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* selftests/bpf: fix broken buildAlexei Starovoitov2017-03-131-0/+18
| | | | | | | | | | | | Recent merge of 'linux-kselftest-4.11-rc1' tree broke bpf test build. None of the tests were building and test_verifier.c had tons of compiler errors. Fix it and add #ifdef CAP_IS_SUPPORTED to support old versions of libcap. Tested on centos 6.8 and 7 Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* give up on gcc ilog2() constant optimizationsLinus Torvalds2017-03-021-11/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc-7 has an "optimization" pass that completely screws up, and generates the code expansion for the (impossible) case of calling ilog2() with a zero constant, even when the code gcc compiles does not actually have a zero constant. And we try to generate a compile-time error for anybody doing ilog2() on a constant where that doesn't make sense (be it zero or negative). So now gcc7 will fail the build due to our sanity checking, because it created that constant-zero case that didn't actually exist in the source code. There's a whole long discussion on the kernel mailing about how to work around this gcc bug. The gcc people themselevs have discussed their "feature" in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72785 but it's all water under the bridge, because while it looked at one point like it would be solved by the time gcc7 was released, that was not to be. So now we have to deal with this compiler braindamage. And the only simple approach seems to be to just delete the code that tries to warn about bad uses of ilog2(). So now "ilog2()" will just return 0 not just for the value 1, but for any non-positive value too. It's not like I can recall anybody having ever actually tried to use this function on any invalid value, but maybe the sanity check just meant that such code never made it out in public. Reported-by: Laura Abbott <labbott@redhat.com> Cc: John Stultz <john.stultz@linaro.org>, Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds2017-03-016-1/+21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull IDR rewrite from Matthew Wilcox: "The most significant part of the following is the patch to rewrite the IDR & IDA to be clients of the radix tree. But there's much more, including an enhancement of the IDA to be significantly more space efficient, an IDR & IDA test suite, some improvements to the IDR API (and driver changes to take advantage of those improvements), several improvements to the radix tree test suite and RCU annotations. The IDR & IDA rewrite had a good spin in linux-next and Andrew's tree for most of the last cycle. Coupled with the IDR test suite, I feel pretty confident that any remaining bugs are quite hard to hit. 0-day did a great job of watching my git tree and pointing out problems; as it hit them, I added new test-cases to be sure not to be caught the same way twice" Willy goes on to expand a bit on the IDR rewrite rationale: "The radix tree and the IDR use very similar data structures. Merging the two codebases lets us share the memory allocation pools, and results in a net deletion of 500 lines of code. It also opens up the possibility of exposing more of the features of the radix tree to users of the IDR (and I have some interesting patches along those lines waiting for 4.12) It also shrinks the size of the 'struct idr' from 40 bytes to 24 which will shrink a fair few data structures that embed an IDR" * 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax: (32 commits) radix tree test suite: Add config option for map shift idr: Add missing __rcu annotations radix-tree: Fix __rcu annotations radix-tree: Add rcu_dereference and rcu_assign_pointer calls radix tree test suite: Run iteration tests for longer radix tree test suite: Fix split/join memory leaks radix tree test suite: Fix leaks in regression2.c radix tree test suite: Fix leaky tests radix tree test suite: Enable address sanitizer radix_tree_iter_resume: Fix out of bounds error radix-tree: Store a pointer to the root in each node radix-tree: Chain preallocated nodes through ->parent radix tree test suite: Dial down verbosity with -v radix tree test suite: Introduce kmalloc_verbose idr: Return the deleted entry from idr_remove radix tree test suite: Build separate binaries for some tests ida: Use exceptional entries for small IDAs ida: Move ida_bitmap to a percpu variable Reimplement IDR and IDA using the radix tree radix-tree: Add radix_tree_iter_delete ...
| * radix tree test suite: Remove types.hMatthew Wilcox2017-02-132-0/+9
| | | | | | | | | | | | | | Move the pieces we still need to tools/include and update a few implicit includes. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * tools: Provide a definition of WARN_ONMatthew Wilcox2017-01-281-0/+8
| | | | | | | | | | | | | | | | | | The definition of WARN_ON being used by the radix tree test suite was deficient in two ways: it did not provide a return value, and it stopped execution instead of continuing. This version of WARN_ON tells you which file & line the assertion was triggered in. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| * radix tree test suite: Remove duplicate bitops codeMatthew Wilcox2017-01-283-1/+4
| | | | | | | | | | | | | | | | | | By adding __set_bit and __clear_bit to the tools include directory, we can share the bitops code. This reveals an include loop between kernel.h, log2.h, bitmap.h and bitops.h. Break it the same way as the kernel does; by moving the kernel.h include from bitops.h to bitmap.h. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2017-02-221-1/+22
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: "Highlights: 1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini Varadhan. 2) Simplify classifier state on sk_buff in order to shrink it a bit. From Willem de Bruijn. 3) Introduce SIPHASH and it's usage for secure sequence numbers and syncookies. From Jason A. Donenfeld. 4) Reduce CPU usage for ICMP replies we are going to limit or suppress, from Jesper Dangaard Brouer. 5) Introduce Shared Memory Communications socket layer, from Ursula Braun. 6) Add RACK loss detection and allow it to actually trigger fast recovery instead of just assisting after other algorithms have triggered it. From Yuchung Cheng. 7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot. 8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert. 9) Export MPLS packet stats via netlink, from Robert Shearman. 10) Significantly improve inet port bind conflict handling, especially when an application is restarted and changes it's setting of reuseport. From Josef Bacik. 11) Implement TX batching in vhost_net, from Jason Wang. 12) Extend the dummy device so that VF (virtual function) features, such as configuration, can be more easily tested. From Phil Sutter. 13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric Dumazet. 