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2018-09-05if_link: add IFLA_TARGET_NETNSID aliasChristian Brauner
This adds IFLA_TARGET_NETNSID as an alias for IFLA_IF_NETNSID for RTM_*LINK requests. The new name is clearer and also aligns with the newly introduced IFA_TARGET_NETNSID propert for RTM_*ADDR requests. Signed-off-by: Christian Brauner <christian@brauner.io> Suggested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Cc: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-05libbpf: Remove the duplicate checking of function storageTaeung Song
After the commit eac7d84519a3 ("tools: libbpf: don't return '.text' as a program for multi-function programs"), bpf_program__next() in bpf_object__for_each_program skips the function storage such as .text, so eliminate the duplicate checking. Cc: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-09-05selftests: memory-hotplug: add required configsLei Yang
add CONFIG_MEMORY_HOTREMOVE=y in config without this config, /sys/devices/system/memory/memory*/removable always return 0, I endup getting an early skip during test Signed-off-by: Lei Yang <Lei.Yang@windriver.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
2018-09-05selftests/efivarfs: add required kernel configsLei Yang
add config file Signed-off-by: Lei Yang <Lei.Yang@windriver.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
2018-09-05selftests: add headers_install to lib.mkAnders Roxell
If the kernel headers aren't installed we can't build all the tests. Add a new make target rule 'khdr' in the file lib.mk to generate the kernel headers and that gets include for every test-dir Makefile that includes lib.mk If the testdir in turn have its own sub-dirs the top_srcdir needs to be set to the linux-rootdir to be able to generate the kernel headers. Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reviewed-by: Fathi Boudra <fathi.boudra@linaro.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
2018-09-05perf tests: Fix record+probe_libc_inet_pton.sh without ping's debuginfoArnaldo Carvalho de Melo
When we don't have the iputils-debuginfo package installed, i.e. when we don't have the DWARF information needed to resolve ping's samples, we end up failing this 'perf test' entry: # perf test ping 62: probe libc's inet_pton & backtrace it with ping : Ok # rpm -e iputils-debuginfo # perf test ping 62: probe libc's inet_pton & backtrace it with ping : FAILED! # Fix it to accept "[unknown]" where the symbol + offset, when resolved, is expected. I think this will fail in the other arches as well, but since I can't test now, I'm leaving s390x and ppc cases as-is. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Sandipan Das <sandipan@linux.vnet.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 7903a7086723 ("perf script: Show symbol offsets by default") Link: https://lkml.kernel.org/n/tip-hnizqwqrs03vcq1b74yao0f6@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2018-09-04Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc fixes from Andrew Morton: "17 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: nilfs2: convert to SPDX license tags drivers/dax/device.c: convert variable to vm_fault_t type lib/Kconfig.debug: fix three typos in help text checkpatch: add __ro_after_init to known $Attribute mm: fix BUG_ON() in vmf_insert_pfn_pud() from VM_MIXEDMAP removal uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name memory_hotplug: fix kernel_panic on offline page processing checkpatch: add optional static const to blank line declarations test ipc/shm: properly return EIDRM in shm_lock() mm/hugetlb: filter out hugetlb pages if HUGEPAGE migration is not supported. mm/util.c: improve kvfree() kerneldoc tools/vm/page-types.c: fix "defined but not used" warning tools/vm/slabinfo.c: fix sign-compare warning kmemleak: always register debugfs file mm: respect arch_dup_mmap() return value mm, oom: fix missing tlb_finish_mmu() in __oom_reap_task_mm(). mm: memcontrol: print proper OOM header when no eligible victim left
2018-09-04tools/vm/page-types.c: fix "defined but not used" warningNaoya Horiguchi
debugfs_known_mountpoints[] is not used any more, so let's remove it. Link: http://lkml.kernel.org/r/1535102651-19418-1-git-send-email-n-horiguchi@ah.jp.nec.com Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-09-04tools/vm/slabinfo.c: fix sign-compare warningNaoya Horiguchi
