03 Jul, 2017
1 commit
-
This work adds a helper that can be used to adjust net room of an
skb. The helper is generic and can be further extended in future.
Main use case is for having a programmatic way to add/remove room to
v4/v6 header options along with cls_bpf on egress and ingress hook
of the data path. It reuses most of the infrastructure that we added
for the bpf_skb_change_type() helper which can be used in nat64
translations. Similarly, the helper only takes care of adjusting the
room so that related data is populated and csum adapted out of the
BPF program using it.Signed-off-by: Daniel Borkmann
Acked-by: John Fastabend
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
02 Jul, 2017
1 commit
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Update tools/include/uapi/linux/bpf.h to include changes related to new
bpf sock_ops program type.Signed-off-by: Lawrence Brakmo
Signed-off-by: David S. Miller
11 Jun, 2017
1 commit
-
Allow for tc BPF programs to set a skb->hash, apart from clearing
and triggering a recalc that we have right now. It allows for BPF
to implement a custom hashing routine for skb_get_hash().Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
07 Jun, 2017
2 commits
-
Just some simple overlapping changes in marvell PHY driver
and the DSA core code.Signed-off-by: David S. Miller
-
Add test to exercise the bpf_prog/map id generation,
bpf_(prog|map)_get_next_id(), bpf_(prog|map)_get_fd_by_id() and
bpf_get_obj_info_by_fd().Signed-off-by: Martin KaFai Lau
Acked-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Signed-off-by: David S. Miller
05 Jun, 2017
1 commit
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This commit updates documentation of the bpf_perf_event_output and
bpf_perf_event_read helpers to match their implementation.Signed-off-by: Teng Qin
Signed-off-by: Alexei Starovoitov
Signed-off-by: David S. Miller
24 May, 2017
1 commit
-
Sync (copy) the following v4.12 kernel headers to the tooling headers:
arch/x86/include/asm/disabled-features.h:
arch/x86/include/uapi/asm/kvm.h:
arch/powerpc/include/uapi/asm/kvm.h:
arch/s390/include/uapi/asm/kvm.h:
arch/arm/include/uapi/asm/kvm.h:
arch/arm64/include/uapi/asm/kvm.h:- 'struct kvm_sync_regs' got changed in an ABI-incompatible way,
fortunately none of the (in-kernel) tooling relied on it- new KVM_DEV calls added
arch/x86/include/asm/required-features.h:
- 5-level paging hardware ABI detail added
arch/x86/include/asm/cpufeatures.h:
- new CPU feature added
arch/x86/include/uapi/asm/vmx.h:
- new VMX exit conditions
None of the changes requires fixes in the tooling source code.
This addresses the following warnings:
Warning: include/uapi/linux/stat.h differs from kernel
Warning: arch/x86/include/asm/disabled-features.h differs from kernel
Warning: arch/x86/include/asm/required-features.h differs from kernel
Warning: arch/x86/include/asm/cpufeatures.h differs from kernel
Warning: arch/x86/include/uapi/asm/kvm.h differs from kernel
Warning: arch/x86/include/uapi/asm/vmx.h differs from kernel
Warning: arch/powerpc/include/uapi/asm/kvm.h differs from kernel
Warning: arch/s390/include/uapi/asm/kvm.h differs from kernel
Warning: arch/arm/include/uapi/asm/kvm.h differs from kernel
Warning: arch/arm64/include/uapi/asm/kvm.h differs from kernelCc: Arnaldo Carvalho de Melo
Cc: Arnaldo Carvalho de Melo
Cc: Jiri Olsa
Cc: Jiri Olsa
Cc: Linus Torvalds
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Yao Jin
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170524065721.j2mlch6bgk5klgbc@gmail.com
Signed-off-by: Ingo Molnar
12 May, 2017
1 commit
-
Add a new field, "prog_flags", and an initial flag value
BPF_F_STRICT_ALIGNMENT.When set, the verifier will enforce strict pointer alignment
regardless of the setting of CONFIG_EFFICIENT_UNALIGNED_ACCESS.The verifier, in this mode, will also use a fixed value of "2" in
place of NET_IP_ALIGN.This facilitates test cases that will exercise and validate this part
of the verifier even when run on architectures where alignment doesn't
matter.Signed-off-by: David S. Miller
Acked-by: Daniel Borkmann
06 May, 2017
1 commit
-
Pull powerpc updates from Michael Ellerman:
"Highlights include:- Larger virtual address space on 64-bit server CPUs. By default we
use a 128TB virtual address space, but a process can request access
to the full 512TB by passing a hint to mmap().- Support for the new Power9 "XIVE" interrupt controller.
