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2017-05-24tools/include: Sync kernel ABI headers with tooling headersIngo Molnar9-13/+82
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 kernel Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yao Jin <yao.jin@linux.intel.com> Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170524065721.j2mlch6bgk5klgbc@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-05-08Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-1/+2
Pull KVM updates from Paolo Bonzini: "ARM: - HYP mode stub supports kexec/kdump on 32-bit - improved PMU support - virtual interrupt controller performance improvements - support for userspace virtual interrupt controller (slower, but necessary for KVM on the weird Broadcom SoCs used by the Raspberry Pi 3) MIPS: - basic support for hardware virtualization (ImgTec P5600/P6600/I6400 and Cavium Octeon III) PPC: - in-kernel acceleration for VFIO s390: - support for guests without storage keys - adapter interruption suppression x86: - usual range of nVMX improvements, notably nested EPT support for accessed and dirty bits - emulation of CPL3 CPUID faulting generic: - first part of VCPU thread request API - kvm_stat improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits) kvm: nVMX: Don't validate disabled secondary controls KVM: put back #ifndef CONFIG_S390 around kvm_vcpu_kick Revert "KVM: Support vCPU-based gfn->hva cache" tools/kvm: fix top level makefile KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING KVM: Documentation: remove VM mmap documentation kvm: nVMX: Remove superfluous VMX instruction fault checks KVM: x86: fix emulation of RSM and IRET instructions KVM: mark requests that need synchronization KVM: return if kvm_vcpu_wake_up() did wake up the VCPU KVM: add explicit barrier to kvm_vcpu_kick KVM: perform a wake_up in kvm_make_all_cpus_request KVM: mark requests that do not need a wakeup KVM: remove #ifndef CONFIG_S390 around kvm_vcpu_wake_up KVM: x86: always use kvm_make_request instead of set_bit KVM: add kvm_{test,clear}_request to replace {test,clear}_bit s390: kvm: Cpu model support for msa6, msa7 and msa8 KVM: x86: remove irq disablement around KVM_SET_CLOCK/KVM_GET_CLOCK kvm: better MWAIT emulation for guests KVM: x86: virtualize cpuid faulting ...
2017-04-26s390: kvm: Cpu model support for msa6, msa7 and msa8Jason J. Herne1-1/+2
msa6 and msa7 require no changes. msa8 adds kma instruction and feature area. Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2017-04-24tools arch x86: Sync cpufeatures.hArnaldo Carvalho de Melo1-0/+1
To catch changes made in: 90218ac77d05 ("x86/cpufeature: Detect CPUID faulting support") No changes needed in the tools using this file at this time. Cc: Kyle Huey <me@kylehuey.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-qiqsj5qg2ljbsbfre2zaf9v4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-04-24tools arch: Sync arch/x86/lib/memcpy_64.S with the kernelArnaldo Carvalho de Melo1-1/+1
Just a minor fix done in: Fixes: 26a37ab319a2 ("x86/mce: Fix copy/paste error in exception table entries") Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/n/tip-ni9jzdd5yxlail6pq8cuexw2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-20tools headers: Sync {tools/,}arch/powerpc/include/uapi/asm/kvm.hArnaldo Carvalho de Melo1-0/+22
The changes in the following csets are not relevant for what is used in tools/perf/arch/powerpc/util/kvm-stat.c, but lets sync it to silence the diff detector in the tools build system: c92701322711 ("KVM: PPC: Book3S HV: Add userspace interfaces for POWER9 MMU") 17d48610ae0f ("KVM: PPC: Book 3S: XICS: Implement ICS P/Q states") Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-nsqxpyzcv4ywesikhhhrgfgc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-20tools headers: Sync {tools/,}arch/arm{64}/include/uapi/asm/kvm.hArnaldo Carvalho de Melo2-0/+26
