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[PATCH AUTOSEL 5.15 24/24] kselftest/vm: fix tests build with old libc

by Sasha Levin

From: Chengming Zhou <zhouchengming(a)bytedance.com> [ Upstream commit b773827e361952b3f53ac6fa4c4e39ccd632102e ] The error message when I build vm tests on debian10 (GLIBC 2.28): userfaultfd.c: In function `userfaultfd_pagemap_test': userfaultfd.c:1393:37: error: `MADV_PAGEOUT' undeclared (first use in this function); did you mean `MADV_RANDOM'? if (madvise(area_dst, test_pgsize, MADV_PAGEOUT)) ^~~~~~~~~~~~ MADV_RANDOM This patch includes these newer definitions from UAPI linux/mman.h, is useful to fix tests build on systems without these definitions in glibc sys/mman.h. Link: https://lkml.kernel.org/r/20220227055330.43087-2-zhouchengming@bytedance.com Signed-off-by: Chengming Zhou <zhouchengming(a)bytedance.com> Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/vm/userfaultfd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 81690f1737c8..138b011c667e 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -46,6 +46,7 @@ #include <signal.h> #include <poll.h> #include <string.h> +#include <linux/mman.h> #include <sys/mman.h> #include <sys/syscall.h> #include <sys/ioctl.h> -- 2.34.1

3 years, 4 months

1
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[PATCH AUTOSEL 5.16 27/27] kselftest/vm: fix tests build with old libc

by Sasha Levin

From: Chengming Zhou <zhouchengming(a)bytedance.com> [ Upstream commit b773827e361952b3f53ac6fa4c4e39ccd632102e ] The error message when I build vm tests on debian10 (GLIBC 2.28): userfaultfd.c: In function `userfaultfd_pagemap_test': userfaultfd.c:1393:37: error: `MADV_PAGEOUT' undeclared (first use in this function); did you mean `MADV_RANDOM'? if (madvise(area_dst, test_pgsize, MADV_PAGEOUT)) ^~~~~~~~~~~~ MADV_RANDOM This patch includes these newer definitions from UAPI linux/mman.h, is useful to fix tests build on systems without these definitions in glibc sys/mman.h. Link: https://lkml.kernel.org/r/20220227055330.43087-2-zhouchengming@bytedance.com Signed-off-by: Chengming Zhou <zhouchengming(a)bytedance.com> Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/vm/userfaultfd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 9354a5e0321c..3f7f5bd4e4c0 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -46,6 +46,7 @@ #include <signal.h> #include <poll.h> #include <string.h> +#include <linux/mman.h> #include <sys/mman.h> #include <sys/syscall.h> #include <sys/ioctl.h> -- 2.34.1

3 years, 4 months

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[PATCH v3 0/6] KVM: my debug patch queue

by Maxim Levitsky

Hi! I would like to publish two debug features which were needed for other stuff I work on. One is the reworked lx-symbols script which now actually works on at least gdb 9.1 (gdb 9.2 was reported to fail to load the debug symbols from the kernel for some reason, not related to this patch) and upstream qemu. The other feature is the ability to trap all guest exceptions (on SVM for now) and see them in kvmtrace prior to potential merge to double/triple fault. This can be very useful and I already had to manually patch KVM a few times for this. I will, once time permits, implement this feature on Intel as well. V2: * Some more refactoring and workarounds for lx-symbols script * added KVM_GUESTDBG_BLOCKIRQ flag to enable 'block interrupts on single step' together with KVM_CAP_SET_GUEST_DEBUG2 capability to indicate which guest debug flags are supported. This is a replacement for unconditional block of interrupts on single step that was done in previous version of this patch set. Patches to qemu to use that feature will be sent soon. * Reworked the the 'intercept all exceptions for debug' feature according to the review feedback: - renamed the parameter that enables the feature and moved it to common kvm module. (only SVM part is currently implemented though) - disable the feature for SEV guests as was suggested during the review - made the vmexit table const again, as was suggested in the review as well. V3: * Modified a selftest to cover the KVM_GUESTDBG_BLOCKIRQ * Rebased on kvm/queue Best regards, Maxim Levitsky Maxim Levitsky (6): KVM: SVM: split svm_handle_invalid_exit KVM: x86: add force_intercept_exceptions_mask KVM: SVM: implement force_intercept_exceptions_mask scripts/gdb: rework lx-symbols gdb script KVM: x86: implement KVM_GUESTDBG_BLOCKIRQ KVM: selftests: test KVM_GUESTDBG_BLOCKIRQ Documentation/virt/kvm/api.rst | 1 + arch/x86/include/asm/kvm_host.h | 5 +- arch/x86/include/uapi/asm/kvm.h | 1 + arch/x86/kvm/svm/svm.c | 87 +++++++- arch/x86/kvm/svm/svm.h | 6 +- arch/x86/kvm/x86.c | 12 +- arch/x86/kvm/x86.h | 2 + kernel/module.c | 8 +- scripts/gdb/linux/symbols.py | 203 ++++++++++++------ .../testing/selftests/kvm/x86_64/debug_regs.c | 24 ++- 10 files changed, 266 insertions(+), 83 deletions(-) -- 2.26.3