14) Add new bpf MAP, implementing a longest prefix match trie. From Daniel Mack. 15) Packet sample offloading support in mlxsw driver, from Yotam Gigi. 16) Add new aquantia driver, from David VomLehn. 17) Add bpf tracepoints, from Daniel Borkmann. 18) Add support for port mirroring to b53 and bcm_sf2 drivers, from Florian Fainelli. 19) Remove custom busy polling in many drivers, it is done in the core networking since 4.5 times. From Eric Dumazet. 20) Support XDP adjust_head in virtio_net, from John Fastabend. 21) Fix several major holes in neighbour entry confirmation, from Julian Anastasov. 22) Add XDP support to bnxt_en driver, from Michael Chan. 23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan. 24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi. 25) Support GRO in IPSEC protocols, from Steffen Klassert" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits) Revert "ath10k: Search SMBIOS for OEM board file extension" net: socket: fix recvmmsg not returning error from sock_error bnxt_en: use eth_hw_addr_random() bpf: fix unlocking of jited image when module ronx not set arch: add ARCH_HAS_SET_MEMORY config net: napi_watchdog() can use napi_schedule_irqoff() tcp: Revert "tcp: tcp_probe: use spin_lock_bh()" net/hsr: use eth_hw_addr_random() net: mvpp2: enable building on 64-bit platforms net: mvpp2: switch to build_skb() in the RX path net: mvpp2: simplify MVPP2_PRS_RI_* definitions net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT net: mvpp2: remove unused register definitions net: mvpp2: simplify mvpp2_bm_bufs_add() net: mvpp2: drop useless fields in mvpp2_bm_pool and related code net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue' net: mvpp2: release reference to txq_cpu[] entry after unmapping net: mvpp2: handle too large value in mvpp2_rx_time_coal_set() net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set() net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set ...
| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2017-02-171-0/+7
| |\ \
| * | | tools: Sync {,tools/}include/uapi/linux/bpf.hMickaël Salaün2017-02-101-1/+22
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tools version of this header is out of date; update it to the latest version from kernel header. Synchronize with the following commits: * b95a5c4db09b ("bpf: add a longest prefix match trie map implementation") * a5e8c07059d0 ("bpf: add bpf_probe_read_str helper") * d1b662adcdb8 ("bpf: allow option for setting bpf_l4_csum_replace from scratch") Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Daniel Mack <daniel@zonque.org> Cc: David S. Miller <davem@davemloft.net> Cc: Gianluca Borello <g.borello@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2017-02-202-0/+23
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "On the kernel side the main changes in this cycle were: - Add Intel Kaby Lake CPU support (Srinivas Pandruvada) - AMD uncore driver updates for fam17 (Janakarajan Natarajan) - Intel/PT updates and core events optimizations and cleanups (Alexander Shishkin) - cgroups events fixes (David Carrillo-Cisneros) - kprobes improvements (Masami Hiramatsu) - ... plus misc fixes and updates. On the tooling side the main changes were: - Support clang build in tools/{perf,lib/{bpf,traceevent,api}} with CC=clang, to, for instance, take advantage of better warnings (Arnaldo Carvalho de Melo): - Introduce the 'delta-abs' 'perf diff' compute method, that orders the histogram entries by the absolute value of the percentage delta for a function in two perf.data files, i.e. the functions that changed the most (increase or decrease in samples) comes first (Namhyung Kim) - Add support for parsing Intel uncore vendor event files and add uncore vendor events for the Intel server processors (Haswell, Broadwell, IvyBridge), Xeon Phi (Knights Landing) and Broadwell DE (Andi Kleen) - Introduce 'perf ftrace' a perf front end to the kernel's ftrace function and function_graph tracer, defaulting to the "function_graph" tracer, more work will be done in reviving this effort, forward porting it from its initial patch submission (Namhyung Kim) - Add 'e' and 'c' hotkeys to expand/collapse call chains for a single hist entry in the 'perf report' and 'perf top' TUI (Jiri Olsa) - Account thread wait time (off CPU time) separately: sleep, iowait and preempt, based on the prev_state of the last event, show the breakdown when using "perf sched timehist --state" (Namhyumg Kim) - Add more triggers to switch the output file (perf.data.TIMESTAMP). Now, in addition to switching to a different output file when receiving a SIGUSR2, one can also specify file size and time based triggers: perf record -a --switch-output=signal is equivalent to what we had before: perf record -a --switch-output While we can also ask for the file to be "sliced" by size, taking into account that that will happen only when we get woken up by the kernel, i.e. one has to take into account the --mmap-pages (the size of the perf mmap ring buffer): perf record -a --switch-output=2G will break the perf.data output into multiple files limited to 2GB of samples, right when generating the output. For time based samples, alert() will be used, so to have 1 minute limited perf.data output files: perf record -a --switch-output=1m (Jiri Olsa) - Improve 'perf trace' (Arnaldo Carvalho de Melo) - 'perf kallsyms' toy tool to look for extended symbol information on the running kernel and demonstrate the machine/thread/symbol APIs for use in other tools, such as 'perf probe' (Arnaldo Carvalho de Melo) - ... plus tons of other changes, see the shortlog and Git log for details" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (131 commits) perf tools: Add missing parse_events_error() prototype perf pmu: Fix check for unset alias->unit array perf tools: Be consistent on the type of map->symbols[] interator perf intel pt decoder: clang has no -Wno-override-init perf evsel: Do not put a variable sized type not at the end of a struct perf probe: Avoid accessing uninitialized 'map' variable perf tools: Do not put a variable sized type not at the end of a struct perf record: Do not put a variable sized type not at the end of a struct perf tests: Synthesize struct instead of using field after variable sized type perf bench numa: Make sure dprintf() is not defined Revert "perf bench futex: Sanitize numeric parameters" tools lib subcmd: Make it an error to pass a signed value to OPTION_UINTEGER tools: Set the maximum optimization level according to the compiler being used tools: Suppress request for warning options not existent in clang samples/bpf: Reset global variables samples/bpf: Ignore already processed ELF sections samples/bpf: Add missing header perf symbols: dso->name is an array, no need to check it against NULL perf tests record: No need to test an array against NULL perf symbols: No need to check if sym->name is NULL ...
