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2018-11-21bpf: adding tests for map_in_map helpber in libbpfNikita V. Shirokov
adding test/example of bpf_map__set_inner_map_fd usage Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21bpf: adding support for map in map in libbpfNikita V. Shirokov
idea is pretty simple. for specified map (pointed by struct bpf_map) we would provide descriptor of already loaded map, which is going to be used as a prototype for inner map. proposed workflow: 1) open bpf's object (bpf_object__open) 2) create bpf's map which is going to be used as a prototype 3) find (by name) map-in-map which you want to load and update w/ descriptor of inner map w/ a new helper from this patch 4) load bpf program w/ bpf_object__load Signed-off-by: Nikita V. Shirokov <tehnerd@tehnerd.com> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21bpf: libbpf: don't specify prog name if kernel doesn't support itStanislav Fomichev
Use recently added capability check. See commit 23499442c319 ("bpf: libbpf: retry map creation without the name") for rationale. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21bpf: libbpf: remove map name retry from bpf_create_map_xattrStanislav Fomichev
Instead, check for a newly created caps.name bpf_object capability. If kernel doesn't support names, don't specify the attribute. See commit 23499442c319 ("bpf: libbpf: retry map creation without the name") for rationale. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21bpf, libbpf: introduce bpf_object__probe_caps to test BPF capabilitiesStanislav Fomichev
It currently only checks whether kernel supports map/prog names. This capability check will be used in the next two commits to skip setting prog/map names. Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21libbpf: make sure bpf headers are c++ include-ableStanislav Fomichev
Wrap headers in extern "C", to turn off C++ mangling. This simplifies including libbpf in c++ and linking against it. v2 changes: * do the same for btf.h v3 changes: * test_libbpf.cpp to test for possible future c++ breakages Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21bpf: fix a libbpf loader issueYonghong Song
Commit 2993e0515bb4 ("tools/bpf: add support to read .BTF.ext sections") added support to read .BTF.ext sections from an object file, create and pass prog_btf_fd and func_info to the kernel. The program btf_fd (prog->btf_fd) is initialized to be -1 to please zclose so we do not need special handling dur prog close. Passing -1 to the kernel, however, will cause loading error. Passing btf_fd 0 to the kernel if prog->btf_fd is invalid fixed the problem. Fixes: 2993e0515bb4 ("tools/bpf: add support to read .BTF.ext sections") Reported-by: Andrey Ignatov <rdna@fb.com> Reported-by: Emre Cantimur <haydum@fb.com> Tested-by: Andrey Ignatov <rdna@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-21Merge tag 'perf-urgent-for-mingo-4.20-20181121' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes: - Update kernel ABI headers, one of them lead to a small change in the ioctl 'cmd' beautifier in 'perf trace' to support the new ISO7816 commands. (Arnaldo Carvalho de Melo) - Restore proper cwd on return from mnt namespace (Jiri Olsa) - Add feature check for the get_current_dir_name() function used in the namespace fix from Jiri, that is not available in systems such as Alpine Linux, which uses the musl libc (Arnaldo Carvalho de Melo) - Fix crash in 'perf record' when synthesizing the unit for events such as 'cpu-clock' (Jiri Olsa) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-21Merge tag 'linux-cpupower-4.20-rc4' of ↵Rafael J. Wysocki
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux Pull cpupower utility updates for 4.20-rc4 from Shuah Khan: "This cpupower update for Linux 4.20-rc4 consists of compile fixes to allow use of outside build flags and override of CFLAGS from Jiri Olsa, and fix to compilation with STATIC=true from Konstantin Khlebnikov." * tag 'linux-cpupower-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux: tools cpupower: Override CFLAGS assignments tools cpupower debug: Allow to use outside build flags tools/power/cpupower: fix compilation with STATIC=true
2018-11-20tools/bpf: bpftool: add support for func typesYonghong Song
