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2017-12-18Merge tag 'v4.15-rc4' into perf/core, to pick up fixesIngo Molnar12-44/+74
Signed-off-by: Ingo Molnar <[email protected]>
2017-12-17libbpf: fix Makefile exit code if libelf not foundJakub Kicinski1-2/+2
/bin/sh's exit does not recognize -1 as a number, leading to the following error message: /bin/sh: 1: exit: Illegal number: -1 Use 1 as the exit code. Signed-off-by: Jakub Kicinski <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17selftests/bpf: additional bpf_call testsDaniel Borkmann1-0/+597
Add some additional checks for few more corner cases. Signed-off-by: Daniel Borkmann <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17selftests/bpf: add xdp noinline testAlexei Starovoitov3-1/+916
add large semi-artificial XDP test with 18 functions to stress test bpf call verification logic Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17selftests/bpf: add bpf_call testAlexei Starovoitov3-6/+492
strip always_inline from test_l4lb.c and compile it with -fno-inline to let verifier go through 11 function with various function arguments and return values Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17libbpf: add support for bpf_callAlexei Starovoitov3-44/+134
- recognize relocation emitted by llvm - since all regular function will be kept in .text section and llvm takes care of pc-relative offsets in bpf_call instruction simply copy all of .text to relevant program section while adjusting bpf_call instructions in program section to point to newly copied body of instructions from .text - do so for all programs in the elf file - set all programs types to the one passed to bpf_prog_load() Note for elf files with multiple programs that use different functions in .text section we need to do 'linker' style logic. This work is still TBD Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17selftests/bpf: add tests for stack_zero trackingAlexei Starovoitov1-2/+64
adjust two tests, since verifier got smarter and add new one to test stack_zero logic Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17selftests/bpf: add verifier tests for bpf_callAlexei Starovoitov1-1/+960
Add extensive set of tests for bpf_call verification logic: calls: basic sanity calls: using r0 returned by callee calls: callee is using r1 calls: callee using args1 calls: callee using wrong args2 calls: callee using two args calls: callee changing pkt pointers calls: two calls with args calls: two calls with bad jump calls: recursive call. test1 calls: recursive call. test2 calls: unreachable code calls: invalid call calls: jumping across function bodies. test1 calls: jumping across function bodies. test2 calls: call without exit calls: call into middle of ld_imm64 calls: call into middle of other call calls: two calls with bad fallthrough calls: two calls with stack read calls: two calls with stack write calls: spill into caller stack frame calls: two calls with stack write and void return calls: ambiguous return value calls: two calls that return map_value calls: two calls that return map_value with bool condition calls: two calls that return map_value with incorrect bool check calls: two calls that receive map_value via arg=ptr_stack_of_caller. test1 calls: two calls that receive map_value via arg=ptr_stack_of_caller. test2 calls: two jumps that receive map_value via arg=ptr_stack_of_jumper. test3 calls: two calls that receive map_value_ptr_or_null via arg. test1 calls: two calls that receive map_value_ptr_or_null via arg. test2 calls: pkt_ptr spill into caller stack Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-17Merge branch 'upstream-x86-selftests' into WIP.x86/pti.baseIngo Molnar2-24/+88
Conflicts: arch/x86/kernel/cpu/Makefile Signed-off-by: Ingo Molnar <[email protected]>
2017-12-17Merge commit 'upstream-x86-entry' into WIP.x86/mmIngo Molnar2-6/+7
Pull in a minimal set of v4.15 entry code changes, for a base for the MM isolation patches. Signed-off-by: Ingo Molnar <[email protected]>
2017-12-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller12-44/+74
Three sets of overlapping changes, two in the packet scheduler and one in the meson-gxl PHY driver. Signed-off-by: David S. Miller <[email protected]>
2017-12-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2-12/+8