The changes in the following csets are not relevant for 'perf kvm' usage but lets sync it to silence the diff detector in the tools build system: e96a006cb066 ("KVM: arm/arm64: vgic: Implement KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO ioctl") d017d7b0bd7a ("KVM: arm/arm64: vgic: Implement VGICv3 CPU interface access") 94574c9488e2 ("KVM: arm/arm64: vgic: Add distributor and redistributor access") Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Vijaya Kumar K <Vijaya.Kumar@cavium.com> Cc: Yunlong Song <yunlong.song@huawei.com> Link: http://lkml.kernel.org/n/tip-nsqxpyzcv4ywesikhhhrgfgc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-17tools headers: Sync {tools/,}arch/x86/include/asm/cpufeatures.hArnaldo Carvalho de Melo1-1/+2
We use those in tools/arch/x86/lib/mem{cpy,set}_64.S, in turn used in the 'perf bench mem' benchmarks. The changes in the following csets are not relevant for this usecase, but lets sync it to silence the diff detector in the tools build system: 6fb895692a03 ("x86/cpufeature: Add 5-level paging detection") Link: http://lkml.kernel.org/n/tip-nsqxpyzcv4ywesikhhhrgfgc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-16tools headers: Sync {tools/,}arch/x86/include/asm/cpufeatures.hArnaldo Carvalho de Melo1-3/+2
We use those in tools/arch/x86/lib/mem{cpy,set}_64.S, in turn used in the 'perf bench mem' benchmarks. The changes in the following csets are not relevant for this usecase, but lets sync it to silence the diff detector in the tools build system: 78d1b296843a ("x86/cpu: Add X86_FEATURE_CPUID") 3bba73b1b7a8 ("x86/cpufeature: Move RING3MWAIT feature to avoid conflicts") Cc: Borislav Petkov <bp@suse.de> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/n/tip-nsqxpyzcv4ywesikhhhrgfgc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-04tools arch x86: Introduce atomic_cmpxchg()Arnaldo Carvalho de Melo1-0/+7
Will be used by atomic_cmpxchg_relaxed(), in turn used by refcount.h. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kdmovd3l4gw5b1w31ypr6ddv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-03-04tools arch x86: Include asm/cmpxchg.hArnaldo Carvalho de Melo1-0/+89
Will be included from atomic.h and used in refcount.h Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-pzrydfee75mhq64kazxmf9it@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-21Merge branch 'x86-cpufeature-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cpufeature updates from Ingo Molnar: "The main changes in this cycle were related to enable ring-3 MONITOR/MWAIT instructions support on supported CPUs, by Grzegorz Andrejczuk and Piotr Luc" * 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpufeature: Move RING3MWAIT feature to avoid conflicts x86/cpufeature: Enable RING3MWAIT for Knights Mill x86/cpufeature: Enable RING3MWAIT for Knights Landing x86/cpufeature: Add RING3MWAIT to CPU features x86/elf: Add HWCAP2 to expose ring 3 MONITOR/MWAIT x86/msr: Add MSR_MISC_FEATURE_ENABLES and RING3MWAIT bit x86/cpufeature: Add AVX512_VPOPCNTDQ feature
2017-01-30tools headers: Sync {tools/,}arch/powerpc/include/uapi/asm/kvm.h, ↵Ingo Molnar3-0/+25
{tools/,}arch/x86/include/asm/cpufeatures.h and {tools/,}arch/arm/include/uapi/asm/kvm.h The following upstream headers were updated: - The x86 cpufeatures.h file picked up a couple of new feature entries - The PowerPC and ARM KVM headers picked up new features None of which requires changes to perf tooling, so refresh the tooling copy. Solves these build time warnings: Warning: arch/x86/include/asm/cpufeatures.h differs from kernel Warning: arch/powerpc/include/uapi/asm/kvm.h differs from kernel Warning: arch/arm/include/uapi/asm/kvm.h differs from kernel Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170130081131.GA8322@gmail.com [ resync tools/arch/x86/include/asm/cpufeatures.h ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-16x86/cpufeature: Add AVX512_VPOPCNTDQ featurePiotr Luc1-0/+1
Vector population count instructions for dwords and qwords are going to be available in future Intel Xeon & Xeon Phi processors. Bit 14 of CPUID[level:0x07, ECX] indicates that the instructions are supported by a processor. The specification can be found in the Intel Software Developer Manual (SDM) and in the Instruction Set Extensions Programming Reference (ISE). Populate the feature bit and clear it when xsave is disabled. Signed-off-by: Piotr Luc <piotr.luc@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: kvm@vger.kernel.org Cc: Radim Krčmář <rkrcmar@redhat.com> Link: http://lkml.kernel.org/r/20170110173403.6010-2-piotr.luc@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-01-11tools: Sync x86's vmx.h with the kernelArnaldo Carvalho de Melo1-0/+5