This patch added support to print function signature if btf func_info is available. Note that ksym now uses function name instead of prog_name as prog_name has a limit of 16 bytes including ending '\0'. The following is a sample output for selftests test_btf with file test_btf_haskv.o for translated insns and jited insns respectively. $ bpftool prog dump xlated id 1 int _dummy_tracepoint(struct dummy_tracepoint_args * arg): 0: (85) call pc+2#bpf_prog_2dcecc18072623fc_test_long_fname_1 1: (b7) r0 = 0 2: (95) exit int test_long_fname_1(struct dummy_tracepoint_args * arg): 3: (85) call pc+1#bpf_prog_89d64e4abf0f0126_test_long_fname_2 4: (95) exit int test_long_fname_2(struct dummy_tracepoint_args * arg): 5: (b7) r2 = 0 6: (63) *(u32 *)(r10 -4) = r2 7: (79) r1 = *(u64 *)(r1 +8) ... 22: (07) r1 += 1 23: (63) *(u32 *)(r0 +4) = r1 24: (95) exit $ bpftool prog dump jited id 1 int _dummy_tracepoint(struct dummy_tracepoint_args * arg): bpf_prog_b07ccb89267cf242__dummy_tracepoint: 0: push %rbp 1: mov %rsp,%rbp ...... 3c: add $0x28,%rbp 40: leaveq 41: retq int test_long_fname_1(struct dummy_tracepoint_args * arg): bpf_prog_2dcecc18072623fc_test_long_fname_1: 0: push %rbp 1: mov %rsp,%rbp ...... 3a: add $0x28,%rbp 3e: leaveq 3f: retq int test_long_fname_2(struct dummy_tracepoint_args * arg): bpf_prog_89d64e4abf0f0126_test_long_fname_2: 0: push %rbp 1: mov %rsp,%rbp ...... 80: add $0x28,%rbp 84: leaveq 85: retq Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: enhance test_btf file testing to test func infoYonghong Song
Change the bpf programs test_btf_haskv.c and test_btf_nokv.c to have two sections, and enhance test_btf.c test_file feature to test btf func_info returned by the kernel. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: refactor to implement btf_get_from_id() in lib/bpfYonghong Song
The function get_btf() is implemented in tools/bpf/bpftool/map.c to get a btf structure given a map_info. This patch refactored this function to be function btf_get_from_id() in tools/lib/bpf so that it can be used later. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: do not use pahole if clang/llvm can generate BTF sectionsYonghong Song
Add additional checks in tools/testing/selftests/bpf and samples/bpf such that if clang/llvm compiler can generate BTF sections, do not use pahole. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: add support to read .BTF.ext sectionsYonghong Song
The .BTF section is already available to encode types. These types can be used for map pretty print. The whole .BTF will be passed to the kernel as well for which kernel can verify and return to the user space for pretty print etc. The llvm patch at https://reviews.llvm.org/D53736 will generate .BTF section and one more section .BTF.ext. The .BTF.ext section encodes function type information and line information. Note that this patch set only supports function type info. The functionality is implemented in libbpf. The .BTF section can be directly loaded into the kernel, and the .BTF.ext section cannot. The loader may need to do some relocation and merging, similar to merging multiple code sections, before loading into the kernel. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: extends test_btf to test load/retrieve func_type infoYonghong Song
A two function bpf program is loaded with btf and func_info. After successful prog load, the bpf_get_info syscall is called to retrieve prog info to ensure the types returned from the kernel matches the types passed to the kernel from the user space. Several negative tests are also added to test loading/retriving of func_type info. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: add new fields for program load in lib/bpfYonghong Song
The new fields are added for program load in lib/bpf so application uses api bpf_load_program_xattr() is able to load program with btf and func_info data. This functionality will be used in next patch by bpf selftest test_btf. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: sync kernel uapi bpf.h header to tools directoryYonghong Song
The kernel uapi bpf.h is synced to tools directory. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: Add tests for BTF_KIND_FUNC_PROTO and BTF_KIND_FUNCMartin KaFai Lau
This patch adds unit tests for BTF_KIND_FUNC_PROTO and BTF_KIND_FUNC to test_btf. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20tools/bpf: Sync kernel btf.h headerMartin KaFai Lau
The kernel uapi btf.h is synced to the tools directory. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-11-20objtool: Fix segfault in .cold detection with -ffunction-sectionsArtem Savkov
Because find_symbol_by_name() traverses the same lists as read_symbols(), changing sym->name in place without copying it affects the result of find_symbol_by_name(). In the case where a ".cold" function precedes its parent in sec->symbol_list, it can result in a function being considered a parent of itself. This leads to function length being set to 0 and other consequent side-effects including a segfault in add_switch_table(). The effects of this bug are only visible when building with -ffunction-sections in KCFLAGS. Fix by copying the search string instead of modifying it in place. Signed-off-by: Artem Savkov <asavkov@redhat.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 13810435b9a7 ("objtool: Support GCC 8's cold subfunctions") Link: http://lkml.kernel.org/r/910abd6b5a4945130fd44f787c24e07b9e07c8da.1542736240.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-20objtool: Fix double-free in .cold detection error pathArtem Savkov
