attempts to flush a non-existent rt device during the fsync process. This results in a crash dereferencing a null buftarg pointer in xfs_blkdev_issue_flush(): BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: xfs_blkdev_issue_flush+0xd/0x20 ..... Call Trace: xfs_file_fsync+0x188/0x1c0 vfs_fsync_range+0x3b/0xa0 do_fsync+0x3d/0x70 SyS_fsync+0x10/0x20 do_syscall_64+0x4d/0xb0 entry_SYSCALL64_slow_path+0x25/0x25 Setting RT inode flags does not require special privileges so any unprivileged user can cause this oops to occur. To reproduce, confirm kernel is compiled with CONFIG_XFS_RT=y and run: # mkfs.xfs -f /dev/pmem0 # mount /dev/pmem0 /mnt/test # mkdir /mnt/test/foo # xfs_io -c 'chattr +t' /mnt/test/foo # xfs_io -f -c 'pwrite 0 5m' -c fsync /mnt/test/foo/bar Or just run xfstests with MKFS_OPTIONS="-d rtinherit=1" and wait. Kernels built with CONFIG_XFS_RT=n are not exposed to this bug. Fixes: f538d4da ("[XFS] write barrier support") Cc: <stable@vger.kernel.org> Signed-off-by:Richard Wareing <rwareing@fb.com> Signed-off-by:
Dave Chinner <david@fromorbit.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- 12 Sep, 2017 25 commits
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping updates from Christoph Hellwig: - removal of the old dma_alloc_noncoherent interface - remove unused flags to dma_declare_coherent_memory - restrict OF DMA configuration to specific physical busses - use the iommu mailing list for dma-mapping questions and patches * tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping: dma-coherent: fix dma_declare_coherent_memory() logic error ARM: imx: mx31moboard: Remove unused 'dma' variable dma-coherent: remove an unused variable MAINTAINERS: use the iommu list for the dma-mapping subsystem dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag of: restrict DMA configuration dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent i825xx: switch to switch to dma_alloc_attrs au1000_eth: switch to dma_alloc_attrs sgiseeq: switch to dma_alloc_attrs dma-mapping: reduce dma_mapping_error inline bloat
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git://git.infradead.org/users/hch/uuidLinus Torvalds authored
Pull uuid updates from Christoph Hellwig: "Just a single conversion to the new UUID API for this merge window" * tag 'uuid-for-4.14' of git://git.infradead.org/users/hch/uuid: efi: switch to use new generic UUID API
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinuxLinus Torvalds authored
Pull selinux updates from Paul Moore: "A relatively quiet period for SELinux, 11 patches with only two/three having any substantive changes. These noteworthy changes include another tweak to the NNP/nosuid handling, per-file labeling for cgroups, and an object class fix for AF_UNIX/SOCK_RAW sockets; the rest of the changes are minor tweaks or administrative updates (Stephen's email update explains the file explosion in the diffstat). Everything passes the selinux-testsuite" [ Also a couple of small patches from the security tree from Tetsuo Handa for Tomoyo and LSM cleanup. The separation of security policy updates wasn't all that clean - Linus ] * tag 'selinux-pr-20170831' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: constify nf_hook_ops selinux: allow per-file labeling for cgroupfs lsm_audit: update my email address selinux: update my email address MAINTAINERS: update the NetLabel and Labeled Networking information selinux: use GFP_NOWAIT in the AVC kmem_caches selinux: Generalize support for NNP/nosuid SELinux domain transitions selinux: genheaders should fail if too many permissions are defined selinux: update the selinux info in MAINTAINERS credits: update Paul Moore's info selinux: Assign proper class to PF_UNIX/SOCK_RAW sockets tomoyo: Update URLs in Documentation/admin-guide/LSM/tomoyo.rst LSM: Remove security_task_create() hook.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Two fixes: dead code removal, plus a SME memory encryption fix on 32-bit kernels that crashed Xen guests" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Remove unused and undefined __generic_processor_info() declaration x86/mm: Make the SME mask a u64
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Three fixes: - fix a suspend/resume cpusets bug - fix a !CONFIG_NUMA_BALANCING bug - fix a kerneldoc warning" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix nuisance kernel-doc warning sched/cpuset/pm: Fix cpuset vs. suspend-resume bugs sched/fair: Fix wake_affine_llc() balancing rules
