20 Feb, 2019
1 commit
-
[ Upstream commit d0df00e30e4bf9bc27ddbd092ad683ff6121b360 ]
The BPF library is not built on 64-bit RISC-V, as the BPF feature is
not detected. Looking more in details, feature/test-bpf.c fails to build
with the following error:| In file included from /tmp/linux-4.19.12/tools/include/uapi/asm/bitsperlong.h:17,
| from /tmp/linux-4.19.12/tools/include/uapi/asm-generic/unistd.h:2,
| from /usr/include/riscv64-linux-gnu/asm/unistd.h:1,
| from test-bpf.c:2:
| /tmp/linux-4.19.12/tools/include/asm-generic/bitsperlong.h:14:2: error: #error Inconsistent word size. Check asm/bitsperlong.h
| #error Inconsistent word size. Check asm/bitsperlong.h
| ^~~~~The UAPI from the tools directory is missing RISC-V support, therefore
bitsperlong.h from asm-generic is used, defaulting to 32 bits.Fix that by adding tools/arch/riscv/include/uapi/asm/bitsperlong.h as
a copy of arch/riscv/include/uapi/asm/bitsperlong.h and by updating
tools/include/uapi/asm/bitsperlong.h.Signed-off-by: Aurelien Jarno
Signed-off-by: Palmer Dabbelt
Signed-off-by: Sasha Levin
08 Oct, 2018
1 commit
-
To get the changes in:
d1766202779e ("x86/kvm/lapic: always disable MMIO interface in x2APIC mode")
That at this time will not generate changes in tools such as 'perf trace',
that still needs more work in tools/perf/examples/bpf/augmented_syscalls.c
to need such id -> string tables.This silences the following perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h'
diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.hCc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paolo Bonzini
Cc: Vitaly Kuznetsov
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-yadntj2ok6zpzjwi656onuh0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
12 Sep, 2018
1 commit
-
To get the changes in:
a449938297e5 ("KVM: s390: Add huge page enablement control")
8fcc4b5923af ("kvm: nVMX: Introduce KVM_CAP_NESTED_STATE")
be26b3a73413 ("arm64: KVM: export the capability to set guest SError syndrome")
b7b27facc7b5 ("arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS")
b0960b9569db ("KVM: arm: Add 32bit get/set events support")
a3da7b4a3be5 ("KVM: s390: add etoken support for guests")This makes 'perf trace' automagically get aware of these new ioctls:
$ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h
$ tools/perf/trace/beauty/kvm_ioctl.sh > /tmp/after
$ diff -u /tmp/before /tmp/after
--- /tmp/before 2018-09-11 11:18:29.173207586 -0300
+++ /tmp/after 2018-09-11 11:18:38.488200446 -0300
@@ -84,6 +84,8 @@
[0xbb] = "MEMORY_ENCRYPT_REG_REGION",
[0xbc] = "MEMORY_ENCRYPT_UNREG_REGION",
[0xbd] = "HYPERV_EVENTFD",
+ [0xbe] = "GET_NESTED_STATE",
+ [0xbf] = "SET_NESTED_STATE",
[0xe0] = "CREATE_DEVICE",
[0xe1] = "SET_DEVICE_ATTR",
[0xe2] = "GAnd cures the following warning during perf's build:
Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.hCc: Adrian Hunter
Cc: Christian Borntraeger
Cc: Cornelia Huck
Cc: David Ahern
Cc: David Hildenbrand
Cc: Dongjiu Geng
Cc: Eduardo Habkost
Cc: James Morse
Cc: Janosch Frank
Cc: Jim Mattson
Cc: Jiri Olsa
Cc: Marc Zyngier
Cc: Namhyung Kim
Cc: Paolo Bonzini
Cc: Peter Zijlstra
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-2vvwh2o19orn56di0ksrtgzr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de MeloSigned-off-by: Arnaldo Carvalho de Melo
27 Aug, 2018
1 commit
-
Pull perf updates from Thomas Gleixner:
"Kernel:
- Improve kallsyms coverage
- Add x86 entry trampolines to kcore
- Fix ARM SPE handling
- Correct PPC event post processingTools:
- Make the build system more robust
- Small fixes and enhancements all over the place
- Update kernel ABI header copies
- Preparatory work for converting libtraceevnt to a shared library
- License cleanups"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits)
tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'
tools arch x86: Update tools's copy of cpufeatures.h
perf python: Fix pyrf_evlist__read_on_cpu() interface
perf mmap: Store real cpu number in 'struct perf_mmap'
perf tools: Remove ext from struct kmod_path
perf tools: Add gzip_is_compressed function
perf tools: Add lzma_is_compressed function
perf tools: Add is_compressed callback to compressions array
perf tools: Move the temp file processing into decompress_kmodule
perf tools: Use compression id in decompress_kmodule()
perf tools: Store compression id into struct dso
perf tools: Add compression id into 'struct kmod_path'
perf tools: Make is_supported_compression() static
perf tools: Make decompress_to_file() function static
perf tools: Get rid of dso__needs_decompress() call in __open_dso()
perf tools: Get rid of dso__needs_decompress() call in symbol__disassemble()
perf tools: Get rid of dso__needs_decompress() call in read_object_code()
tools lib traceevent: Change to SPDX License format
perf llvm: Allow passing options to llc in addition to clang
perf parser: Improve error message for PMU address filters
...
