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2020-07-25selftests/bpf: Add test for bpf hash map iteratorsYonghong Song
Two subtests are added. $ ./test_progs -n 4 ... #4/18 bpf_hash_map:OK #4/19 bpf_percpu_hash_map:OK ... Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184120.590916-1-yhs@fb.com
2020-07-25tools/bpftool: Add bpftool support for bpf map element iteratorYonghong Song
The optional parameter "map MAP" can be added to "bpftool iter" command to create a bpf iterator for map elements. For example, bpftool iter pin ./prog.o /sys/fs/bpf/p1 map id 333 For map element bpf iterator "map MAP" parameter is required. Otherwise, bpf link creation will return an error. Quentin Monnet kindly provided bash-completion implementation for new "map MAP" option. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184119.590799-1-yhs@fb.com
2020-07-25tools/libbpf: Add support for bpf map element iteratorYonghong Song
Add map_fd to bpf_iter_attach_opts and flags to bpf_link_create_opts. Later on, bpftool or selftest will be able to create a bpf map element iterator by passing map_fd to the kernel during link creation time. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184117.590673-1-yhs@fb.com
2020-07-25bpf: Implement bpf iterator for map elementsYonghong Song
The bpf iterator for map elements are implemented. The bpf program will receive four parameters: bpf_iter_meta *meta: the meta data bpf_map *map: the bpf_map whose elements are traversed void *key: the key of one element void *value: the value of the same element Here, meta and map pointers are always valid, and key has register type PTR_TO_RDONLY_BUF_OR_NULL and value has register type PTR_TO_RDWR_BUF_OR_NULL. The kernel will track the access range of key and value during verification time. Later, these values will be compared against the values in the actual map to ensure all accesses are within range. A new field iter_seq_info is added to bpf_map_ops which is used to add map type specific information, i.e., seq_ops, init/fini seq_file func and seq_file private data size. Subsequent patches will have actual implementation for bpf_map_ops->iter_seq_info. In user space, BPF_ITER_LINK_MAP_FD needs to be specified in prog attr->link_create.flags, which indicates that attr->link_create.target_fd is a map_fd. The reason for such an explicit flag is for possible future cases where one bpf iterator may allow more than one possible customization, e.g., pid and cgroup id for task_file. Current kernel internal implementation only allows the target to register at most one required bpf_iter_link_info. To support the above case, optional bpf_iter_link_info's are needed, the target can be extended to register such link infos, and user provided link_info needs to match one of target supported ones. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184112.590360-1-yhs@fb.com
2020-07-25selftests/bpf: Test BPF socket lookup and reuseport with connectionsJakub Sitnicki
Cover the case when BPF socket lookup returns a socket that belongs to a reuseport group, and the reuseport group contains connected UDP sockets. Ensure that the presence of connected UDP sockets in reuseport group does not affect the socket lookup result. Socket selected by reuseport should always be used as result in such case. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Link: https://lore.kernel.org/bpf/20200722161720.940831-3-jakub@cloudflare.com
2020-07-25tools/bpftool: Strip BPF .o files before skeleton generationAndrii Nakryiko
Strip away DWARF info from .bpf.o files, before generating BPF skeletons. This reduces bpftool binary size from 3.43MB to 2.58MB. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20200722043804.2373298-1-andriin@fb.com
2020-07-25tools/testing/nvdimm: Emulate firmware activation commandsDan Williams
Augment the existing firmware update emulation to track activations and validate proper update vs activate sequencing. The DIMM firmware activate capability has a concept of a maximum amount of time platform firmware will quiesce the system relative to how many DIMMs are being activated in parallel. Simulate that DIMM activation happens serially, 1 second per-DIMM, and limit the max at 3 seconds. The nfit_test0 bus emulates 5 DIMMs so it will take 2 activations to update all DIMMs. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-07-25tools/testing/nvdimm: Prepare nfit_ctl_test() for ND_CMD_CALL emulationDan Williams
In preparation for adding a mocked implementation of the firmware-activate bus-info command, rework nfit_ctl_test() to operate on a local command payload wrapped in a 'struct nd_cmd_pkg'. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-07-25tools/testing/nvdimm: Add command debug messagesDan Williams