To pick the changes from: 1b07304c587d ("KVM: nVMX: support descriptor table exits") That adds entries to VMX_EXIT_REASONS, that is used by tools/perf/arch/x86/util/kvm-stat.c. This also picks the changes in: 1dc35dacc16b ("KVM: nVMX: check host CR3 on vmentry and vmexit") But these are not used in 'perf kvm stat', do it just to silence the kernel/tools file cache coherency detector: $ make -C tools/perf make: Entering directory '/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: arch/x86/include/uapi/asm/vmx.h differs from kernel Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Ladi Prosek <lprosek@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-56uowkk8t5zje49a42asffcy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-11-01Merge branch 'core/urgent' into x86/fpu, to merge fixesIngo Molnar1-0/+2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-19x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS featuresPiotr Luc1-0/+2
AVX512_4VNNIW - Vector instructions for deep learning enhanced word variable precision. AVX512_4FMAPS - Vector instructions for deep learning floating-point single precision. These new instructions are to be used in future Intel Xeon & Xeon Phi processors. The bits 2&3 of CPUID[level:0x07, EDX] inform that new instructions are supported by a processor. The spec can be found in the Intel Software Developer Manual (SDM) or in the Instruction Set Extensions Programming Reference (ISE). Define new feature flags to enumerate the new instructions in /proc/cpuinfo accordingly to CPUID bits and add the required xsave extensions which are required for proper operation. Signed-off-by: Piotr Luc <piotr.luc@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20161018150111.29926-1-piotr.luc@intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-18x86/fpu: Finish excising 'eagerfpu'Andy Lutomirski1-1/+0
Now that eagerfpu= is gone, remove it from the docs and some comments. Also sync the changes to tools/. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: Rik van Riel <riel@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/cf430dd4481d41280e93ac6cf0def1007a67fc8e.1476740397.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-06tools: Synchronize tools/arch/x86/include/asm/cpufeatures.hArnaldo Carvalho de Melo1-1/+0
Due to ffb173e657fa ("x86/mce: Drop X86_FEATURE_MCE_RECOVERY and the related model string test"), no changes needed in any other place as no tool uses X86_FEATURE_MCE_RECOVERY. Silences this detected drift when building tools/perf: Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-f3sfimg58t3cycbbl8f5cwxf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-10-06perf bench mem: Sync memcpy assembly sources with the kernelArnaldo Carvalho de Melo1-3/+3
Commit 9a6fb28a355d ("x86/mce: Improve memcpy_mcsafe()") renames memcpy_mcsafe() to memcpy_mcsafe_unrolled(), making tools/arch/x86/lib/memcpy_64.S drift from the its kernel counterpart, triggering this warning in the perf build: Warning: tools/arch/x86/lib/memcpy_64.S differs from kernel Sync that copy to acknowledge that, no changes to 'perf bench' are needed, as this function is not used there. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-xfwc1raw8obyrctxerwt1bbb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-19tools include: Add mman macros needed by perf for all archWang Nan20-0/+66
Some macros required by tools/perf/trace/beauty/mmap.c is not support for all architectures. For example, MAP_32BIT is defined on x86 only, alpha doesn't define MADV_HWPOISON and MADV_SOFT_OFFLINE. This patch regenerates mman.h for each arch, defines these missing macros for perf. For missing MADV_*, fall back to asm-generic/mman-common because they are in a 'case ...' statement. For flags, define it to 0. Following is the script to generate this patch: macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'` rm `find ./tools/arch/ -name mman.h` for arch in `ls tools/arch` do [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm src=arch/$arch/include/uapi/asm/mman.h target=tools/arch/$arch/include/uapi/asm/mman.h.tmp