20 Aug, 2018
2 commits
-
To bring in the change made in this cset:
Fixes: a7bea8308933 ("x86/asm/64: Use 32-bit XOR to zero registers")
CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
LD /tmp/build/perf/bench/perf-in.o
LD /tmp/build/perf/perf-in.o
LINK /tmp/build/perf/perfSilencing this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.SCc: Adrian Hunter
Cc: David Ahern
Cc: Jan Beulich
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-sad22dudoz71qr3tsnlqtkia@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
To get the changes in the following csets:
301d328a6f8b ("x86/cpufeatures: Add EPT_AD feature bit")
706d51681d63 ("x86/speculation: Support Enhanced IBRS on future CPUs")No tools were affected, copy it to silence this perf tool build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.hCc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Feiner
Cc: Sai Praneeth
Cc: Thomas Gleixner
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-bvs8wgd5wp4lz9f0xf1iug5r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
15 Aug, 2018
1 commit
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Merge L1 Terminal Fault fixes from Thomas Gleixner:
"L1TF, aka L1 Terminal Fault, is yet another speculative hardware
engineering trainwreck. It's a hardware vulnerability which allows
unprivileged speculative access to data which is available in the
Level 1 Data Cache when the page table entry controlling the virtual
address, which is used for the access, has the Present bit cleared or
other reserved bits set.If an instruction accesses a virtual address for which the relevant
page table entry (PTE) has the Present bit cleared or other reserved
bits set, then speculative execution ignores the invalid PTE and loads
the referenced data if it is present in the Level 1 Data Cache, as if
the page referenced by the address bits in the PTE was still present
and accessible.While this is a purely speculative mechanism and the instruction will
raise a page fault when it is retired eventually, the pure act of
loading the data and making it available to other speculative
instructions opens up the opportunity for side channel attacks to
unprivileged malicious code, similar to the Meltdown attack.While Meltdown breaks the user space to kernel space protection, L1TF
allows to attack any physical memory address in the system and the
attack works across all protection domains. It allows an attack of SGX
and also works from inside virtual machines because the speculation
bypasses the extended page table (EPT) protection mechanism.The assoicated CVEs are: CVE-2018-3615, CVE-2018-3620, CVE-2018-3646
The mitigations provided by this pull request include:
- Host side protection by inverting the upper address bits of a non
present page table entry so the entry points to uncacheable memory.- Hypervisor protection by flushing L1 Data Cache on VMENTER.
- SMT (HyperThreading) control knobs, which allow to 'turn off' SMT
by offlining the sibling CPU threads. The knobs are available on
the kernel command line and at runtime via sysfs- Control knobs for the hypervisor mitigation, related to L1D flush
and SMT control. The knobs are available on the kernel command line
and at runtime via sysfs- Extensive documentation about L1TF including various degrees of
mitigations.Thanks to all people who have contributed to this in various ways -
patches, review, testing, backporting - and the fruitful, sometimes
heated, but at the end constructive discussions.There is work in progress to provide other forms of mitigations, which
might be less horrible performance wise for a particular kind of
workloads, but this is not yet ready for consumption due to their
complexity and limitations"* 'l1tf-final' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
x86/microcode: Allow late microcode loading with SMT disabled
tools headers: Synchronise x86 cpufeatures.h for L1TF additions
x86/mm/kmmio: Make the tracer robust against L1TF
x86/mm/pat: Make set_memory_np() L1TF safe
x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert
x86/speculation/l1tf: Invert all not present mappings
cpu/hotplug: Fix SMT supported evaluation
KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry
x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry
x86/speculation: Simplify sysfs report of VMX L1TF vulnerability
Documentation/l1tf: Remove Yonah processors from not vulnerable list
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d
x86: Don't include linux/irq.h from asm/hardirq.h
x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d
x86/irq: Demote irq_cpustat_t::__softirq_pending to u16
x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()
x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'
x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()
cpu/hotplug: detect SMT disabled by BIOS
...