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf tooling updates from Ingo Molnar: "Perf tooling updates and fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf annotate browser: Help for cycling thru hottest instructions with TAB/shift+TAB perf stat: Only auto-merge events that are PMU aliases perf test: Add test case for PERF_SAMPLE_PHYS_ADDR perf script: Support physical address perf mem: Support physical address perf sort: Add sort option for physical address perf tools: Support new sample type for physical address perf vendor events powerpc: Remove duplicate events perf intel-pt: Fix syntax in documentation of config option perf test powerpc: Fix 'Object code reading' test perf trace: Support syscall name globbing perf syscalltbl: Support glob matching on syscall names perf report: Calculate the average cycles of iterations
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Ingo Molnar: "A sparse irq race/locking fix, and a MSI irq domains population fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Make sparse_irq_lock protect what it should protect genirq/msi: Fix populating multiple interrupts
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Chao Yu authored
Once we encounter I/O interruption during issuing discards, we will delay long time before next round, but if system status is I/O idle during the time, it may loses opportunity to issue discards. So this patch changes to hurry up to issue discard after io interruption. Besides, this patch also fixes to issue discards accurately with assigned rate. Signed-off-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Chao Yu authored
Fix below incorrect display when reading discard_granularity sysfs node. $ cat /sys/fs/f2fs/<device>/discard_granularity $ 16 $ echo 32 > /sys/fs/f2fs/<device>/discard_granularity $ cat /sys/fs/f2fs/<device>/discard_granularity $ 16 Signed-off-by:
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Chao Yu authored
Add a bugon in f2fs_evict_inode to detect inconsistent status between inode cache and related node page cache. Signed-off-by:
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Milian Wolff authored
When packaging the perf userland application into an AppImage, the wait() call in perf stat returned too early. It turned out that some other child process exited, but not the one perf stat launched: $ sudo strace -e fork,execve,clone,wait4 -f ./perf-x86_64.AppImage stat sleep 1 execve("./perf-git.3a73b7f9-x86_64.AppImage", ["./perf-git.3a73b7f9-x86_64.AppIm"..., "stat", "sleep", "1"], 0x7ffec1bbf050 /* 18 vars */) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f6a6e7efe50) = 3912 strace: Process 3912 attached [pid 3912] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f6a6e7efe50) = 3914 strace: Process 3914 attached [pid 3912] +++ exited with 0 +++ [pid 3911] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 3914] clone(strace: Process 3915 attached child_stack=0x7f6a6d9fefb0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f6a6d9ff9d0, tls=0x7f6a6d9ff700, child_tidptr=0x7f6a6d9ff9d0) = 3915 [pid 3911] execve("/tmp/.mount_perf-g6VYMpl/AppRun", ["./perf-git.3a73b7f9-x86_64.AppIm"..., "stat", "sleep", "1"], 0x14aab70 /* 21 vars */) = 0 [pid 3911] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f4ae113c4d0) = 3916 strace: Process 3916 attached [pid 3911] wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 3912 [pid 3916] execve("/usr/libexec/perf-core/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/tmp/./sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/home/milian/.bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/usr/lib/icecream/libexec/icecc/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/ssd2/milian/projects/compiled/other/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/home/milian/.bin/kf5/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/ssd2/milian/projects/compiled/kf5/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/home/milian/projects/compiled/other/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/home/milian/projects/compiled/kf5/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/usr/local/sbin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/usr/local/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */) = -1 ENOENT (No such file or directory) [pid 3916] execve("/usr/bin/sleep", ["sleep", "1"], 0x27d3650 /* 22 vars */ Performance counter stats for 'sleep 1': <not counted> task-clock <not counted> context-switches <not counted> cpu-migrations <not counted> page-faults <not counted> cycles <not counted> instructions <not counted> branches <not counted> branch-misses 0.000047194 seconds time elapsed [pid 3916] --- SIGTERM {si_signo=SIGTERM, si_code=SI_USER, si_pid=3911, si_uid=0} --- [pid 3916] +++ killed by SIGTERM +++ [pid 3911] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=3916, si_uid=0, si_status=SIGTERM, si_utime=0, si_stime=0} --- [pid 3915] --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=3914, si_uid=0} --- [pid 3911] +++ exited with 0 +++ [pid 3915] --- SIGHUP {si_signo=SIGHUP, si_code=SI_USER, si_pid=3914, si_uid=0} --- [pid 3915] +++ exited with 0 +++ +++ exited with 0 +++ This patch uses waitpid instead to ensure the call waits for the debuggee application launched by 'perf stat'. This fixes 'perf stat' when launched from an AppImage: $ ./perf-x86_64.AppImage stat sleep 1 Performance counter stats for 'sleep 1': 0.357235 task-clock (msec) # 0.000 CPUs utilized 1 context-switches # 0.003 M/sec 0 cpu-migrations # 0.000 K/sec 50 page-faults # 0.140 M/sec 1269602 cycles # 3.554 GHz 654278 instructions # 0.52 insn per cycle 129963 branches # 363.803 M/sec 7082 branch-misses # 5.45% of all branches 1.000633420 seconds time elapsed Signed-off-by:Milian Wolff <milian.wolff@kdab.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20170912152523.4497-1-milian.wolff@kdab.comSigned-off-by:
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Milian Wolff authored
Previously the part behind "perf-" was interpreted as an internal perf command. If the suffix could not be handled, the execution was stopped. This makes it impossible to launch perf binaries that got renamed to have the `perf-` prefix. This is e.g. the case for appimages (e.g. "perf-x86_64.AppImage"), but would also apply to all other scenarios where users symlink or rename perf themselves: Status quo with the broken behavior: $ ln -s ./perf ./perf-custom-suffix $ ./perf-custom-suffix list cannot handle custom-suffix internally$ Also note the missing newline at the end of the error message. With this patch applied, the above works properly: $ ./perf-custom-suffix list List of pre-defined events (to be used in -e): ... Signed-off-by:
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Taeung Song authored
Currently section->from_system_config is being checked multiple times. item->from_system_config should be checked instead, when iterating thru the items in a section. Fix it. Signed-off-by:
Taeung Song <treeze.taeung@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1504754325-9724-1-git-send-email-treeze.taeung@gmail.comSigned-off-by:
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Jiri Olsa authored
We currently update the 'next' variable only with a single step value. But it's possible the 'adv' update is bigger than single 'step' value. This would leave 'next' value under counted and force unnecessary ui_progress__ops->update calls. Calculate the amount of steps we need for 'adv' update and increase the 'next' with that amounts of steps. Signed-off-by:
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Jiri Olsa authored
Unlikely, but we could have ui_progress__init being called with total < 16, which would set the next and step variables to 0. That would force unnecessary ui_progress__ops->update calls because 'next' would never raise. Forcing the next and step values to be always > 0. Signed-off-by:
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Jiri Olsa authored
Do not carry the perf.data file descriptor into the workload process and close it when perf executes the workload. Signed-off-by:
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Jiri Olsa authored
Do not use -D_FORTIFY_SOURCE=2 for DEBUG build as it seems to mess up with debuginfo, which results in bad gdb experience. We already do that for tools/perf/. Signed-off-by:
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Milian Wolff authored
When cross compiling perf and I want to link against a self-compiled libunwind, I usually make the custom path where the libunwind headers exist visible by adding the libunwind prefix to the include path when compiling perf, i.e.: ~~~~~ $ ls $HOME/projects/compiled/other/include/ libunwind-coredump.h libunwind.h libunwind-x86_64.h libunwind-common.h libunwind-dynamic.h libunwind-ptrace.h unwind.h $ make EXTRA_CFLAGS="-I$HOME/projects/compiled/other/include/ ~~~~~~ Note the `unwind.h` header from libunwind which leads to compile errors when compiling tests/dwarf-unwind.c, since it shadows perf's util/unwind.h: ~~~~~ tests/dwarf-unwind.c:41:32: error: ‘struct unwind_entry’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror] static int unwind_entry(struct unwind_entry *entry, void *arg) ^~~~~~~~~~~~ tests/dwarf-unwind.c: In function ‘unwind_entry’: tests/dwarf-unwind.c:44:22: error: dereferencing pointer to incomplete type ‘struct unwind_entry’ char *symbol = entry->sym ? entry->sym->name : NULL; ^~ tests/dwarf-unwind.c: In function ‘unwind_thread’: tests/dwarf-unwind.c:92:8: error: implicit declaration of function ‘unwind__get_entries’; did you mean ‘unwind_entry’? [-Werror=implicit-function-declaration] err = unwind__get_entries(unwind_entry, &cnt, thread, ^~~~~~~~~~~~~~~~~~~ unwind_entry tests/dwarf-unwind.c:92:8: error: nested extern declaration of ‘unwind__get_entries’ [-Werror=nested-externs] ~~~~~~ Fix this compile error by specificing an explicit include of perf's unwind.h in the util folder. Signed-off-by: -
