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2022-09-16libbpf: Fix crash if SEC("freplace") programs don't have attach_prog_fd setAndrii Nakryiko
Fix SIGSEGV caused by libbpf trying to find attach type in vmlinux BTF for freplace programs. It's wrong to search in vmlinux BTF and libbpf doesn't even mark vmlinux BTF as required for freplace programs. So trying to search anything in obj->vmlinux_btf might cause NULL dereference if nothing else in BPF object requires vmlinux BTF. Instead, error out if freplace (EXT) program doesn't specify attach_prog_fd during at the load time. Fixes: 91abb4a6d79d ("libbpf: Support attachment of BPF tracing programs to kernel modules") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220909193053.577111-3-andrii@kernel.org
2022-09-16selftests/bpf: Fix test_verif_scale{1,3} SEC() annotationsAndrii Nakryiko
Use proper SEC("tc") for test_verif_scale{1,3} programs. It's not a problem for selftests right now because we manually set type programmatically, but not having correct SEC() definitions makes it harded to generically load BPF object files. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220909193053.577111-2-andrii@kernel.org
2022-09-16ftrace: Add HAVE_DYNAMIC_FTRACE_NO_PATCHABLEPeter Zijlstra (Intel)
x86 will shortly start using -fpatchable-function-entry for purposes other than ftrace, make sure the __patchable_function_entry section isn't merged in the mcount_loc section. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220903131154.420467-2-jolsa@kernel.org
2022-09-16net: Add tests for bonding and team address list managementBenjamin Poirier
Test that the bonding and team drivers clean up an underlying device's address lists (dev->uc, dev->mc) when the aggregated device is deleted. Test addition and removal of the LACPDU multicast address on underlying devices by the bonding driver. v2: * add lag_lib.sh to TEST_FILES v3: * extend bond_listen_lacpdu_multicast test to init_state up and down cases * remove some superfluous shell syntax and 'set dev ... up' commands Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add tunnel_key action deleting test caseZhengchao Shao
Test 3671: Delete tunnel_key set action with valid index Test 8597: Delete tunnel_key set action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add sample action deleting test caseZhengchao Shao
Test 3872: Delete sample action with valid index Test a394: Delete sample action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add nat action deleting test caseZhengchao Shao
Test b811: Delete nat action with valid index Test a521: Delete nat action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add ife action deleting test caseZhengchao Shao
Test a972: Delete ife encode action with valid index Test 1272: Delete ife encode action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add connmark action deleting test caseZhengchao Shao
Test 6571: Delete connmark action with valid index Test 3426: Delete connmark action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for xt actionZhengchao Shao
Test 2029: Add xt action with log-prefix Test 3562: Replace xt action log-prefix Test 8291: Delete xt action with valid index Test 5169: Delete xt action with invalid index Test 7284: List xt actions Test 5010: Flush xt actions Test 8437: Add xt action with duplicate index Test 2837: Add xt action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for gate actionZhengchao Shao
Test 5153: Add gate action with priority and sched-entry Test 7189: Add gate action with base-time Test a721: Add gate action with cycle-time Test c029: Add gate action with cycle-time-ext Test 3719: Replace gate base-time action Test d821: Delete gate action with valid index Test 3128: Delete gate action with invalid index Test 7837: List gate actions Test 9273: Flush gate actions Test c829: Add gate action with duplicate index Test 3043: Add gate action with invalid index Test 2930: Add gate action with cookie Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for ctinfo actionZhengchao Shao
Test c826: Add ctinfo action with default setting Test 0286: Add ctinfo action with dscp Test 4938: Add ctinfo action with valid cpmark and zone Test 7593: Add ctinfo action with drop control Test 2961: Replace ctinfo action zone and action control Test e567: Delete ctinfo action with valid index Test 6a91: Delete ctinfo action with invalid index Test 5232: List ctinfo actions Test 7702: Flush ctinfo actions Test 3201: Add ctinfo action with duplicate index Test 8295: Add ctinfo action with invalid index Test 3964: Replace ctinfo action with invalid goto_chain control Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16kselftest/arm64: Add hwcap test for RNGMark Brown