Currently we get the following compiler warning: slabinfo.c:854:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s->object_size < min_objsize) ^ due to the mismatch of signed/unsigned comparison. ->object_size and ->slab_size are never expected to be negative, so let's define them as unsigned int. [n-horiguchi@ah.jp.nec.com: convert everything - none of these can be negative] Link: http://lkml.kernel.org/r/20180826234947.GA9787@hori1.linux.bs1.fc.nec.co.jp Link: http://lkml.kernel.org/r/1535103134-20239-1-git-send-email-n-horiguchi@ah.jp.nec.com Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-09-04perf map: Turn some pr_warning() to pr_debug()Arnaldo Carvalho de Melo
Annoying when using it with --stdio/--stdio2, so just turn them debug, we can get those using -v. 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-t3684lkugnf1w4lwcmpj9ivm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-04perf trace: Use the raw_syscalls:sys_enter for the augmented syscallsArnaldo Carvalho de Melo
Now we combine what comes from the "bpf-output" event, i.e. what is added in the augmented_syscalls.c BPF program via the __augmented_syscalls__ BPF map, i.e. the payload we get with raw_syscalls:sys_enter tracepoints plus the pointer contents, right after that payload, with the raw_syscall:sys_exit also added, without augmentation, in the augmented_syscalls.c program. The end result is that for the hooked syscalls, we get strace like output with pointer expansion, something that wasn't possible before with just raw_syscalls:sys_enter + raw_syscalls:sys_exit. E.g.: # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c ping -c 2 ::1 0.000 ( 0.008 ms): ping/19573 openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC) = 3 0.036 ( 0.006 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libcap.so.2, flags: CLOEXEC) = 3 0.070 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libidn.so.11, flags: CLOEXEC) = 3 0.095 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libcrypto.so.1.1, flags: CLOEXEC) = 3 0.127 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libresolv.so.2, flags: CLOEXEC) = 3 0.156 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libm.so.6, flags: CLOEXEC) = 3 0.181 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC) = 3 0.212 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libz.so.1, flags: CLOEXEC) = 3 0.242 ( 0.004 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libdl.so.2, flags: CLOEXEC) = 3 0.266 ( 0.003 ms): ping/19573 openat(dfd: CWD, filename: /lib64/libpthread.so.0, flags: CLOEXEC) = 3 0.709 ( 0.006 ms): ping/19573 open(filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) = 3 PING ::1(::1) 56 data bytes 1.133 ( 0.011 ms): ping/19573 connect(fd: 5, uservaddr: { .family: INET6, port: 1025, addr: ::1 }, addrlen: 28) = 0 64 bytes from ::1: icmp_seq=1 ttl=64 time=0.033 ms 1.234 ( 0.036 ms): ping/19573 sendto(fd: 4<socket:[1498931]>, buff: 0x555e5b975720, len: 64, addr: { .family: INET6, port: 58, addr: ::1 }, addr_len: 28) = 64 64 bytes from ::1: icmp_seq=2 ttl=64 time=0.120 ms --- ::1 ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.033/0.076/0.120/0.044 ms 1002.060 ( 0.129 ms): ping/19573 sendto(fd: 4<socket:[1498931]>, buff: 0x555e5b975720, len: 64, flags: CONFIRM, addr: { .family: INET6, port: 58, addr: ::1 }, addr_len: 28) = 64 # # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c cat tools/perf/examples/bpf/hello.c #include <stdio.h> int syscall_enter(openat)(void *args) { puts("Hello, world\n"); return 0; } license(GPL); 0.000 ( 0.008 ms): cat/20054 openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC) = 3 0.020 ( 0.005 ms): cat/20054 openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC) = 3 0.176 ( 0.011 ms): cat/20054 open(filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) = 3 0.243 ( 0.006 ms): cat/20054 openat(dfd: CWD, filename: tools/perf/examples/bpf/hello.c) = 3 # Now to think how to hook on all syscalls, fallbacking to the non-augmented raw_syscalls:sys_enter payload. Probably the best way is to use a BPF_MAP_TYPE_PROG_ARRAY just like samples/bpf/tracex5_kern.c does. 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-nlt60y69o26xi59z5vtpdrj5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-04perf trace: Setup augmented_args in the raw_syscalls:sys_enter handlerArnaldo Carvalho de Melo
Without using something to augment the raw_syscalls:sys_enter tracepoint payload with the pointer contents, this will work just like before, i.e. the augmented_args arg will be NULL and the augmented_args_size will be 0. This just paves the way for the next cset where we will associate the trace__sys_enter tracepoint handler with the augmented "bpf-output" event named "__augmented_args__". 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-p8uvt2a6ug3uwlhja3cno4la@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-04spi: spidev_test: Improve decoded text part of hex dumpGeert Uytterhoeven