Pull networking fixes from David Miller: 1) Clamp timeouts to INT_MAX in conntrack, from Jay Elliot. 2) Fix broken UAPI for BPF_PROG_TYPE_PERF_EVENT, from Hendrik Brueckner. 3) Fix locking in ieee80211_sta_tear_down_BA_sessions, from Johannes Berg. 4) Add missing barriers to ptr_ring, from Michael S. Tsirkin. 5) Don't advertise gigabit in sh_eth when not available, from Thomas Petazzoni. 6) Check network namespace when delivering to netlink taps, from Kevin Cernekee. 7) Kill a race in raw_sendmsg(), from Mohamed Ghannam. 8) Use correct address in TCP md5 lookups when replying to an incoming segment, from Christoph Paasch. 9) Add schedule points to BPF map alloc/free, from Eric Dumazet. 10) Don't allow silly mtu values to be used in ipv4/ipv6 multicast, also from Eric Dumazet. 11) Fix SKB leak in tipc, from Jon Maloy. 12) Disable MAC learning on OVS ports of mlxsw, from Yuval Mintz. 13) SKB leak fix in skB_complete_tx_timestamp(), from Willem de Bruijn. 14) Add some new qmi_wwan device IDs, from Daniele Palmas. 15) Fix static key imbalance in ingress qdisc, from Jiri Pirko. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits) net: qcom/emac: Reduce timeout for mdio read/write net: sched: fix static key imbalance in case of ingress/clsact_init error net: sched: fix clsact init error path ip_gre: fix wrong return value of erspan_rcv net: usb: qmi_wwan: add Telit ME910 PID 0x1101 support pkt_sched: Remove TC_RED_OFFLOADED from uapi net: sched: Move to new offload indication in RED net: sched: Add TCA_HW_OFFLOAD net: aquantia: Increment driver version net: aquantia: Fix typo in ethtool statistics names net: aquantia: Update hw counters on hw init net: aquantia: Improve link state and statistics check interval callback net: aquantia: Fill in multicast counter in ndev stats from hardware net: aquantia: Fill ndev stat couters from hardware net: aquantia: Extend stat counters to 64bit values net: aquantia: Fix hardware DMA stream overload on large MRRS net: aquantia: Fix actual speed capabilities reporting sock: free skb in skb_complete_tx_timestamp on error s390/qeth: update takeover IPs after configuration change s390/qeth: lock IP table while applying takeover changes ...
2017-12-15Merge tag 'usb-4.15-rc4' of ↵Linus Torvalds1-5/+5
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some USB fixes for 4.15-rc4. There is the usual handful gadget/dwc2/dwc3 fixes as always, for reported issues. But the most important things in here is the core fix from Alan Stern to resolve a nasty security bug (my first attempt is reverted, Alan's was much cleaner), as well as a number of usbip fixes from Shuah Khan to resolve those reported security issues. All of these have been in linux-next with no reported issues" * tag 'usb-4.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: core: prevent malicious bNumInterfaces overflow Revert "USB: core: only clean up what we allocated" USB: core: only clean up what we allocated Revert "usb: gadget: allow to enable legacy drivers without USB_ETH" usb: gadget: webcam: fix V4L2 Kconfig dependency usb: dwc2: Fix TxFIFOn sizes and total TxFIFO size issues usb: dwc3: gadget: Fix PCM1 for ISOC EP with ep->mult less than 3 usb: dwc3: of-simple: set dev_pm_ops usb: dwc3: of-simple: fix missing clk_disable_unprepare usb: dwc3: gadget: Wait longer for controller to end command processing usb: xhci: fix TDS for MTK xHCI1.1 xhci: Don't add a virt_dev to the devs array before it's fully allocated usbip: fix stub_send_ret_submit() vulnerability to null transfer_buffer usbip: prevent vhci_hcd driver from leaking a socket pointer address usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input usbip: fix stub_rx: get_pipe() to validate endpoint number tools/usbip: fixes potential (minor) "buffer overflow" (detected on recent gcc with -Werror) USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567 ID usb: musb: da8xx: fix babble condition handling
2017-12-15Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds1-6/+23
Pull virtio regression fixes from Michael Tsirkin: "Fixes two issues in the latest kernel" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio_mmio: fix devm cleanup ptr_ring: fix up after recent ptr_ring changes
2017-12-15Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2-5/+23
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: "Misc fixes: - fix the s2ram regression related to confusion around segment register restoration, plus related cleanups that make the code more robust - a guess-unwinder Kconfig dependency fix - an isoimage build target fix for certain tool chain combinations - instruction decoder opcode map fixes+updates, and the syncing of the kernel decoder headers to the objtool headers - a kmmio tracing fix - two 5-level paging related fixes - a topology enumeration fix on certain SMP systems" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Resync objtool's instruction decoder source code copy with the kernel's latest version x86/decoder: Fix and update the opcodes map x86/power: Make restore_processor_context() sane x86/power/32: Move SYSENTER MSR restoration to fix_processor_context() x86/power/64: Use struct desc_ptr for the IDT in struct saved_context x86/unwinder/guess: Prevent using CONFIG_UNWINDER_GUESS=y with CONFIG_STACKDEPOT=y x86/build: Don't verify mtools configuration file for isoimage x86/mm/kmmio: Fix mmiotrace for page unaligned addresses x86/boot/compressed/64: Print error if 5-level paging is not supported x86/boot/compressed/64: Detect and handle 5-level paging at boot-time x86/smpboot: Do not use smp_num_siblings in __max_logical_packages calculation