Validate the RNG hwcap and make sure we don't generate a SIGILL reading RNDR when it is reported. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220913141101.151400-4-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-16kselftest/arm64: Add SVE 2 to the tested hwcapsMark Brown
Include SVE 2 and the various subfeatures it adds in the set of hwcaps we check for. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220913141101.151400-3-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-16kselftest/arm64: Add missing newline in hwcap outputMark Brown
Clean up the output of the test by adding a missing newline, the fix had been done locally but didn't make it into the applied version. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220913141101.151400-2-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2022-09-15tools/power/x86/intel-speed-select: Release v1.13Srinivas Pandruvada
Update version number. This version includes fixes for: - fix build failure when using gcc options -Wl,--as-needed - Fix warning for perf_cap.cpu may be uninitialized - Fix off by one check for MAX_DIE_PER_PACKAGE - Fix issue with use of get_physical_die_id instead of get_physical_die_id Optimizations: - Removed unused interfaces and functions - Better handle package, die, cpu combination by defining a struct and set at one place instead at each user level. New functional change: - Warn if turbo is disabled and SST turbo-freq feature is requested Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Optimize CPU initializationZhang Rui
Optimize CPU initialization. Do cpu related initialization in one function, including setting the cpu present_cpumask, target_cpumask, and cpu_map and core_count arrays. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Utilize cpu_map to get physical idZhang Rui
cpu_map already has the cpu package id, die id information. Thus there is no need to re-evaluating sysfs attributes or stored data file to get the package id and die id of a given CPU each time. In order to unitlize this, cpu_map needs to be created unconditionally. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Remove unused struct clos_config fieldsZhang Rui
pkg_id/die_id can be retrieved from struct isst_id, remove the redundant clos_config->pkg_id/die_id fields. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Enforce isst_id valueZhang Rui
Enforce the pkg/die value in struct isst_id are either -1 or a valid value. This helps avoid inconsistent or redundant checks. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Do not export get_physical_idZhang Rui
Now, all the get_physical_pkg/die/core_id() users are inside isst-config.c, so no need to export these APIs. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Introduce is_cpu_in_power_domain helperZhang Rui
struct isst_id contains cpu, package and die info, and it can represent a specific SST power domain. Introduce is_cpu_in_power_domain() helper to identify if a cpu is in a specified power_domain. And cleanup the code to use the new helper. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Cleanup get_physical_id usageZhang Rui
struct isst_id already contains package and die id information, thus there is no need to get the package and die id information, when struct isst_id is already available. Remove unneeded get_physical_package_id/get_physical_die_id usage. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Convert more function to use isst_idZhang Rui
With pkg and die info added into struct isst_id, more functions can be converted to use struct isst_id as parameter. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Add pkg and die in isst_idZhang Rui
Code uses pkg_id and die_id to refer to a specific power domain. The pkg/die information is already settled at start time. Adding package id and die id information into struct isst_id so that code does not need to retrieve them at runtime. More code cleanups can be done with the package/die info available. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Introduce struct isst_idZhang Rui
