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-rwxr-xr-xscripts/bloat-o-meter3
-rwxr-xr-xscripts/checkpatch.pl38
-rw-r--r--scripts/gdb/linux/mm.py222
-rw-r--r--scripts/gdb/vmlinux-gdb.py1
-rw-r--r--scripts/spelling.txt17
-rwxr-xr-xscripts/tags.sh10
6 files changed, 279 insertions, 12 deletions
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index f9553f60a14a..36303afa9dfc 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -80,8 +80,7 @@ def calc(oldfile, newfile, format):
if d<0: shrink, down = shrink+1, down-d
delta.append((d, name))
- delta.sort()
- delta.reverse()
+ delta.sort(reverse=True)
return grow, shrink, add, remove, up, down, delta, old, new, otot, ntot
def print_result(symboltype, symbolformat):
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 78cc595b98ce..bd44d12965c9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -823,7 +823,9 @@ our %deprecated_apis = (
"get_state_synchronize_sched" => "get_state_synchronize_rcu",
"cond_synchronize_sched" => "cond_synchronize_rcu",
"kmap" => "kmap_local_page",
+ "kunmap" => "kunmap_local",
"kmap_atomic" => "kmap_local_page",
+ "kunmap_atomic" => "kunmap_local",
);
#Create a search pattern for all these strings to speed up a loop below
@@ -3142,21 +3144,33 @@ sub process {
if ($sign_off =~ /^co-developed-by:$/i) {
if ($email eq $author) {
WARN("BAD_SIGN_OFF",
- "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . "$here\n" . $rawline);
+ "Co-developed-by: should not be used to attribute nominal patch author '$author'\n" . $herecurr);
}
if (!defined $lines[$linenr]) {
WARN("BAD_SIGN_OFF",
- "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline);
- } elsif ($rawlines[$linenr] !~ /^\s*signed-off-by:\s*(.*)/i) {
+ "Co-developed-by: must be immediately followed by Signed-off-by:\n" . $herecurr);
+ } elsif ($rawlines[$linenr] !~ /^signed-off-by:\s*(.*)/i) {
WARN("BAD_SIGN_OFF",
- "Co-developed-by: must be immediately followed by Signed-off-by:\n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
+ "Co-developed-by: must be immediately followed by Signed-off-by:\n" . $herecurr . $rawlines[$linenr] . "\n");
} elsif ($1 ne $email) {
WARN("BAD_SIGN_OFF",
- "Co-developed-by and Signed-off-by: name/email do not match \n" . "$here\n" . $rawline . "\n" .$rawlines[$linenr]);
+ "Co-developed-by and Signed-off-by: name/email do not match\n" . $herecurr . $rawlines[$linenr] . "\n");
+ }
+ }
+
+# check if Reported-by: is followed by a Link:
+ if ($sign_off =~ /^reported(?:|-and-tested)-by:$/i) {
+ if (!defined $lines[$linenr]) {
+ WARN("BAD_REPORTED_BY_LINK",
+ "Reported-by: should be immediately followed by Link: to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
+ } elsif ($rawlines[$linenr] !~ m{^link:\s*https?://}i) {
+ WARN("BAD_REPORTED_BY_LINK",
+ "Reported-by: should be immediately followed by Link: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
}
}
}
+
# Check Fixes: styles is correct
if (!$in_header_lines &&
$line =~ /^\s*fixes:?\s*(?:commit\s*)?[0-9a-f]{5,}\b/i) {
@@ -3250,6 +3264,18 @@ sub process {
$commit_log_possible_stack_dump = 0;
}