real_target=tools/arch/$arch/include/uapi/asm/mman.h guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H rm -f $target [ -f $src ] && for m in $macros do if grep '#define[ \t]*'$m $src > /dev/null 2>&1 then grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target fi done if [ -f $src ] then grep '#include <asm-generic' $src >> $target else echo "#include <asm-generic/mman.h>" >> $target fi touch $real_target for m in $macros do if cat << EOF | gcc -Itools/arch/$arch/include -Itools/arch/$arch/include/uapi -Iinclude/ -Iinclude/uapi -E - | grep $m > /dev/null 2>&1 #include <uapi/asm/mman.h.tmp> #include <uapi/linux/mman.h> $m EOF then echo "Fixing $m for $arch" echo "/* $m is undefined on $arch, fix it for perf */" >> $target if echo $m | grep '^MADV_' > /dev/null 2>&1 then grep -h '#define[ \t]*'$m include/uapi/asm-generic/mman-common.h | sed 's/[ \t]*\/\*.*$//g' >> $target else echo "#define $m 0" >> $target fi fi done real_target=tools/arch/$arch/include/uapi/asm/mman.h echo '#ifndef '$guard > $real_target echo '#define '$guard >> $real_target cat $target | sed 's|asm-generic|uapi/asm-generic|g' >> $real_target echo '#endif' >> $real_target rm $target echo "$real_target" done exit 0 # Following macros are extracted from: # tools/perf/trace/beauty/mmap.c # # start macro list MADV_DODUMP MADV_DOFORK MADV_DONTDUMP MADV_DONTFORK MADV_DONTNEED MADV_FREE MADV_HUGEPAGE MADV_HWPOISON MADV_MERGEABLE MADV_NOHUGEPAGE MADV_NORMAL MADV_RANDOM MADV_REMOVE MADV_SEQUENTIAL MADV_SOFT_OFFLINE MADV_UNMERGEABLE MADV_WILLNEED MAP_32BIT MAP_ANONYMOUS MAP_DENYWRITE MAP_EXECUTABLE MAP_FILE MAP_FIXED MAP_GROWSDOWN MAP_HUGETLB MAP_LOCKED MAP_NONBLOCK MAP_NORESERVE MAP_POPULATE MAP_PRIVATE MAP_SHARED MAP_STACK MAP_UNINITIALIZED MREMAP_FIXED MREMAP_MAYMOVE PROT_EXEC PROT_GROWSDOWN PROT_GROWSUP PROT_NONE PROT_READ PROT_SEM PROT_WRITE Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Kim Phillips <kim.phillips@arm.com> Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Fixes: 277cf08f3feb ("perf trace beauty mmap: Fix defines for non !x86_64") Link: http://lkml.kernel.org/r/1473850649-83389-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13tools include: Add uapi mman.h for each architectureWang Nan21-0/+249
Some mmap related macros have different values for different architectures. This patch introduces uapi mman.h for each architectures. Three headers are cloned from kernel include to tools/include: tools/include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman.h tools/include/uapi/linux/mman.h The main part of this patch is generated by following script: macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'` for arch in `ls tools/arch` do [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm src=arch/$arch/include/uapi/asm/mman.h target=tools/arch/$arch/include/uapi/asm/mman.h guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H echo '#ifndef '$guard > $target echo '#define '$guard >> $target [ -f $src ] && for m in $macros do if grep '#define[ \t]*'$m $src > /dev/null 2>&1 then grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target fi done if [ -f $src ] then grep '#include <asm-generic' $src >> $target else echo "#include <asm-generic/mman.h>" >> $target fi echo '#endif' >> $target echo "$target" done exit 0 # Following macros are extracted from: # tools/perf/trace/beauty/mmap.c # # start macro list MADV_DODUMP MADV_DOFORK MADV_DONTDUMP MADV_DONTFORK MADV_DONTNEED MADV_HUGEPAGE MADV_HWPOISON MADV_MERGEABLE MADV_NOHUGEPAGE MADV_NORMAL MADV_RANDOM MADV_REMOVE MADV_SEQUENTIAL MADV_SOFT_OFFLINE MADV_UNMERGEABLE MADV_WILLNEED MAP_32BIT MAP_ANONYMOUS MAP_DENYWRITE MAP_EXECUTABLE MAP_FILE MAP_FIXED MAP_GROWSDOWN MAP_HUGETLB MAP_LOCKED MAP_NONBLOCK MAP_NORESERVE MAP_POPULATE MAP_PRIVATE MAP_SHARED MAP_STACK MAP_UNINITIALIZED MREMAP_FIXED MREMAP_MAYMOVE PROT_EXEC PROT_GROWSDOWN PROT_GROWSUP PROT_NONE PROT_READ PROT_SEM PROT_WRITE Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1473684871-209320-2-git-send-email-wangnan0@huawei.com [ Added new files to tools/perf/MANIFEST to fix the detached tarball build, add mman.h for ARC ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-16tools: Sync kvm related header files for arm64 and s390Arnaldo Carvalho de Melo3-0/+44