SST control is power-domain based rather than cpu based, on all the systems including Sapphire Rapids and ealier. SST core APIs uses cpu id as parameter, and use the underlying pkg_id and die_id information to find a power domain, this is not straight forward and introduces obscure logics in the code. Introduce struct isst_id to represent a SST Power Domain. All core APIs are converted to use struct isst_id as parameter instead of using cpu id. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Remove unused core_mask arrayZhang Rui
Remove unused core_mask array. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Remove dead codeZhang Rui
Remove dead code. Not functional change in this patch Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15tools/power/x86/intel-speed-select: Fix cpu count for TDP level displayZhang Rui
In the function isst_ctdp_display_information(), call to the function get_cpu_count() is using get_physical_die_id() instead of get_physical_package_id(). This will result in wrong display of CPU count in that level. Signed-off-by: Zhang Rui <rui.zhang@intel.com> [ Srinivas Pandruvada: fixed subject and change log ] Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2022-09-15objtool,x86: Teach decode about LOOP* instructionsPeter Zijlstra
When 'discussing' control flow Masami mentioned the LOOP* instructions and I realized objtool doesn't decode them properly. As it turns out, these instructions are somewhat inefficient and as such unlikely to be emitted by the compiler (a few vmlinux.o checks can't find a single one) so this isn't critical, but still, best to decode them properly. Reported-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/Yxhd4EMKyoFoH9y4@hirez.programming.kicks-ass.net
2022-09-15selftests: mptcp: move prefix tests of addr_nr_ns2 togetherGeliang Tang
Move the fullmesh prefix test of addr_nr_ns2 together with its other prefix tests. Signed-off-by: Geliang Tang <geliang.tang@suse.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-14selftests/landlock: Fix out-of-tree buildsMickaël Salaün
These changes simplify the Makefile and handle these 5 ways to build Landlock tests: - make -C tools/testing/selftests/landlock - make -C tools/testing/selftests TARGETS=landlock gen_tar - make TARGETS=landlock kselftest-gen_tar - make TARGETS=landlock O=build kselftest-gen_tar - make -C /tmp/linux TARGETS=landlock O=/tmp/build kselftest-gen_tar This also makes $(KHDR_INCLUDES) available to other test collections when building in their directory. Fixes: f1227dc7d041 ("selftests/landlock: fix broken include of linux/landlock.h") Fixes: 3bb267a36185 ("selftests: drop khdr make target") Cc: Anders Roxell <anders.roxell@linaro.org> Cc: Guillaume Tucker <guillaume.tucker@collabora.com> Cc: Mark Brown <broonie@kernel.org> Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20220909103402.1501802-1-mic@digikod.net
2022-09-14KVM: selftests: Add test for AArch32 ID registersOliver Upton
Add a test to assert that KVM handles the AArch64 views of the AArch32 ID registers as RAZ/WI (writable only from userspace). For registers that were already hidden or unallocated, expect RAZ + invariant behavior. Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220913094441.3957645-8-oliver.upton@linux.dev
2022-09-13Revert "selftests/timens: add a test for vfork+exit"Andrei Vagin
The next patch reverts the code that this test verified. This reverts commit 6342140db6609a0c7d34f68c52b2947468e0e630. Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220913102551.1121611-2-avagin@google.com
2022-09-13tools/include/uapi: Fix <asm/errno.h> for parisc and xtensaBen Hutchings
tools/include/uapi/asm/errno.h currently attempts to include non-existent arch-specific errno.h header for xtensa. Remove this case so that <asm-generic/errno.h> is used instead, and add the missing arch-specific header for parisc. References: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.8.3-1%7Eexp1&stamp=1598340829&raw=1 Signed-off-by: Ben Hutchings <benh@debian.org> Signed-off-by: Salvatore Bonaccorso <carnil@debian.org> Cc: <stable@vger.kernel.org> # 5.10+ Signed-off-by: Helge Deller <deller@gmx.de>
