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Documentation/requirements/

Character Drivers and Misc

c2d4542d5f1741c88dfcb4f68ad7dcbd

DOC-SUBSYS-CHARMISC

Character Drivers and Misc

1 Low-Level Requirements

fd44b777bcd241eaaa427d28e9d01278

Low-Level Requirements

1.1 devmem

897e208488da42eb84e299dade7f6495

devmem

1.1.1 Requirements

61217c39f904471bb9580b9cbbea16b8

Requirements

1.1.1.1 read_mem

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Character Drivers and Misc

read_mem

selftests/devmem:read_at_addr_32bit_ge read_mem FE_1(Test)

selftests/devmem:read_outside_linear_map read_mem FE_2(Test)

selftests/devmem:read_allowed_area read_mem FE_3.2(Test)

selftests/devmem:read_allowed_area_ppos_advance read_mem FE_4(Test)

selftests/devmem:read_restricted_area read_mem FE_3.3, FE_3.3.1, FE_3.2.2(Test)

selftests/devmem:read_secret_area read_mem FE_???

1.1.1.2 write_mem

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Character Drivers and Misc

write_mem

selftests/devmem:write_outside_area write_mem - FE_2(Test)

1.1.1.3 mmap_mem

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12f2a3571b30462c24cd92d073513eba9e91a052a45057073b1c17de2584546f

Character Drivers and Misc

mmap_mem

1.1.1.4 memory_lseek

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17745d554ee1aca155176037541afce34a4c901070a0bdc84d114e8a147a8052

Character Drivers and Misc

memory_lseek

The memory devices use the full 32/64 bits of the offset, and so we cannot check against negative addresses: they are ok. The return value is weird, though, in that case (0).

Also note that seeking relative to the "end of file" isn't supported: it has no meaning, so passing orig equal to SEEK_END returns -EINVAL.

selftests/devmem:seek_seek_set memory_lseek FE_2, FE_2.2(Test)

selftests/devmem:seek_seek_cur memory_lseek FE_2, FE_2.1(Test)

selftests/devmem:seek_seek_other memory_lseek FE_2, FE2.3(Test)

1.1.1.5 open_port

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Character Drivers and Misc

open_port

1.1.1.6 memory_open

46dc914c8b39c0763e1d407cf985e16e68b5c153cdbdae6e03173972db455da0

7e47f36178f4b7e69ecb2d9f1f08c1d126afac6d1bedf260a8021a318f59fc5b

Character Drivers and Misc

memory_open

selftests/devmem:access memory_open FE_1, FE_2, FE_4(Test)

selftests/devmem:open_devnum memory_open FE_3(Test)

1.1.2 Tests

d22df905261145ffaccd62838bcffe1e

Tests

1.1.2.1 memory_open FE_1, FE_2, FE_4

selftests/devmem:access

memory_open FE_1, FE_2, FE_4

Test whether /dev/mem is accessible

46dc914c8b39c0763e1d407cf985e16e68b5c153cdbdae6e03173972db455da0 memory_open(Test)

1.1.2.2 memory_open FE_3

selftests/devmem:open_devnum

memory_open FE_3

Test open /dev/mem provides the correct min, maj

46dc914c8b39c0763e1d407cf985e16e68b5c153cdbdae6e03173972db455da0 memory_open(Test)

1.1.2.3 test_strict_devmem

selftests/devmem:strict_devmem

test_strict_devmem

Test Strict Devmem enabled - Dependency

1.1.2.4 read_mem FE_1

selftests/devmem:read_at_addr_32bit_ge

read_mem FE_1

Test read 64bit ppos vs 32 bit addr

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.5 read_mem FE_2

selftests/devmem:read_outside_linear_map

read_mem FE_2

Test read outside linear map

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.6 read_mem FE_???

selftests/devmem:read_secret_area

read_mem FE_???

Test read memfd_secret area can not being accessed

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem

1.1.2.7 read_mem FE_3.2

selftests/devmem:read_allowed_area

read_mem FE_3.2

test read allowed area

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.8 read_mem FE_4

selftests/devmem:read_allowed_area_ppos_advance

read_mem FE_4

test read allowed area increments ppos

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.9 read_mem FE_3.3, FE_3.3.1, FE_3.2.2

selftests/devmem:read_restricted_area

read_mem FE_3.3, FE_3.3.1, FE_3.2.2

test read restricted returns zeros

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.10 write_mem - FE_2

selftests/devmem:write_outside_area

write_mem - FE_2

test write outside

6e16917c09ee583de5dc9e8a24a406e75bb229554699a501cfa8efdb308862d7 write_mem(Test)