2017-12-15Merge branch 'locking-urgent-for-linus' of ↵Linus Torvalds3-13/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fixes from Ingo Molnar: "Misc fixes: - Fix a S390 boot hang that was caused by the lock-break logic. Remove lock-break to begin with, as review suggested it was unreasonably fragile and our confidence in its continued good health is lower than our confidence in its removal. - Remove the lockdep cross-release checking code for now, because of unresolved false positive warnings. This should make lockdep work well everywhere again. - Get rid of the final (and single) ACCESS_ONCE() straggler and remove the API from v4.15. - Fix a liblockdep build warning" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools/lib/lockdep: Add missing declaration of 'pr_cont()' checkpatch: Remove ACCESS_ONCE() warning compiler.h: Remove ACCESS_ONCE() tools/include: Remove ACCESS_ONCE() tools/perf: Convert ACCESS_ONCE() to READ_ONCE() locking/lockdep: Remove the cross-release locking checks locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y locking/core: Fix deadlock during boot on systems with GENERIC_LOCKBREAK
2017-12-15bpf: add test case for ld_abs and helper changing pkt dataDaniel Borkmann1-0/+24
Add a test that i) uses LD_ABS, ii) zeroing R6 before call, iii) calls a helper that triggers reload of cached skb data, iv) uses LD_ABS again. It's added for test_bpf in order to do runtime testing after JITing as well as test_verifier to test that the sequence is allowed. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2017-12-15cpupower: Remove FSF addressLaura Abbott1-4/+0
Checkpatch in the kernel now complains about having the FSF address in comments. Other tools such as rpmlint are now starting to do the same thing. Remove the FSF address to reduce warnings on multiple tools. Signed-off-by: Laura Abbott <[email protected]> Acked-by: Dominik Brodowski <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2017-12-15tools/headers: Synchronize kernel <-> tooling headersIngo Molnar2-2/+3
Two kernel headers got modified recently, which are used by tooling as well: tools/include/uapi/linux/kvm.h arch/x86/include/asm/cpufeatures.h None of those changes have an effect on tooling, so do a plain copy. Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: [email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-15objtool: Resync objtool's instruction decoder source code copy with the ↵Ingo Molnar1-0/+10
kernel's latest version This fixes the following warning: warning: objtool: x86 instruction decoder differs from kernel Note that there are cleanups queued up for v4.16 that will make this warning more informative and will make the syncing easier as well. Cc: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-15x86/decoder: Fix and update the opcodes mapRandy Dunlap2-6/+24
Update x86-opcode-map.txt based on the October 2017 Intel SDM publication. Fix INVPID to INVVPID. Add UD0 and UD1 instruction opcodes. Also sync the objtool and perf tooling copies of this file. Signed-off-by: Randy Dunlap <[email protected]> Acked-by: Masami Hiramatsu <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-14tools/slabinfo-gnuplot: force to use bash shellLiu, Changcheng1-1/+1
On some linux distributions, the default link of sh is dash which deoesn't support split array like "${var//,/ }" It's better to force to use bash shell directly. Link: http://lkml.kernel.org/r/20171208093751.GA175471@sofia Signed-off-by: Liu Changcheng <[email protected]> Reviewed-by: Sergey Senozhatsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2017-12-14bpftool: implement cgroup bpf operationsRoman Gushchin7-5/+434
This patch adds basic cgroup bpf operations to bpftool: cgroup list, attach and detach commands. Usage is described in the corresponding man pages, and examples are provided. Syntax: $ bpftool cgroup list CGROUP $ bpftool cgroup attach CGROUP ATTACH_TYPE PROG [ATTACH_FLAGS] $ bpftool cgroup detach CGROUP ATTACH_TYPE PROG Signed-off-by: Roman Gushchin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Jakub Kicinski <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Quentin Monnet <[email protected]> Reviewed-by: David Ahern <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-14bpftool: implement prog load commandRoman Gushchin5-34/+79