- Print spaces as spaces, - Do not print characters > 126, as they will be shown as garbage in the modern UTF-8 era, - Use a normal period instead of its hexadecimal ASCII value, - Delimit the text part with pipe symbols on both sides (was left side only), without any spaces, to make it clear where the decoded text starts and ends, - Drop a useless comment. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-09-03perf trace: Introduce syscall__augmented_args() methodArnaldo Carvalho de Melo
That will be used by trace__sys_enter when we start combining the augmented syscalls:sys_enter_FOO + syscalls:sys_exit_FOO. 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-iiseo3s0qbf9i3rzn8k597bv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-03perf augmented_syscalls: Avoid optimization to pass older BPF validatorsArnaldo Carvalho de Melo
See https://www.spinics.net/lists/netdev/msg480099.html for the whole discussio, but to make the augmented_syscalls.c BPF program to get built and loaded successfully in a greater range of kernels, add an extra check. Related patch: a60dd35d2e39 ("bpf: change bpf_perf_event_output arg5 type to ARG_CONST_SIZE_OR_ZERO") That is in the kernel since v4.15, I couldn't figure why this is hitting me with 4.17.17, but adding the workaround discussed there makes this work with this fedora kernel and with 4.18.recent. Before: # uname -a Linux seventh 4.17.17-100.fc27.x86_64 #1 SMP Mon Aug 20 15:53:11 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c cat /etc/passwd > /dev/null libbpf: load bpf program failed: Permission denied libbpf: -- BEGIN DUMP LOG --- libbpf: 0: (bf) r6 = r1 1: (b7) r1 = 0 2: (7b) *(u64 *)(r10 -8) = r1 3: (7b) *(u64 *)(r10 -16) = r1 4: (7b) *(u64 *)(r10 -24) = r1 5: (7b) *(u64 *)(r10 -32) = r1 6: (7b) *(u64 *)(r10 -40) = r1 7: (7b) *(u64 *)(r10 -48) = r1 8: (7b) *(u64 *)(r10 -56) = r1 9: (7b) *(u64 *)(r10 -64) = r1 10: (7b) *(u64 *)(r10 -72) = r1 11: (7b) *(u64 *)(r10 -80) = r1 12: (7b) *(u64 *)(r10 -88) = r1 13: (7b) *(u64 *)(r10 -96) = r1 14: (7b) *(u64 *)(r10 -104) = r1 15: (7b) *(u64 *)(r10 -112) = r1 16: (7b) *(u64 *)(r10 -120) = r1 17: (7b) *(u64 *)(r10 -128) = r1 18: (7b) *(u64 *)(r10 -136) = r1 19: (7b) *(u64 *)(r10 -144) = r1 20: (7b) *(u64 *)(r10 -152) = r1 21: (7b) *(u64 *)(r10 -160) = r1 22: (7b) *(u64 *)(r10 -168) = r1 23: (7b) *(u64 *)(r10 -176) = r1 24: (7b) *(u64 *)(r10 -184) = r1 25: (7b) *(u64 *)(r10 -192) = r1 26: (7b) *(u64 *)(r10 -200) = r1 27: (7b) *(u64 *)(r10 -208) = r1 28: (7b) *(u64 *)(r10 -216) = r1 29: (7b) *(u64 *)(r10 -224) = r1 30: (7b) *(u64 *)(r10 -232) = r1 31: (7b) *(u64 *)(r10 -240) = r1 32: (7b) *(u64 *)(r10 -248) = r1 33: (7b) *(u64 *)(r10 -256) = r1 34: (7b) *(u64 *)(r10 -264) = r1 35: (7b) *(u64 *)(r10 -272) = r1 36: (7b) *(u64 *)(r10 -280) = r1 37: (7b) *(u64 *)(r10 -288) = r1 38: (7b) *(u64 *)(r10 -296) = r1 39: (7b) *(u64 *)(r10 -304) = r1 40: (7b) *(u64 *)(r10 -312) = r1 41: (bf) r7 = r10 42: (07) r7 += -312 43: (bf) r1 = r7 44: (b7) r2 = 48 45: (bf) r3 = r6 46: (85) call bpf_probe_read#4 47: (79) r3 = *(u64 *)(r6 +24) 48: (bf) r1 = r10 49: (07) r1 += -256 50: (b7) r8 = 256 51: (b7) r2 = 256 52: (85) call bpf_probe_read_str#45 53: (bf) r1 = r0 54: (67) r1 <<= 32 55: (77) r1 >>= 32 56: (bf) r5 = r0 57: (07) r5 += 56 58: (2d) if r8 > r1 goto pc+1 R0=inv(id=0) R1=inv(id=0,umin_value=256,umax_value=4294967295,var_off=(0x0; 0xffffffff)) R5=inv(id=0) R6=ctx(id=0,off=0,imm=0) R7=fp-312,call_-1 R8=inv256 R10=fp0,call_-1 fp-264=0 59: (b7) r5 = 312 60: (63) *(u32 *)(r10 -264) = r0 61: (67) r5 <<= 32 62: (77) r5 >>= 32 63: (bf) r1 = r6 64: (18) r2 = 0xffff8b9120cc8500 66: (18) r3 = 0xffffffff 68: (bf) r4 = r7 69: (85) call bpf_perf_event_output#25 70: (b7) r0 = 0 71: (95) exit from 58 to 60: R0=inv(id=0) R1=inv(id=0,umax_value=255,var_off=(0x0; 0xff)) R5=inv(id=0) R6=ctx(id=0,off=0,imm=0) R7=fp-312,call_-1 R8=inv256 R10=fp0,call_-1 fp-264=0 60: (63) *(u32 *)(r10 -264) = r0 61: (67) r5 <<= 32 62: (77) r5 >>= 32 63: (bf) r1 = r6 64: (18) r2 = 0xffff8b9120cc8500 66: (18) r3 = 0xffffffff 68: (bf) r4 = r7 69: (85) call bpf_perf_event_output#25 R5 unbounded memory access, use 'var &= const' or 'if (var < const)' libbpf: -- END LOG -- libbpf: failed to load program 'syscalls:sys_enter_openat' libbpf: failed to load object 'tools/perf/examples/bpf/augmented_syscalls.c' bpf: load objects failed: err=-4007: (Kernel verifier blocks program loading) event syntax error: 'tools/perf/examples/bpf/augmented_syscalls.c' \___ Kernel verifier blocks program loading After: # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c cat /etc/passwd > /dev/null 0.000 