+# Check for odd tags before a URI/URL
+ if ($in_commit_log &&
+ $line =~ /^\s*(\w+):\s*http/ && $1 ne 'Link') {
+ if ($1 =~ /^v(?:ersion)?\d+/i) {
+ WARN("COMMIT_LOG_VERSIONING",
+ "Patch version information should be after the --- line\n" . $herecurr);
+ } else {
+ WARN("COMMIT_LOG_USE_LINK",
+ "Unknown link reference '$1:', use 'Link:' instead\n" . $herecurr);
+ }
+ }
+
# Check for lines starting with a #
if ($in_commit_log && $line =~ /^#/) {
if (WARN("COMMIT_COMMENT_SYMBOL",
@@ -3725,7 +3751,7 @@ sub process {
}
# check for embedded filenames
- if ($rawline =~ /^\+.*\Q$realfile\E/) {
+ if ($rawline =~ /^\+.*\b\Q$realfile\E\b/) {
WARN("EMBEDDED_FILENAME",
"It's generally not useful to have the filename in the file\n" . $herecurr);
}
diff --git a/scripts/gdb/linux/mm.py b/scripts/gdb/linux/mm.py
new file mode 100644
index 000000000000..30d837f3dfae
--- /dev/null
+++ b/scripts/gdb/linux/mm.py
@@ -0,0 +1,222 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# gdb helper commands and functions for Linux kernel debugging
+#
+# routines to introspect page table
+#
+# Authors:
+# Dmitrii Bundin <dmitrii.bundin.a@gmail.com>
+#
+
+import gdb
+
+from linux import utils
+
+PHYSICAL_ADDRESS_MASK = gdb.parse_and_eval('0xfffffffffffff')
+
+
+def page_mask(level=1):
+ # 4KB
+ if level == 1:
+ return gdb.parse_and_eval('(u64) ~0xfff')
+ # 2MB
+ elif level == 2:
+ return gdb.parse_and_eval('(u64) ~0x1fffff')
+ # 1GB
+ elif level == 3:
+ return gdb.parse_and_eval('(u64) ~0x3fffffff')
+ else:
+ raise Exception(f'Unknown page level: {level}')
+
+
+#page_offset_base in case CONFIG_DYNAMIC_MEMORY_LAYOUT is disabled
+POB_NO_DYNAMIC_MEM_LAYOUT = '0xffff888000000000'
+def _page_offset_base():
+ pob_symbol = gdb.lookup_global_symbol('page_offset_base')
+ pob = pob_symbol.name if pob_symbol else POB_NO_DYNAMIC_MEM_LAYOUT
+ return gdb.parse_and_eval(pob)
+
+
+def is_bit_defined_tupled(data, offset):
+ return offset, bool(data >> offset & 1)
+
+def content_tupled(data, bit_start, bit_end):
+ return (bit_start, bit_end), data >> bit_start & ((1 << (1 + bit_end - bit_start)) - 1)
+
+def entry_va(level, phys_addr, translating_va):
+ def start_bit(level):
+ if level == 5:
+ return 48
+ elif level == 4:
+ return 39
+ elif level == 3:
+ return 30
+ elif level == 2:
+ return 21
+ elif level == 1:
+ return 12
+ else:
+ raise Exception(f'Unknown level {level}')
+
+ entry_offset = ((translating_va >> start_bit(level)) & 511) * 8
+ entry_va = _page_offset_base() + phys_addr + entry_offset
+ return entry_va
+
+class Cr3():
+ def __init__(self, cr3, page_levels):
+ self.cr3 = cr3
+ self.page_levels = page_levels
+ self.page_level_write_through = is_bit_defined_tupled(cr3, 3)
+ self.page_level_cache_disabled = is_bit_defined_tupled(cr3, 4)
+ self.next_entry_physical_address = cr3 & PHYSICAL_ADDRESS_MASK & page_mask()
+
+ def next_entry(self, va):
+ next_level = self.page_levels
+ return PageHierarchyEntry(entry_va(next_level, self.next_entry_physical_address, va), next_level)
+
+ def mk_string(self):
+ return f"""\
+cr3:
+ {'cr3 binary data': <30} {hex(self.cr3)}