14 Aug, 2018
1 commit
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Pull parisc updates from Helge Deller:
- parisc now uses the generic dma_noncoherent_ops implementation
(Christoph Hellwig)- further memory barrier and spinlock improvements (John David Anglin)
- prepare removal of current_text_addr() functions (Nick Desaulniers)
- improve kernel stack unwinding on parisc (me)
- drop ENOTSUP which was defined on parisc only (me)
* 'parisc-4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix and improve kernel stack unwinding
parisc: Remove unnecessary barriers from spinlock.h
parisc: Remove ordered stores from syscall.S
parisc: prefer _THIS_IP_ and _RET_IP_ statement expressions
parisc: Add HAVE_REGS_AND_STACK_ACCESS_API feature
parisc: Drop architecture-specific ENOTSUP define
parisc: use generic dma_noncoherent_ops
parisc: always use flush_kernel_dcache_range for DMA cache maintainance
parisc: merge pcx_dma_ops and pcxl_dma_ops
13 Aug, 2018
1 commit
-
parisc is the only Linux architecture which has defined a value for ENOTSUP.
All other architectures #define ENOTSUP as EOPNOTSUPP in their libc headers.Having an own value for ENOTSUP which is different than EOPNOTSUPP often gives
problems with userspace programs which expect both to be the same. One such
example is a build error in the libuv package, as can be seen in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900237.Since we dropped HP-UX support, there is no real benefit in keeping an own
value for ENOTSUP. This patch drops the parisc value for ENOTSUP from the
kernel sources. glibc needs no patch, it reuses the exported headers.Signed-off-by: Helge Deller
09 Aug, 2018
1 commit
-
Signed-off-by: David Woodhouse
02 Aug, 2018
1 commit
-
Signed-off-by: Ingo Molnar
30 Jul, 2018
2 commits
-
To cope with the changes in:
12c89130a56a ("x86/asm/memcpy_mcsafe: Add write-protection-fault handling")
60622d68227d ("x86/asm/memcpy_mcsafe: Return bytes remaining")
bd131544aa7e ("x86/asm/memcpy_mcsafe: Add labels for __memcpy_mcsafe() write fault handling")
da7bc9c57eb0 ("x86/asm/memcpy_mcsafe: Remove loop unrolling")This needed introducing a file with a copy of the mcsafe_handle_tail()
function, that is used in the new memcpy_64.S file, as well as a dummy
mcsafe_test.h header.Testing it:
$ nm ~/bin/perf | grep mcsafe
0000000000484130 T mcsafe_handle_tail
0000000000484300 T __memcpy_mcsafe
$
$ perf bench mem memcpy
# Running 'mem/memcpy' benchmark:
# function 'default' (Default memcpy() provided by glibc)
# Copying 1MB bytes ...44.389205 GB/sec
# function 'x86-64-unrolled' (unrolled memcpy() in arch/x86/lib/memcpy_64.S)
# Copying 1MB bytes ...22.710756 GB/sec
# function 'x86-64-movsq' (movsq-based memcpy() in arch/x86/lib/memcpy_64.S)
# Copying 1MB bytes ...42.459239 GB/sec
# function 'x86-64-movsb' (movsb-based memcpy() in arch/x86/lib/memcpy_64.S)
# Copying 1MB bytes ...42.459239 GB/sec
$This silences this perf tools build warning:
Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
Cc: Adrian Hunter
Cc: Dan Williams
Cc: David Ahern
Cc: Jiri Olsa
Cc: Mika Penttilä
Cc: Namhyung Kim
Cc: Tony Luck
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-igdpciheradk3gb3qqal52d0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The new 'io_pgetevents' syscall was wired up in PowerPC in the following
cset:b2f82565f2ca ("powerpc: Wire up io_pgetevents")
Update tools/arch/powerpc/ copy of the asm/unistd.h file so that 'perf
trace' on PowerPC gets it in its syscall table.This elliminated the following perf build warning:
Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/unistd.h' differs from latest version at 'arch/powerpc/include/uapi/asm/unistd.h'
Cc: Alexander Shishkin
Cc: Breno Leitao
Cc: Hendrik Brueckner
Cc: Jiri Olsa
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman
Cc: Namhyung Kim
Cc: Ravi Bangoria
Cc: Thomas Richter
Link: https://lkml.kernel.org/n/tip-9uvu7tz4ud3bxxfyxwryuz47@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
25 Jul, 2018
1 commit
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Will be used for generating the syscall id/string translation table.