3 years, 4 months

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[PATCH RESEND v2 0/5] memop selftest for storage key checking

by Janis Schoetterl-Glausch

Refactor memop selftest and add tests. Add storage key tests, both for success as well as failure cases. Similarly, test both vcpu and vm ioctls. v1 -> v2 * restructure commits * get rid of test_* wrapper functions that hid vm.vm * minor changes v0 -> v2 * complete rewrite v1: https://lore.kernel.org/kvm/20220217145336.1794778-1-scgl@linux.ibm.com/ v0: https://lore.kernel.org/kvm/20220211182215.2730017-11-scgl@linux.ibm.com/ Janis Schoetterl-Glausch (5): KVM: s390: selftests: Split memop tests KVM: s390: selftests: Add macro as abstraction for MEM_OP KVM: s390: selftests: Add named stages for memop test KVM: s390: selftests: Add more copy memop tests KVM: s390: selftests: Add error memop tests tools/testing/selftests/kvm/s390x/memop.c | 735 ++++++++++++++++++---- 1 file changed, 617 insertions(+), 118 deletions(-) base-commit: ee6a569d3bf64c9676eee3eecb861fb01cc11311 -- 2.32.0

3 years, 4 months

2
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[PATCH] net: netdevsim: fix byte order on ipsec debugfs file

by Kleber Sacilotto de Souza

When adding a new xfrm state, the data provided via struct xfrm_state is stored in network byte order. This needs to be taken into consideration when exporting the SAs data to userspace via debugfs, otherwise the content will depend on the system endianness. Fix this by converting all multi-byte fields from network to host order. Also fix the selftest script which was expecting the data as exported by a little-endian system, which was inverted. Fixes: 7699353da875 ("netdevsim: add ipsec offload testing") Fixes: 2766a11161cc ("selftests: rtnetlink: add ipsec offload API test") Signed-off-by: Kleber Sacilotto de Souza <kleber.souza(a)canonical.com> --- drivers/net/netdevsim/ipsec.c | 13 +++++++------ tools/testing/selftests/net/rtnetlink.sh | 10 +++++----- 2 files changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/net/netdevsim/ipsec.c b/drivers/net/netdevsim/ipsec.c index b80ed2ffd45e..03fb8b56edc4 100644 --- a/drivers/net/netdevsim/ipsec.c +++ b/drivers/net/netdevsim/ipsec.c @@ -41,16 +41,17 @@ static ssize_t nsim_dbg_netdev_ops_read(struct file *filp, p += scnprintf(p, bufsize - (p - buf), "sa[%i] %cx ipaddr=0x%08x %08x %08x %08x\n", - i, (sap->rx ? 'r' : 't'), sap->ipaddr[0], - sap->ipaddr[1], sap->ipaddr[2], sap->ipaddr[3]); + i, (sap->rx ? 'r' : 't'), ntohl(sap->ipaddr[0]), + ntohl(sap->ipaddr[1]), ntohl(sap->ipaddr[2]), + ntohl(sap->ipaddr[3])); p += scnprintf(p, bufsize - (p - buf), "sa[%i] spi=0x%08x proto=0x%x salt=0x%08x crypt=%d\n", - i, be32_to_cpu(sap->xs->id.spi), - sap->xs->id.proto, sap->salt, sap->crypt); + i, ntohl(sap->xs->id.spi), + sap->xs->id.proto, ntohl(sap->salt), sap->crypt); p += scnprintf(p, bufsize - (p - buf), "sa[%i] key=0x%08x %08x %08x %08x\n", - i, sap->key[0], sap->key[1], - sap->key[2], sap->key[3]); + i, ntohl(sap->key[0]), ntohl(sap->key[1]), + ntohl(sap->key[2]), ntohl(sap->key[3])); } len = simple_read_from_buffer(buffer, count, ppos, buf, p - buf); diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index c9ce3dfa42ee..8b1f20947673 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -814,11 +814,11 @@ kci_test_ipsec_offload() diff $sysfsf - << EOF SA count=2 tx=3 sa[0] tx ipaddr=0x00000000 00000000 00000000 00000000 -sa[0] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 -sa[0] key=0x34333231 38373635 32313039 36353433 -sa[1] rx ipaddr=0x00000000 00000000 00000000 037ba8c0 -sa[1] spi=0x00000009 proto=0x32 salt=0x61626364 crypt=1 -sa[1] key=0x34333231 38373635 32313039 36353433 +sa[0] spi=0x00000009 proto=0x32 salt=0x64636261 crypt=1 +sa[0] key=0x31323334 35363738 39303132 33343536 +sa[1] rx ipaddr=0x00000000 00000000 00000000 c0a87b03 +sa[1] spi=0x00000009 proto=0x32 salt=0x64636261 crypt=1 +sa[1] key=0x31323334 35363738 39303132 33343536 EOF if [ $? -ne 0 ] ; then echo "FAIL: ipsec_offload incorrect driver data" -- 2.32.0