2022-09-12Merge tag 'hyperv-fixes-signed-20220912' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv fixes from Wei Liu: - Fix an error handling issue in DRM driver (Christophe JAILLET) - Fix some issues in framebuffer driver (Vitaly Kuznetsov) - Two typo fixes (Jason Wang, Shaomin Deng) - Drop unnecessary casting in kvp tool (Zhou Jie) * tag 'hyperv-fixes-signed-20220912' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Drivers: hv: Never allocate anything besides framebuffer from framebuffer memory region Drivers: hv: Always reserve framebuffer region for Gen1 VMs PCI: Move PCI_VENDOR_ID_MICROSOFT/PCI_DEVICE_ID_HYPERV_VIDEO definitions to pci_ids.h tools: hv: kvp: remove unnecessary (void*) conversions Drivers: hv: remove duplicate word in a comment tools: hv: Remove an extraneous "the" drm/hyperv: Fix an error handling path in hyperv_vmbus_probe()
2022-09-11proc: save LOC in vsyscall testBrian Foster
Do one fork in vsyscall detection code and let SIGSEGV handler exit and carry information to the parent saving LOC. [adobriyan@gmail.com: redo original patch, delete unnecessary variables, minimise code changes] Link: https://lkml.kernel.org/r/YvoWzAn5dlhF75xa@localhost.localdomain Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Tested-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftest: vm: remove deleted local_config.* from .gitignoreTarun Sahu
Commit d2d6cba5d6623 ("selftest: vm: remove orphaned references to local_config.{h,mk}") took care of removing orphaned references. This commit removes local_config from .gitignore. Parent patch commit 69007f156ba ("Kselftests: remove support of libhugetlbfs from kselftests") Link: https://lkml.kernel.org/r/20220901092315.33619-1-tsahu@linux.ibm.com Signed-off-by: Tarun Sahu <tsahu@linux.ibm.com> Reviewed-by: Axel Rasmussen <axelrasmussen@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11Kselftests: remove support of libhugetlbfs from kselftestsTarun Sahu
libhugetlbfs, the user side utitlity to work with hugepages, does not have any active support. There are only 2 selftests which are part of in vm/hmm_test.c that depends on libhugetlbfs. This patch modifies the tests so that they will not require libhugetlb library. [axelrasmussen@google.com: : remove orphaned references to local_config.{h,mk}] Link: https://lkml.kernel.org/r/20220831211526.2743216-1-axelrasmussen@google.com Link: https://lkml.kernel.org/r/20220801070231.13831-1-tsahu@linux.ibm.com Signed-off-by: Tarun Sahu <tsahu@linux.ibm.com> Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Tested-by: Zach O'Keefe <zokeefe@google.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Shivaprasad G Bhat <sbhat@linux.ibm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Vaibhav Jain <vaibhav@linux.ibm.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11tools/vm/page_owner_sort: fix -f optionYixuan Cao
The -f option is to filter out the information of blocks whose memory has not been released, I noticed some blocks should not be filtered out. Commit 9cc7e96aa846 ("mm/page_owner: record timestamp and pid") records the allocation timestamp (ts_nsec) of all pages. Commit 866b48526217 ("mm/page_owner: record the timestamp of all pages during free") records the free timestamp (free_ts_nsec) of all pages. When the page is allocated for the first time, the initial value of free_ts_nsec is 0, and the corresponding time will be obtained when the page is released. But during reallocation the free_ts_nsec will not reset to 0 again. In particular, when page migration occurs, these two timestamps will be the same. Now page_owner_sort removes all text blocks whose free_ts_nsec is not 0 when using -f option. However, this way can only select pages allocated for the first time. If a freed page is reallocated, free_ts_nsec will be less than ts_nsec; if page migration occurs, the two timestamps will be equal. These cases should be considered as pages are not released. So I fix the function is_need() to keep text blocks that meet the above two conditions when using -f option. Link: https://lkml.kernel.org/r/20220812155515.30846-1-caoyixuan2019@email.szu.edu.cn Signed-off-by: Yixuan Cao <caoyixuan2019@email.szu.edu.cn> Cc: Chongxi Zhao <zhaochongxi2019@email.szu.edu.cn> Cc: Jiajian Ye <yejiajian2018@email.szu.edu.cn> Cc: Yuhong Feng <yuhongf@szu.edu.cn> Cc: Liam Mark <lmark@codeaurora.org> Cc: Georgi Djakov <georgi.djakov@linaro.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests: vm: add /dev/userfaultfd test cases to run_vmtests.shAxel Rasmussen