cat/29249 openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC) 0.008 cat/29249 syscalls:sys_exit_openat:0x3 0.021 cat/29249 openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC) 0.025 cat/29249 syscalls:sys_exit_openat:0x3 0.180 cat/29249 open(filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) 0.185 cat/29249 syscalls:sys_exit_open:0x3 0.242 cat/29249 openat(dfd: CWD, filename: /etc/passwd) 0.245 cat/29249 syscalls:sys_exit_openat:0x3 # It also works with a more recent kernel: # uname -a Linux jouet 4.18.0-00014-g4e67b2a5df5d #6 SMP Thu Aug 30 17:34:17 -03 2018 x86_64 x86_64 x86_64 GNU/Linux # perf trace -e tools/perf/examples/bpf/augmented_syscalls.c cat /etc/passwd > /dev/null 0.000 cat/26451 openat(dfd: CWD, filename: /etc/ld.so.cache, flags: CLOEXEC) 0.020 cat/26451 syscalls:sys_exit_openat:0x3 0.039 cat/26451 openat(dfd: CWD, filename: /lib64/libc.so.6, flags: CLOEXEC) 0.044 cat/26451 syscalls:sys_exit_openat:0x3 0.231 cat/26451 open(filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) 0.238 cat/26451 syscalls:sys_exit_open:0x3 0.278 cat/26451 openat(dfd: CWD, filename: /etc/passwd) 0.282 cat/26451 syscalls:sys_exit_openat:0x3 # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: Gianluca Borello <g.borello@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-wkpsivs1a9afwldbul46btbv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-03perf augmented_syscalls: Check probe_read_str() return separatelyArnaldo Carvalho de Melo
Using a value returned from probe_read_str() to tell how many bytes to copy using perf_event_output() has issues in some older kernels, like 4.17.17-100.fc27.x86_64, so separate the bounds checking done on how many bytes to copy to a separate variable, so that the next patch has only what is being done to make the test pass on older BPF validators. For reference, see the discussion in this thread: https://www.spinics.net/lists/netdev/msg480099.html Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Daniel Borkmann <daniel@iogearbox.net> 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: Yonghong Song <yhs@fb.com> Link: https://lkml.kernel.org/n/tip-jtsapwibyxrnv1xjfsgzp0fj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-09-03Add udmabuf misc deviceGerd Hoffmann
A driver to let userspace turn memfd regions into dma-bufs. Use case: Allows qemu create dmabufs for the vga framebuffer or virtio-gpu ressources. Then they can be passed around to display those guest things on the host. To spice client for classic full framebuffer display, and hopefully some day to wayland server for seamless guest window display. qemu test branch: https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf Cc: David Airlie <airlied@linux.ie> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
2018-09-02tools/bpf: bpftool, add xskmap in map typesPrashant Bhole
When listed all maps, bpftool currently shows (null) for xskmap. Added xskmap type in map_type_name[] to show correct type. Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-09-01selftests/tls: Add test for recv(PEEK) spanning across multiple recordsVakul Garg
Added test case to receive multiple records with a single recvmsg() operation with a MSG_PEEK set. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-31selftests: pmtu: detect correct binary to ping ipv6 addressesSabrina Dubroca
Some systems don't have the ping6 binary anymore, and use ping for everything. Detect the absence of ping6 and try to use ping instead. Fixes: d1f1b9cbf34c ("selftests: net: Introduce first PMTU test") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Acked-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-31selftests: pmtu: maximum MTU for vti4 is 2^16-1-20Sabrina Dubroca
Since commit 82612de1c98e ("ip_tunnel: restore binding to ifaces with a large mtu"), the maximum MTU for vti4 is based on IP_MAX_MTU instead of the mysterious constant 0xFFF8. This makes this selftest fail. Fixes: 82612de1c98e ("ip_tunnel: restore binding to ifaces with a large mtu") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Acked-by: Stefano Brivio <sbrivio@redhat.com> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-09-01 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Add AF_XDP zero-copy support for i40e driver (!), from Björn and Magnus. 2) BPF verifier improvements by giving each register its own liveness chain which allows to simplify and getting rid of skip_callee() logic, from Edward. 3) Add bpf fs pretty print support for percpu arraymap, percpu hashmap and percpu lru hashmap. Also add generic percpu formatted print on bpftool so the same can be dumped there, from Yonghong. 4) Add bpf_{set,get}sockopt() helper support for TCP_SAVE_SYN and TCP_SAVED_SYN options to allow reflection of tos/tclass from received SYN packet, from Nikita. 5) Misc improvements to the BPF sockmap test cases in terms of cgroup v2 interaction and removal of incorrect shutdown() calls, from John. 6) Few cleanups in xdp_umem_assign_dev() and xdpsock samples, from Prashant. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-01bpf: add selftest for bpf's (set|get)_sockopt for SAVE_SYNNikita V. Shirokov