| * | tools include: Introduce linux/compiler-gcc.hArnaldo Carvalho de Melo2017-02-132-5/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To match the kernel headers structure, setting up things that are specific to gcc or to some specific version of gcc. It gets included by linux/compiler.h when gcc is the compiler being used. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fabcqfq4asodq9t158hcs8t3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | tools include: Add a __fallthrough statementArnaldo Carvalho de Melo2017-02-081-0/+9
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For cases where implicit fall through case labels are intended, to let us inform that to gcc >= 7: CC /tmp/build/perf/util/string.o util/string.c: In function 'perf_atoll': util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=] if (*p) ^ util/string.c:24:3: note: here case '\0': ^~~~ So we introduce: #define __fallthrough __attribute__ ((fallthrough)) And use it in such cases. 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: William Cohen <wcohen@redhat.com> Link: http://lkml.kernel.org/n/tip-qnpig0xfop4hwv6k4mv1wts5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* / bpf: kernel header files need to be copied into the tools directoryStephen Rothwell2017-02-151-0/+7
|/ | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2016-12-241-229/+364
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "On the kernel side there's two x86 PMU driver fixes and a uprobes fix, plus on the tooling side there's a number of fixes and some late updates" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) perf sched timehist: Fix invalid period calculation perf sched timehist: Remove hardcoded 'comm_width' check at print_summary perf sched timehist: Enlarge default 'comm_width' perf sched timehist: Honour 'comm_width' when aligning the headers perf/x86: Fix overlap counter scheduling bug perf/x86/pebs: Fix handling of PEBS buffer overflows samples/bpf: Move open_raw_sock to separate header samples/bpf: Remove perf_event_open() declaration samples/bpf: Be consistent with bpf_load_program bpf_insn parameter tools lib bpf: Add bpf_prog_{attach,detach} samples/bpf: Switch over to libbpf perf diff: Do not overwrite valid build id perf annotate: Don't throw error for zero length symbols perf bench futex: Fix lock-pi help string perf trace: Check if MAP_32BIT is defined (again) samples/bpf: Make perf_event_read() static uprobes: Fix uprobes on MIPS, allow for a cache flush after ixol breakpoint creation samples/bpf: Make samples more libbpf-centric tools lib bpf: Add flags to bpf_create_map() tools lib bpf: use __u32 from linux/types.h ...
| * tools lib bpf: Sync {tools,}/include/uapi/linux/bpf.hJoe Stringer2016-12-151-229/+364
| | | | | | | | | | | | | | | | | | | | | | | | | | The tools version of this header is out of date; update it to the latest version from the kernel headers. Signed-off-by: Joe Stringer <joe@ovn.org> Acked-by: Wang Nan <wangnan0@huawei.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Link: http://lkml.kernel.org/r/20161209024620.31660-2-joe@ovn.org [ Sync it harder, after merging with what was in net-next via perf/urgent via torvalds/master to get BPG_PROG_(AT|DE)TACH, etc ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | tools: enable endian checks for all sparse buildsMichael S. Tsirkin2016-12-151-4/+0
| | | | | | | | | | | | | | We dropped need for __CHECK_ENDIAN__ for linux, this mirrors this for tools. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* | tools: add more bitmap functionsMatthew Wilcox2016-12-151-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I need the following functions for the radix tree: bitmap_fill bitmap_empty bitmap_full Copy the implementations from include/linux/bitmap.h Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | tools: add WARN_ON_ONCEMatthew Wilcox2016-12-151-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "Radix tree patches for 4.10", v3. Mostly these are improvements; the only bug fixes in here relate to multiorder entries (which are unused in the 4.9 tree). This patch (of 32): The radix tree uses its own buggy WARN_ON_ONCE. Replace it with the definition from asm-generic/bug.h Link: http://lkml.kernel.org/r/1480369871-5271-37-git-send-email-mawilcox@linuxonhyperv.com Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge tag 'arm64-upstream' of ↵Linus Torvalds2016-12-141-0/+4
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Catalin Marinas: - struct thread_info moved off-stack (also touching include/linux/thread_info.h and include/linux/restart_block.h) - cpus_have_cap() reworked to avoid __builtin_constant_p() for static key use (also touching drivers/irqchip/irq-gic-v3.c) - uprobes support (currently only for native 64-bit tasks) - Emulation of kernel Privileged Access Never (PAN) using TTBR0_EL1 switching to a reserved page table - CPU capacity information passing via DT or sysfs (used by the scheduler) - support for systems without FP/SIMD (IOW, kernel avoids touching these registers; there is no soft-float ABI, nor kernel emulation for AArch64 FP/SIMD) - handling of hardware watchpoint with unaligned addresses, varied lengths and offsets