The arm64 unistd.h file simply #includes the asm-generic/unistd.h, so,
since we will want to know whether either change, we grab both:arch/arm64/include/uapi/asm/unistd.h
and
include/uapi/asm-generic/unistd.h
Signed-off-by: Kim Phillips
Cc: Alexander Shishkin
Cc: Hendrik Brueckner
Cc: Jiri Olsa
Cc: Michael Ellerman
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Ravi Bangoria
Cc: Thomas Richter
Link: http://lkml.kernel.org/r/20180706163434.1b64ffbcc0284fb79982f53b@arm.com
Signed-off-by: Arnaldo Carvalho de Melo
26 Jun, 2018
1 commit
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Sync KVM ABI additions and x86 CPU features additions - neither of which
has any impact on the tooling build.Cc: Arnaldo Carvalho de Melo
Cc: Peter Zijlstra
Cc: Namhyung Kim
Cc: Jiri Olsa
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar
25 Jun, 2018
1 commit
-
This updates the tools/perf/ copy of the powerpc file used to generate
the syscall table file used to make 'perf trace' become aware of the new
'rseq' syscall, no matter in which system it gets built, i.e. older
systems where the syscalls are not available in the running kernel (via
tracefs) or in the system headers will still be aware of these
syscalls/.From this commit:
bb862b021d75 ("powerpc: Wire up restartable sequences system call")
Silencing this tools/perf build warning:
Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/unistd.h' differs from latest version at 'arch/powerpc/include/uapi/asm/unistd.h'
Cc: Adrian Hunter
Cc: Alexander Shishkin
Cc: Boqun Feng
Cc: David Ahern
Cc: Hendrik Brueckner
Cc: Jiri Olsa
Cc: Mathieu Desnoyers
Cc: Michael Ellerman
Cc: Namhyung Kim
Cc: Ravi Bangoria
Cc: Thomas Gleixner
Cc: Thomas Richter
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-adtgz6u3apd76tghiu9w0k19@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
02 Jun, 2018
1 commit
-
To pick up changes found in these csets:
11fb0683493b x86/speculation: Add virtualized speculative store bypass disable support
d1035d971829 x86/cpufeatures: Add FEATURE_ZEN
52817587e706 x86/cpufeatures: Disentangle SSBD enumeration
7eb8956a7fec x86/cpufeatures: Disentangle MSR_SPEC_CTRL enumeration from IBRS
e7c587da1252 x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
9f65fb29374e x86/bugs: Rename _RDS to _SSBD
764f3c21588a x86/bugs/AMD: Add support to disable RDS on Fam[15,16,17]h if requested
24f7fc83b920 x86/bugs: Provide boot parameters for the spec_store_bypass_disable mitigation
0cc5fa00b0a8 x86/cpufeatures: Add X86_FEATURE_RDS
c456442cd3a5 x86/bugs: Expose /sys/../spec_store_bypassThe usage of this file in tools doesn't use the newly added X86_FEATURE_
defines:CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o
LD /tmp/build/perf/bench/perf-in.o
LD /tmp/build/perf/perf-in.oSilencing this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Jiri Olsa
Cc: Konrad Rzeszutek Wilk
Cc: Namhyung Kim
Cc: Thomas Gleixner
Cc: Tom Lendacky
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-mrwyauyov8c7s048abg26khg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
08 May, 2018
2 commits
-
To sync with the changes made in 85bd0ba1ff98 ("arm/arm64: KVM: Add PSCI
version selection API"), that do not cause any changes in the tools,
just to silence the build warning:Warning: Kernel ABI header at 'tools/arch/arm/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm/include/uapi/asm/kvm.h'
Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Marc Zyngier
Cc: Namhyung Kim
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-7u37pv09xtvet1ll27840w73@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The 912413057395 ("x86/cpufeatures: Enumerate cldemote instruction")
doesn't requires changes in the tools, just copy it to silence this
warning:Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
Cc: Adrian Hunter
Cc: David Ahern
Cc: Fenghua Yu
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-1vo20y5z2drlujfpltjudwk8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
17 Apr, 2018
1 commit
-
Sync the following tooling headers with the latest kernel version:
tools/arch/arm/include/uapi/asm/kvm.h
- New ABI: KVM_REG_ARM_*tools/arch/x86/include/asm/required-features.h