Add the prog load command to load a bpf program from a specified binary file and pin it to bpffs. Usage description and examples are given in the corresponding man page. Syntax: $ bpftool prog load OBJ FILE FILE is a non-existing file on bpffs. Signed-off-by: Roman Gushchin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Quentin Monnet <[email protected]> Cc: David Ahern <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-14libbpf: prefer global symbols as bpf program name sourceRoman Gushchin1-0/+2
Libbpf picks the name of the first symbol in the corresponding elf section to use as a program name. But without taking symbol's scope into account it may end's up with some local label as a program name. E.g.: $ bpftool prog 1: type 15 name LBB0_10 tag 0390a5136ba23f5c loaded_at Dec 07/17:22 uid 0 xlated 456B not jited memlock 4096B Fix this by preferring global symbols as program name. For instance: $ bpftool prog 1: type 15 name bpf_prog1 tag 0390a5136ba23f5c loaded_at Dec 07/17:26 uid 0 xlated 456B not jited memlock 4096B Signed-off-by: Roman Gushchin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Jakub Kicinski <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Quentin Monnet <[email protected]> Cc: David Ahern <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-14libbpf: add ability to guess program type based on section nameRoman Gushchin1-0/+51
The bpf_prog_load() function will guess program type if it's not specified explicitly. This functionality will be used to implement loading of different programs without asking a user to specify the program type. In first order it will be used by bpftool. Signed-off-by: Roman Gushchin <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Jakub Kicinski <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Quentin Monnet <[email protected]> Cc: David Ahern <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-14tools/kvm_stat: add line for totalsStefan Raspl1-1/+8
Add a line for the total number of events and current average at the bottom of the body. Note that both values exclude child trace events. I.e. if drilldown is activated via interactive command 'x', only the totals are accounted, or we'd be counting these twice (see previous commit "tools/kvm_stat: fix child trace events accounting"). Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: stop ignoring unhandled argumentsStefan Raspl1-1/+3
Unhandled arguments, which could easily include typos, are simply ignored. We should be strict to avoid undetected typos. To reproduce start kvm_stat with an extra argument, e.g. 'kvm_stat -d bnuh5ol' and note that this will actually work. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: suppress usage information on command line errorsStefan Raspl1-8/+5
Errors while parsing the '-g' command line argument result in display of usage information prior to the error message. This is a bit confusing, as the command line is syntactically correct. To reproduce, run 'kvm_stat -g' and specify a non-existing or inactive guest. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: handle invalid regular expressionsStefan Raspl1-0/+7
Passing an invalid regular expression on the command line results in a traceback. Note that interactive specification of invalid regular expressions is not affected To reproduce, run "kvm_stat -f '*'". Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: add hint on '-f help' to man pageStefan Raspl1-1/+1
The man page update for this new functionality was omitted. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: fix child trace events accountingStefan Raspl2-3/+5
Child trace events were included in calculation of the overall total, which is used for calculation of the percentages of the '%Total' column. However, the parent trace envents' stats summarize the child trace events, hence we'd incorrectly account for them twice, leading to slightly wrong stats. With this fix, we use the correct total. Consequently, the sum of the child trace events' '%Total' column values is identical to the respective value of the respective parent event. However, this also means that the sum of the '%Total' column values will aggregate to more than 100 percent. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: fix extra handling of 'help' with fields filterStefan Raspl1-1/+2
Commit 67fbcd62f54d ("tools/kvm_stat: add '-f help' to get the available event list") added support for '-f help'. However, the extra handling of 'help' will also take effect when 'help' is specified as a regex in interactive mode via 'f'. This results in display of all events while only those matching this regex should be shown. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: fix missing field update after filter changeStefan Raspl1-2/+2
