diff --git a/Documentation/DocBook/.gitignore b/Documentation/DocBook/.gitignore index 7ebd5465d927..e05da3f7aa21 100644 --- a/Documentation/DocBook/.gitignore +++ b/Documentation/DocBook/.gitignore @@ -11,5 +11,7 @@ *.png *.gif *.svg +*.proc +*.db media-indices.tmpl media-entities.tmpl diff --git a/Documentation/filesystems/sysfs-tagging.txt b/Documentation/filesystems/sysfs-tagging.txt index eb843e49c5a3..c7c8e6438958 100644 --- a/Documentation/filesystems/sysfs-tagging.txt +++ b/Documentation/filesystems/sysfs-tagging.txt @@ -17,13 +17,13 @@ the sysfs directory entries we ensure that we don't have conflicts in the directories and applications only see a limited set of the network devices. -Each sysfs directory entry may be tagged with zero or one -namespaces. A sysfs_dirent is augmented with a void *s_ns. If a -directory entry is tagged, then sysfs_dirent->s_flags will have a -flag between KOBJ_NS_TYPE_NONE and KOBJ_NS_TYPES, and s_ns will -point to the namespace to which it belongs. +Each sysfs directory entry may be tagged with a namespace via the +void *ns member of its kernfs_node. If a directory entry is tagged, +then kernfs_node->flags will have a flag between KOBJ_NS_TYPE_NONE +and KOBJ_NS_TYPES, and ns will point to the namespace to which it +belongs. -Each sysfs superblock's sysfs_super_info contains an array void +Each sysfs superblock's kernfs_super_info contains an array void *ns[KOBJ_NS_TYPES]. When a task in a tagging namespace kobj_nstype first mounts sysfs, a new superblock is created. It will be differentiated from other sysfs mounts by having its @@ -31,7 +31,7 @@ s_fs_info->ns[kobj_nstype] set to the new namespace. Note that through bind mounting and mounts propagation, a task can easily view the contents of other namespaces' sysfs mounts. Therefore, when a namespace exits, it will call kobj_ns_exit() to invalidate any -sysfs_dirent->s_ns pointers pointing to it. +kernfs_node->ns pointers pointing to it. Users of this interface: - define a type in the kobj_ns_type enumeration. diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt index 9494afb9476a..24da7b32c489 100644 --- a/Documentation/filesystems/sysfs.txt +++ b/Documentation/filesystems/sysfs.txt @@ -40,7 +40,7 @@ ancestors of object hierarchies; i.e. the subsystems the objects belong to. Sysfs internally stores a pointer to the kobject that implements a -directory in the sysfs_dirent object associated with the directory. In +directory in the kernfs_node object associated with the directory. In the past this kobject pointer has been used by sysfs to do reference counting directly on the kobject whenever the file is opened or closed. With the current sysfs implementation the kobject reference count is @@ -191,9 +191,10 @@ implementations: be called again, rearmed, to fill the buffer. - On write(2), sysfs expects the entire buffer to be passed during the - first write. Sysfs then passes the entire buffer to the store() - method. - + first write. Sysfs then passes the entire buffer to the store() method. + A terminating null is added after the data on stores. This makes + functions like sysfs_streq() safe to use. + When writing sysfs files, userspace processes should first read the entire file, modify the values it wishes to change, then write the entire buffer back. diff --git a/Documentation/locking/lockstat.txt b/Documentation/locking/lockstat.txt index 568bbbacee91..5786ad2cd5e6 100644 --- a/Documentation/locking/lockstat.txt +++ b/Documentation/locking/lockstat.txt @@ -12,7 +12,7 @@ Because things like lock contention can severely impact performance. - HOW Lockdep already has hooks in the lock functions and maps lock instances to -lock classes. We build on that (see Documentation/lokcing/lockdep-design.txt). +lock classes. We build on that (see Documentation/locking/lockdep-design.txt). The graph below shows the relation between the lock functions and the various hooks therein. diff --git a/Documentation/misc-devices/apds990x.txt b/Documentation/misc-devices/apds990x.txt index d5408cade32f..454d95d623b3 100644 --- a/Documentation/misc-devices/apds990x.txt +++ b/Documentation/misc-devices/apds990x.txt @@ -30,7 +30,7 @@ lead to false interrupt, but that doesn't harm. ALS contains 4 different gain steps. Driver automatically selects suitable gain step. After each measurement, reliability of the results -is estimated and new measurement is trigged if necessary. +is estimated and new measurement is triggered if necessary. Platform data can provide tuned values to the conversion formulas if values are known. Otherwise plain sensor default values are used. diff --git a/Documentation/misc-devices/isl29003 b/Documentation/misc-devices/isl29003 index c4ff5f38e010..80b952fd32ff 100644 --- a/Documentation/misc-devices/isl29003 +++ b/Documentation/misc-devices/isl29003 @@ -29,7 +29,7 @@ Detection The ISL29003 does not have an ID register which could be used to identify it, so the detection routine will just try to read from the configured I2C -addess and consider the device to be present as soon as it ACKs the +address and consider the device to be present as soon as it ACKs the transfer. diff --git a/Documentation/misc-devices/max6875 b/Documentation/misc-devices/max6875 index 1e89ee3ccc1b..2f2bd0b17b5d 100644 --- a/Documentation/misc-devices/max6875 +++ b/Documentation/misc-devices/max6875 @@ -22,7 +22,7 @@ At reset, the MAX6875 reads the configuration EEPROM into its configuration registers. The chip then begins to operate according to the values in the registers. -The Maxim MAX6874 is a similar, mostly compatible device, with more intputs +The Maxim MAX6874 is a similar, mostly compatible device, with more inputs and outputs: vin gpi vout MAX6874 6 4 8 diff --git a/Documentation/networking/can.txt b/Documentation/networking/can.txt index fd1a1aad49a9..4636b94518da 100644 --- a/Documentation/networking/can.txt +++ b/Documentation/networking/can.txt @@ -1018,25 +1018,34 @@ solution for a couple of reasons: $ ip link set can0 type can help Usage: ip link set DEVICE type can - [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] | - [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1 - phase-seg2 PHASE-SEG2 [ sjw SJW ] ] + [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] | + [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1 + phase-seg2 PHASE-SEG2 [ sjw SJW ] ] - [ loopback { on | off } ] - [ listen-only { on | off } ] - [ triple-sampling { on | off } ] + [ dbitrate BITRATE [ dsample-point SAMPLE-POINT] ] | + [ dtq TQ dprop-seg PROP_SEG dphase-seg1 PHASE-SEG1 + dphase-seg2 PHASE-SEG2 [ dsjw SJW ] ] - [ restart-ms TIME-MS ] - [ restart ] + [ loopback { on | off } ] + [ listen-only { on | off } ] + [ triple-sampling { on | off } ] + [ one-shot { on | off } ] + [ berr-reporting { on | off } ] + [ fd { on | off } ] + [ fd-non-iso { on | off } ] + [ presume-ack { on | off } ] - Where: BITRATE := { 1..1000000 } - SAMPLE-POINT := { 0.000..0.999 } - TQ := { NUMBER } - PROP-SEG := { 1..8 } - PHASE-SEG1 := { 1..8 } - PHASE-SEG2 := { 1..8 } - SJW := { 1..4 } - RESTART-MS := { 0 | NUMBER } + [ restart-ms TIME-MS ] + [ restart ] + + Where: BITRATE := { 1..1000000 } + SAMPLE-POINT := { 0.000..0.999 } + TQ := { NUMBER } + PROP-SEG := { 1..8 } + PHASE-SEG1 := { 1..8 } + PHASE-SEG2 := { 1..8 } + SJW := { 1..4 } + RESTART-MS := { 0 | NUMBER } - Display CAN device details and statistics: @@ -1178,7 +1187,55 @@ solution for a couple of reasons: The CAN device MTU can be retrieved e.g. with a SIOCGIFMTU ioctl() syscall. N.B. CAN FD capable devices can also handle and send legacy CAN frames. - FIXME: Add details about the CAN FD controller configuration when available. + When configuring CAN FD capable CAN controllers an additional 'data' bitrate + has to be set. This bitrate for the data phase of the CAN FD frame has to be + at least the bitrate which was configured for the arbitration phase. This + second bitrate is specified analogue to the first bitrate but the bitrate + setting keywords for the 'data' bitrate start with 'd' e.g. dbitrate, + dsample-point, dsjw or dtq and similar settings. When a data bitrate is set + within the configuration process the controller option "fd on" can be + specified to enable the CAN FD mode in the CAN controller. This controller + option also switches the device MTU to 72 (CANFD_MTU). + + The first CAN FD specification presented as whitepaper at the International + CAN Conference 2012 needed to be improved for data integrity reasons. + Therefore two CAN FD implementations have to be distinguished today: + + - ISO compliant: The ISO 11898-1:2015 CAN FD implementation (default) + - non-ISO compliant: The CAN FD implementation following the 2012 whitepaper + + Finally there are three types of CAN FD controllers: + + 1. ISO compliant (fixed) + 2. non-ISO compliant (fixed, like the M_CAN IP core v3.0.1 in m_can.c) + 3. ISO/non-ISO CAN FD controllers (switchable, like the PEAK PCAN-USB FD) + + The current ISO/non-ISO mode is announced by the CAN controller driver via + netlink and displayed by the 'ip' tool (controller option FD-NON-ISO). + The ISO/non-ISO-mode can be altered by setting 'fd-non-iso {on|off}' for + switchable CAN FD controllers only. + + Example configuring 500 kbit/s arbitration bitrate and 4 Mbit/s data bitrate: + + $ ip link set can0 up type can bitrate 500000 sample-point 0.75 \ + dbitrate 4000000 dsample-point 0.8 fd on + $ ip -details link show can0 + 5: can0: mtu 72 qdisc pfifo_fast state UNKNOWN \ + mode DEFAULT group default qlen 10 + link/can promiscuity 0 + can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0 + bitrate 500000 sample-point 0.750 + tq 50 prop-seg 14 phase-seg1 15 phase-seg2 10 sjw 1 + pcan_usb_pro_fd: tseg1 1..64 tseg2 1..16 sjw 1..16 brp 1..1024 \ + brp-inc 1 + dbitrate 4000000 dsample-point 0.800 + dtq 12 dprop-seg 7 dphase-seg1 8 dphase-seg2 4 dsjw 1 + pcan_usb_pro_fd: dtseg1 1..16 dtseg2 1..8 dsjw 1..4 dbrp 1..1024 \ + dbrp-inc 1 + clock 80000000 + + Example when 'fd-non-iso on' is added on this switchable CAN FD adapter: + can state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0 6.7 Supported CAN hardware diff --git a/Documentation/rbtree.txt b/Documentation/rbtree.txt index 39873ef41bf9..b9d9cc57be18 100644 --- a/Documentation/rbtree.txt +++ b/Documentation/rbtree.txt @@ -203,7 +203,7 @@ functions with the user provided augmentation callback when inserting and erasing nodes. C files implementing augmented rbtree manipulation must include - instead of . Note that + instead of . Note that linux/rbtree_augmented.h exposes some rbtree implementations details you are not expected to rely on; please stick to the documented APIs there and do not include from header files diff --git a/Documentation/zh_CN/filesystems/sysfs.txt b/Documentation/zh_CN/filesystems/sysfs.txt index e230eaa33122..7d3b05edb8ce 100644 --- a/Documentation/zh_CN/filesystems/sysfs.txt +++ b/Documentation/zh_CN/filesystems/sysfs.txt @@ -61,7 +61,7 @@ Documentation/kobject.txt 文档以获得更多关于 kobject 接口的 内核的对象层次到用户空间。sysfs 中的顶层目录代表着内核对象层次的 共同祖先；例如：某些对象属于某个子系统。 -Sysfs 在与其目录关联的 sysfs_dirent 对象中内部保存一个指向实现 +Sysfs 在与其目录关联的 kernfs_node 对象中内部保存一个指向实现 目录的 kobject 的指针。以前，这个 kobject 指针被 sysfs 直接用于 kobject 文件打开和关闭的引用计数。而现在的 sysfs 实现中，kobject 引用计数只能通过 sysfs_schedule_callback() 函数直接修改。 diff --git a/MAINTAINERS b/MAINTAINERS index 274f85405584..5b8a80e4c278 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3496,6 +3496,8 @@ M: Jonathan Corbet L: linux-doc@vger.kernel.org S: Maintained F: Documentation/ +F: scripts/docproc.c +F: scripts/kernel-doc* X: Documentation/ABI/ X: Documentation/devicetree/ X: Documentation/acpi diff --git a/README b/README index a326a6a6a46f..f4756ee1c918 100644 --- a/README +++ b/README @@ -24,7 +24,7 @@ ON WHAT HARDWARE DOES IT RUN? today Linux also runs on (at least) the Compaq Alpha AXP, Sun SPARC and UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, Cell, IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64, AXIS CRIS, - Xtensa, Tilera TILE, AVR32 and Renesas M32R architectures. + Xtensa, Tilera TILE, AVR32, ARC and Renesas M32R architectures. Linux is easily portable to most general-purpose 32- or 64-bit architectures as long as they have a paged memory management unit (PMMU) and a port of the diff --git a/scripts/kernel-doc b/scripts/kernel-doc index 9a08fb5c1af6..25029bcaf583 100755 --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -206,59 +206,73 @@ my $type_env = '(\$\w+)'; # One for each output format # these work fairly well -my %highlights_html = ( $type_constant, "\$1", - $type_func, "\$1", - $type_struct_xml, "\$1", - $type_env, "\$1", - $type_param, "\$1" ); +my @highlights_html = ( + [$type_constant, "\$1"], + [$type_func, "\$1"], + [$type_struct_xml, "\$1"], + [$type_env, "\$1"], + [$type_param, "\$1"] + ); my $local_lt = "\\\\\\\\lt:"; my $local_gt = "\\\\\\\\gt:"; my $blankline_html = $local_lt . "p" . $local_gt; # was "

" # html version 5 -my %highlights_html5 = ( $type_constant, "\$1", - $type_func, "\$1", - $type_struct_xml, "\$1", - $type_env, "\$1", - $type_param, "\$1" ); +my @highlights_html5 = ( + [$type_constant, "\$1"], + [$type_func, "\$1"], + [$type_struct_xml, "\$1"], + [$type_env, "\$1"], + [$type_param, "\$1]"] + ); my $blankline_html5 = $local_lt . "br /" . $local_gt; # XML, docbook format -my %highlights_xml = ( "([^=])\\\"([^\\\"<]+)\\\"", "\$1\$2", - $type_constant, "\$1", - $type_func, "\$1", - $type_struct_xml, "\$1", - $type_env, "\$1", - $type_param, "\$1" ); +my @highlights_xml = ( + ["([^=])\\\"([^\\\"<]+)\\\"", "\$1\$2"], + [$type_constant, "\$1"], + [$type_struct_xml, "\$1"], + [$type_param, "\$1"], + [$type_func, "\$1"], + [$type_env, "\$1"] + ); my $blankline_xml = $local_lt . "/para" . $local_gt . $local_lt . "para" . $local_gt . "\n"; # gnome, docbook format -my %highlights_gnome = ( $type_constant, "\$1", - $type_func, "\$1", - $type_struct, "\$1", - $type_env, "\$1", - $type_param, "\$1" ); +my @highlights_gnome = ( + [$type_constant, "\$1"], + [$type_func, "\$1"], + [$type_struct, "\$1"], + [$type_env, "\$1"], + [$type_param, "\$1" ] + ); my $blankline_gnome = "\n"; # these are pretty rough -my %highlights_man = ( $type_constant, "\$1", - $type_func, "\\\\fB\$1\\\\fP", - $type_struct, "\\\\fI\$1\\\\fP", - $type_param, "\\\\fI\$1\\\\fP" ); +my @highlights_man = ( + [$type_constant, "\$1"], + [$type_func, "\\\\fB\$1\\\\fP"], + [$type_struct, "\\\\fI\$1\\\\fP"], + [$type_param, "\\\\fI\$1\\\\fP"] + ); my $blankline_man = ""; # text-mode -my %highlights_text = ( $type_constant, "\$1", - $type_func, "\$1", - $type_struct, "\$1", - $type_param, "\$1" ); +my @highlights_text = ( + [$type_constant, "\$1"], + [$type_func, "\$1"], + [$type_struct, "\$1"], + [$type_param, "\$1"] + ); my $blankline_text = ""; # list mode -my %highlights_list = ( $type_constant, "\$1", - $type_func, "\$1", - $type_struct, "\$1", - $type_param, "\$1" ); +my @highlights_list = ( + [$type_constant, "\$1"], + [$type_func, "\$1"], + [$type_struct, "\$1"], + [$type_param, "\$1"] + ); my $blankline_list = ""; # read arguments @@ -273,7 +287,7 @@ my $verbose = 0; my $output_mode = "man"; my $output_preformatted = 0; my $no_doc_sections = 0; -my %highlights = %highlights_man; +my @highlights = @highlights_man; my $blankline = $blankline_man; my $modulename = "Kernel API"; my $function_only = 0; @@ -374,31 +388,31 @@ while ($ARGV[0] =~ m/^-(.