If read_symbols() fails during second list traversal (the one dealing with ".cold" subfunctions) it frees the symbol, but never deletes it from the list/hash_table resulting in symbol being freed again in elf_close(). Fix it by just returning an error, leaving cleanup to elf_close(). Signed-off-by: Artem Savkov <asavkov@redhat.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 13810435b9a7 ("objtool: Support GCC 8's cold subfunctions") Link: http://lkml.kernel.org/r/beac5a9b7da9e8be90223459dcbe07766ae437dd.1542736240.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-11-19selftests: mlxsw: Add a test for VxLAN floodingIdo Schimmel
The device stores flood records in a singly linked list where each record stores up to three IPv4 addresses of remote VTEPs. The test verifies that packets are correctly flooded in various cases such as deletion of a record in the middle of the list. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: mlxsw: Add a test for VxLAN configurationIdo Schimmel
Test various aspects of VxLAN offloading which are specific to mlxsw, such as sanitization of invalid configurations and offload indication. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d_port_8472: New testPetr Machata
This simple wrapper reruns the VXLAN ping test with a port number of 8472. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add an ECN decap testPetr Machata
Test that when decapsulating from VXLAN, the values of inner and outer TOS are handled appropriately. Because VXLAN driver on its own won't produce the arbitrary TOS combinations necessary to test this feature, simply open-code a single ICMP packet and have mausezahn assemble it. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add an ECN encap testPetr Machata
Test that ECN bits in the VXLAN envelope are correctly deduced from the overlay packet. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add a TOS testPetr Machata
Test that TOS is inherited from the tunneled packet into the envelope as configured at the VXLAN device. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add a TTL testPetr Machata
This tests whether TTL of VXLAN envelope packets is properly set based on the device configuration. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Reconfigure & rerun testsPetr Machata
The ordering of the topology creation can have impact on whether a driver is successful in offloading VXLAN. Therefore add a pseudo-test that reshuffles bits of the topology, and then reruns the same suite of tests again to make sure that the new setup is supported as well. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add unicast testPetr Machata
Test that when sending traffic to a learned MAC address, the traffic is forwarded accurately only to the right endpoint. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add flood testPetr Machata
Test that when sending traffic to an unlearned MAC address, the traffic is flooded to both remote VXLAN endpoints. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: vxlan_bridge_1d: Add ping testPetr Machata
Test end-to-end reachability between local and remote endpoints. Note that because learning is disabled on the VXLAN device, the ICMP requests will end up being flooded to all remotes. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: Add a skeleton of vxlan_bridge_1dPetr Machata
This skeleton sets up a topology with three VXLAN endpoints: one "local", possibly offloaded, and two "remote", formed using veth pairs and likely purely software bridges. The "local" endpoint is connected to host systems by a VLAN-unaware bridge. Since VXLAN tunnels must be unique per namespace, each of the "remote" endpoints is in its own namespace. H3 forms the bridge between the three domains. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: lib: Add link_stats_rx_errors_get()Petr Machata
Such a function will be useful for counting malformed packets in the ECN decap test. To that end, introduce a common handler for handling stat-fetching, and reuse it in link_stats_tx_packets_get() and link_stats_rx_errors_get(). Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: ping{6, }_do(): Allow passing ping argumentsPetr Machata
Make the ping routine more generic by allowing passing arbitrary ping command-line arguments. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: ping{6, }_test(): Add description argumentPetr Machata
Have ping_test() recognize an optional argument with a description of the test. This is handy if there are several ping test, to make it clear which is which. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: lib: Add in_ns()Petr Machata