Arrange the for nfit_test_ctl() path to dump command payloads similarly to the acpi_nfit_ctl() path. This is useful for comparing the sequence of command events between an emulated ACPI-NFIT platform and a real one. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-07-25tools/testing/nvdimm: Cleanup dimm index passingDan Williams
The ND_CMD_CALL path only applies to the nfit_test0 emulated DIMMs. Cleanup occurrences of (i - t->dcr_idx) since that offset fixup only applies to cases where nfit_test1 needs a bus-local index. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-07-25ACPI: NFIT: Move bus_dsm_mask out of generic nvdimm_bus_descriptorDan Williams
DSMs are strictly an ACPI mechanism, evict the bus_dsm_mask concept from the generic 'struct nvdimm_bus_descriptor' object. As a side effect the test facility ->bus_nfit_cmd_force_en is no longer necessary. The test infrastructure can communicate that information directly in ->bus_dsm_mask. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-07-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
The UDP reuseport conflict was a little bit tricky. The net-next code, via bpf-next, extracted the reuseport handling into a helper so that the BPF sk lookup code could invoke it. At the same time, the logic for reuseport handling of unconnected sockets changed via commit efc6b6f6c3113e8b203b9debfb72d81e0f3dcace which changed the logic to carry on the reuseport result into the rest of the lookup loop if we do not return immediately. This requires moving the reuseport_has_conns() logic into the callers. While we are here, get rid of inline directives as they do not belong in foo.c files. The other changes were cases of more straightforward overlapping modifications. Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-25Merge tag 'v5.8-rc6' into locking/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-07-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net into masterLinus Torvalds
Pull networking fixes from David Miller: 1) Fix RCU locaking in iwlwifi, from Johannes Berg. 2) mt76 can access uninitialized NAPI struct, from Felix Fietkau. 3) Fix race in updating pause settings in bnxt_en, from Vasundhara Volam. 4) Propagate error return properly during unbind failures in ax88172a, from George Kennedy. 5) Fix memleak in adf7242_probe, from Liu Jian. 6) smc_drv_probe() can leak, from Wang Hai. 7) Don't muck with the carrier state if register_netdevice() fails in the bonding driver, from Taehee Yoo. 8) Fix memleak in dpaa_eth_probe, from Liu Jian. 9) Need to check skb_put_padto() return value in hsr_fill_tag(), from Murali Karicheri. 10) Don't lose ionic RSS hash settings across FW update, from Shannon Nelson. 11) Fix clobbered SKB control block in act_ct, from Wen Xu. 12) Missing newlink in "tx_timeout" sysfs output, from Xiongfeng Wang. 13) IS_UDPLITE cleanup a long time ago, incorrectly handled transformations involving UDPLITE_RECV_CC. From Miaohe Lin. 14) Unbalanced locking in netdevsim, from Taehee Yoo. 15) Suppress false-positive error messages in qed driver, from Alexander Lobakin. 16) Out of bounds read in ax25_connect and ax25_sendmsg, from Peilin Ye. 17) Missing SKB release in cxgb4's uld_send(), from Navid Emamdoost. 18) Uninitialized value in geneve_changelink(), from Cong Wang. 19) Fix deadlock in xen-netfront, from Andera Righi. 19) flush_backlog() frees skbs with IRQs disabled, so should use dev_kfree_skb_irq() instead of kfree_skb(). From Subash Abhinov Kasiviswanathan. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (111 commits) drivers/net/wan: lapb: Corrected the usage of skb_cow dev: Defer free of skbs in flush_backlog qrtr: orphan socket in qrtr_release() xen-netfront: fix potential deadlock in xennet_remove() flow_offload: Move rhashtable inclusion to the source file geneve: fix an uninitialized value in geneve_changelink() bonding: check return value of register_netdevice() in bond_newlink() tcp: allow at most one TLP probe per flight AX.25: Prevent integer overflows in connect and sendmsg cxgb4: add missing release on skb in uld_send() net: atlantic: fix PTP on AQC10X AX.25: Prevent out-of-bounds read in ax25_sendmsg() sctp: shrink stream outq when fails to do addstream reconf sctp: shrink stream outq only when new outcnt < old outcnt AX.25: Fix out-of-bounds read in ax25_connect() enetc: Remove the mdio bus on PF probe bailout net: ethernet: ti: add NETIF_F_HW_TC hw feature flag for taprio offload net: ethernet: ave: Fix error returns in ave_init drivers/net/wan/x25_asy: Fix to make it work ipvs: fix the connection sync failed in some cases ...