- Removal of NEED_LA57 dependencytools/arch/x86/include/uapi/asm/kvm.h
- New KVM ABI: KVM_SYNC_X86_*tools/include/uapi/asm-generic/mman-common.h
- New ABI: MAP_FIXED_NOREPLACE flagtools/include/uapi/linux/bpf.h
- New ABI: BPF_F_SEQ_NUMBER functionstools/include/uapi/linux/if_link.h
- New ABI: IFLA tun and rmnet supporttools/include/uapi/linux/kvm.h
- New ABI: hyperv eventfd and CONN_ID_MASK support plus header cleanupstools/include/uapi/sound/asound.h
- New ABI: SNDRV_PCM_FORMAT_FIRST PCM format specifiertools/perf/arch/x86/entry/syscalls/syscall_64.tbl
- The x86 system call table description changed due to the ptregs changes and the renames, in:d5a00528b58c: syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
5ac9efa3c50d: syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
ebeb8c82ffaf: syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32Also fix the x86 syscall table warning:
-Warning: Kernel ABI header at 'tools/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'
+Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl'None of these changes impact existing tooling code, so we only have to copy the kernel version.
Signed-off-by: Ingo Molnar
Cc: Adrian Hunter
Cc: Alexander Potapenko
Cc: Alexander Shishkin
Cc: Alexei Starovoitov
Cc: Alexey Budankov
Cc: Andi Kleen
Cc: Andrey Ryabinin
Cc: Andy Lutomirski
Cc: Arnd Bergmann
Cc: Brian Robbins
Cc: Clark Williams
Cc: Daniel Borkmann
Cc: David Ahern
Cc: Dmitriy Vyukov
Cc: Heiko Carstens
Cc: Hendrik Brueckner
Cc: Jesper Dangaard Brouer
Cc: Jin Yao
Cc: Jiri Olsa
Cc: Josh Poimboeuf
Cc: Kan Liang
Cc: Kim Phillips
Cc: Linus Torvalds
Cc: Li Zhijian
Cc: Mark Rutland
Cc: Martin Liška
Cc: Martin Schwidefsky
Cc: Matthias Kaehlcke
Cc: Miguel Bernal Marin
Cc: Namhyung Kim
Cc: Naveen N. Rao
Cc: Peter Zijlstra
Cc: Ravi Bangoria
Cc: Sandipan Das
Cc: Stephane Eranian
Cc: Stephen Rothwell
Cc: Takuya Yamamoto
Cc: Thomas Gleixner
Cc: Thomas Richter
Cc: Wang Nan
Cc: William Cohen
Cc: Yonghong Song
Link: http://lkml.kernel.org/r/20180416064024.ofjtrz5yuu3ykhvl@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
04 Apr, 2018
1 commit
-
…nux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
- Show only failing syscalls with 'perf trace --failure' (Arnaldo Carvalho de Melo)
e.g: See what 'openat' syscalls are failing:
# perf trace --failure -e openat
762.323 ( 0.007 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video2) = -1 ENOENT No such file or directory
<SNIP N /dev/videoN open attempts... sigh, where is that improvised camera lid?!? >
790.228 ( 0.008 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video63) = -1 ENOENT No such file or directory
^C#- Show information about the event (freq, nr_samples, total period/nr_events) in
the annotate --tui and --stdio2 'perf annotate' output, similar to the
first line in the 'perf report --tui', but just for the samples for a
the annotated symbol (Arnaldo Carvalho de Melo)- Introduce 'perf version --build-options' to show what features were
linked, aliased as well as a shorter 'perf -vv' (Jin Yao)- Add a "dso_size" sort order (Kim Phillips)
- Remove redundant ')' in the tracepoint output in 'perf trace' (Changbin Du)
- Synchronize x86's cpufeatures.h, no effect on toolss (Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
03 Apr, 2018
1 commit
-
Pul removal of obsolete architecture ports from Arnd Bergmann:
"This removes the entire architecture code for blackfin, cris, frv,
m32r, metag, mn10300, score, and tile, including the associated device
drivers.I have been working with the (former) maintainers for each one to
ensure that my interpretation was right and the code is definitely
unused in mainline kernels. Many had fond memories of working on the
respective ports to start with and getting them included in upstream,
but also saw no point in keeping the port alive without any users.In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company in
charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
seems that all the SoC product lines are still around, but have not
used the custom CPU architectures for several years at this point. In
contrast, CPU instruction sets that remain popular and have actively