- TLB flushing optimisations for the radix MMU on Power9.
- Support for CAPI cards on Power9, using the "Coherent Accelerator
Interface Architecture 2.0".- The ability to configure the mmap randomisation limits at build and
runtime.- Several small fixes and cleanups to the kprobes code, as well as
support for KPROBES_ON_FTRACE.- Major improvements to handling of system reset interrupts,
correctly treating them as NMIs, giving them a dedicated stack and
using a new hypervisor call to trigger them, all of which should
aid debugging and robustness.- Many fixes and other minor enhancements.
Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Alistair Popple,
Andrew Donnellan, Aneesh Kumar K.V, Anshuman Khandual, Anton
Blanchard, Balbir Singh, Ben Hutchings, Benjamin Herrenschmidt,
Bhupesh Sharma, Chris Packham, Christian Zigotzky, Christophe Leroy,
Christophe Lombard, Daniel Axtens, David Gibson, Gautham R. Shenoy,
Gavin Shan, Geert Uytterhoeven, Guilherme G. Piccoli, Hamish Martin,
Hari Bathini, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Mahesh J
Salgaonkar, Mahesh Salgaonkar, Masami Hiramatsu, Matt Brown, Matthew
R. Ochs, Michael Neuling, Naveen N. Rao, Nicholas Piggin, Oliver
O'Halloran, Pan Xinhui, Paul Mackerras, Rashmica Gupta, Russell
Currey, Sukadev Bhattiprolu, Thadeu Lima de Souza Cascardo, Tobin C.
Harding, Tyrel Datwyler, Uma Krishnan, Vaibhav Jain, Vipin K Parashar,
Yang Shi"* tag 'powerpc-4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits)
powerpc/64s: Power9 has no LPCR[VRMASD] field so don't set it
powerpc/powernv: Fix TCE kill on NVLink2
powerpc/mm/radix: Drop support for CPUs without lockless tlbie
powerpc/book3s/mce: Move add_taint() later in virtual mode
powerpc/sysfs: Move #ifdef CONFIG_HOTPLUG_CPU out of the function body
powerpc/smp: Document irq enable/disable after migrating IRQs
powerpc/mpc52xx: Don't select user-visible RTAS_PROC
powerpc/powernv: Document cxl dependency on special case in pnv_eeh_reset()
powerpc/eeh: Clean up and document event handling functions
powerpc/eeh: Avoid use after free in eeh_handle_special_event()
cxl: Mask slice error interrupts after first occurrence
cxl: Route eeh events to all drivers in cxl_pci_error_detected()
cxl: Force context lock during EEH flow
powerpc/64: Allow CONFIG_RELOCATABLE if COMPILE_TEST
powerpc/xmon: Teach xmon oops about radix vectors
powerpc/mm/hash: Fix off-by-one in comment about kernel contexts ids
powerpc/pseries: Enable VFIO
powerpc/powernv: Fix iommu table size calculation hook for small tables
powerpc/powernv: Check kzalloc() return value in pnv_pci_table_alloc
powerpc: Add arch/powerpc/tools directory
...