2020-07-25selftest/firmware: Add selftest timeout in settingsKees Cook
The firmware tests would always time out for me. Add a correct timeout, including details on how the value was reached. Additionally allow the test harness to skip comments in settings files and report how long a given timeout was. Reviewed-by: SeongJae Park <sjpark@amazon.de> Acked-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20200724213640.389191-3-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-23vrf: Handle CONFIG_SYSCTL not setDavid Ahern
Randy reported compile failure when CONFIG_SYSCTL is not set/enabled: ERROR: modpost: "sysctl_vals" [drivers/net/vrf.ko] undefined! Fix by splitting out the sysctl init and cleanup into helpers that can be set to do nothing when CONFIG_SYSCTL is disabled. In addition, move vrf_strict_mode and vrf_strict_mode_change to above vrf_shared_table_handler (code move only) and wrap all of it in the ifdef CONFIG_SYSCTL. Update the strict mode tests to check for the existence of the /proc/sys entry. Fixes: 33306f1aaf82 ("vrf: add sysctl parameter for strict mode") Cc: Andrea Mayer <andrea.mayer@uniroma2.it> Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David Ahern <dsahern@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23selftests/powerpc: Add test of memcmp at end of pageMichael Ellerman
Update our memcmp selftest, to test the case where we're comparing up to the end of a page and the subsequent page is not mapped. We have to make sure we don't read off the end of the page and cause a fault. We had a bug there in the past, fixed in commit d9470757398a ("powerpc/64: Fix memcmp reading past the end of src/dest"). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200722055315.962391-1-mpe@ellerman.id.au
2020-07-23KVM: PPC: Fix typo on H_DISABLE_AND_GET hcallLeonardo Bras
On PAPR+ the hcall() on 0x1B0 is called H_DISABLE_AND_GET, but got defined as H_DISABLE_AND_GETC instead. This define was introduced with a typo in commit <b13a96cfb055> ("[PATCH] powerpc: Extends HCALL interface for InfiniBand usage"), and was later used without having the typo noticed. Signed-off-by: Leonardo Bras <leobras.c@gmail.com> Acked-by: Paul Mackerras <paulus@ozlabs.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200707004812.190765-1-leobras.c@gmail.com
2020-07-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-07-21 The following pull-request contains BPF updates for your *net-next* tree. We've added 46 non-merge commits during the last 6 day(s) which contain a total of 68 files changed, 4929 insertions(+), 526 deletions(-). The main changes are: 1) Run BPF program on socket lookup, from Jakub. 2) Introduce cpumap, from Lorenzo. 3) s390 JIT fixes, from Ilya. 4) teach riscv JIT to emit compressed insns, from Luke. 5) use build time computed BTF ids in bpf iter, from Yonghong. ==================== Purely independent overlapping changes in both filter.h and xdp.h Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-22perf stat: Implement control commands handlingAlexey Budankov
Implement handling of 'enable' and 'disable' control commands coming from control file descriptor. If poll event splits initiated timeout interval then the reminder is calculated and still waited in the following evlist__poll() call. Committer testing: The testing instructions came in the cover letter, here I'll extract the parts that are needed to test this specific patch, so that we don't introduce bisection regressions by testing only the patch series as a whole: <FILL IN THE TEST INSTRUCTIONS> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/3cb8a826-145f-81f4-fcb2-fa20045c6957@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: extend -D,--delay option with -1 valueAlexey Budankov
Extend -D,--delay option with -1 value to start monitoring with events disabled to be enabled later by enable command provided via control file descriptor. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/81ac633c-a844-5cfb-931c-820f6e6cbd12@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: Factor out event handling loop into dispatch_events()Alexey Budankov
Consolidate event dispatching loops for fork, attach and system wide monitoring use cases into common dispatch_events() function. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/8a900bd5-200a-9b0f-7154-80a2343bfd1a@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: Factor out body of event handling loop for fork caseAlexey Budankov
Factor out body of event handling loop for fork case reusing handle_interval() function. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/a8ae3f8d-a30e-fd40-998a-f5ca3e98cd45@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: Move target check to loop control statementAlexey Budankov