from base - use of the page table contiguous hint for kernel mappings - hugetlb fixes for sizes involving the contiguous hint - remove unnecessary I-cache invalidation in flush_cache_range() - CNTHCTL_EL2 access fix for CPUs with VHE support (ARMv8.1) - boot-time checks for writable+executable kernel mappings - simplify asm/opcodes.h and avoid including the 32-bit ARM counterpart and make the arm64 kernel headers self-consistent (Xen headers patch merged separately) - Workaround for broken .inst support in certain binutils versions * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (60 commits) arm64: Disable PAN on uaccess_enable() arm64: Work around broken .inst when defective gas is detected arm64: Add detection code for broken .inst support in binutils arm64: Remove reference to asm/opcodes.h arm64: Get rid of asm/opcodes.h arm64: smp: Prevent raw_smp_processor_id() recursion arm64: head.S: Fix CNTHCTL_EL2 access on VHE system arm64: Remove I-cache invalidation from flush_cache_range() arm64: Enable HIBERNATION in defconfig arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN arm64: xen: Enable user access before a privcmd hvc call arm64: Handle faults caused by inadvertent user access with PAN enabled arm64: Disable TTBR0_EL1 during normal kernel execution arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1 arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro arm64: Factor out PAN enabling/disabling into separate uaccess_* macros arm64: Update the synchronous external abort fault description selftests: arm64: add test for unaligned/inexact watchpoint handling arm64: Allow hw watchpoint of length 3,5,6 and 7 arm64: hw_breakpoint: Handle inexact watchpoint addresses ...
| * hw_breakpoint: Allow watchpoint of length 3,5,6 and 7Pratyush Anand2016-11-181-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We only support breakpoint/watchpoint of length 1, 2, 4 and 8. If we can support other length as well, then user may watch more data with less number of watchpoints (provided hardware supports it). For example: if we have to watch only 4th, 5th and 6th byte from a 64 bit aligned address, we will have to use two slots to implement it currently. One slot will watch a half word at offset 4 and other a byte at offset 6. If we can have a watchpoint of length 3 then we can watch it with single slot as well. ARM64 hardware does support such functionality, therefore adding these new definitions in generic layer. Signed-off-by: Pratyush Anand <panand@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
* | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2016-12-125-0/+51
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "This update is pretty big and almost exclusively includes tooling changes, because v4.9's LTS status forced to completion most of the pending kernel side hardware enablement work and because we tried to freeze core perf work a bit to give a time window for the fuzzing efforts. The diff is large mostly due to the JSON hardware event tables added for Intel and Power8 CPUs. This was a popular feature request from people working close to hardware and from the HPC community. Tree size is big because this added the CPU event tables for over a decade of Intel CPUs. Future changes for a CPU vendor alrady support should be much smaller, as events for new models are added. The new events are listed in 'perf list', for the CPU model the tool is running on. If you find an interesting event it can be used as-is: $ perf stat -a -e l2_lines_out.pf_clean sleep 1 Performance counter stats for 'system wide': 7,860,403 l2_lines_out.pf_clean 1.000624918 seconds time elapsed The event lists can be searched the usual 'perf list' fashion for (case insensitive) substrings as well: $ perf list l2_lines_out List of pre-defined events (to be used in -e): cache: l2_lines_out.demand_clean [Clean L2 cache lines evicted by demand] l2_lines_out.demand_dirty [Dirty L2 cache lines evicted by demand] l2_lines_out.dirty_all [Dirty L2 cache lines filling the L2] l2_lines_out.pf_clean [Clean L2 cache lines evicted by L2 prefetch] l2_lines_out.pf_dirty [Dirty L2 cache lines evicted by L2 prefetch] etc. There's a few high level categories as well that can be listed: 'cache', 'floating point', 'frontend', 'memory', 'pipeline', 'virtual memory'. Existing generic events and workflows should work as-is. The only kernel side change is a late breaking fix for an older regression, related to Intel BTS, LBR and PT feature interaction. On the tooling side there are three new tools / major features: - The new 'perf c2c' tool provides means for Shared Data C2C/HITM analysis. This allows you to track down cacheline contention. The tool is based on x86's load latency and precise store facility events provided by Intel CPUs. It was tested by Joe Mario and has proven to be useful, finding some cacheline contentions. Joe also wrote a blog about c2c tool with examples: https://joemario.github.io/blog/2016/09/01/c2c-blog/ excerpt of the content on this site: At a high level, “perf c2c” will show you: * The cachelines where false sharing was detected. * The readers and writers to those cachelines, and the offsets where those accesses occurred. * The