03 May, 2017
1 commit
-
Pull networking updates from David Millar:
"Here are some highlights from the 2065 networking commits that
happened this development cycle:1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)
2) Add a generic XDP driver, so that anyone can test XDP even if they
lack a networking device whose driver has explicit XDP support
(me).3) Sparc64 now has an eBPF JIT too (me)
4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
Starovoitov)5) Make netfitler network namespace teardown less expensive (Florian
Westphal)6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)
7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)
8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)
9) Multiqueue support in stmmac driver (Joao Pinto)
10) Remove TCP timewait recycling, it never really could possibly work
well in the real world and timestamp randomization really zaps any
hint of usability this feature had (Soheil Hassas Yeganeh)11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
Aleksandrov)12) Add socket busy poll support to epoll (Sridhar Samudrala)
13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
and several others)14) IPSEC hw offload infrastructure (Steffen Klassert)"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
tipc: refactor function tipc_sk_recv_stream()
tipc: refactor function tipc_sk_recvmsg()
net: thunderx: Optimize page recycling for XDP
net: thunderx: Support for XDP header adjustment
net: thunderx: Add support for XDP_TX
net: thunderx: Add support for XDP_DROP
net: thunderx: Add basic XDP support
net: thunderx: Cleanup receive buffer allocation
net: thunderx: Optimize CQE_TX handling
net: thunderx: Optimize RBDR descriptor handling
net: thunderx: Support for page recycling
ipx: call ipxitf_put() in ioctl error path
net: sched: add helpers to handle extended actions
qed*: Fix issues in the ptp filter config implementation.
qede: Fix concurrency issue in PTP Tx path processing.
stmmac: Add support for SIMATIC IOT2000 platform
net: hns: fix ethtool_get_strings overflow in hns driver
tcp: fix wraparound issue in tcp_lp
bpf, arm64: fix jit branch offset related to ldimm64
bpf, arm64: implement jiting of BPF_XADD
...
25 Apr, 2017
1 commit
-
To get the changes in the commit Fixes: 3209f68b3ca4 ("statx: Include a
mask for stx_attributes in struct statx")Silencing this perf build warning:
Warning: tools/include/uapi/linux/stat.h differs from kernel
No need to change the statx syscall beautifiers in 'perf trace' at this
time.Cc: Adrian Hunter
Cc: Al Viro
Cc: David Ahern
Cc: David Howells
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-y8bgiyzuvura62lffvh1zbg9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
22 Apr, 2017
1 commit
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Add napi_id access to __sk_buff for socket filter program types, tc
program types and other bpf_convert_ctx_access() users. Having access
to skb->napi_id is useful for per RX queue listener siloing, f.e.
in combination with SO_ATTACH_REUSEPORT_EBPF and when busy polling is
used, meaning SO_REUSEPORT enabled listeners can then select the
corresponding socket at SYN time already [1]. The skb is marked via
skb_mark_napi_id() early in the receive path (e.g., napi_gro_receive()).Currently, sockets can only use SO_INCOMING_NAPI_ID from 6d4339028b35
("net: Introduce SO_INCOMING_NAPI_ID") as a socket option to look up
the NAPI ID associated with the queue for steering, which requires a
prior sk_mark_napi_id() after the socket was looked up.Semantics for the __sk_buff napi_id access are similar, meaning if
skb->napi_id is < MIN_NAPI_ID (e.g. outgoing packets using sender_cpu),
then an invalid napi_id of 0 is returned to the program, otherwise a
valid non-zero napi_id.[1] http://netdevconf.org/2.1/slides/apr6/dumazet-BUSY-POLLING-Netdev-2.1.pdf
Suggested-by: Eric Dumazet
Signed-off-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
19 Apr, 2017
1 commit
-
perf_mem_data_src is a union that is initialized in the kernel via the ->val
field and accessed by userspace via the mem_xxx bitfields. For this to work
correctly on big endian platforms, we need a big-endian definition for the
bitfields.Currently on a big endian system, if a user requests PERF_SAMPLE_DATA_SRC (perf
report -d), they will get the default value from perf_sample_data_init(), which
is PERF_MEM_NA. The value for PERF_MEM_NA is constructed using shifts:/* TLB access */
#define PERF_MEM_TLB_NA 0x01 /* not available */
...