+ {'next entry physical address': <30} {hex(self.next_entry_physical_address)}
+ ---
+ {'bit' : <4} {self.page_level_write_through[0]: <10} {'page level write through': <30} {self.page_level_write_through[1]}
+ {'bit' : <4} {self.page_level_cache_disabled[0]: <10} {'page level cache disabled': <30} {self.page_level_cache_disabled[1]}
+"""
+
+
+class PageHierarchyEntry():
+ def __init__(self, address, level):
+ data = int.from_bytes(
+ memoryview(gdb.selected_inferior().read_memory(address, 8)),
+ "little"
+ )
+ if level == 1:
+ self.is_page = True
+ self.entry_present = is_bit_defined_tupled(data, 0)
+ self.read_write = is_bit_defined_tupled(data, 1)
+ self.user_access_allowed = is_bit_defined_tupled(data, 2)
+ self.page_level_write_through = is_bit_defined_tupled(data, 3)
+ self.page_level_cache_disabled = is_bit_defined_tupled(data, 4)
+ self.entry_was_accessed = is_bit_defined_tupled(data, 5)
+ self.dirty = is_bit_defined_tupled(data, 6)
+ self.pat = is_bit_defined_tupled(data, 7)
+ self.global_translation = is_bit_defined_tupled(data, 8)
+ self.page_physical_address = data & PHYSICAL_ADDRESS_MASK & page_mask(level)
+ self.next_entry_physical_address = None
+ self.hlat_restart_with_ordinary = is_bit_defined_tupled(data, 11)
+ self.protection_key = content_tupled(data, 59, 62)
+ self.executed_disable = is_bit_defined_tupled(data, 63)
+ else:
+ page_size = is_bit_defined_tupled(data, 7)
+ page_size_bit = page_size[1]
+ self.is_page = page_size_bit
+ self.entry_present = is_bit_defined_tupled(data, 0)
+ self.read_write = is_bit_defined_tupled(data, 1)
+ self.user_access_allowed = is_bit_defined_tupled(data, 2)
+ self.page_level_write_through = is_bit_defined_tupled(data, 3)
+ self.page_level_cache_disabled = is_bit_defined_tupled(data, 4)
+ self.entry_was_accessed = is_bit_defined_tupled(data, 5)
+ self.page_size = page_size
+ self.dirty = is_bit_defined_tupled(
+ data, 6) if page_size_bit else None
+ self.global_translation = is_bit_defined_tupled(
+ data, 8) if page_size_bit else None
+ self.pat = is_bit_defined_tupled(
+ data, 12) if page_size_bit else None
+ self.page_physical_address = data & PHYSICAL_ADDRESS_MASK & page_mask(level) if page_size_bit else None
+ self.next_entry_physical_address = None if page_size_bit else data & PHYSICAL_ADDRESS_MASK & page_mask()
+ self.hlat_restart_with_ordinary = is_bit_defined_tupled(data, 11)
+ self.protection_key = content_tupled(data, 59, 62) if page_size_bit else None
+ self.executed_disable = is_bit_defined_tupled(data, 63)
+ self.address = address
+ self.page_entry_binary_data = data
+ self.page_hierarchy_level = level
+
+ def next_entry(self, va):
+ if self.is_page or not self.entry_present[1]:
+ return None
+
+ next_level = self.page_hierarchy_level - 1
+ return PageHierarchyEntry(entry_va(next_level, self.next_entry_physical_address, va), next_level)
+
+
+ def mk_string(self):
+ if not self.entry_present[1]:
+ return f"""\
+level {self.page_hierarchy_level}:
+ {'entry address': <30} {hex(self.address)}
+ {'page entry binary data': <30} {hex(self.page_entry_binary_data)}
+ ---
+ PAGE ENTRY IS NOT PRESENT!