When updating the fields filter, tracepoint events of fields previously not visible were not enabled, as TracepointProvider.update_fields() updated the member variable directly instead of using the setter, which triggers the event enable/disable. To reproduce, run 'kvm_stat -f kvm_exit', press 'c' to remove the filter, and notice that no add'l fields that do not match the regex 'kvm_exit' will appear. This issue was introduced by commit c469117df059 ("tools/kvm_stat: simplify initializers"). Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: fix drilldown in events-by-guests modeStefan Raspl1-1/+1
When displaying debugfs events listed by guests, an attempt to switch to reporting of stats for individual child trace events results in garbled output. Reason is that when toggling drilldown, the update of the stats doesn't honor when events are displayed by guests, as indicated by Tui._display_guests. To reproduce, run 'kvm_stat -d' and press 'b' followed by 'x'. Signed-off-by: Stefan Raspl <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-14tools/kvm_stat: fix command line option '-g'Stefan Raspl1-4/+6
Specifying a guest via '-g foo' always results in an error: $ kvm_stat -g foo Usage: kvm_stat [options] kvm_stat: error: Error while searching for guest "foo", use "-p" to specify a pid instead Reason is that Tui.get_pid_from_gname() is not static, as it is supposed to be. Signed-off-by: Stefan Raspl <[email protected]> Tested-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2017-12-13tools/lib/lockdep: Add missing declaration of 'pr_cont()'Mengting Zhang1-0/+1
Commit: 681fbec881de ("lockdep: Use consistent printing primitives") has moved lockdep away from using printk() for printing. The commit added usage of pr_cont() which wasn't wrapped in the userspace headers, causing the following warning for the liblockdep build: ../../../kernel/locking/lockdep.c:3544:2: warning: implicit declaration of function 'pr_cont' [-Wimplicit-function-declaration] Adding an empty declaration of 'pr_cont' fixes the problem. Signed-off-by: Mengting Zhang <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Reviewed-by: Alexander Sverdlin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-12bpf: fix broken BPF selftest buildDaniel Borkmann2-12/+8
At least on x86_64, the kernel's BPF selftests seemed to have stopped to build due to 618e165b2a8e ("selftests/bpf: sync kernel headers and introduce arch support in Makefile"): [...] In file included from test_verifier.c:29:0: ../../../include/uapi/linux/bpf_perf_event.h:11:32: fatal error: asm/bpf_perf_event.h: No such file or directory #include <asm/bpf_perf_event.h> ^ compilation terminated. [...] While pulling in tools/arch/*/include/uapi/asm/bpf_perf_event.h seems to work fine, there's no automated fall-back logic right now that would do the same out of tools/include/uapi/asm-generic/bpf_perf_event.h. The usual convention today is to add a include/[uapi/]asm/ equivalent that would pull in the correct arch header or generic one as fall-back, all ifdef'ed based on compiler target definition. It's similarly done also in other cases such as tools/include/asm/barrier.h, thus adapt the same here. Fixes: 618e165b2a8e ("selftests/bpf: sync kernel headers and introduce arch support in Makefile") Signed-off-by: Daniel Borkmann <[email protected]> Cc: Hendrik Brueckner <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2017-12-12samples/bpf: add a test for bpf_override_returnJosef Bacik2-2/+8
This adds a basic test for bpf_override_return to verify it works. We override the main function for mounting a btrfs fs so it'll return -ENOMEM and then make sure that trying to mount a btrfs fs will fail. Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Ingo Molnar <[email protected]> Signed-off-by: Josef Bacik <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2017-12-12bpf/tracing: add a bpf test for new ioctl query interfaceYonghong Song4-1/+182
Added a subtest in test_progs. The tracepoint is sched/sched_switch. Multiple bpf programs are attached to this tracepoint and the query interface is exercised. Signed-off-by: Yonghong Song <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2017-12-12Merge tag 'v4.15-rc3' into perf/core, to refresh the treeIngo Molnar12-14/+540
Signed-off-by: Ingo Molnar <[email protected]>
2017-12-12tools/include: Remove ACCESS_ONCE()Mark Rutland1-12/+9
There are no longer any usersapce uses of ACCESS_ONCE(), so we can remove the definition from our userspace <linux/compiler.h>, which is only used by tools in the kernel directory (i.e. it isn't a uapi header). This patch removes the ACCESS_ONCE() definition, and updates comments which referred to it. At the same time, some inconsistent and redundant whitespace is removed from comments. Tested-by: Paul E. McKenney <[email protected]> Signed-off-by: Mark Rutland <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Joe Perches <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-12tools/perf: Convert ACCESS_ONCE() to READ_ONCE()Mark Rutland1-1/+1