In order to run a certain command inside another network namespace, it's possible to use "ip netns exec ns command". However then one can't use functions defined in lib.sh or a test suite. One option is to do "ip netns exec ns bash -c command", provided that all functions that one wishes to use (and their dependencies) are published using "export -f". That may not be practical. Therefore, introduce a helper in_ns(), which wraps a given command in a boilerplate of "ip netns exec" and "source lib.sh", thus making all library functions available. (Custom functions that a script wishes to run within a namespace still need to be exported.) Because quotes in "$@" aren't recognized in heredoc, hand-expand the array in an explicit for loop, leveraging printf %q to handle proper quoting. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-19selftests: forwarding: lib: Support NUM_NETIFS of 0Petr Machata
So far the case of NUM_NETIFS of 0 has not been interesting. However if one wishes to reuse the lib.sh routines in a setup of a separate namespace, being able to import like this is handy. Therefore replace the {1..$NUM_NETIFS} references, which cause iteration over 1 and 0, with an explicit for loop like we do in setup_wait() and tc_offload_check(), so that for NUM_NETIFS of 0 no iteration is done. Signed-off-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-20tools: add selftest for BPF_F_ZERO_SEEDLorenz Bauer
Check that iterating two separate hash maps produces the same order of keys if BPF_F_ZERO_SEED is used. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-20tools: sync linux/bpf.hLorenz Bauer
Synchronize changes to linux/bpf.h from * "bpf: allow zero-initializing hash map seed" * "bpf: move BPF_F_QUERY_EFFECTIVE after map flags" Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-20bpf: libbpf: retry map creation without the nameStanislav Fomichev
Since commit 88cda1c9da02 ("bpf: libbpf: Provide basic API support to specify BPF obj name"), libbpf unconditionally sets bpf_attr->name for maps. Pre v4.14 kernels don't know about map names and return an error about unexpected non-zero data. Retry sys_bpf without a map name to cover older kernels. v2 changes: * check for errno == EINVAL as suggested by Daniel Borkmann Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-11-19perf tools beauty ioctl: Support new ISO7816 commandsArnaldo Carvalho de Melo
Introduced in: ad8c0eaa0a41 ("tty/serial_core: add ISO7816 infrastructure") Now 'perf trace' will be able to pretty-print the 'cmd' ioctl arg when used in capable systems with software emitting those commands. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-7bds48dhckfnleie08mit314@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19tools uapi asm-generic: Synchronize ioctls.hArnaldo Carvalho de Melo
To pick up the changes in: ad8c0eaa0a41 ("tty/serial_core: add ISO7816 infrastructure") That is a change that imply a change to be made in tools/perf/trace/beauty/ioctl.c to make 'perf trace' ioctl syscall argument beautifier to support these new commands: TIOCGISO7816 and TIOCSISO7816. This is not yet done automatically by a script like is done for some other headers, for instance: $ tools/perf/trace/beauty/drm_ioctl.sh | head #ifndef DRM_COMMAND_BASE #define DRM_COMMAND_BASE 0x40 #endif static const char *drm_ioctl_cmds[] = { [0x00] = "VERSION", [0x01] = "GET_UNIQUE", [0x02] = "GET_MAGIC", [0x03] = "IRQ_BUSID", [0x04] = "GET_MAP", [0x05] = "GET_CLIENT", $ So we will need to change tools/perf/trace/beauty/ioctl.c in a follow up patch until we switch to a generator script. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-zin76fe6iykqsilvo6u47f9o@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19tools arch x86: Update tools's copy of cpufeatures.hArnaldo Carvalho de Melo
To get the changes in the following csets: ace6485a0326 ("x86/cpufeatures: Enumerate MOVDIR64B instruction") 33823f4d63f7 ("x86/cpufeatures: Enumerate MOVDIRI instruction") No tools were affected, copy it to silence this perf tool build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Link: https://lkml.kernel.org/n/tip-83kcyqa1qkxkhm1s7q3hbpel@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19tools headers uapi: Synchronize i915_drm.hArnaldo Carvalho de Melo
To pick up the changes in: 900ccf30f9e1 ("drm/i915: Only force GGTT coherency w/a on required chipsets") No changes are required in tools/ nor does anything gets automatically generated to be used in the 'perf trace' syscall arg beautifiers. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h' diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h Cc: Chris Wilson <chris@chris-wilson.co.uk> 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-t2vor2wegv41gt5n49095kly@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19perf tools: Restore proper cwd on return from mnt namespaceJiri Olsa