+"""
+ elif self.is_page:
+ def page_size_line(ps_bit, ps, level):
+ return "" if level == 1 else f"{'bit': <3} {ps_bit: <5} {'page size': <30} {ps}"
+
+ return f"""\
+level {self.page_hierarchy_level}:
+ {'entry address': <30} {hex(self.address)}
+ {'page entry binary data': <30} {hex(self.page_entry_binary_data)}
+ {'page size': <30} {'1GB' if self.page_hierarchy_level == 3 else '2MB' if self.page_hierarchy_level == 2 else '4KB' if self.page_hierarchy_level == 1 else 'Unknown page size for level:' + self.page_hierarchy_level}
+ {'page physical address': <30} {hex(self.page_physical_address)}
+ ---
+ {'bit': <4} {self.entry_present[0]: <10} {'entry present': <30} {self.entry_present[1]}
+ {'bit': <4} {self.read_write[0]: <10} {'read/write access allowed': <30} {self.read_write[1]}
+ {'bit': <4} {self.user_access_allowed[0]: <10} {'user access allowed': <30} {self.user_access_allowed[1]}
+ {'bit': <4} {self.page_level_write_through[0]: <10} {'page level write through': <30} {self.page_level_write_through[1]}
+ {'bit': <4} {self.page_level_cache_disabled[0]: <10} {'page level cache disabled': <30} {self.page_level_cache_disabled[1]}
+ {'bit': <4} {self.entry_was_accessed[0]: <10} {'entry has been accessed': <30} {self.entry_was_accessed[1]}
+ {"" if self.page_hierarchy_level == 1 else f"{'bit': <4} {self.page_size[0]: <10} {'page size': <30} {self.page_size[1]}"}
+ {'bit': <4} {self.dirty[0]: <10} {'page dirty': <30} {self.dirty[1]}
+ {'bit': <4} {self.global_translation[0]: <10} {'global translation': <30} {self.global_translation[1]}
+ {'bit': <4} {self.hlat_restart_with_ordinary[0]: <10} {'restart to ordinary': <30} {self.hlat_restart_with_ordinary[1]}
+ {'bit': <4} {self.pat[0]: <10} {'pat': <30} {self.pat[1]}
+ {'bits': <4} {str(self.protection_key[0]): <10} {'protection key': <30} {self.protection_key[1]}
+ {'bit': <4} {self.executed_disable[0]: <10} {'execute disable': <30} {self.executed_disable[1]}
+"""
+ else:
+ return f"""\
+level {self.page_hierarchy_level}:
+ {'entry address': <30} {hex(self.address)}
+ {'page entry binary data': <30} {hex(self.page_entry_binary_data)}
+ {'next entry physical address': <30} {hex(self.next_entry_physical_address)}
+ ---
+ {'bit': <4} {self.entry_present[0]: <10} {'entry present': <30} {self.entry_present[1]}
+ {'bit': <4} {self.read_write[0]: <10} {'read/write access allowed': <30} {self.read_write[1]}
+ {'bit': <4} {self.user_access_allowed[0]: <10} {'user access allowed': <30} {self.user_access_allowed[1]}
+ {'bit': <4} {self.page_level_write_through[0]: <10} {'page level write through': <30} {self.page_level_write_through[1]}
+ {'bit': <4} {self.page_level_cache_disabled[0]: <10} {'page level cache disabled': <30} {self.page_level_cache_disabled[1]}
+ {'bit': <4} {self.entry_was_accessed[0]: <10} {'entry has been accessed': <30} {self.entry_was_accessed[1]}
+ {'bit': <4} {self.page_size[0]: <10} {'page size': <30} {self.page_size[1]}
+ {'bit': <4} {self.hlat_restart_with_ordinary[0]: <10} {'restart to ordinary': <30} {self.hlat_restart_with_ordinary[1]}
+ {'bit': <4} {self.executed_disable[0]: <10} {'execute disable': <30} {self.executed_disable[1]}
+"""
+
+
+class TranslateVM(gdb.Command):
+ """Prints the entire paging structure used to translate a given virtual address.
+
+Having an address space of the currently executed process translates the virtual address
+and prints detailed information of all paging structure levels used for the transaltion.