maintained kernel ports tend to all be used across multiple licensees.[ See the new nds32 port merged in the previous commit for the next
generation of "one company in charge of an SoC line, a CPU
microarchitecture and a software ecosystem" - Linus ]The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I
made sure that they are all unused. Some architectures (notably tile,
mn10300, and blackfin) are still being shipped in products with old
kernels, but those products will never be updated to newer kernel
releases.After this series, we still have a few architectures without mainline
gcc support:- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.- openrisc, risc-v and nds32 are still in the process of finishing
their support or getting it added to mainline gcc in the first
place. They all have patched gcc-7.3 ports that work to some
degree, but complete upstream support won't happen before gcc-8.1.
Csky posted their first kernel patch set last week, their situation
will be similar[ Palmer Dabbelt points out that RISC-V support is in mainline gcc
since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]"This really says it all:
2498 files changed, 95 insertions(+), 467668 deletions(-)
* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
MAINTAINERS: UNICORE32: Change email account
staging: iio: remove iio-trig-bfin-timer driver
tty: hvc: remove tile driver
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
serial: remove tile uart driver
serial: remove m32r_sio driver
serial: remove blackfin drivers
serial: remove cris/etrax uart drivers
usb: Remove Blackfin references in USB support
usb: isp1362: remove blackfin arch glue
usb: musb: remove blackfin port
usb: host: remove tilegx platform glue
pwm: remove pwm-bfin driver
i2c: remove bfin-twi driver
spi: remove blackfin related host drivers
watchdog: remove bfin_wdt driver
can: remove bfin_can driver
mmc: remove bfin_sdh driver
input: misc: remove blackfin rotary driver
input: keyboard: remove bf54x driver
...
02 Apr, 2018
1 commit
-
Due to these commits:
1da961d72ab0 ("x86/cpufeatures: Add Intel Total Memory Encryption cpufeature")
7958b2246fad ("x86/cpufeatures: Add Intel PCONFIG cpufeature")To silence this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
Nothing in those csets requires changes in tools/perf/, so just
sync it to silence the build.Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Kirill A. Shutemov
Cc: Namhyung Kim
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-m2yl8wj0uxs8pncq2ncfcx46@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
16 Mar, 2018
1 commit
-
The Tile architecture port was added by Chris Metcalf in 2010, and
maintained until early 2018 when he orphaned it due to his departure
from Mellanox, and nobody else stepped up to maintain it. The product
line is still around in the form of the BlueField SoC, but no longer
uses the Tile architecture.There are also still products for sale with Tile-GX SoCs, notably the
Mikrotik CCR router family. The products all use old (linux-3.3) kernels
with lots of patches and won't be upgraded by their manufacturers. There
have been efforts to port both OpenWRT and Debian to these, but both
projects have stalled and are very unlikely to be continued in the future.Given that we are reasonably sure that nobody is still using the port
with an upstream kernel any more, it seems better to remove it now while
the port is in a good shape than to let it bitrot for a few years first.Cc: Chris Metcalf
Cc: John Paul Adrian Glaubitz
Link: http://www.mellanox.com/page/npu_multicore_overview
Link: https://jenkins.debian.net/view/rebootstrap/job/rebootstrap_tilegx_gcc7/
Signed-off-by: Arnd Bergmann
10 Mar, 2018
4 commits
-
The Sunplus S+core architecture was added in 2009 by Chen Liqin,
who has been co-maintaining it with Lennox Wu
since then, but after they both left the company, nobody else has shown
any interest in the port and it has seen almost no activity other than
tree-wide changes.The gcc port was removed a few years ago due to the inactivity.
While the sunplus website still advertises products with unspecified
RISC cores that might be S+core based, it's very clear that the Linux
port is completely abandoned at this point.This removes all files related to the architecture.