This new mode was recently added to the userfaultfd selftest. We want to exercise both userfaultfd(2) as well as /dev/userfaultfd, so add both test cases to the script. Link: https://lkml.kernel.org/r/20220808175614.3885028-6-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Peter Xu <peterx@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dmitry V. Levin <ldv@altlinux.org> Cc: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nadav Amit <namit@vmware.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zhang Yi <yi.zhang@huawei.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11userfaultfd: selftests: modify selftest to use /dev/userfaultfdAxel Rasmussen
We clearly want to ensure both userfaultfd(2) and /dev/userfaultfd keep working into the future, so just run the test twice, using each interface. Instead of always testing both userfaultfd(2) and /dev/userfaultfd, let the user choose which to test. As with other test features, change the behavior based on a new command line flag. Introduce the idea of "test mods", which are generic (not specific to a test type) modifications to the behavior of the test. This is sort of borrowed from this RFC patch series [1], but simplified a bit. The benefit is, in "typical" configurations this test is somewhat slow (say, 30sec or something). Testing both clearly doubles it, so it may not always be desirable, as users are likely to use one or the other, but never both, in the "real world". [1]: https://patchwork.kernel.org/project/linux-mm/patch/20201129004548.1619714-14-namit@vmware.com/ [axelrasmussen@google.com: modify selftest to exit with KSFT_SKIP *only* when features are unsupported, per Mike] Link: https://lkml.kernel.org/r/20220819205201.658693-4-axelrasmussen@google.com Link: https://lkml.kernel.org/r/20220808175614.3885028-4-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dmitry V. Levin <ldv@altlinux.org> Cc: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Shuah Khan <skhan@linuxfoundation.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zhang Yi <yi.zhang@huawei.com> Cc: Mike Rapoport <rppt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests: vm: add hugetlb_shared userfaultfd test to run_vmtests.shAxel Rasmussen
Patch series "userfaultfd: add /dev/userfaultfd for fine grained access control", v7. Why not ...? ============ - Why not /proc/[pid]/userfaultfd? Two main points (additional discussion [1]): - /proc/[pid]/* files are all owned by the user/group of the process, and they don't really support chmod/chown. So, without extending procfs it doesn't solve the problem this series is trying to solve. - The main argument *for* this was to support creating UFFDs for remote processes. But, that use case clearly calls for CAP_SYS_PTRACE, so to support this we could just use the UFFD syscall as-is. - Why not use a syscall? Access to syscalls is generally controlled by capabilities. We don't have a capability which is used for userfaultfd access without also granting more / other permissions as well, and adding a new capability was rejected [2]. - It's possible a LSM could be used to control access instead, but I have some concerns. I don't think this approach would be as easy to use, particularly if we were to try to solve this with something heavyweight like SELinux. Maybe we could pursue adding a new LSM specifically for this user case, but it may be too narrow of a case to justify that. [1]: https://patchwork.kernel.org/project/linux-mm/cover/20220719195628.3415852-1-axelrasmussen@google.com/ [2]: https://lore.kernel.org/lkml/686276b9-4530-2045-6bd8-170e5943abe4@schaufler-ca.com/T/ This patch (of 5): This not being included was just a simple oversight. There are certain features (like minor fault support) which are only enabled on shared mappings, so without including hugetlb_shared we actually lose a significant amount of test coverage. Link: https://lkml.kernel.org/r/20220808175614.3885028-1-axelrasmussen@google.com Link: https://lkml.kernel.org/r/20220808175614.3885028-2-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dmitry V. Levin <ldv@altlinux.org> Cc: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Cc: Hugh Dickins <hughd@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nadav Amit <namit@vmware.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zhang Yi <yi.zhang@huawei.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests/vm: add selftest to verify multi THP collapseZach O'Keefe