1.1.2.11 memory_lseek FE_2, FE_2.2

selftests/devmem:seek_seek_set

memory_lseek FE_2, FE_2.2

test seek funcction SEEK_SET

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

1.1.2.12 memory_lseek FE_2, FE_2.1

selftests/devmem:seek_seek_cur

memory_lseek FE_2, FE_2.1

test seek function SEEK_CUR

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

1.1.2.13 memory_lseek FE_2, FE2.3

selftests/devmem:seek_seek_other

memory_lseek FE_2, FE2.3

test seek function SEEK_END other

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

Tracing

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DOC-SUBSYS-TRACING

Tracing

1 Low-Level Requirements

1fb2ff8805cf482cbdfcea23561c850c

Low-Level Requirements

1.1 Event Tracing

5ff8306dcba146eca39619af016fbe43

Event Tracing

1.1.1 Requirements

1ac497acf75d497f893006853f85fe86

Requirements

1.1.1.1 __ftrace_event_enable_disable

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Tracing

__ftrace_event_enable_disable

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.2 __ftrace_set_clr_event_nolock

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Tracing

__ftrace_set_clr_event_nolock

77958d2a51762caa727e5751d8dfec127c07cb5385f542d7b2fdf26b2a07c8b3 __ftrace_event_enable_disable

080fa9a6d27aa94dfaf8cbceb9715cbc146b0671bbe53c10dccf173f911b1a5e trace_set_clr_event

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1.1.1.3 trace_set_clr_event

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Tracing

trace_set_clr_event

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.4 trace_array_set_clr_event

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Tracing

trace_array_set_clr_event

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.5 event_enable_read

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Tracing

event_enable_read

1.1.1.6 event_enable_write

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a87575aecf3aa1cd0b6331c326ce148e818e1f6b44a0d0827b815d3e47ae8f36

Tracing

event_enable_write

Documentation/requirements/

Character Drivers and Misc

c2d4542d5f1741c88dfcb4f68ad7dcbd

DOC-SUBSYS-CHARMISC

Character Drivers and Misc

1 Low-Level Requirements

fd44b777bcd241eaaa427d28e9d01278

Low-Level Requirements

1.1 devmem

897e208488da42eb84e299dade7f6495

devmem

1.1.1 Requirements

61217c39f904471bb9580b9cbbea16b8

Requirements

1.1.1.1 read_mem

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75

e06c773fa9ac085073414a8acdbd3a2fdaea3a90af0a6873462876c1c55ce682

Character Drivers and Misc

read_mem

selftests/devmem:read_at_addr_32bit_ge read_mem FE_1(Test)

selftests/devmem:read_outside_linear_map read_mem FE_2(Test)

selftests/devmem:read_allowed_area read_mem FE_3.2(Test)

selftests/devmem:read_allowed_area_ppos_advance read_mem FE_4(Test)

selftests/devmem:read_restricted_area read_mem FE_3.3, FE_3.3.1, FE_3.2.2(Test)

selftests/devmem:read_secret_area read_mem FE_???

1.1.1.2 write_mem

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83f393fd3b6191e7ad88da40799254f4227893e7212c59e9a41ff429b1eba555

Character Drivers and Misc

write_mem

selftests/devmem:write_outside_area write_mem - FE_2(Test)

1.1.1.3 mmap_mem

032b3f1c9e61452bf826328d95fae043c4ea4b966ad6583a0377554d3c4f2d76

12f2a3571b30462c24cd92d073513eba9e91a052a45057073b1c17de2584546f

Character Drivers and Misc

mmap_mem

1.1.1.4 memory_lseek

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14

17745d554ee1aca155176037541afce34a4c901070a0bdc84d114e8a147a8052

Character Drivers and Misc

memory_lseek

The memory devices use the full 32/64 bits of the offset, and so we cannot check against negative addresses: they are ok. The return value is weird, though, in that case (0).

Also note that seeking relative to the "end of file" isn't supported: it has no meaning, so passing orig equal to SEEK_END returns -EINVAL.

selftests/devmem:seek_seek_set memory_lseek FE_2, FE_2.2(Test)

selftests/devmem:seek_seek_cur memory_lseek FE_2, FE_2.1(Test)

selftests/devmem:seek_seek_other memory_lseek FE_2, FE2.3(Test)

1.1.1.5 open_port

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Character Drivers and Misc

open_port

1.1.1.6 memory_open

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Character Drivers and Misc

memory_open

selftests/devmem:access memory_open FE_1, FE_2, FE_4(Test)

selftests/devmem:open_devnum memory_open FE_3(Test)

1.1.2 Tests

d22df905261145ffaccd62838bcffe1e

Tests

1.1.2.1 memory_open FE_1, FE_2, FE_4

selftests/devmem:access

memory_open FE_1, FE_2, FE_4

Test whether /dev/mem is accessible

46dc914c8b39c0763e1d407cf985e16e68b5c153cdbdae6e03173972db455da0 memory_open(Test)

1.1.2.2 memory_open FE_3

selftests/devmem:open_devnum

memory_open FE_3

Test open /dev/mem provides the correct min, maj

46dc914c8b39c0763e1d407cf985e16e68b5c153cdbdae6e03173972db455da0 memory_open(Test)

1.1.2.3 test_strict_devmem

selftests/devmem:strict_devmem

test_strict_devmem

Test Strict Devmem enabled - Dependency

1.1.2.4 read_mem FE_1

selftests/devmem:read_at_addr_32bit_ge

read_mem FE_1

Test read 64bit ppos vs 32 bit addr

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.5 read_mem FE_2

selftests/devmem:read_outside_linear_map

read_mem FE_2

Test read outside linear map

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.6 read_mem FE_???

selftests/devmem:read_secret_area

read_mem FE_???

Test read memfd_secret area can not being accessed

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem

1.1.2.7 read_mem FE_3.2

selftests/devmem:read_allowed_area

read_mem FE_3.2

test read allowed area

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.8 read_mem FE_4

selftests/devmem:read_allowed_area_ppos_advance

read_mem FE_4

test read allowed area increments ppos

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.9 read_mem FE_3.3, FE_3.3.1, FE_3.2.2

selftests/devmem:read_restricted_area

read_mem FE_3.3, FE_3.3.1, FE_3.2.2

test read restricted returns zeros

a89784c55426aec4b8ba345f281a0ec478d43897a0a248618cb140c03c770c75 read_mem(Test)

1.1.2.10 write_mem - FE_2

selftests/devmem:write_outside_area

write_mem - FE_2

test write outside

6e16917c09ee583de5dc9e8a24a406e75bb229554699a501cfa8efdb308862d7 write_mem(Test)

1.1.2.11 memory_lseek FE_2, FE_2.2

selftests/devmem:seek_seek_set

memory_lseek FE_2, FE_2.2

test seek funcction SEEK_SET

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

1.1.2.12 memory_lseek FE_2, FE_2.1

selftests/devmem:seek_seek_cur

memory_lseek FE_2, FE_2.1

test seek function SEEK_CUR

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

1.1.2.13 memory_lseek FE_2, FE2.3

selftests/devmem:seek_seek_other

memory_lseek FE_2, FE2.3

test seek function SEEK_END other

feb4cb915f91d319078204293f6cf99eb50e775a8f670e478e30e84bd6979a14 memory_lseek(Test)

Tracing

abc4542d5f1741c88dfcb4f68ad7dcbd

DOC-SUBSYS-TRACING

Tracing

1 Low-Level Requirements

1fb2ff8805cf482cbdfcea23561c850c

Low-Level Requirements

1.1 Event Tracing

5ff8306dcba146eca39619af016fbe43

Event Tracing

1.1.1 Requirements

1ac497acf75d497f893006853f85fe86

Requirements

1.1.1.1 __ftrace_event_enable_disable

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Tracing

__ftrace_event_enable_disable

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.2 __ftrace_set_clr_event_nolock

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e51e19a73c8c491cc21da2c53684566c0ceebe26b123fdc16bf859ee6606c43a

Tracing

__ftrace_set_clr_event_nolock

77958d2a51762caa727e5751d8dfec127c07cb5385f542d7b2fdf26b2a07c8b3 __ftrace_event_enable_disable

080fa9a6d27aa94dfaf8cbceb9715cbc146b0671bbe53c10dccf173f911b1a5e trace_set_clr_event

9c8df0f97d3dc3e6e0a2df6ade7f7d99a983559f03b64d3ed16ec6b1314e88bd trace_array_set_clr_event

1.1.1.3 trace_set_clr_event

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Tracing

trace_set_clr_event

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.4 trace_array_set_clr_event

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Tracing

trace_array_set_clr_event

428a5db6e481de87fc424119c30738d83e378b34bb42e12295ddfcba9839e5b3 __ftrace_set_clr_event_nolock

1.1.1.5 event_enable_read

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Tracing

event_enable_read

1.1.1.6 event_enable_write

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Tracing

event_enable_write

1.1.1.7 trace_events_enabled

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Tracing

trace_events_enabled