*)/) { my $cmd = shift @ARGV; if ($cmd eq "-html") { $output_mode = "html"; - %highlights = %highlights_html; + @highlights = @highlights_html; $blankline = $blankline_html; } elsif ($cmd eq "-html5") { $output_mode = "html5"; - %highlights = %highlights_html5; + @highlights = @highlights_html5; $blankline = $blankline_html5; } elsif ($cmd eq "-man") { $output_mode = "man"; - %highlights = %highlights_man; + @highlights = @highlights_man; $blankline = $blankline_man; } elsif ($cmd eq "-text") { $output_mode = "text"; - %highlights = %highlights_text; + @highlights = @highlights_text; $blankline = $blankline_text; } elsif ($cmd eq "-docbook") { $output_mode = "xml"; - %highlights = %highlights_xml; + @highlights = @highlights_xml; $blankline = $blankline_xml; } elsif ($cmd eq "-list") { $output_mode = "list"; - %highlights = %highlights_list; + @highlights = @highlights_list; $blankline = $blankline_list; } elsif ($cmd eq "-gnome") { $output_mode = "gnome"; - %highlights = %highlights_gnome; + @highlights = @highlights_gnome; $blankline = $blankline_gnome; } elsif ($cmd eq "-module") { # not needed for XML, inherits from calling document $modulename = shift @ARGV; @@ -1746,7 +1760,7 @@ sub output_declaration { my $func = "output_${functype}_$output_mode"; if (($function_only==0) || ( $function_only == 1 && defined($function_table{$name})) || - ( $function_only == 2 && !defined($function_table{$name}))) + ( $function_only == 2 && !($functype eq "function" && defined($function_table{$name})))) { &$func(@_); $section_counter++; @@ -2391,12 +2405,13 @@ sub process_file($) { my $descr; my $in_purpose = 0; my $initial_section_counter = $section_counter; + my ($orig_file) = @_; if (defined($ENV{'SRCTREE'})) { - $file = "$ENV{'SRCTREE'}" . "/" . "@_"; + $file = "$ENV{'SRCTREE'}" . "/" . $orig_file; } else { - $file = "@_"; + $file = $orig_file; } if (defined($source_map{$file})) { $file = $source_map{$file}; @@ -2640,7 +2655,7 @@ sub process_file($) { print "\n"; print " \n"; print " \n"; - print " ${file}\n"; + print " ${orig_file}\n"; print " \n"; print " \n"; print " Document generation inconsistency\n"; @@ -2654,7 +2669,7 @@ sub process_file($) { print " \n"; print " The template for this document tried to insert\n"; print " the structured comment from the file\n"; - print " ${file} at this point,\n"; + print " ${orig_file} at this point,\n"; print " but none was found.\n"; print " This dummy section is inserted to allow\n"; print " generation to continue.\n"; @@ -2671,9 +2686,11 @@ $kernelversion = get_kernel_version(); # generate a sequence of code that will splice in highlighting information # using the s// operator. -foreach my $pattern (sort keys %highlights) { -# print STDERR "scanning pattern:$pattern, highlight:($highlights{$pattern})\n"; - $dohighlight .= "\$contents =~ s:$pattern:$highlights{$pattern}:gs;\n"; +foreach my $k (keys @highlights) { + my $pattern = $highlights[$k][0]; + my $result = $highlights[$k][1]; +# print STDERR "scanning pattern:$pattern, highlight:($result)\n"; + $dohighlight .= "\$contents =~ s:$pattern:$result:gs;\n"; } # Read the file that maps relative names to absolute names for