Add support to allocate and verify collapse of multiple hugepage-sized regions into multiple THPs. Add "nr" argument to check_huge() that instructs check_huge() to check for exactly "nr_hpages" THPs. This has the added benefit of now being able to check for exactly 0 THPs, and so callsites that previously checked the negation of exactly 1 THP are now more correct. ->collapse struct collapse_context hook has been expanded with a "nr_hpages" argument to collapse "nr_hpages" hugepages. The collapse_full() test has been repurposed to collapse 4 THPs at once. It is expected more tests will want to test multi THP collapse (e.g. file/shmem). This is of particular benefit to madvise collapse context given that it may do many THP collapses during a single syscall. Link: https://lkml.kernel.org/r/20220706235936.2197195-19-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests/vm: add selftest to verify recollapse of THPsZach O'Keefe
Add selftest specific to madvise collapse context that tests MADV_COLLAPSE is "successful" if a hugepage-aligned/sized region is already pmd-mapped. This test also verifies that MADV_COLLAPSE can collapse memory into THPs even in "madvise" THP mode and the memory isn't marked VM_HUGEPAGE. Link: https://lkml.kernel.org/r/20220706235936.2197195-18-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests/vm: add MADV_COLLAPSE collapse context to selftestsZach O'Keefe
Add madvise collapse context to hugepage collapse selftests. This context is tested with /sys/kernel/mm/transparent_hugepage/enabled set to "never" in order to avoid unwanted interaction with khugepaged during testing. Also, refactor updates to sysfs THP settings using a stack so that the THP settings from nested callers can be restored. Link: https://lkml.kernel.org/r/20220706235936.2197195-17-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests/vm: dedup hugepage allocation logicZach O'Keefe
The code p = alloc_mapping(); printf("Allocate huge page..."); madvise(p, hpage_pmd_size, MADV_HUGEPAGE); fill_memory(p, 0, hpage_pmd_size); if (check_huge(p)) success("OK"); else fail("Fail"); Is repeated many times in different tests. Add a helper, alloc_hpage() to handle this. Link: https://lkml.kernel.org/r/20220706235936.2197195-16-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11selftests/vm: modularize collapse selftestsZach O'Keefe
Modularize the collapse action of khugepaged collapse selftests by introducing a struct collapse_context which specifies how to collapse a given memory range and the expected semantics of the collapse. This can be reused later to test other collapse contexts. Additionally, all tests have logic that checks if a collapse occurred via reading /proc/self/smaps, and report if this is different than expected. Move this logic into the per-context ->collapse() hook instead of repeating it in every test. Link: https://lkml.kernel.org/r/20220706235936.2197195-15-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11mm/madvise: introduce MADV_COLLAPSE sync hugepage collapseZach O'Keefe
This idea was introduced by David Rientjes[1]. Introduce a new madvise mode, MADV_COLLAPSE, that allows users to request a synchronous collapse of memory at their own expense. The benefits of this approach are: * CPU is charged to the process that wants to spend the cycles for the THP * Avoid unpredictable timing of khugepaged collapse Semantics This call is independent of the system-wide THP sysfs settings, but will fail for memory marked VM_NOHUGEPAGE. If the ranges provided span multiple VMAs, the semantics of the collapse over each VMA is independent from the others. This implies a hugepage cannot cross a VMA boundary. If collapse of a given hugepage-aligned/sized region fails, the operation may continue to attempt collapsing the remainder of memory specified. The memory ranges provided must be page-aligned, but are not required to be hugepage-aligned. If the memory ranges are not hugepage-aligned, the start/end of the range will be clamped to the first/last hugepage-aligned address covered by said range. The memory ranges must span at least one hugepage-sized region. All non-resident pages covered by the range will first be swapped/faulted-in, before being internally copied onto a freshly allocated hugepage. Unmapped pages will have their data directly initialized to 0 in the new hugepage. However, for every eligible hugepage aligned/sized region to-be collapsed, at least one page must currently be backed by memory (a PMD covering the address range must already exist). Allocation for the new hugepage may enter direct reclaim and/or compaction, regardless