3 years, 4 months

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Napływ Klientów ze strony

by "Mikołaj Rudzik"

Dzień dobry, chciałbym poinformować Państwa o możliwości pozyskania nowych zleceń ze strony www. Widzimy zainteresowanie potencjalnych Klientów Państwa firmą, dlatego chętnie pomożemy Państwu dotrzeć z ofertą do większego grona odbiorców poprzez efektywne metody pozycjonowania strony w Google. Czy mógłbym liczyć na kontakt zwrotny? Pozdrawiam Mikołaj Rudzik

3 years, 4 months

1
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[PATCH v2 0/5] memop selftest for storage key checking

by Janis Schoetterl-Glausch

Refactor memop selftest and add tests. Add storage key tests, both for success as well as failure cases. Similarly test both vcpu and vm ioctls. v1 -> v2 * restructure commits * get rid of test_* wrapper functions that hid vm.vm * minor changes v0 -> v2 * complete rewrite v1: https://lore.kernel.org/kvm/20220217145336.1794778-1-scgl@linux.ibm.com/ v0: https://lore.kernel.org/kvm/20220211182215.2730017-11-scgl@linux.ibm.com/ Janis Schoetterl-Glausch (5): KVM: s390: selftests: Split memop tests KVM: s390: selftests: Add macro as abstraction for MEM_OP KVM: s390: selftests: Add named stages for memop test KVM: s390: selftests: Add more copy memop tests KVM: s390: selftests: Add error memop tests tools/testing/selftests/kvm/s390x/memop.c | 734 ++++++++++++++++++---- 1 file changed, 616 insertions(+), 118 deletions(-) base-commit: ee6a569d3bf64c9676eee3eecb861fb01cc11311 -- 2.32.0

3 years, 4 months

3
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[PATCH net] selftests: pmtu.sh: Kill tcpdump processes launched by subshell.