From a quick look nothing stands out as requiring changes to kvm tools such as tools/perf/arch/s390/util/kvm-stat.c. Silences these header checking warnings: $ make -C tools/perf make: Entering directory '/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j4' parallel build Warning: tools/arch/s390/include/uapi/asm/kvm.h differs from kernel Warning: tools/arch/s390/include/uapi/asm/sie.h differs from kernel Warning: tools/arch/arm64/include/uapi/asm/kvm.h differs from kernel <SNIP> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Scott Wood <scottwood@freescale.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-btutge414g516qmh6r5ienlj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09tools: Sync cpufeatures headers with the kernelArnaldo Carvalho de Melo2-0/+4
Due to: 1e61f78baf89 ("x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated") No changes to tools using those headers (tools/arch/x86/lib/mem{set,cpu}_64.S) seems necessary. Detected by the tools build header drift checker: $ make -C tools/perf O=/tmp/build/perf make: Entering directory '/home/acme/git/linux/tools/perf' BUILD: Doing 'make -j4' parallel build GEN /tmp/build/perf/common-cmds.h Warning: tools/arch/x86/include/asm/disabled-features.h differs from kernel Warning: tools/arch/x86/include/asm/required-features.h differs from kernel Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel CC /tmp/build/perf/util/probe-finder.o CC /tmp/build/perf/builtin-help.o <SNIP> ^C$ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ja75m7zk8j0jkzmrv16i5ehw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-09tools: Sync cpufeatures.h and vmx.h with the kernelArnaldo Carvalho de Melo2-9/+4
There were changes related to the deprecation of the "pcommit" instruction: fd1d961dd681 ("x86/insn: remove pcommit") dfa169bbee00 ("Revert "KVM: x86: add pcommit support"") No need to update anything in the tools, as "pcommit" wasn't being listed on the VMX_EXIT_REASONS in the tools/perf/arch/x86/util/kvm-stat.c file. Just grab fresh copies of these files to silence the file cache coherency detector: $ 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/arch/x86/include/asm/cpufeatures.h differs from kernel Warning: tools/arch/x86/include/uapi/asm/vmx.h differs from kernel INSTALL GTK UI <SNIP> # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com> Link: http://lkml.kernel.org/n/tip-07pmcc1ysydhyyxbmp1vt0l4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12tools: Copy the bitsperlong.h files from the kernelArnaldo Carvalho de Melo17-0/+185
We use it in bitops/__ffs.h and bitops/atomic.h, that we also got from the kernel, but were getting it from either newer systems that carry it in /usr/include, or from the kernel sources, that we decided not to touch from tools/ code. Fix it. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-lwqvgbuitjmrdpjmjp6zqnyx@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12tools: Copy the header files needed by perf toolsArnaldo Carvalho de Melo11-0/+2459
Those kernel files were being directly accessed, which we're not allowing anymore to avoid that changes in the kernel side break tooling. Warn if these copies drift from the original files. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: David Ahern <dsahern@gmail.com> Cc: Eric Auger <eric.auger@linaro.org> Cc: Hemant Kumar <hemant@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yunlong Song <yunlong.song@huawei.com> Link: http://lkml.kernel.org/n/tip-mnopguymhnwzjhw3mowllvsy@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf tools: Introduce weak alternative to sched_getcpu()Arnaldo Carvalho de Melo2-0/+6
Which is just a wrapper for sys_getcpu and is not present in at least musl libc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kblef7svmhr0g93kkx78envg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12tools: Copy uapi/asm/perf_regs.h from the kernelArnaldo Carvalho de Melo4-0/+146
To allow the build to complete on older systems, where those files are either not uptodate, lacking some recent additions or not present at all. And check if the copy drifts from the kernel. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-sxf7rpow2blsno5f7t6n0sqz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf bench: Copy kernel files needed to build mem{cpy,set} x86_64 benchmarksArnaldo Carvalho de Melo5-0/+914