pid, tid, instruction addr, function name, binary object name for those readers and writers. * The source file and line number for each reader and writer. * The average load latency for the loads to those cachelines. * Which numa nodes the samples a cacheline came from and which CPUs were involved. Using perf c2c is similar to using the Linux perf tool today. First collect data with “perf c2c record”, then generate a report output with “perf c2c report” There one finds extensive details on using the tool, with tips on reducing the volume of samples while still capturing enough to do its job. (Dick Fowles, Joe Mario, Don Zickus, Jiri Olsa) - The new 'perf sched timehist' tool provides tailored analysis of scheduling events. Example usage: perf sched record -- sleep 1 perf sched timehist By default it shows the individual schedule events, including the wait time (time between sched-out and next sched-in events for the task), the task scheduling delay (time between wakeup and actually running) and run time for the task: time cpu task name wait time sch delay run time [tid/pid] (msec) (msec) (msec) -------- ------ ---------------- --------- --------- -------- 1.874569 [0011] gcc[31949] 0.014 0.000 1.148 1.874591 [0010] gcc[31951] 0.000 0.000 0.024 1.874603 [0010] migration/10[59] 3.350 0.004 0.011 1.874604 [0011] <idle> 1.148 0.000 0.035 1.874723 [0005] <idle> 0.016 0.000 1.383 1.874746 [0005] gcc[31949] 0.153 0.078 0.022 ... Times are in msec.usec. (David Ahern, Namhyung Kim) - Add CPU vendor hardware event tables: Add JSON files with vendor event naming for Intel and Power8 processors, allowing users of tools like oprofile to keep using the event names they are used to, as well as people reading vendor documentation, where such naming is used. (Andi Kleen, Sukadev Bhattiprolu) You should see all the new events with 'perf list' and you should be able to search them, for example 'perf list miss' will list all the myriads of miss events. Other tooling features added were: - Cross-arch annotation support: o Improve ARM support in the annotation code, affecting 'perf annotate', 'perf report' and live annotation in 'perf top' (Kim Phillips) o Initial support for PowerPC in the annotation code (Ravi Bangoria) o Support AArch64 in the 'annotate' code, native/local and cross-arch/remote (Kim Phillips) - Allow considering just events in a given time interval, via the '--time start.s.ms,end.s.ms' command line, added to 'perf kmem', 'perf report', 'perf sched timehist' and 'perf script' (David Ahern) - Add option to stop printing a callchain at one of a given group of symbol names (David Ahern) - Track memory freed in 'perf kmem stat' (David Ahern) - Allow querying and setting .perfconfig variables (Taeung Song) - Show branch information in callchains (predicted, TSX aborts, loop iteractions, etc) (Jin Yao) - Dynamicly change verbosity level by pressing 'V' in the 'perf top/report' hists TUI browser (Alexis Berlemont) - Implement 'perf trace --delay' in the same fashion as in 'perf record --delay', to skip sampling workload initialization events (Alexis Berlemont) - Make vendor named events case insensitive in 'perf list', i.e. 'perf list LONGEST_LAT' works just the same as 'perf list longest_lat' (Andi Kleen) - Add unwinding support for jitdump (Stefano Sanfilippo) Tooling infrastructure changes: - Support linking perf with clang and LLVM libraries, initially statically, but this limitation will be lifted and shared libraries, when available, will be preferred to the static build, that should, as with other features, be enabled explicitly (Wang Nan) - Add initial support (and perf test entry) for tooling hooks, starting with 'record_start' and 'record_end', that will have as its initial user the eBPF infrastructure, where perf_ prefixed functions will be JITed and run when such hooks are called (Wang Nan) - Implement assorted libbpf improvements (Wang Nan)" ... and lots of other changes, features, cleanups and refactorings I did not list, see the shortlog and the git log for details" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (220 commits) perf/x86: Fix exclusion of BTS and LBR for Goldmont perf tools: Explicitly document that --children is enabled by default perf sched timehist: Cleanup idle_max_cpu handling perf sched timehist: Handle zero sample->tid properly perf callchain: Introduce callchain_cursor__copy() perf sched: Cleanup option processing perf sched timehist: Improve error message when analyzing wrong file perf tools: Move perf build related variables under non fixdep leg perf tools: Force fixdep compilation at the start of the build perf tools: Move PERF-VERSION-FILE target into rules area perf build: Check LLVM version in feature check perf annotate: Show raw form for jump instruction with indirect target perf tools: Add non config targets perf tools: Cleanup build directory before each test perf tools: Move python/perf.so target into rules area perf tools: Move install-gtk target into rules area tools build: Move tabs to spaces where suitable tools build: Make the .cmd file more readable perf clang: Compile BPF script using builtin clang support perf clang: Support compile IR to BPF object and add testcase ...