of VMA flags. When the system has multiple NUMA nodes, the hugepage will be allocated from the node providing the most native pages. This operation operates on the current state of the specified process and makes no persistent changes or guarantees on how pages will be mapped, constructed, or faulted in the future Return Value If all hugepage-sized/aligned regions covered by the provided range were either successfully collapsed, or were already PMD-mapped THPs, this operation will be deemed successful. On success, process_madvise(2) returns the number of bytes advised, and madvise(2) returns 0. Else, -1 is returned and errno is set to indicate the error for the most-recently attempted hugepage collapse. Note that many failures might have occurred, since the operation may continue to collapse in the event a single hugepage-sized/aligned region fails. ENOMEM Memory allocation failed or VMA not found EBUSY Memcg charging failed EAGAIN Required resource temporarily unavailable. Try again might succeed. EINVAL Other error: No PMD found, subpage doesn't have Present bit set, "Special" page no backed by struct page, VMA incorrectly sized, address not page-aligned, ... Most notable here is ENOMEM and EBUSY (new to madvise) which are intended to provide the caller with actionable feedback so they may take an appropriate fallback measure. Use Cases An immediate user of this new functionality are malloc() implementations that manage memory in hugepage-sized chunks, but sometimes subrelease memory back to the system in native-sized chunks via MADV_DONTNEED; zapping the pmd. Later, when the memory is hot, the implementation could madvise(MADV_COLLAPSE) to re-back the memory by THPs to regain hugepage coverage and dTLB performance. TCMalloc is such an implementation that could benefit from this[2]. Only privately-mapped anon memory is supported for now, but additional support for file, shmem, and HugeTLB high-granularity mappings[2] is expected. File and tmpfs/shmem support would permit: * Backing executable text by THPs. Current support provided by CONFIG_READ_ONLY_THP_FOR_FS may take a long time on a large system which might impair services from serving at their full rated load after (re)starting. Tricks like mremap(2)'ing text onto anonymous memory to immediately realize iTLB performance prevents page sharing and demand paging, both of which increase steady state memory footprint. With MADV_COLLAPSE, we get the best of both worlds: Peak upfront performance and lower RAM footprints. * Backing guest memory by hugapages after the memory contents have been migrated in native-page-sized chunks to a new host, in a userfaultfd-based live-migration stack. [1] https://lore.kernel.org/linux-mm/d098c392-273a-36a4-1a29-59731cdf5d3d@google.com/ [2] https://github.com/google/tcmalloc/tree/master/tcmalloc [jrdr.linux@gmail.com: avoid possible memory leak in failure path] Link: https://lkml.kernel.org/r/20220713024109.62810-1-jrdr.linux@gmail.com [zokeefe@google.com add missing kfree() to madvise_collapse()] Link: https://lore.kernel.org/linux-mm/20220713024109.62810-1-jrdr.linux@gmail.com/ Link: https://lkml.kernel.org/r/20220713161851.1879439-1-zokeefe@google.com [zokeefe@google.com: delay computation of hpage boundaries until use]] Link: https://lkml.kernel.org/r/20220720140603.1958773-4-zokeefe@google.com Link: https://lkml.kernel.org/r/20220706235936.2197195-10-zokeefe@google.com Signed-off-by: Zach O'Keefe <zokeefe@google.com> Signed-off-by: "Souptick Joarder (HPE)" <jrdr.linux@gmail.com> Suggested-by: David Rientjes <rientjes@google.com> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Hildenbrand <david@redhat.com> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com> Cc: SeongJae Park <sj@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-11tools: fix compilation after gfp_types.h splitMatthew Wilcox (Oracle)
When gfp_types.h was split from gfp.h, it broke the radix test suite. Fix the test suite by using gfp_types.h in the tools gfp.h header. Link: https://lkml.kernel.org/r/20220902191923.1735933-1-willy@infradead.org Fixes: cb5a065b4ea9 (headers/deps: mm: Split <linux/gfp_types.h> out of <linux/gfp.h>) Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reported-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Yury Norov <yury.norov@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
generated by cgit (git 2.34.1) at 2025-09-27 02:06:26 +0000