Acked-by: Lennox Wu
Link: http://www.sunplus.com/
Signed-off-by: Arnd Bergmann -
The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata
Signed-off-by: Arnd Bergmann -
The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.This removes all FRV specific files from the kernel.
Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells
Signed-off-by: Arnd Bergmann -
Remove the MN10300 arch as the hardware is defunct.
Suggested-by: Arnd Bergmann
Signed-off-by: David Howells
cc: Masahiro Yamada
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann
07 Mar, 2018
1 commit
-
Conflicts:
tools/perf/perf.hSigned-off-by: Ingo Molnar
05 Mar, 2018
1 commit
-
The changes in dd84441a7971 ("x86/speculation: Use IBRS if available
before calling into firmware") don't need any kind of special treatment
in the current tools/perf/ codebase, so just update the copy to get rid
of the perf build warning:BUILD: Doing 'make -j4' parallel build
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'Cc: Adrian Hunter
Cc: David Ahern
Cc: David Woodhouse
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-mzmuxocrf96v922xkerey3ns@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
17 Feb, 2018
1 commit
-
Will be used for generating the syscall id/string translation table.
Committer notes:
Update it already to catch with these csets applied since Ravi first
submitted this patch:3350eb2ea127 powerpc: sys_pkey_mprotect() system call
9499ec1b5e82 powerpc: sys_pkey_alloc() and sys_pkey_free() system callsSo now 'perf trace' on ppc now knows about the pkey_ syscals.
Signed-off-by: Ravi Bangoria
Cc: Alexander Shishkin
Cc: Hendrik Brueckner
Cc: Jiri Olsa
Cc: Michael Ellerman
Cc: Namhyung Kim
Cc: Thomas Richter
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20180129083417.31240-2-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo
15 Feb, 2018
2 commits
-
This reverts commit f120c7b187e6c418238710b48723ce141f467543 which is no
longer required with the introduction of a syscall.tbl on s390.Signed-off-by: Hendrik Brueckner
Cc: Jiri Olsa
Cc: Michael Petlan
Cc: Thomas Richter
Cc: linux-s390@vger.kernel.org
LPU-Reference: 1518090470-2899-2-git-send-email-brueckner@linux.vnet.ibm.com
Link: https://lkml.kernel.org/n/tip-q1lg0nvhha1tk39ri9aqalcb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Sync the following tooling headers with the latest kernel version:
tools/arch/powerpc/include/uapi/asm/kvm.h
tools/arch/x86/include/asm/cpufeatures.h
tools/include/uapi/drm/i915_drm.h
tools/include/uapi/linux/if_link.h
tools/include/uapi/linux/kvm.hAll the changes are new ABI additions which don't impact their use
in existing tooling.Cc: Arnaldo Carvalho de Melo
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: Namhyung Kim
Cc: Jiri Olsa
Cc: Stephen Rothwell
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar
03 Feb, 2018
3 commits
-
Sync tools/arch/x86/include/asm/{cpu,disabled-,required-}features.h with
the changes in:2961298efe1e ("x86/cpufeatures: Clean up Spectre v2 related CPUID flags")
20ffa1caecca ("x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support")
5d10cbc91d9e ("x86/cpufeatures: Add AMD feature bits for Speculation Control")
fc67dd70adb7 ("x86/cpufeatures: Add Intel feature bits for Speculation Control")
95ca0ee86360 ("x86/cpufeatures: Add CPUID_7_EDX CPUID leaf")
a511e7935378 ("x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature")
4fdec2034b75 ("x86/cpufeature: Move processor tracing out of scattered features")
c995efd5a740 ("x86/retpoline: Fill RSB on context switch for affected CPUs")
76b043848fd2 ("x86/retpoline: Add initial retpoline support")
99c6fa2511d8 ("x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]")
de791821c295 ("x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN")
6cff64b86aaa ("x86/mm: Use INVPCID for __native_flush_tlb_single()")None will entail changes in the tools/perf/, synchronizing to elliminate
these perf build warnings:Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/required-features.h' differs from latest version at 'arch/x86/include/asm/required-features.h'
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'Cc: Adrian Hunter
Cc: Dave Hansen
Cc: David Ahern
Cc: David Woodhouse
Cc: Fenghua Yu
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paolo Bonzini
Cc: Thomas Gleixner