#define PERF_MEM_TLB_SHIFT 26#define PERF_MEM_S(a, s) \
(((__u64)PERF_MEM_##a##_##s) << PERF_MEM_##a##_SHIFT)#define PERF_MEM_NA (PERF_MEM_S(OP, NA) |\
PERF_MEM_S(LVL, NA) |\
PERF_MEM_S(SNOOP, NA) |\
PERF_MEM_S(LOCK, NA) |\
PERF_MEM_S(TLB, NA))Which works out as:
((0x01 << 0) | (0x01 << 5) | (0x01 << 19) | (0x01 << 24) | (0x01 << 26))
Which means the PERF_MEM_NA value comes out of the kernel as 0x5080021
in CPU endian.But then in the perf tool, the code uses the bitfields to inspect the value, and
currently the bitfields are defined using little endian ordering.So eg. in perf_mem__tlb_scnprintf() we see:
data_src->val = 0x5080021
op = 0x0
lvl = 0x0
snoop = 0x0
lock = 0x0
dtlb = 0x0
rsvd = 0x5080021Because of the way the perf tool code is written this is still displayed to the
user as "N/A", so there is no bug visible at the UI level.Currently there are no big endian architectures which export a meaningful
value (ie. other than PERF_MEM_NA), so the extent of the bug on big endian
platforms is that the PERF_MEM_NA value is exported incorrectly as described
above. Subsequent patches will add support on big endian powerpc for populating
the data source value.This patch does a minimal fix of adding big endian definition of the bitfields
to match the values that are already exported by the kernel on big endian. And
it makes no change on little endian.Signed-off-by: Sukadev Bhattiprolu
Signed-off-by: Madhavan Srinivasan
Acked-by: Peter Zijlstra (Intel)
Signed-off-by: Michael Ellerman
10 Apr, 2017
1 commit
-
o s/bpf_bpf_get_socket_cookie/bpf_get_socket_cookie
Signed-off-by: Alexander Alemayhu
Acked-by: Daniel Borkmann
Signed-off-by: David S. Miller
02 Apr, 2017
1 commit
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add support for BPF_PROG_TEST_RUN command to libbpf.a
Signed-off-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Acked-by: Martin KaFai Lau
Acked-by: Wang Nan
Signed-off-by: David S. Miller
31 Mar, 2017
1 commit
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We will need it to build tools/perf/trace/beauty/statx.h.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-nin41ve2fa63lrfbdr6x57yr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
24 Mar, 2017
2 commits
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Returns the owner uid of the socket inside a sk_buff. This is useful to
perform per-UID accounting of network traffic or per-UID packet
filtering. The socket need to be a fullsock otherwise overflowuid is
returned.Signed-off-by: Chenbo Feng
Signed-off-by: David S. Miller -
Retrieve the socket cookie generated by sock_gen_cookie() from a sk_buff
with a known socket. Generates a new cookie if one was not yet set.If
the socket pointer inside sk_buff is NULL, 0 is returned. The helper
function coud be useful in monitoring per socket networking traffic
statistics and provide a unique socket identifier per namespace.Acked-by: Daniel Borkmann
Acked-by: Alexei Starovoitov
Acked-by: Willem de Bruijn
Signed-off-by: Chenbo Feng
Signed-off-by: David S. Miller
23 Mar, 2017
1 commit
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Test cases for array of maps and hash of maps.
Signed-off-by: Martin KaFai Lau
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
17 Mar, 2017
1 commit
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To get PERF_AUX_FLAG_PARTIAL, introduced in:
ae0c2d995d64 ("perf/core: Add a flag for partial AUX records")
and that will be used to warn the user about gaps in AUX records due
to VMX being used in KVM guests.Silences the kernel/tools file copy detector:
Warning: include/uapi/linux/perf_event.h differs from kernel
Signed-off-by: Alexander Shishkin
Cc: Adrian Hunter
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Vince Weaver
Link: http://lkml.kernel.org/r/8760j941ig.fsf@ashishki-desk.ger.corp.intel.com
[ Split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo
16 Mar, 2017
1 commit
-
Signed-off-by: Ingo Molnar
14 Mar, 2017
1 commit
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Introduce a new option to record PERF_RECORD_NAMESPACES events emitted
by the kernel when fork, clone, setns or unshare are invoked. And update
perf-record documentation with the new option to record namespace
events.Committer notes:
Combined it with a later patch to allow printing it via 'perf report -D'
and be able to test the feature introduced in this patch. Had to move
here also perf_ns__name(), that was introduced in another later patch.Also used PRIu64 and PRIx64 to fix the build in some enfironments wrt:
util/event.c:1129:39: error: format '%lx' expects argument of type 'long unsigned int', but argument 6 has type 'long long unsigned int' [-Werror=format=]
ret += fprintf(fp, "%u/%s: %lu/0x%lx%s", idx
^
Testing it:# perf record --namespaces -a
^C[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.083 MB perf.data (423 samples) ]
#
# perf report -D
3 2028902078892 0x115140 [0xa0]: PERF_RECORD_NAMESPACES 14783/14783 - nr_namespaces: 7
[0/net: 3/0xf0000081, 1/uts: 3/0xeffffffe, 2/ipc: 3/0xefffffff, 3/pid: 3/0xeffffffc,
4/user: 3/0xeffffffd, 5/mnt: 3/0xf0000000, 6/cgroup: 3/0xeffffffb]0x1151e0 [0x30]: event: 9
.