by Guillaume Nault

The cleanup() function takes care of killing processes launched by the test functions. It relies on variables like ${tcpdump_pids} to get the relevant PIDs. But tests are run in their own subshell, so updated *_pids values are invisible to other shells. Therefore cleanup() never sees any process to kill: $ ./tools/testing/selftests/net/pmtu.sh -t pmtu_ipv4_exception TEST: ipv4: PMTU exceptions [ OK ] TEST: ipv4: PMTU exceptions - nexthop objects [ OK ] $ pgrep -af tcpdump 6084 tcpdump -s 0 -i veth_A-R1 -w pmtu_ipv4_exception_veth_A-R1.pcap 6085 tcpdump -s 0 -i veth_R1-A -w pmtu_ipv4_exception_veth_R1-A.pcap 6086 tcpdump -s 0 -i veth_R1-B -w pmtu_ipv4_exception_veth_R1-B.pcap 6087 tcpdump -s 0 -i veth_B-R1 -w pmtu_ipv4_exception_veth_B-R1.pcap 6088 tcpdump -s 0 -i veth_A-R2 -w pmtu_ipv4_exception_veth_A-R2.pcap 6089 tcpdump -s 0 -i veth_R2-A -w pmtu_ipv4_exception_veth_R2-A.pcap 6090 tcpdump -s 0 -i veth_R2-B -w pmtu_ipv4_exception_veth_R2-B.pcap 6091 tcpdump -s 0 -i veth_B-R2 -w pmtu_ipv4_exception_veth_B-R2.pcap 6228 tcpdump -s 0 -i veth_A-R1 -w pmtu_ipv4_exception_veth_A-R1.pcap 6229 tcpdump -s 0 -i veth_R1-A -w pmtu_ipv4_exception_veth_R1-A.pcap 6230 tcpdump -s 0 -i veth_R1-B -w pmtu_ipv4_exception_veth_R1-B.pcap 6231 tcpdump -s 0 -i veth_B-R1 -w pmtu_ipv4_exception_veth_B-R1.pcap 6232 tcpdump -s 0 -i veth_A-R2 -w pmtu_ipv4_exception_veth_A-R2.pcap 6233 tcpdump -s 0 -i veth_R2-A -w pmtu_ipv4_exception_veth_R2-A.pcap 6234 tcpdump -s 0 -i veth_R2-B -w pmtu_ipv4_exception_veth_R2-B.pcap 6235 tcpdump -s 0 -i veth_B-R2 -w pmtu_ipv4_exception_veth_B-R2.pcap Fix this by running cleanup() in the context of the test subshell. Now that each test cleans the environment after completion, there's no need for calling cleanup() again when the next test starts. So let's drop it from the setup() function. This is okay because cleanup() is also called when pmtu.sh starts, so even the first test starts in a clean environment. Note: PAUSE_ON_FAIL is still evaluated before cleanup(), so one can still inspect the test environment upon failure when using -p. Fixes: a92a0a7b8e7c ("selftests: pmtu: Simplify cleanup and namespace names") Signed-off-by: Guillaume Nault <gnault(a)redhat.com> --- tools/testing/selftests/net/pmtu.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index 543ad7513a8e..1db670a01f9b 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -865,7 +865,6 @@ setup_ovs_bridge() { setup() { [ "$(id -u)" -ne 0 ] && echo " need to run as root" && return $ksft_skip - cleanup for arg do eval setup_${arg} || { echo " ${arg} not supported"; return 1; } done @@ -1836,6 +1835,10 @@ run_test() { unset IFS + # Since cleanup() relies on variables modified by this subshell, it + # has to run in this context. + trap cleanup EXIT + if [ "$VERBOSE" = "1" ]; then printf "\n##########################################################################\n\n" fi -- 2.21.3

3 years, 4 months

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[PATCH v9 0/2] Interface to represent PAPR firmware attributes