adding selftest for feature, introduced in commit 9452048c79404 ("bpf: add TCP_SAVE_SYN/TCP_SAVED_SYN options for bpf_(set|get)sockopt"). Signed-off-by: Nikita V. Shirokov <tehnerd@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-08-30Merge branches 'doc.2018.08.30a', 'dynticks.2018.08.30b', 'srcu.2018.08.30b' ↵Paul E. McKenney
and 'torture.2018.08.29a' into HEAD doc.2018.08.30a: Documentation updates dynticks.2018.08.30b: RCU flavor consolidation updates and cleanups srcu.2018.08.30b: SRCU updates torture.2018.08.29a: Torture-test updates
2018-08-30rcutorture: Test early boot call_srcu()Paul E. McKenney
Now that SRCU permits call_srcu() to be invoked at early boot, this commit ensures that the rcutorture scripting tests early boot call_srcu(). Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-08-30rcu: Stop testing RCU-bh and RCU-schedPaul E. McKenney
Now that the RCU-bh and RCU-sched update-side functions are simple wrappers around their RCU counterparts, there isn't a whole lot of point in testing them. This commit therefore removes the self-test capability and removes the corresponding kernel-boot parameters. It also updates the various rcutorture .boot files to remove the kernel boot parameters that call for testing RCU-bh and RCU-sched. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-08-30perf annotate: Handle arm64 move instructionsKim Phillips
Add default handler for non-jump instructions. This really only has an effect on instructions that compute a PC-relative address, such as 'adrp,' as seen in these couple of examples: BEFORE: adrp x0, ffff20000aa11000 <kallsyms_token_index+0xce000> AFTER: adrp x0, kallsyms_token_index+0xce000 BEFORE: adrp x23, ffff20000ae94000 <__per_cpu_load> AFTER: adrp x23, __per_cpu_load The implementation is identical to that of s390, but with a slight adjustment for objdump whitespace propagation (arm64 objdump puts spaces after commas, whereas s390's presumably doesn't). The mov__scnprintf() declaration is moved from s390's to arm64's instructions.c because arm64's gets included before s390's. Committer testing: Ran 'perf annotate --stdio2 > /tmp/{before,after}' no diff. Signed-off-by: Kim Phillips <kim.phillips@arm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20180827150807.304110d2e9919a17c832ca48@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf trace beauty: Alias 'umount' to 'umount2'Benjamin Peterson
Before: # perf trace -e *mount* umount /dev/mapper/fedora-home /s 11.576 ( 0.004 ms) umount/3138 umount2(arg0: 94501956754656, arg1: 0, arg2: 1, arg3: 140051050083104, arg4: 4, arg5: 94501956755136) = -1 EINVAL Invalid argument # After: # perf trace -e *mount* umount /s 0.000 ( 9.241 ms): umount/5251 umount2(name: 0x55f74a986480) = 0 Signed-off-by: Benjamin Peterson <benjamin@python.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180828035344.31500-1-benjamin@python.org [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move the display functions to stat-display.cJiri Olsa
Move perf_evlist__print_counters() with all its dependency functions to the stat-display.c object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-44-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'metric_events' to 'struct perf_stat_config'Jiri Olsa
Move the static variable 'metric_events' to 'struct perf_stat_config', so that it can be passed around and used outside 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-43-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'walltime_*' data to 'struct perf_stat_config'Jiri Olsa
Move the static variables 'walltime_*' to 'struct perf_stat_config', so that it can be passed around and used outside 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-42-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Propagate 'struct target' arg to sort_aggr_thread()Jiri Olsa
Propagate the 'struct target' arg to sort_aggr_thread() so that the function does not depend on the 'perf stat' command object local variable 'target' and can be moved out. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-41-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'no_merge' data to 'struct perf_stat_config'Jiri Olsa