. ... raw event: size 48 bytes
. 0000: 09 00 00 00 02 00 30 00 c4 71 82 68 0c 7f 00 00 ......0..q.h....
. 0010: a9 39 00 00 a9 39 00 00 94 28 fe 63 d8 01 00 00 .9...9...(.c....
. 0020: 03 00 00 00 00 00 00 00 ce c4 02 00 00 00 00 00 ................
NAMESPACES events: 1
#Signed-off-by: Hari Bathini
Acked-by: Jiri Olsa
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Alexei Starovoitov
Cc: Ananth N Mavinakayanahalli
Cc: Aravinda Prasad
Cc: Brendan Gregg
Cc: Daniel Borkmann
Cc: Eric Biederman
Cc: Peter Zijlstra
Cc: Sargun Dhillon
Cc: Steven Rostedt
Link: http://lkml.kernel.org/r/148891930386.25309.18412039920746995488.stgit@hbathini.in.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo
13 Mar, 2017
1 commit
-
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 7Signed-off-by: Alexei Starovoitov
Acked-by: Daniel Borkmann
Tested-by: Daniel Borkmann
Signed-off-by: David S. Miller
17 Feb, 2017
1 commit
15 Feb, 2017
1 commit
-
Signed-off-by: Stephen Rothwell
Acked-by: Alexei Starovoitov
Signed-off-by: David S. Miller
11 Feb, 2017
1 commit
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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
Cc: Alexei Starovoitov
Cc: Arnaldo Carvalho de Melo
Cc: Daniel Borkmann
Cc: Daniel Mack
Cc: David S. Miller
Cc: Gianluca Borello
Signed-off-by: David S. Miller
24 Dec, 2016
1 commit
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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
...
16 Dec, 2016
1 commit
-
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
Acked-by: Wang Nan
Cc: Alexei Starovoitov
Cc: Daniel Borkmann
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
14 Dec, 2016
1 commit
-
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
...
19 Nov, 2016
1 commit
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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
Signed-off-by: Will Deacon
28 Oct, 2016
1 commit
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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
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-yev9rexu02cl7cjeozzmrl9t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
06 Oct, 2016
1 commit
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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
Cc: Daniel Borkmann
Cc: David Ahern
Cc: David S. Miller
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-x67d2gq8ct6ko12ex14q8bbx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
14 Sep, 2016
1 commit
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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.hThe 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
doneif [ -f $src ]
then
grep '#include > $target
echo "$target"
doneexit 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_WRITESigned-off-by: Wang Nan
Cc: Zefan Li
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
09 Aug, 2016
1 commit
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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
$Cc: Adrian Hunter
Cc: Alexei Starovoitov
Cc: Brenden Blanco
Cc: Daniel Borkmann
Cc: David Ahern
Cc: David S. Miller
Cc: Jiri Olsa
Cc: Martin KaFai Lau
Cc: Namhyung Kim
Cc: Sargun Dhillon
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-difq4ts1xvww6eyfs9e7zlft@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
13 Jul, 2016
4 commits
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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
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-lwqvgbuitjmrdpjmjp6zqnyx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
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
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-3jz31pz4nw526uko5da9e7o3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
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 kernelCc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-5plvi2gq4x469dcyybiu226q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
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
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-v6aks5un3s5pehory6f42nrl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo