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/kernel/linux/linux-5.10/Documentation/networking/
Dudplite.rst37 IPPROTO need to be changed; senders additionally set the checksum coverage
58 using partial checksum coverage and so emulate UDP mode (full coverage).
60 To make use of the partial checksum coverage facilities requires setting a
61 single socket option, which takes an integer specifying the coverage length:
63 * Sender checksum coverage: UDPLITE_SEND_CSCOV
70 sets the checksum coverage length to 20 bytes (12b data + 8b header).
76 * Receiver checksum coverage: UDPLITE_RECV_CSCOV
79 required to enable traffic with partial checksum coverage. Its function is
81 all packets which have a coverage _less_ than this value. For example, if
83 packets with a minimum coverage of 20 are admitted::
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Ddccp.rst112 partial checksum coverage (RFC 4340, sec. 9.2). The default is that checksums
117 DCCP_SOCKOPT_SEND_CSCOV sets the sender checksum coverage. Values in the
118 range 0..15 are acceptable. The default setting is 0 (full coverage),
119 values between 1..15 indicate partial coverage.
123 of 0 means that all packets with a partial coverage will be discarded.
125 coverage value are also acceptable. The higher the number, the more
126 restrictive this setting (see [RFC 4340, sec. 9.2.1]). Partial coverage
/kernel/linux/linux-5.10/Documentation/dev-tools/
Dkcov.rst1 kcov: code coverage for fuzzing
4 kcov exposes kernel code coverage information in a form suitable for coverage-
7 basis, and thus it can capture precise coverage of a single system call.
9 Note that kcov does not aim to collect as much coverage as possible. It aims
10 to collect more or less stable coverage that is function of syscall inputs.
11 To achieve this goal it does not collect coverage in soft/hard interrupts
38 The following program demonstrates coverage collection from within a test
67 /* A single fd descriptor allows coverage collection on a single
81 /* Enable coverage collection on the current thread. */
84 /* Reset coverage from the tail of the ioctl() call. */
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Dgcov.rst4 gcov profiling kernel support enables the use of GCC's coverage testing
7 To get coverage data for a specific file, change to the kernel build
16 for the entire kernel and provide coverage overviews in HTML format.
26 .. _lcov: http://ltp.sourceforge.net/coverage/lcov.php
37 and to get coverage data for the entire kernel::
87 Global reset file: resets all coverage data to zero when
92 tool. Resets file coverage data to zero when written to.
97 option ``-ftest-coverage``.
105 coverage data for such code by keeping a copy of the data associated
107 Once the module is loaded again, the associated coverage counters are
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/kernel/linux/linux-5.10/arch/arm/probes/kprobes/
Dtest-core.c703 struct coverage_table coverage; variable
736 struct coverage_table *coverage = (struct coverage_table *)args; in coverage_start_fn() local
738 struct coverage_entry *entry = coverage->base + coverage->num_entries; in coverage_start_fn()
740 if (coverage->num_entries == MAX_COVERAGE_ENTRIES - 1) { in coverage_start_fn()
745 ++coverage->num_entries; in coverage_start_fn()
749 entry->nesting = coverage->nesting; in coverage_start_fn()
755 ++coverage->nesting; in coverage_start_fn()
756 ret = table_iter(d->table.table, coverage_start_fn, coverage); in coverage_start_fn()
757 --coverage->nesting; in coverage_start_fn()
766 coverage.base = kmalloc_array(MAX_COVERAGE_ENTRIES, in coverage_start()
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/kernel/linux/linux-5.10/scripts/
DMakefile.kcov2 kcov-flags-$(CONFIG_CC_HAS_SANCOV_TRACE_PC) += -fsanitize-coverage=trace-pc
3 kcov-flags-$(CONFIG_KCOV_ENABLE_COMPARISONS) += -fsanitize-coverage=trace-cmp
/kernel/linux/linux-5.10/tools/perf/util/
Dblock-range.c177 .coverage = entry->coverage, in block_range__create()
215 .coverage = entry->coverage, in block_range__create()
330 return (double)br->coverage / symbol__annotation(sym)->max_coverage; in block_range__coverage()
Dblock-range.h32 u64 coverage; member
/kernel/linux/linux-5.10/drivers/of/
DKconfig11 compile-coverage.
63 can enable it manually to improve device tree unit test coverage.
94 enable it manually to improve device tree unit test coverage.
/kernel/linux/linux-5.10/arch/x86/um/vdso/
DMakefile53 CFLAGS_REMOVE_vdso-note.o = -pg -fprofile-arcs -ftest-coverage
54 CFLAGS_REMOVE_um_vdso.o = -pg -fprofile-arcs -ftest-coverage
/kernel/liteos_a/testsuites/build/
Dlos_test_config.mk40 LITEOS_GCOV_OPTS := -fprofile-arcs -ftest-coverage -Wno-maybe-uninitialized
/kernel/linux/linux-5.10/arch/um/
DMakefile-skas7 GCOV_OPT += -fprofile-arcs -ftest-coverage
DKconfig.debug22 This option allows developers to retrieve coverage data from a UML
/kernel/linux/linux-5.10/drivers/scsi/lpfc/
DMakefile24 ccflags-$(GCOV) := -fprofile-arcs -ftest-coverage
/kernel/linux/linux-5.10/Documentation/features/debug/kcov/
Darch-support.txt4 # description: arch supports kcov for coverage-guided fuzzing
/kernel/linux/linux-5.10/Documentation/features/debug/gcov-profile-all/
Darch-support.txt4 # description: arch supports whole-kernel GCOV code coverage profiling
/kernel/linux/linux-5.10/arch/um/scripts/
DMakefile.rules26 $(patsubst -pg,,$(patsubst -fprofile-arcs -ftest-coverage,,$(1)))
/kernel/linux/linux-5.10/arch/arm/boot/dts/
Ds3c6400.dtsi12 * S3C6400 SoC. As device tree coverage for S3C6400 increases, additional
Ds3c6410.dtsi12 * S3C6410 SoC. As device tree coverage for S3C6410 increases, additional
/kernel/linux/linux-5.10/tools/testing/selftests/arm64/fp/
DREADME61 to maximise test coverage.
96 maximise test coverage.
/kernel/linux/linux-5.10/scripts/gcc-plugins/
DKconfig43 gcc-4.5 on). It is based on the commit "Add fuzzing coverage support"
95 depends on !COMPILE_TEST # do not reduce test coverage
/kernel/linux/linux-5.10/drivers/net/usb/
Dsierra_net.c127 u8 coverage; member
402 if (lsi->coverage == SIERRA_NET_COVERAGE_NONE || in sierra_net_parse_lsi()
403 lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) { in sierra_net_parse_lsi()
404 netdev_err(dev->net, "No coverage, 0x%02x\n", lsi->coverage); in sierra_net_parse_lsi()
/kernel/linux/linux-5.10/kernel/gcov/
DKconfig10 This option enables gcov-based code profiling (e.g. for code coverage
/kernel/linux/linux-5.10/security/
DKconfig.hardening13 such variables, depending on the chosen level of coverage.
46 greatest coverage (since all functions can have their
51 This chooses the level of coverage over classes of potentially
/kernel/linux/linux-5.10/tools/perf/
Dbuiltin-annotate.c111 entry->coverage++; in process_basic_block()
115 notes->max_coverage = max(notes->max_coverage, entry->coverage); in process_basic_block()

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