Check for target existence in loop control statement jointly external asynchronous 'done' signal. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/79037528-578c-af64-f06c-a644b7f5ba6a@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: Factor out body of event handling loop for system wideAlexey Budankov
Introduce handle_interval() function that factors out body of event handling loop for attach and system wide monitoring use cases. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/73130f9e-0d0f-7391-da50-41b4bf4bf54d@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf evlist: Implement control command handling functionsAlexey Budankov
Implement functions of initialization, finalization and processing of control command messages coming from control file descriptors. Allocate control file descriptor as descriptor at struct pollfd object of evsel_list for atomic poll() operation. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/62518ceb-1cc9-2aba-593b-55408d07c1bf@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf evlist: Introduce control file descriptorsAlexey Budankov
Define and initialize control file descriptors. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/0dd4f544-2610-96d6-1bdb-6582bdc3dc2c@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22KVM: PPC: Book3S HV: Save/restore new PMU registersAthira Rajeev
Power ISA v3.1 has added new performance monitoring unit (PMU) special purpose registers (SPRs). They are: Monitor Mode Control Register 3 (MMCR3) Sampled Instruction Event Register A (SIER2) Sampled Instruction Event Register B (SIER3) Add support to save/restore these new SPRs while entering/exiting guest. Also include changes to support KVM_REG_PPC_MMCR3/SIER2/SIER3. Add new SPRs to KVM API documentation. Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1594996707-3727-6-git-send-email-atrajeev@linux.vnet.ibm.com
2020-07-21selftest: txtimestamp: fix net ns entry logicPaolo Pisati
According to 'man 8 ip-netns', if `ip netns identify` returns an empty string, there's no net namespace associated with current PID: fix the net ns entrance logic. Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-21bpftool: Use only nftw for file tree parsingTony Ambardar
The bpftool sources include code to walk file trees, but use multiple frameworks to do so: nftw and fts. While nftw conforms to POSIX/SUSv3 and is widely available, fts is not conformant and less common, especially on non-glibc systems. The inconsistent framework usage hampers maintenance and portability of bpftool, in particular for embedded systems. Standardize code usage by rewriting one fts-based function to use nftw and clean up some related function warnings by extending use of "const char *" arguments. This change helps in building bpftool against musl for OpenWrt. Also fix an unsafe call to dirname() by duplicating the string to pass, since some implementations may directly alter it. The same approach is used in libbpf.c. Signed-off-by: Tony Ambardar <Tony.Ambardar@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20200721024817.13701-1-Tony.Ambardar@gmail.com
2020-07-21bpf: Make btf_sock_ids globalYonghong Song
tcp and udp bpf_iter can reuse some socket ids in btf_sock_ids, so make it global. I put the extern definition in btf_ids.h as a central place so it can be easily discovered by developers. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200720163402.1393427-1-yhs@fb.com
2020-07-21bpf: Add BTF_ID_LIST_GLOBAL in btf_ids.hYonghong Song
Existing BTF_ID_LIST used a local static variable to store btf_ids. This patch provided a new macro BTF_ID_LIST_GLOBAL to store btf_ids in a global variable which can be shared among multiple files. The existing BTF_ID_LIST is still retained. Two reasons. First, BTF_ID_LIST is also used to build btf_ids for helper arguments which typically is an array of 5. Since typically different helpers have different signature, it makes little sense to share them. Second, some current computed btf_ids are indeed local. If later those btf_ids are shared between different files, they can use BTF_ID_LIST_GLOBAL then. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/bpf/20200720163401.1393159-1-yhs@fb.com
2020-07-21tools/bpf: Sync btf_ids.h to toolsYonghong Song
Sync kernel header btf_ids.h to tools directory. Also define macro CONFIG_DEBUG_INFO_BTF before including btf_ids.h in prog_tests/resolve_btfids.c since non-stub definitions for BTF_ID_LIST etc. macros are defined under CONFIG_DEBUG_INFO_BTF. This prevented test_progs from failing. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200720163359.1393079-1-yhs@fb.com