by Pratik R. Sampat

RFC: https://lkml.org/lkml/2021/6/4/791 PATCH v1: https://lkml.org/lkml/2021/6/16/805 PATCH v2: https://lkml.org/lkml/2021/7/6/138 PATCH v3: https://lkml.org/lkml/2021/7/12/2799 PATCH v4: https://lkml.org/lkml/2021/7/16/532 PATCH v5: https://lkml.org/lkml/2021/7/19/247 PATCH v6: https://lkml.org/lkml/2021/7/20/36 PATCH v7: https://lkml.org/lkml/2021/7/23/26 PATCH v8: https://lkml.org/lkml/2021/9/28/554 Changelog v8-->v9 1. Edited interface documentation to be in line with the current formatting 2. Created a parent abstraction for cleaning up the functions exporting energy scale information. Also commented the need to make a new hcall each time instead of caching objects as energy modes may change dynamically 3. Added a dynamically reallocating buffer for the hcall return attributes in the case of H_PARTIAL and H_P4 4. Added support to discover H_GET_ENERGY_SCALE_INFO feature via the ibm,hypertas-function device tree property 5. Removed versioning check for hcall as the PAPR documents backward compatibility support for this hcall 6. Decoupled allocation and registering for sysfs interfaces for handling faliures gracefully 7. Cleaned up functions, return codes, variable and label naming as per comments Additional comment: Currently the interface is modeled to calling it as papr_platform_attributes.c as to keep it open to adding more attributes in the future. However, if believed that its not necessary then I could rename it to energy_scale_info.c instead and remove the "papr" parent directory from the interface as well. Pratik R. Sampat (2): powerpc/pseries: Interface to represent PAPR firmware attributes selftest/powerpc: Add PAPR sysfs attributes sniff test .../sysfs-firmware-papr-energy-scale-info | 29 ++ arch/powerpc/include/asm/firmware.h | 4 +- arch/powerpc/include/asm/hvcall.h | 3 +- arch/powerpc/kvm/trace_hv.h | 1 + arch/powerpc/platforms/pseries/Makefile | 3 +- arch/powerpc/platforms/pseries/firmware.c | 1 + .../pseries/papr_platform_attributes.c | 361 ++++++++++++++++++ tools/testing/selftests/powerpc/Makefile | 1 + .../powerpc/papr_attributes/.gitignore | 2 + .../powerpc/papr_attributes/Makefile | 7 + .../powerpc/papr_attributes/attr_test.c | 107 ++++++ 11 files changed, 516 insertions(+), 3 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-firmware-papr-energy-scale-info create mode 100644 arch/powerpc/platforms/pseries/papr_platform_attributes.c create mode 100644 tools/testing/selftests/powerpc/papr_attributes/.gitignore create mode 100644 tools/testing/selftests/powerpc/papr_attributes/Makefile create mode 100644 tools/testing/selftests/powerpc/papr_attributes/attr_test.c -- 2.34.1

3 years, 4 months

2
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[RESEND] dma-mapping: benchmark: Extract a common header file for map_benchmark definition