Arnaldo Carvalho de Melo authored
When cross building to android r15c (and older versions) on Fedora 26 we notice these: /opt/android-ndk-r15c/platforms/android-24/arch-arm/usr/include/sys/cdefs.h:332:0: note: this is the location of the previous definition For __aligned, __packed and __noreturn, so guard those with ifdefs to avoid drowning useful warnings in these. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-d7w3fa9c22dtmrwbedos6ie1@git.kernel.orgSigned-off-by:
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM updates from Russell King: "Low priority fixes and updates for ARM: - add some missing includes - efficiency improvements in system call entry code when tracing is enabled - ensure ARMv6+ is always built as EABI - export save_stack_trace_tsk() - fix fatal signal handling during mm fault - build translation table base address register from scratch - appropriately align the .data section to a word boundary where we rely on that data being word aligned" * 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8691/1: Export save_stack_trace_tsk() ARM: 8692/1: mm: abort uaccess retries upon fatal signal ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup ARM: align .data section ARM: always enable AEABI for ARMv6+ ARM: avoid saving and restoring registers unnecessarily ARM: move PC value into r9 ARM: obtain thread info structure later ARM: use aliases for registers in entry-common ARM: 8689/1: scu: add missing errno include ARM: 8688/1: pm: add missing types include -
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull more s390 updates from Martin Schwidefsky: "The second patch set for the 4.14 merge window: - Convert the dasd device driver to the blk-mq interface. - Provide three zcrypt interfaces for vfio_ap. These will be required for KVM guest access to the crypto cards attached via the AP bus. - A couple of memory management bug fixes." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/dasd: blk-mq conversion s390/mm: use a single lock for the fields in mm_context_t s390/mm: fix race on mm->context.flush_mm s390/mm: fix local TLB flushing vs. detach of an mm address space s390/zcrypt: externalize AP queue interrupt control s390/zcrypt: externalize AP config info query s390/zcrypt: externalize test AP queue s390/mm: use VM_BUG_ON in crst_table_[upgrade|downgrade] -
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linuxLinus Torvalds authored
Pull thermal updates from Zhang Rui: - fix resources release in error paths when registering thermal zone. (Christophe Jaillet) - introduce a new thermal driver for on-chip PVT (Process, Voltage and Temperature) monitoring unit implemented on UniPhier SoCs. This driver supports temperature monitoring and alert function. (Kunihiko Hayashi) - Add support for mt2712 chip in the mtk_thermal driver. (Louis Yu) - Add support for RK3328 SOC in rockchip_thermal driver. (Rocky Hao) - cleanup a couple of platform thermal drivers to constify thermal_zone_of_device_ops structures. (Julia Lawall) - a couple of fixes in int340x and intel_pch_thermal thermal driver. (Arvind Yadav, Sumeet Pawnikar, Brian Bian, Ed Swierk, Zhang Rui) * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (27 commits) Thermal: int3406_thermal: fix thermal sysfs I/F thermal: mediatek: minor mtk_thermal.c cleanups thermal: mediatek: extend calibration data for mt2712 chip thermal: mediatek: add Mediatek thermal driver for mt2712 dt-bindings: thermal: Add binding document for Mediatek thermal controller thermal: intel_pch_thermal: Fix enable check on Broadwell-DE thermal: rockchip: Support the RK3328 SOC in thermal driver dt-bindings: rockchip-thermal: Support the RK3328 SoC compatible thermal: bcm2835: constify thermal_zone_of_device_ops structures thermal: exynos: constify thermal_zone_of_device_ops structures thermal: zx2967: constify thermal_zone_of_device_ops structures thermal: rcar_gen3_thermal: constify thermal_zone_of_device_ops structures thermal: qoriq: constify thermal_zone_of_device_ops structures thermal: hisilicon: constify thermal_zone_of_device_ops structures thermal: core: Fix resources release in error paths in thermal_zone_device_register() thermal: core: Use the new 'thermal_zone_destroy_device_groups()' helper function thermal: core: Add some new helper functions to free resources thermal: int3400_thermal: process "thermal table changed" event thermal: uniphier: add UniPhier thermal driver dt-bindings: thermal: add binding documentation for UniPhier thermal monitor ...