| * | tools: Update asm-generic/mman-common.h copy from the kernelArnaldo Carvalho de Melo2016-10-281-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To get the defines introduced in the commit e8c24d3a23a4 ("x86/pkeys: Allocation/free syscalls") Silencing this perf build warning: Warning: tools/include/uapi/asm-generic/mman-common.h differs from kernel Need to change 'perf trace' to beautify those syscalls, as soon as booting with a kernel with it. 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: http://lkml.kernel.org/n/tip-yev9rexu02cl7cjeozzmrl9t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | tools lib: Add for_each_clear_bit macroJiri Olsa2016-10-244-0/+46
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | Adding for_each_clear_bit macro plus all its the necessary backbone functions. Taken from related kernel code. It will be used in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-cayv2zbqi0nlmg5sjjxs1775@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* / bpf: add initial suite for selftestsDaniel Borkmann2016-10-181-0/+24
|/ | | | | | | | | | | | | | | | | | | | Add a start of a test suite for kernel selftests. This moves test_verifier and test_maps over to tools/testing/selftests/bpf/ along with various code improvements and also adds a script for invoking test_bpf module. The test suite can simply be run via selftest framework, f.e.: # cd tools/testing/selftests/bpf/ # make # make run_tests Both test_verifier and test_maps were kind of misplaced in samples/bpf/ directory and we were looking into adding them to selftests for a while now, so it can be picked up by kbuild bot et al and hopefully also get more exposure and thus new test case additions. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* tools: Synchronize tools/include/uapi/linux/bpf.hArnaldo Carvalho de Melo2016-10-061-2/+2
| | | | | | | | | | | | | | | | | | | | | Commit 747ea55e4f78 ("bpf: fix bpf_skb_in_cgroup helper naming") renames BPF_FUNC_skb_in_cgroup to bpf_skb_under_cgroup, triggering this warning while building perf: Warning: tools/include/uapi/linux/bpf.h differs from kernel Update the copy to ack that, no changes needed, as BPF_FUNC_skb_in_cgroup isn't used so far. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-x67d2gq8ct6ko12ex14q8bbx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools include: Add uapi mman.h for each architectureWang Nan2016-09-133-0/+110
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some mmap related macros have different values for different architectures. This patch introduces uapi mman.h for each architectures. Three headers are cloned from kernel include to tools/include: tools/include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman.h tools/include/uapi/linux/mman.h The main part of this patch is generated by following script: macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'` for arch in `ls tools/arch` do [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm src=arch/$arch/include/uapi/asm/mman.h target=tools/arch/$arch/include/uapi/asm/mman.h guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H echo '#ifndef '$guard > $target echo '#define '$guard >> $target [ -f $src ] && for m in $macros do if grep '#define[ \t]*'$m $src > /dev/null 2>&1 then grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target fi done if [ -f $src ] then grep '#include <asm-generic' $src >> $target else echo "#include <asm-generic/mman.h>" >> $target fi echo '#endif' >> $target echo "$target" done exit 0 # Following macros are extracted from: # tools/perf/trace/beauty/mmap.c # # start macro list MADV_DODUMP MADV_DOFORK MADV_DONTDUMP MADV_DONTFORK MADV_DONTNEED MADV_HUGEPAGE MADV_HWPOISON MADV_MERGEABLE MADV_NOHUGEPAGE MADV_NORMAL MADV_RANDOM MADV_REMOVE MADV_SEQUENTIAL MADV_SOFT_OFFLINE MADV_UNMERGEABLE MADV_WILLNEED MAP_32BIT MAP_ANONYMOUS MAP_DENYWRITE MAP_EXECUTABLE MAP_FILE MAP_FIXED MAP_GROWSDOWN MAP_HUGETLB MAP_LOCKED MAP_NONBLOCK MAP_NORESERVE MAP_POPULATE MAP_PRIVATE MAP_SHARED MAP_STACK MAP_UNINITIALIZED MREMAP_FIXED MREMAP_MAYMOVE PROT_EXEC PROT_GROWSDOWN PROT_GROWSUP PROT_NONE PROT_READ PROT_SEM PROT_WRITE Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1473684871-209320-2-git-send-email-wangnan0@huawei.com [ Added new files to tools/perf/MANIFEST to fix the detached tarball build, add mman.h for ARC ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Copy coresight-pmu.h header file needed by perf toolsMathieu Poirier2016-08-231-0/+39
| | | | | | | | | | | | | Directly accessing kernel files is not allowed anymore. As such making file coresight-pmu.h accessible by the perf tools and complain if this copy strays from the one found in the main kernel tree. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vince Weaver <vince@deater.net> Link: http://lkml.kernel.org/r/1470932464-726-2-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Introduce tools/include/linux/time64.h for *SEC_PER_*SEC macrosArnaldo Carvalho de Melo2016-08-231-0/+12
| | | | | | | | | | | | | | | And remove it from tools/perf/{perf,util}.h, making code that needs these macros to include linux/time64.h instead, to match how this is used in the kernel sources. 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: Steven Rostedt <rostedt@goodmis.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-e69fc1pvkgt57yvxqt6eunyg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib: Reinstate strlcpy() header guard with __UCLIBC__Vineet Gupta2016-08-181-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf tools build in recent kernels spews splat when cross compiling with uClibc: | CC util/alias.o | In file included from tools/perf/util/../ui/../util/cache.h:8:0, | from tools/perf/util/../ui/helpline.h:7, | from tools/perf/util/debug.h:8, | from arch/../util/cpumap.h:9, | from arch/../util/env.h:5, | from arch/common.h:4, | from arch/common.c:3: | tools/include/linux/string.h:12:15: warning: redundant redeclaration of ‘strlcpy’ [-Wredundant-decls] | extern size_t strlcpy(char *dest, const char *src, size_t size); ^ This is after commit 61a6445e463a31 ("tools lib: Guard the strlcpy() header with __GLIBC__"). The problem is uClibc also defines __GLIBC__ for exported headers for applications. So add that specific check to not trip for uClibc. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petri Gynther <pgynther@google.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: linux-snps-arc@lists.infradead.org Link: http://lkml.kernel.org/r/1471537703-16439-1-git-send-email-vgupta@synopsys.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* toops: Sync tools/include/uapi/linux/bpf.h with the kernelArnaldo Carvalho de Melo2016-08-091-1/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The way we're using kernel headers in tools/ now, with a copy that is made to the same path prefixed by "tools/" plus checking if that copy got stale, i.e. if the kernel counterpart changed, helps in keeping track with new features that may be useful for tools to exploit. For instance, looking at all the changes to bpf.h since it was last copied to tools/include brings this to toolers' attention: Need to investigate this one to check how to run a program via perf, setting up a BPF event, that will take advantage of the way perf already calls clang/LLVM, sets up the event and runs the workload in a single command line, helping in debugging such semi cooperative programs: 96ae52279594 ("bpf: Add bpf_probe_write_user BPF helper to be called in tracers") This one needs further investigation about using the feature it improves in 'perf trace' to do some tcpdumpin' mixed with syscalls, tracepoints, probe points, callgraphs, etc: 555c8a8623a3 ("bpf: avoid stack copy and use skb ctx for event output") Add tracing just packets that are related to some container to that mix: 4a482f34afcc ("cgroup: bpf: Add bpf_skb_in_cgroup_proto") 4ed8ec521ed5 ("cgroup: bpf: Add BPF_MAP_TYPE_CGROUP_ARRAY") Definetely needs to have example programs accessing task_struct from a bpf proggie started from 'perf trace': 606274c5abd8 ("bpf: introduce bpf_get_current_task() helper") Core networking related, XDP: 6ce96ca348a9 ("bpf: add XDP_TX xdp_action for direct forwarding") 6a773a15a1e8 ("bpf: add XDP prog type for early driver filter") 13c5c240f789 ("bpf: add bpf_get_hash_recalc helper") d2485c4242a8 ("bpf: add bpf_skb_change_type helper") 6578171a7ff0 ("bpf: add bpf_skb_change_proto helper") Changes detected by the tools build system: $ make -C tools/perf O=/tmp/build/perf install-bin make: Entering directory '/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: tools/include/uapi/linux/bpf.h differs from kernel INSTALL GTK UI CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o <SNIP> $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <ast@fb.com> Cc: Brenden Blanco <bblanco@plumgrid.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David Ahern <dsahern@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-difq4ts1xvww6eyfs9e7zlft@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib: Add bitmap_and functionJiri Olsa2016-08-021-0/+17
| | | | | | | | | | | | Add support to perform logical and on bitmaps. Code taken from kernel's include/linux/bitmap.h. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib: Add bitmap_scnprintf functionJiri Olsa2016-08-021-0/+10
| | | | | | | | | | | | | Add support to print bitmap list. Code mostly taken from kernel's bitmap_list_string. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-3-git-send-email-jolsa@kernel.org [ s/bitmap_snprintf/bitmap_scnprintf/g as it is a scnprintf wrapper, having the same semantics wrt return value ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib: Add bitmap_alloc functionJiri Olsa2016-08-021-0/+10
| | | | | | | | | | | | Adding bitmap_alloc function to dynamically allocate bitmap. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160802113302.GA7479@krava Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Copy linux/{hash,poison}.h and check for driftArnaldo Carvalho de Melo2016-07-182-4/+192
| | | | | | | | | | | | | We were also using this directly from the kernel sources, the two last cases, fix it. 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: http://lkml.kernel.org/n/tip-7o14xvacqcjc5llc7gvjjyl8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Copy the bitops files accessed from the kernel and check for driftArnaldo Carvalho de Melo2016-07-185-5/+188
| | | | | | | | | | | | copy some more kernel files accessed from tools/, check for drift. 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: http://lkml.kernel.org/n/tip-omz8xdyvvxgjiuqzwj6ecm6j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Simplify BITS_PER_LONG definePeter Zijlstra2016-07-151-21/+2
| | | | | | | | | | | | | | | | | | | | | | | | Do it using (__CHAR_BIT__ * __SIZEOF_LONG__), simpler, works everywhere, reduces the complexity by ditching CONFIG_64BIT, that was being synthesized from yet another set of defines, which proved fragile, breaking the build on linux-next for no obvious reasons. Committer Note: Except on: gcc version 4.1.2 20080704 (Red Hat 4.1.2-55) Fallback to __WORDSIZE in that case... Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160715072243.GP30154@twins.programming.kicks-ass.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Make "__always_inline" just "inline" on AndroidArnaldo Carvalho de Melo2016-07-141-0/+11
| | | | | | | | | | | | | | | | | | As the gcc there is producing tons of: "warning: always_inline function might not be inlinable" At least on android-ndk-r12/platforms/android-24/arch-arm, so, for the time being, use this big hammer. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Chris Phlipot <cphlipot0@gmail.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: http://lkml.kernel.org/n/tip-97l3eg3fnk5shmo4rsyyvj2t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Fix up BITS_PER_LONG settingArnaldo Carvalho de Melo2016-07-131-5/+19
| | | | | | | | | | | | | | | It was set based on CONFIG_64BIT, that is available only when using Kconfig, which we're working towards but not to the point of having this CONFIG variable set, so synthesize it from available compiler defined defines, __SIZEOF_LONG__ or, lacking that, __WORDSIZE. 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: http://lkml.kernel.org/n/tip-og5fmkr17856lhupacihwxvb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Work around BITS_PER_LONG related build failure in objtoolIngo Molnar2016-07-131-1/+3
| | | | | | | | | | | | | | | | | | The objtool build fails with the recent changes to the bits-per-long headers: tools/include/linux/bitops.h:12:0: error: "BITS_PER_LONG" redefined [-Werror] Which got introduced by: bb9707077b4e tools: Copy the bitsperlong.h files from the kernel Work it around for the time being. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* tools: Copy the bitsperlong.h files from the kernelArnaldo Carvalho de Melo2016-07-124-0/+42
| | | | | | | | | | | | | | | We use it in bitops/__ffs.h and bitops/atomic.h, that we also got from the kernel, but were getting it from either newer systems that carry it in /usr/include, or from the kernel sources, that we decided not to touch from tools/ code. Fix it. 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: http://lkml.kernel.org/n/tip-lwqvgbuitjmrdpjmjp6zqnyx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Copy uapi/linux/hw_breakpoint.h from the kernelArnaldo Carvalho de Melo2016-07-121-0/+30
| | | | | | | | | | | | | | | | To allow the build to complete on older systems, where those files are either not uptodate, lacking some recent additions or not present at all. And check if the copy drifts from the kernel. 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: http://lkml.kernel.org/n/tip-3jz31pz4nw526uko5da9e7o3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib bpf: Copy bpf.h and bpf_common.h from the kernelArnaldo Carvalho de Melo2016-07-122-0/+444
| | | | | | | | | | | | | | | | | | | | To allow the build to complete on older systems, where those files are either not uptodate, lacking some recent additions or not present at all. And check if the copy drifts from the kernel, as in this synthetic test: BUILD: Doing 'make -j4' parallel build Warning: tools/include/linux/bpf.h differs from kernel Warning: tools/include/linux/bpf_common.h differs from kernel 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: http://lkml.kernel.org/n/tip-5plvi2gq4x469dcyybiu226q@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarksArnaldo Carvalho de Melo2016-07-121-0/+9
| | | | | | | | | | | | | | We can't access kernel files directly from tools/, so copy the required bits, and make sure that we detect when the original files, in the kernel, gets modified. 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: http://lkml.kernel.org/n/tip-z7e76274ch5j4nugv048qacb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Add copy of perf_event.h to tools/include/linux/Arnaldo Carvalho de Melo2016-07-121-0/+983
| | | | | | | | | | | | | | | | | | | | We shouldn't use headers from the kernel sources directly, instead we should use the system's headers or in cases where that isn't possible, like with perf_event.h, where the introduction of kernel features such as perf_event_attr.{write_backwards,sample_max_stack} and PERF_EVENT_IOC_PAUSE_OUTPUT take some time to become available in /usr/include/linux/perf_event.h we need a copy. Do it and check for source code drift, emitting a warning when changes are detected. 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: http://lkml.kernel.org/n/tip-v6aks5un3s5pehory6f42nrl@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools lib: Guard the strlcpy() header with __GLIBC__Arnaldo Carvalho de Melo2016-07-121-1/+1
| | | | | | | | | | | | | | | Better to whitelist it for libraries that require it (glibc) than blacklist it with the ones that don't (uclibc, musl libc, etc). Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-52ih0m63a2n63tanpy6yj682@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf tools: Uninline scnprintf() and vscnprint()Arnaldo Carvalho de Melo2016-07-121-25/+3
| | | | | | | | | | | | | | They were in tools/include/linux/kernel.h, requiring that it in turn included stdio.h, which is way too heavy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-855h8olnkot9v0dajuee1lo3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* tools: Introduce str_error_r()Arnaldo Carvalho de Melo2016-07-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | The tools so far have been using the strerror_r() GNU variant, that returns a string, be it the buffer passed or something else. But that, besides being tricky in cases where we expect that the function using strerror_r() returns the error formatted in a provided buffer (we have to check if it returned something else and copy that instead), breaks the build on systems not using glibc, like Alpine Linux, where musl libc is used. So, introduce yet another wrapper, str_error_r(), that has the GNU interface, but uses the portable XSI variant of strerror_r(), so that users rest asured that the provided buffer is used and it is what is returned. 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: http://lkml.kernel.org/n/tip-d4t42fnf48ytlk8rjxs822tf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2016-03-241-0/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "This tree contains various perf fixes on the kernel side, plus three hw/event-enablement late additions: - Intel Memory Bandwidth Monitoring events and handling - the AMD Accumulated Power Mechanism reporting facility - more IOMMU events ... and a final round of perf tooling updates/fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) perf llvm: Use strerror_r instead of the thread unsafe strerror one perf llvm: Use realpath to canonicalize paths perf tools: Unexport some methods unused outside strbuf.c perf probe: No need to use formatting strbuf method perf help: Use asprintf instead of adhoc equivalents perf tools: Remove unused perf_pathdup, xstrdup functions perf tools: Do not include stringify.h from the kernel sources tools include: Copy linux/stringify.h from the kernel tools lib traceevent: Remove redundant CPU output perf tools: Remove needless 'extern' from function prototypes perf tools: Simplify die() mechanism perf tools: Remove unused DIE_IF macro perf script: Remove lots of unused arguments perf thread: Rename perf_event__preprocess_sample_addr to thread__resolve perf machine: Rename perf_event__preprocess_sample to machine__resolve perf tools: Add cpumode to struct perf_sample perf tests: Forward the perf_sample in the dwarf unwind test perf tools: Remove misplaced __maybe_unused perf list: Fix documentation of :ppp perf bench numa: Fix assertion for nodes bitfield ...
| * tools include: Copy linux/stringify.h from the kernelArnaldo Carvalho de Melo2016-03-231-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | There is code in tools/ that is directly including this file from the kernel, and this is verboten for a while, copy it so that the next csets can fix this situation. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-e0r3nks2uai020ndghvxv5qw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | tools: Copy hashtable.h into tools directoryJosh Poimboeuf2016-03-094-3/+155
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Copy hashtable.h from include/linux/tools.h. It's needed by objtool in the next patch in the series. Add some includes that it needs, and remove references to kernel-specific features like RCU and __read_mostly. Also change some if its dependency headers' includes to use quotes instead of brackets so gcc can find them. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bernd Petrovitsch <bernd@petrovitsch.priv.at> Cc: Borislav Petkov <bp@alien8.de> Cc: Chris J Arges <chris.j.arges@canonical.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Pedro Alves <palves@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/be3bef72f6540d8a510515408119d968a0e18179.1457502970.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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