+Currently supported arch: x86"""
+
+ def __init__(self):
+ super(TranslateVM, self).__init__('translate-vm', gdb.COMMAND_USER)
+
+ def invoke(self, arg, from_tty):
+ if utils.is_target_arch("x86"):
+ vm_address = gdb.parse_and_eval(f'{arg}')
+ cr3_data = gdb.parse_and_eval('$cr3')
+ cr4 = gdb.parse_and_eval('$cr4')
+ page_levels = 5 if cr4 & (1 << 12) else 4
+ page_entry = Cr3(cr3_data, page_levels)
+ while page_entry:
+ gdb.write(page_entry.mk_string())
+ page_entry = page_entry.next_entry(vm_address)
+ else:
+ gdb.GdbError("Virtual address translation is not"
+ "supported for this arch")
+
+
+TranslateVM()
diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py
index 3e8d3669f0ce..3a5b44cd6bfe 100644
--- a/scripts/gdb/vmlinux-gdb.py
+++ b/scripts/gdb/vmlinux-gdb.py
@@ -37,3 +37,4 @@ else:
import linux.clk
import linux.genpd
import linux.device
+ import linux.mm
diff --git a/scripts/spelling.txt b/scripts/spelling.txt
index ded8bcfc0247..f8bd6178d17b 100644
--- a/scripts/spelling.txt
+++ b/scripts/spelling.txt
@@ -65,6 +65,7 @@ acumulative||accumulative
acumulator||accumulator
acutally||actually
adapater||adapter
+adderted||asserted
addional||additional
additionaly||additionally
additonal||additional
@@ -122,6 +123,7 @@ alue||value
ambigious||ambiguous
ambigous||ambiguous
amoung||among
+amount of times||number of times
amout||amount
amplifer||amplifier
amplifyer||amplifier
@@ -287,6 +289,7 @@ capapbilities||capabilities
caputure||capture
carefuly||carefully
cariage||carriage
+casued||caused
catagory||category
cehck||check
challange||challenge
@@ -370,6 +373,7 @@ conbination||combination
conditionaly||conditionally
conditon||condition
condtion||condition
+condtional||conditional
conected||connected
conector||connector
configration||configuration
@@ -423,6 +427,7 @@ cound||could
couter||counter
coutner||counter
cryptocraphic||cryptographic
+cummulative||cumulative
cunter||counter
curently||currently
cylic||cyclic
@@ -625,8 +630,10 @@ exeuction||execution
existance||existence
existant||existent
exixt||exist
+exsits||exists
exlcude||exclude
exlcusive||exclusive
+exlusive||exclusive
exmaple||example
expecially||especially
experies||expires
@@ -664,11 +671,13 @@ feauture||feature
feautures||features
fetaure||feature
fetaures||features
+fetcing||fetching
fileystem||filesystem
fimrware||firmware
fimware||firmware
firmare||firmware
firmaware||firmware
+firtly||firstly
firware||firmware
firwmare||firmware
finanize||finalize
@@ -838,6 +847,7 @@ integrety||integrity
integrey||integrity
intendet||intended
intented||intended
+interal||internal
interanl||internal
interchangable||interchangeable
interferring||interfering
@@ -1023,6 +1033,7 @@ negotation||negotiation
nerver||never
nescessary||necessary
nessessary||necessary
+none existent||non-existent
noticable||noticeable
notication||notification
notications||notifications
@@ -1044,6 +1055,7 @@ occured||occurred
occurence||occurrence
occure||occurred
occuring||occurring
+ocurrence||occurrence
offser||offset
offet||offset
offlaod||offload
@@ -1055,6 +1067,7 @@ omitt||omit
ommiting||omitting
ommitted||omitted
onself||oneself
+onthe||on the
ony||only
openning||opening
operatione||operation
@@ -1121,6 +1134,7 @@ perfomring||performing
periperal||peripheral
peripherial||peripheral
permissons||permissions
+permited||permitted
peroid||period
persistance||persistence
persistant||persistent
@@ -1334,6 +1348,7 @@ sacrifying||sacrificing
safly||safely
safty||safety
satify||satisfy
+satisifed||satisfied
savable||saveable
scaleing||scaling
scaned||scanned
@@ -1558,6 +1573,7 @@ tunning||tuning
ture||true
tyep||type
udpate||update
+updtes||updates
uesd||used
unknwon||unknown
uknown||unknown
@@ -1614,6 +1630,7 @@ unuseful||useless
unvalid||invalid
upate||update
upsupported||unsupported
+upto||up to
useable||usable
usefule||useful
usefull||useful
diff --git a/scripts/tags.sh b/scripts/tags.sh
index e137cf15aae9..84775f08260f 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -264,10 +264,12 @@ exuberant()
--$CTAGS_EXTRA=+fq --c-kinds=+px --fields=+iaS --langmap=c:+.h \
"${regex[@]}"
- setup_regex exuberant kconfig
- all_kconfigs | xargs $1 -a \
- --langdef=kconfig --language-force=kconfig "${regex[@]}"
-
+ KCONFIG_ARGS=()
+ if ! $1 --list-languages | grep -iq kconfig; then
+ setup_regex exuberant kconfig
+ KCONFIG_ARGS=(--langdef=kconfig --language-force=kconfig "${regex[@]}")
+ fi
+ all_kconfigs | xargs $1 -a "${KCONFIG_ARGS[@]}"
}
emacs()