Recently there was a treewide conversion of ACCESS_ONCE() to {READ,WRITE}_ONCE(), but a new use was introduced concurrently by commit: 1695849735752d2a ("perf mmap: Move perf_mmap and methods to separate mmap.[ch] files") Let's convert this over to READ_ONCE() so that we can remove the ACCESS_ONCE() definitions in subsequent patches. Tested-by: Paul E. McKenney <[email protected]> Signed-off-by: Mark Rutland <[email protected]> Reviewed-by: Paul E. McKenney <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Joe Perches <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
2017-12-12Merge tag 'fixes-for-v4.15-rc4' of ↵Greg Kroah-Hartman48-407/+1144
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus Felipe writes: usb: fixes for v4.15-rc4 We have a few fixes on dwc3: - one fix which only happens with some implementations where we need to wait longer for some commands to finish. - Another fix for high-bandwidth isochronous endpoint programming making sure that we send the correct DATA tokens in the correct sequence - A couple PM fixes on dwc3-of-simple The other synopsys controller driver (dwc2) got a fix for FIFO size programming. Other than these, we have a couple Kconfig fixes making sure that dependencies are properly setup.
2017-12-12selftests: bpf: Adding config fragment CONFIG_CGROUP_BPF=yNaresh Kamboju1-0/+1
CONFIG_CGROUP_BPF=y is required for test_dev_cgroup test case. Signed-off-by: Naresh Kamboju <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2017-12-11torture: Eliminate torture_runnable and perf_runnablePaul E. McKenney3-3/+0
The purpose of torture_runnable is to allow rcutorture and locktorture to be started and stopped via sysfs when they are built into the kernel (as in not compiled as loadable modules). However, the 0444 permissions for both instances of torture_runnable prevent this use case from ever being put into practice. Given that there have been no complaints about this deficiency, it is reasonable to conclude that no one actually makes use of this sysfs capability. The perf_runnable module parameter for rcuperf is in the same situation. This commit therefore removes both torture_runnable instances as well as perf_runnable. Reported-by: Thomas Gleixner <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2017-12-11rcutorture/kvm-build.sh: Skip build directory checkSeongJae Park1-5/+0
Check for build-directory existence and write permissions are provided in both 'kvm-test-1-run.sh' an 'kvm-build.sh'. Because the 'kvm-build.sh' is dependent on 'kvm-test-1-run.sh' ('kvm-build.sh' uses variables that defined from its caller.), these checks are unnecessarily duplicated. This commit therefore removes the check in from the 'kvm-build.sh' script. Signed-off-by: SeongJae Park <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2017-12-11rcutorture: Simplify functions.sh include pathSeongJae Park5-5/+5
Inclusions of 'functions.sh' from 'kvm-test-1-run.sh' and 'kvm-recheck*.sh' use its absolute path. Because the directory containing 'functions.sh' is already in PATH, the full path is unnecessary. This commit therefore simplifies the inclusions to use the short relative path. Signed-off-by: SeongJae Park <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2017-12-11rcutorture: Simplify loggingSeongJae Park2-24/+12
Both the 'kvm.sh' and 'kvm-test-1-run.sh' scripts log messages by printing the message to 'stdout' and then also printing it into the log file. Generation of the message thus occurs twice, once for 'stdout' and once for the log file. Moreover, many of the messages contain 'date' output, which results in date being invoked twice (once for stdout print, once for log file write). As a result, the date information in stdout and log file can differ, which could cause confusion. This commit therefore simplifies the logging procedure by using 'tee'. Signed-off-by: SeongJae Park <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
2017-12-11rcutorture/kvm-recheck-*: Improve result directory readability checkSeongJae Park3-3/+3
The kvm-recheck-(lock|rcu|rcuperf).sh scripts check whether the user-specified results directory exists. If not, it prints out error message that says the specified directory is unreadable. To make the message more precise, this commit adds a readability check. Fixes: 2193e1604eac ("rcutorture: Abstract kvm-recheck.sh") Signed-off-by: SeongJae Park <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
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