Move the static variable 'no_merge' to 'struct perf_stat_config', so that it can be passed around and used outside 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-40-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'big_num' data to 'struct perf_stat_config'Jiri Olsa
Move the static variable 'big_num' to 'struct perf_stat_config', so that it can be passed around and used outside 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-39-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Do not use the global 'evsel_list' in print functionsJiri Olsa
Get rid of the the 'evsel_list' global variable dependency, here we can use the 'evlist' pointer from the evsel. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-38-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move *_aggr_* data to 'struct perf_stat_config'Jiri Olsa
Move the *_aggr_* global variables to 'struct perf_stat_config', so that it can be passed around and used outside 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-37-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move ru_* data to 'struct perf_stat_config'Jiri Olsa
Move the 'ru_*' global variables to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-36-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'print_mixed_hw_group_error' to 'struct perf_stat_config'Jiri Olsa
Move the 'print_mixed_hw_group_error' global variable to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-35-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'print_free_counters_hint' to 'struct perf_stat_config'Jiri Olsa
Move the 'print_free_counters_hint' variable to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-34-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'null_run' to 'struct perf_stat_config'Jiri Olsa
Move the static 'null_run' variable to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-33-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Add 'walltime_nsecs_stats' pointer to 'struct perf_stat_config'Jiri Olsa
Add 'walltime_nsecs_stats' pointer to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. It's initialized to point to stat's walltime_nsecs_stats value. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-32-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Pass 'evlist' to aggr_update_shadow()Jiri Olsa
Pass a 'evlist' argument to aggr_update_shadow(), to get rid of the global 'evsel_list' variable dependency. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-31-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Pass 'struct perf_stat_config' to first_shadow_cpu()Jiri Olsa
Pass a 'struct perf_stat_config' arg to first_shadow_cpu(), so that the function does not depend on the 'perf stat' command object local 'stat_config' variable and can then be moved out. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-30-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'metric_only_len' to 'struct perf_stat_config'Jiri Olsa
Move the static 'metric_only_len' variable to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-29-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'run_count' to 'struct perf_stat_config'Jiri Olsa
Move the static 'run_count' variable to 'struct perf_stat_config', so that it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-28-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Use 'evsel->evlist' instead of 'evsel_list' in collect_all_aliases()Jiri Olsa
Use 'evsel->evlist' instead of 'evsel_list' in collect_all_aliases(), to get rid of the global 'evsel_list' variable dependency. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-27-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Pass 'evlist' argument to print functionsJiri Olsa
Add 'evlist' argument to print functions to get rid of the global 'evsel_list' variable dependency. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-26-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Add 'target' argument to perf_evlist__print_counters()Jiri Olsa
Add 'struct target' argument to perf_evlist__print_counters(), so the function does not depend on the 'perf stat' command object local target and can be moved out. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-25-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-08-30perf stat: Move 'unit_width' to 'struct perf_stat_config'Jiri Olsa
Move the static 'unit_width' variable to 'struct perf_stat_config', so it can be passed around and used outside the 'perf stat' command. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180830063252.23729-24-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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