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git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
Pull NFS client updates from Trond Myklebust: "Hightlights include: Stable bugfixes: - Fix mirror allocation in the writeback code to avoid a use after free - Fix the O_DSYNC writes to use the correct byte range - Fix 2 use after free issues in the I/O code Features: - Writeback fixes to split up the inode->i_lock in order to reduce contention - RPC client receive fixes to reduce the amount of time the xprt->transport_lock is held when receiving data from a socket into am XDR buffer. - Ditto fixes to reduce contention between call side users of the rdma rb_lock, and its use in rpcrdma_reply_handler. - Re-arrange rdma stats to reduce false cacheline sharing. - Various rdma cleanups and optimisations. - Refactor the NFSv4.1 exchange id code and clean up the code. - Const-ify all instances of struct rpc_xprt_ops Bugfixes: - Fix the NFSv2 'sec=' mount option. - NFSv4.1: don't use machine credentials for CLOSE when using 'sec=sys' - Fix the NFSv3 GRANT callback when the port changes on the server. - Fix livelock issues with COMMIT - NFSv4: Use correct inode in _nfs4_opendata_to_nfs4_state() when doing and NFSv4.1 open by filehandle" * tag 'nfs-for-4.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (69 commits) NFS: Count the bytes of skipped subrequests in nfs_lock_and_join_requests() NFS: Don't hold the group lock when calling nfs_release_request() NFS: Remove pnfs_generic_transfer_commit_list() NFS: nfs_lock_and_join_requests and nfs_scan_commit_list can deadlock NFS: Fix 2 use after free issues in the I/O code NFS: Sync the correct byte range during synchronous writes lockd: Delete an error message for a failed memory allocation in reclaimer() NFS: remove jiffies field from access cache NFS: flush data when locking a file to ensure cache coherence for mmap. SUNRPC: remove some dead code. NFS: don't expect errors from mempool_alloc(). xprtrdma: Use xprt_pin_rqst in rpcrdma_reply_handler xprtrdma: Re-arrange struct rx_stats NFS: Fix NFSv2 security settings NFSv4.1: don't use machine credentials for CLOSE when using 'sec=sys' SUNRPC: ECONNREFUSED should cause a rebind. NFS: Remove unused parameter gfp_flags from nfs_pageio_init() NFSv4: Fix up mirror allocation SUNRPC: Add a separate spinlock to protect the RPC request receive list SUNRPC: Cleanup xs_tcp_read_common() ... -
Daeho Jeong authored
On a senario like writing out the first dirty page of the inode as the inline data, we only cleared dirty flags of the pages, but didn't clear the dirty tags of those pages in the radix tree. If we don't clear the dirty tags of the pages in the radix tree, the inodes which contain the pages will be marked with I_DIRTY_PAGES again and again, and writepages() for the inodes will be invoked in every writeback period. As a result, nothing will be done in every writepages() for the inodes and it will just consume CPU time meaninglessly. Signed-off-by:
Daeho Jeong <daeho.jeong@samsung.com> Reviewed-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespaceLinus Torvalds authored
Pull namespace updates from Eric Biederman: "Life has been busy and I have not gotten half as much done this round as I would have liked. I delayed it so that a minor conflict resolution with the mips tree could spend a little time in linux-next before I sent this pull request. This includes two long delayed user namespace changes from Kirill Tkhai. It also includes a very useful change from Serge Hallyn that allows the security capability attribute to be used inside of user namespaces. The practical effect of this is people can now untar tarballs and install rpms in user namespaces. It had been suggested to generalize this and encode some of the namespace information information in the xattr name. Upon close inspection that makes the things that should be hard easy and the things that should be easy more expensive. Then there is my bugfix/cleanup for signal injection that removes the magic encoding of the siginfo union member from the kernel internal si_code. The mips folks reported the case where I had used FPE_FIXME me is impossible so I have remove FPE_FIXME from mips, while at the same time including a return statement in that case to keep gcc from complaining about unitialized variables. I almost finished the work to get make copy_siginfo_to_user a trivial copy to user. The code is available at: git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git neuter-copy_siginfo_to_user-v3 But I did not have time/energy to get the code posted and reviewed before the merge window opened. I was able to see that the security excuse for just copying fields that we know are initialized doesn't work in practice there are buggy initializations that don't initialize the proper fields in siginfo. So we still sometimes copy unitialized data to userspace" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: Introduce v3 namespaced file capabilities mips/signal: In force_fcr31_sig return in the impossible case signal: Remove kernel interal si_code magic fcntl: Don't use ambiguous SIG_POLL si_codes prctl: Allow local CAP_SYS_ADMIN changing exe_file security: Use user_namespace::level to avoid redundant iterations in cap_capable() userns,pidns: Verify the userns for new pid namespaces signal/testing: Don't look for __SI_FAULT in userspace signal/mips: Document a conflict with SI_USER with SIGFPE signal/sparc: Document a conflict with SI_USER with SIGFPE signal/ia64: Document a conflict with SI_USER with SIGFPE signal/alpha: Document a conflict with SI_USER for SIGTRAP
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