When reporting on 'record' server we try to retrieve/use the mnt namespace of the profiled tasks. We use following API with cookie to hold the return namespace, roughly: nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc) setns(newns, 0); ... new ns related open.. ... nsinfo__mountns_exit(struct nscookie *nc) setns(nc->oldns) Once finished we setns to old namespace, which also sets the current working directory (cwd) to "/", trashing the cwd we had. This is mostly fine, because we use absolute paths almost everywhere, but it screws up 'perf diff': # perf diff failed to open perf.data: No such file or directory (try 'perf record' first) ... Adding the current working directory to be part of the cookie and restoring it in the nsinfo__mountns_exit call. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Krister Johansen <kjlx@templeofstupid.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 843ff37bb59e ("perf symbols: Find symbols in different mount namespace") Link: http://lkml.kernel.org/r/20181101170001.30019-1-jolsa@kernel.org [ No need to check for NULL args for free(), use zfree() for struct members ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19tools build feature: Check if get_current_dir_name() is availableArnaldo Carvalho de Melo
As the namespace support code will use this, which is not available in some non _GNU_SOURCE libraries such as Android's bionic used in my container build tests (r12b and r15c at the moment). 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-x56ypm940pwclwu45d7jfj47@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-11-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2018-11-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Fix some potentially uninitialized variables and use-after-free in kvaser_usb can drier, from Jimmy Assarsson. 2) Fix leaks in qed driver, from Denis Bolotin. 3) Socket leak in l2tp, from Xin Long. 4) RSS context allocation fix in bnxt_en from Michael Chan. 5) Fix cxgb4 build errors, from Ganesh Goudar. 6) Route leaks in ipv6 when removing exceptions, from Xin Long. 7) Memory leak in IDR allocation handling of act_pedit, from Davide Caratti. 8) Use-after-free of bridge vlan stats, from Nikolay Aleksandrov. 9) When MTU is locked, do not force DF bit on ipv4 tunnels. From Sabrina Dubroca. 10) When NAPI cached skb is reused, we must set it to the proper initial state which includes skb->pkt_type. From Eric Dumazet. 11) Lockdep and non-linear SKB handling fix in tipc from Jon Maloy. 12) Set RX queue properly in various tuntap receive paths, from Matthew Cover. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (61 commits) tuntap: fix multiqueue rx ipv6: Fix PMTU updates for UDP/raw sockets in presence of VRF tipc: don't assume linear buffer when reading ancillary data tipc: fix lockdep warning when reinitilaizing sockets net-gro: reset skb->pkt_type in napi_reuse_skb() tc-testing: tdc.py: Guard against lack of returncode in executed command tc-testing: tdc.py: ignore errors when decoding stdout/stderr ip_tunnel: don't force DF when MTU is locked MAINTAINERS: Add entry for CAKE qdisc net: bridge: fix vlan stats use-after-free on destruction socket: do a generic_file_splice_read when proto_ops has no splice_read net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs Revert "net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs" net: phy: mdio-gpio: Fix working over slow can_sleep GPIOs net/sched: act_pedit: fix memory leak when IDR allocation fails net: lantiq: Fix returned value in case of error in 'xrx200_probe()' ipv6: fix a dst leak when removing its exception net: mvneta: Don't advertise 2.5G modes drivers/net/ethernet/qlogic/qed/qed_rdma.h: fix typo net/mlx4: Fix UBSAN warning of signed integer overflow ...
2018-11-18Merge tag 'libnvdimm-fixes-4.20-rc3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "A small batch of fixes for v4.20-rc3. The overflow continuation fix addresses something that has been broken for several releases. Arguably it could wait even longer, but it's a one line fix and this finishes the last of the known address range scrub bug reports. The revert addresses a lockdep regression. The unit tests are not critical to fix, but no reason to hold this fix back. Summary: - Address Range Scrub overflow continuation handling has been broken since it was initially merged. It was only recently that error injection and platform-BIOS support enabled this corner case to be exercised. - The recent attempt to provide more isolation for the kernel Address Range Scrub state machine from userapace initiated sessions triggers a lockdep report. Revert and try again at the next merge window. - Fix a kasan reported buffer overflow in libnvdimm unit test infrastrucutre (nfit_test)" * tag 'libnvdimm-fixes-4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: Revert "acpi, nfit: Further restrict userspace ARS start requests" acpi, nfit: Fix ARS overflow continuation tools/testing/nvdimm: Fix the array size for dimm devices.
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