by Tian Tao

kernel/dma/map_benchmark.c and selftests/dma/dma_map_benchmark.c have duplicate map_benchmark definitions, which tends to lead to inconsistent changes to map_benchmark on both sides, extract a common header file to avoid this problem. Signed-off-by: Tian Tao <tiantao6(a)hisilicon.com> Acked-by: Barry Song <song.bao.hua(a)hisilicon.com> Reviewed-by: Shuah Khan <skhan(a)linuxfoundation.org> --- kernel/dma/map_benchmark.c | 24 +------------- kernel/dma/map_benchmark.h | 31 +++++++++++++++++++ .../testing/selftests/dma/dma_map_benchmark.c | 25 +-------------- 3 files changed, 33 insertions(+), 47 deletions(-) create mode 100644 kernel/dma/map_benchmark.h diff --git a/kernel/dma/map_benchmark.c b/kernel/dma/map_benchmark.c index 9b9af1bd6be3..c05f4e242991 100644 --- a/kernel/dma/map_benchmark.c +++ b/kernel/dma/map_benchmark.c @@ -18,29 +18,7 @@ #include <linux/slab.h> #include <linux/timekeeping.h> -#define DMA_MAP_BENCHMARK _IOWR('d', 1, struct map_benchmark) -#define DMA_MAP_MAX_THREADS 1024 -#define DMA_MAP_MAX_SECONDS 300 -#define DMA_MAP_MAX_TRANS_DELAY (10 * NSEC_PER_MSEC) - -#define DMA_MAP_BIDIRECTIONAL 0 -#define DMA_MAP_TO_DEVICE 1 -#define DMA_MAP_FROM_DEVICE 2 - -struct map_benchmark { - __u64 avg_map_100ns; /* average map latency in 100ns */ - __u64 map_stddev; /* standard deviation of map latency */ - __u64 avg_unmap_100ns; /* as above */ - __u64 unmap_stddev; - __u32 threads; /* how many threads will do map/unmap in parallel */ - __u32 seconds; /* how long the test will last */ - __s32 node; /* which numa node this benchmark will run on */ - __u32 dma_bits; /* DMA addressing capability */ - __u32 dma_dir; /* DMA data direction */ - __u32 dma_trans_ns; /* time for DMA transmission in ns */ - __u32 granule; /* how many PAGE_SIZE will do map/unmap once a time */ - __u8 expansion[76]; /* For future use */ -}; +#include "map_benchmark.h" struct map_benchmark_data { struct map_benchmark bparam; diff --git a/kernel/dma/map_benchmark.h b/kernel/dma/map_benchmark.h new file mode 100644 index 000000000000..62674c83bde4 --- /dev/null +++ b/kernel/dma/map_benchmark.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2022 HiSilicon Limited. + */ + +#ifndef _KERNEL_DMA_BENCHMARK_H +#define _KERNEL_DMA_BENCHMARK_H + +#define DMA_MAP_BENCHMARK _IOWR('d', 1, struct map_benchmark) +#define DMA_MAP_MAX_THREADS 1024 +#define DMA_MAP_MAX_SECONDS 300 +#define DMA_MAP_MAX_TRANS_DELAY (10 * NSEC_PER_MSEC) + +#define DMA_MAP_BIDIRECTIONAL 0 +#define DMA_MAP_TO_DEVICE 1 +#define DMA_MAP_FROM_DEVICE 2 + +struct map_benchmark { + __u64 avg_map_100ns; /* average map latency in 100ns */ + __u64 map_stddev; /* standard deviation of map latency */ + __u64 avg_unmap_100ns; /* as above */ + __u64 unmap_stddev; + __u32 threads; /* how many threads will do map/unmap in parallel */ + __u32 seconds; /* how long the test will last */ + __s32 node; /* which numa node this benchmark will run on */ + __u32 dma_bits; /* DMA addressing capability */ + __u32 dma_dir; /* DMA data direction */ + __u32 dma_trans_ns; /* time for DMA transmission in ns */ + __u32 granule; /* how many PAGE_SIZE will do map/unmap once a time */ +}; +#endif /* _KERNEL_DMA_BENCHMARK_H */ diff --git a/tools/testing/selftests/dma/dma_map_benchmark.c b/tools/testing/selftests/dma/dma_map_benchmark.c index 485dff51bad2..33bf073071aa 100644 --- a/tools/testing/selftests/dma/dma_map_benchmark.c +++ b/tools/testing/selftests/dma/dma_map_benchmark.c @@ -11,39 +11,16 @@ #include <sys/ioctl.h> #include <sys/mman.h> #include <linux/types.h> +#include "../../../../kernel/dma/map_benchmark.h" #define NSEC_PER_MSEC 1000000L -#define DMA_MAP_BENCHMARK _IOWR('d', 1, struct map_benchmark) -#define DMA_MAP_MAX_THREADS 1024 -#define DMA_MAP_MAX_SECONDS 300 -#define DMA_MAP_MAX_TRANS_DELAY (10 * NSEC_PER_MSEC) - -#define DMA_MAP_BIDIRECTIONAL 0 -#define DMA_MAP_TO_DEVICE 1 -#define DMA_MAP_FROM_DEVICE 2 - static char *directions[] = { "BIDIRECTIONAL", "TO_DEVICE", "FROM_DEVICE", }; -struct map_benchmark { - __u64 avg_map_100ns; /* average map latency in 100ns */ - __u64 map_stddev; /* standard deviation of map latency */ - __u64 avg_unmap_100ns; /* as above */ - __u64 unmap_stddev; - __u32 threads; /* how many threads will do map/unmap in parallel */ - __u32 seconds; /* how long the test will last */ - __s32 node; /* which numa node this benchmark will run on */ - __u32 dma_bits; /* DMA addressing capability */ - __u32 dma_dir; /* DMA data direction */ - __u32 dma_trans_ns; /* time for DMA transmission in ns */ - __u32 granule; /* how many PAGE_SIZE will do map/unmap once a time */ - __u8 expansion[76]; /* For future use */ -}; - int main(int argc, char **argv) { struct map_benchmark map; -- 2.33.0

3 years, 4 months

2
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