We can't access kernel files directly from tools/, so copy the required bits, and make sure that we detect when the original files, in the kernel, gets modified. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-z7e76274ch5j4nugv048qacb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-12perf tools: Move syscall number fallbacks from perf-sys.h to ↵Arnaldo Carvalho de Melo2-0/+18
tools/arch/x86/include/asm/ And remove the empty tools/arch/x86/include/asm/unistd_{32,64}.h files introduced by eae7a755ee81 ("perf tools, x86: Build perf on older user-space as well"). This way we get closer to mirroring the kernel for cases where __NR_ can't be found for some include path/_GNU_SOURCE/whatever scenario. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kpj6m3mbjw82kg6krk2z529e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08tools include: Add basic atomic.h implementation from the kernel sourcesArnaldo Carvalho de Melo2-0/+106
Uses the arch/x86/ kernel code for x86_64/i386, fallbacking to a gcc intrinsics implementation that has been tested in at least sparc64. Will be used for reference counting in tools/perf. Acked-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-knfpjowhgyh6x4z0kfuk389j@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move tile barrier.h stuff to tools/arch/tile/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+15
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-jwcs4r1lo0ld8a4ricbe0zug@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move mips barrier.h stuff to tools/arch/mips/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+20
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-c5a8m8lbjuy0agep6giykxbz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move xtensa barrier.h stuff to ↵Arnaldo Carvalho de Melo1-0/+18
tools/arch/xtensa/include/asm/barrier.h We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-lp68dspbtjcwbpzd7x5c6zp5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move arm(64) barrier.h stuff to ↵Arnaldo Carvalho de Melo2-0/+28
tools/arch/arm*/include/asm/barrier.h We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-cgfhreaejd7ohitdjccu9k2o@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move ia64 barrier.h stuff to tools/arch/ia64/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+48
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-4op0qdukegrdumyefz4icxk0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move alpha barrier.h stuff to tools/arch/alpha/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+8
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vs2plxuph0ne3zcupijgjy9z@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move sparc barrier.h stuff to tools/arch/sparc/include/asm/barrier.hArnaldo Carvalho de Melo3-0/+56
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-f0d04b9x63grt30nahpw9ei0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move sh barrier.h stuff to tools/arch/sh/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+32
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-6xqb97k782wqp1r3v6jqayki@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move s390 barrier.h stuff to tools/arch/s390/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+30
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-zv4x77074resrkl4ayzf5e7d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move powerpc barrier.h stuff to ↵Arnaldo Carvalho de Melo1-0/+29
tools/arch/powerpc/include/asm/barrier.h We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-pk6f5x9vh8k2ebzhh9uj5wo2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-05-08perf tools: Move x86 barrier.h stuff to tools/arch/x86/include/asm/barrier.hArnaldo Carvalho de Melo1-0/+28
We will need it for atomic.h, so move it from the ad-hoc tools/perf/ place to a tools/ subset of the kernel arch/ hierarchy. Other aches will follow, each in a cset. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vy6bqmsvm6puibpay2cy4wid@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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