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-dbdjack1k92xar5ccuq4el1h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The changes in the 3214d01f139b ("KVM: PPC: Book3S: Provide information
about hardware/firmware CVE workarounds") commit right now will not
produce any change in the tools, but that is because we still need to
improve tools/perf/trace/beauty/kvm_ioctl.sh to build per arch string
tables, so that we avoid assigning multiple times to the same command
string entry, i.e. multiple defines, for different arches, have the same
value, causing this:In file included from trace/beauty/ioctl.c:82:0:
/tmp/build/perf/trace/beauty/generated/ioctl/kvm_ioctl_array.c: In function ‘ioctl__scnprintf_kvm_cmd’:
/tmp/build/perf/trace/beauty/generated/ioctl/kvm_ioctl_array.c:76:11: error: initialized field overwritten [-Werror=override-init]
/tmp/build/perf/trace/beauty/generated/ioctl/kvm_ioctl_array.c:88:11: note: (near initialization for ‘kvm_ioctl_cmds[165]’)
/tmp/build/perf/trace/beauty/generated/ioctl/kvm_ioctl_array.c:90:11: error: initialized field overwritten [-Werror=override-init]
[0xa6] = "PPC_GET_SMMU_INFO",
^~~~~~~~~~~~~~~~~~~So the onlye effect of updating the tools/ copy of ppc's kvm.h header
is to silence these perf build warnings:Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/kvm.h' differs from latest version at 'arch/powerpc/include/uapi/asm/kvm.h'At some point we should do what we did for the errno tables and create
per-arch string translation tables for the KVM ioctl commands for the
architectures supporting KVM, such as s/390, PowerPC, x86_64 and ARM.Cc: Adrian Hunter
Cc: David Ahern
Cc: Hendrik Brueckner
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Ravi Bangoria
Cc: Thomas Richter
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-jmcf78tqiudgn46zqfw2tgt2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The 35b3fde6203b ("KVM: s390: wire up bpb feature") was noticed by the
perf build process:Warning: Kernel ABI header at 'tools/arch/s390/include/uapi/asm/kvm.h' differs from latest version at 'arch/s390/include/uapi/asm/kvm.h'
The changes in this cset don't cause or require changes in tools/perf/,
so just update the copy to silence the build warning.Cc: Adrian Hunter
Cc: Christian Borntraeger
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Radim Krčmář
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-kif2fdkcaewj8iqw6lwyil8s@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
23 Jan, 2018
1 commit
-
For each arch in tools/perf/arch, grab a copy of errno.h.
This is a pre-req to generate an architecture specific mapping of errno
numbers to their names. This errno mapping can be used by perf trace to
support cross-architecture trace reports and to get rid of the
audit-libs dependency.Signed-off-by: Hendrik Brueckner
Reviewed-by: Thomas Richter
Cc: Jiri Olsa
Cc: Michael Petlan
Cc: linux-s390@vger.kernel.org
LPU-Reference: 1516352177-11106-2-git-send-email-brueckner@linux.vnet.ibm.com
Link: https://lkml.kernel.org/n/tip-73azjhrzpjsskwi129020i2u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
10 Jan, 2018
1 commit
-
Two kernel headers got modified recently due to meltdown/spectre, in:
a89f040fa34e ("x86/cpufeatures: Add X86_BUG_CPU_INSECURE")
which are used by tooling as well:
arch/x86/include/asm/cpufeatures.h
arch/x86/include/asm/disabled-features.hNone of those changes have an effect on tooling, so do a plain copy.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Thomas Gleixner
Cc: Wang Nan
Link: https://lkml.kernel.org/n/tip-qqzcs8ri3vks8cypg0puk0ae@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
06 Jan, 2018
1 commit
-
Signed-off-by: Ingo Molnar
01 Jan, 2018
1 commit
-
Pull perf fixes from Thomas Gleixner:
- plug a memory leak in the intel pmu init code
- clang fixes
- tooling fix to avoid including kernel headers
- a fix for jvmti to generate correct debug information for inlined
code- replace backtick with a regular shell function
- fix the build in hardened environments
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Plug memory leak in intel_pmu_init()
x86/asm: Allow again using asm.h when building for the 'bpf' clang target
tools arch s390: Do not include header files from the kernel sources
perf jvmti: Generate correct debug information for inlined code
perf tools: Fix up build in hardened environments
perf tools: Use shell function for perl cflags retrieval