2020-07-21samples/bpf, selftests/bpf: Use bpf_probe_read_kernelIlya Leoshkevich
A handful of samples and selftests fail to build on s390, because after commit 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work") bpf_probe_read is not available anymore. Fix by using bpf_probe_read_kernel. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200720114806.88823-1-iii@linux.ibm.com
2020-07-21selftests/bpf: Fix test_lwt_seg6local.sh hangsIlya Leoshkevich
OpenBSD netcat (Debian patchlevel 1.195-2) does not seem to react to SIGINT for whatever reason, causing prefix.pl to hang after test_lwt_seg6local.sh exits due to netcat inheriting test_lwt_seg6local.sh's file descriptors. Fix by using SIGTERM instead. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200720101810.84299-1-iii@linux.ibm.com
2020-07-21tools/bpftool: Fix error handing in do_skeleton()YueHaibing
Fix pass 0 to PTR_ERR, also dump more err info using libbpf_strerror. Fixes: 5dc7a8b21144 ("bpftool, selftests/bpf: Embed object file inside skeleton") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20200717123059.29624-1-yuehaibing@huawei.com
2020-07-21libbpf bpf_helpers: Use __builtin_offsetof for offsetofIan Rogers
The non-builtin route for offsetof has a dependency on size_t from stdlib.h/stdint.h that is undeclared and may break targets. The offsetof macro in bpf_helpers may disable the same macro in other headers that have a #ifdef offsetof guard. Rather than add additional dependencies improve the offsetof macro declared here to use the builtin that is available since llvm 3.7 (the first with a BPF backend). Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200720061741.1514673-1-irogers@google.com
2020-07-21selftests: bpf: test_kmod.sh: Fix running out of srctreeIlya Leoshkevich
When running out of srctree, relative path to lib/test_bpf.ko is different than when running in srctree. Check $building_out_of_srctree environment variable and use a different relative path if needed. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200717165326.6786-2-iii@linux.ibm.com
2020-07-22powerpc/64s: Remove PROT_SAO supportNicholas Piggin
ISA v3.1 does not support the SAO storage control attribute required to implement PROT_SAO. PROT_SAO was used by specialised system software (Lx86) that has been discontinued for about 7 years, and is not thought to be used elsewhere, so removal should not cause problems. We rather remove it than keep support for older processors, because live migrating guest partitions to newer processors may not be possible if SAO is in use (or worse allowed with silent races). - PROT_SAO stays in the uapi header so code using it would still build. - arch_validate_prot() is removed, the generic version rejects PROT_SAO so applications would get a failure at mmap() time. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Drop KVM change for the time being] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200703011958.1166620-3-npiggin@gmail.com
2020-07-22selftests/powerpc: Run per_event_excludes test on Power8 or laterMichael Ellerman
The per_event_excludes test wants to run on Power8 or later. But currently it checks that AT_BASE_PLATFORM *equals* power8, which means it only runs on Power8. Fix it to check for the ISA 2.07 feature, which will be set on Power8 and later CPUs. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200716122142.3776261-1-mpe@ellerman.id.au
2020-07-22selftests/powerpc: ptrace-pkey: Don't update expected UAMOR valueAneesh Kumar K.V
With commit 4a4a5e5d2aad ("powerpc/pkeys: key allocation/deallocation must not change pkey registers") we are not updating UAMOR on key allocation. So don't update the expected uamor value in the test. Fixes: 4a4a5e5d2aad ("powerpc/pkeys: key allocation/deallocation must not change pkey registers") Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200709032946.881753-23-aneesh.kumar@linux.ibm.com
2020-07-22selftests/powerpc: ptrace-pkey: Update the test to mark an invalid pkey ↵Aneesh Kumar K.V
correctly Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200709032946.881753-22-aneesh.kumar@linux.ibm.com
2020-07-22selftests/powerpc: ptrace-pkey: Rename variables to make it easier to follow ↵Aneesh Kumar K.V
code Rename variable to indicate that they are invalid values which we will use to test ptrace update of pkeys. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200709032946.881753-21-aneesh.kumar@linux.ibm.com
2020-07-21libperf: Avoid counting of nonfilterable fdarray fdsAlexey Budankov
Avoid counting of struct pollfd *entries objects with fdarray_flag__nonfilterable flag by fdarray__filter(). Nonfilterable objects are still processed if requested revents have been signaled for them. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/b5ab0d2c-b742-0032-e8d3-c8e2eb423c42@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-21libperf: Add flags to fdarray fds objectsAlexey Budankov
Store flags per struct pollfd *entries object in a bitmap of int size. Implement fdarray_flag__nonfilterable flag to skip object from counting by fdarray__filter(). Fixed fdarray test issue reported by kernel test robot. Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/6b7d43ff-0801-d5dd-4e90-fcd86b17c1c8@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-21s390/cpum_cf,perf: change DFLT_CCERROR counter nameThomas Richter
Change the counter name DLFT_CCERROR to DLFT_CCFINISH on IBM z15. This counter counts completed DEFLATE instructions with exit code 0, 1 or 2. Since exit code 0 means success and exit code 1 or 2 indicate errors, change the counter name to avoid confusion. This counter is incremented each time the DEFLATE instruction completed regardless if an error was detected or not. Fixes: d68d5d51dc89 ("s390/cpum_cf: Add new extended counters for IBM z15") Fixes: e7950166e402 ("perf vendor events s390: Add new deflate counters for IBM z15") Cc: stable@vger.kernel.org # v5.7 Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2020-07-21libperf: Avoid internal moving of fdarray fdsAlexey Budankov
Avoid moving of fds by fdarray__filter() so fds indices returned by fdarray__add() can be used for access and processing of objects at struct pollfd *entries. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/676844f8-55d3-c628-23db-aa163a81519e@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-21tools/memory-model: Remove smp_read_barrier_depends() from informal docWill Deacon
smp_read_barrier_depends() has gone the way of mmiowb() and so many esoteric memory barriers before it. Drop the two mentions of this deceased barrier from the LKMM informal explanation document. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
2020-07-21tools: bpf: Use local copy of headers including uapi/linux/filter.hWill Deacon
Pulling header files directly out of the kernel sources for inclusion in userspace programs is highly error prone, not least because it bypasses the kbuild infrastructure entirely and so may end up referencing other header files that have not been generated. Subsequent patches will cause compiler.h to pull in the ungenerated asm/rwonce.h file via filter.h, breaking the build for tools/bpf: | $ make -C tools/bpf | make: Entering directory '/linux/tools/bpf' | CC bpf_jit_disasm.o | LINK bpf_jit_disasm | CC bpf_dbg.o | In file included from /linux/include/uapi/linux/filter.h:9, | from /linux/tools/bpf/bpf_dbg.c:41: | /linux/include/linux/compiler.h:247:10: fatal error: asm/rwonce.h: No such file or directory | #include <asm/rwonce.h> | ^~~~~~~~~~~~~~ | compilation terminated. | make: *** [Makefile:61: bpf_dbg.o] Error 1 | make: Leaving directory '/linux/tools/bpf' Take a copy of the installed version of linux/filter.h (i.e. the one created by the 'headers_install' target) into tools/include/uapi/linux/ and adjust the BPF tool Makefile to reference the local include directories instead of those in the main source tree. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Suggested-by: Daniel Borkmann <daniel@iogearbox.net> Reported-by: Xiao Yang <ice_yangxiao@163.com> Signed-off-by: Will Deacon <will@kernel.org>
2020-07-20tc-testing: Add tdc to kselftestsBriana Oursler
Add tdc to existing kselftest infrastructure so that it can be run with existing kselftests. TDC now generates objects in objdir/kselftest without cluttering main objdir, leaves source directory clean, and installs correctly in kselftest_install, properly adding itself to run_kselftest.sh script. Add tc-testing as a target of selftests/Makefile. Create tdc.sh to run tdc.py targets with correct arguments. To support single target from selftest/Makefile, combine tc-testing/bpf/Makefile and tc-testing/Makefile. Move action.c up a directory to tc-testing/. Tested with: make O=/tmp/{objdir} TARGETS="tc-testing" kselftest cd /tmp/{objdir} cd kselftest cd tc-testing ./tdc.sh make -C tools/testing/selftests/ TARGETS=tc-testing run_tests make TARGETS="tc-testing" kselftest cd tools/testing/selftests ./kselftest_install.sh /tmp/exampledir My VM doesn't run all the kselftests so I commented out all except my target and net/pmtu.sh then: cd /tmp/exampledir && ./run_kselftest.sh Co-developed-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: Briana Oursler <briana.oursler@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-05 09:29:23 +0000