For the upcoming 'define the _ddebug descriptor in assembly', we need
all the descriptors in a translation unit to have distinct names
(because asm does not understand C scope). The easiest way to achieve
that is as usual with an extra level of macros, passing the identifier
to use to the innermost macro, generating it via __UNIQUE_ID or
something.
However, instead of repeating that exercise for dynamic_pr_debug,
dynamic_dev_dbg, dynamic_netdev_dbg and dynamic_hex_dump separately, we
can use the similarity between their bodies to implement them via a
common macro, _dynamic_func_call - though the hex_dump case requires a
slight variant, since print_hex_dump does not take the _ddebug
descriptor. We'll also get to use that variant elsewhere (btrfs).
Link: http://lkml.kernel.org/r/20190212214150.4807-11-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
For symmetry with ddebug_remove_module, and to avoid a bit of ifdeffery
in module.c, move the declaration of ddebug_add_module inside #if
defined(CONFIG_DYNAMIC_DEBUG) and add a corresponding no-op stub in the
#else branch.
Link: http://lkml.kernel.org/r/20190212214150.4807-10-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This serves two purposes: First, we get a diagnostic if (though
extremely unlikely), any of the calls of ddebug_add_module for built-in
code fails, effectively disabling dynamic_debug. Second, I want to make
struct _ddebug opaque, and avoid accessing any of its members outside
dynamic_debug.[ch].
Link: http://lkml.kernel.org/r/20190212214150.4807-9-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The only caller of ddebug_{add,remove}_module outside dynamic_debug.c is
kernel/module.c, which is obviously not itself modular (though it would
be an interesting exercise to make that happen...). I also fail to see
how these interfaces can be used by modules, in-tree or not.
Link: http://lkml.kernel.org/r/20190212214150.4807-8-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that we store the passed-in string directly in ddebug_add_module, we
can use pointer equality instead of strcmp. This is a little more
efficient, but more importantly, this also makes the code somewhat more
correct:
Currently, if one loads and then unloads a module whose name happens to
match the KBUILD_MODNAME of some built-in functionality (which need not
even be modular at all), all of their dynamic debug entries vanish along
with those of the actual module. For example, loading and unloading a
core.ko hides all pr_debugs from drivers/base/core.c and other built-in
files called core.c (incidentally, there is an in-tree module whose name
is core, but I just tested this with an out-of-tree trivial one).
Link: http://lkml.kernel.org/r/20190212214150.4807-7-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
For built-in modules, we're already reusing the passed-in string via
kstrdup_const(). But for actual modules (i.e. when we're called from
dynamic_debug_setup in module.c), the passed-in string (which points at
the name[] array inside struct module) is also guaranteed to live at
least as long as the struct ddebug_table, since free_module() calls
ddebug_remove_module().
Link: http://lkml.kernel.org/r/20190212214150.4807-6-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of defining DEFINE_DYNAMIC_DEBUG_METADATA in terms of a helper
DEFINE_DYNAMIC_DEBUG_METADATA_KEY, that needs another helper dd_key_init
to be properly defined, just make the various #ifdef branches define a
_DPRINTK_KEY_INIT that can be used directly, similar to
_DPRINTK_FLAGS_DEFAULT.
Link: http://lkml.kernel.org/r/20190212214150.4807-5-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
pr_debug_ratelimited tests the dynamic debug descriptor the
old-fashioned way, and doesn't utilize the static key/jump label
implementation when CONFIG_JUMP_LABEL is set. Use the
DYNAMIC_DEBUG_BRANCH which is defined appropriately.
Link: http://lkml.kernel.org/r/20190212214150.4807-4-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Petr Mladek <pmladek@suse.com>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
net_dbg_ratelimited tests the dynamic debug descriptor the old-fashioned
way, and doesn't utilize the static key/jump label implementation when
CONFIG_JUMP_LABEL is set. Use the DYNAMIC_DEBUG_BRANCH which is defined
appropriately.
Link: http://lkml.kernel.org/r/20190212214150.4807-3-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "various dynamic_debug patches", v4.
This started as an experiment to see how hard it would be to change the
four pointers in struct _ddebug into relative offsets, a la
CONFIG_GENERIC_BUG_RELATIVE_POINTERS, thus saving 16 bytes per pr_debug
site (and thus exactly making up for the extra space used by the
introduction of jump labels in 9049fc74). I stumbled on a few things
that are probably worth fixing regardless of whether that goal is deemed
worthwhile.
Back at v3 (in November), I redid the implementation on top of the fancy
new asm-macros stuff. Luckily enough, v3 didn't get picked up, since
the asm-macros were backed out again. I still want to do the
relative-pointers thing eventually, but we're close to the merge window
opening, so here's just most of the "incidental" patches, some of which
also serve as preparation for the relative pointers.
This patch (of 4):
dev_dbg_ratelimited tests the dynamic debug descriptor the old-fashioned
way, and doesn't utilize the static key/jump label implementation when
CONFIG_JUMP_LABEL is set. Use the DYNAMIC_DEBUG_BRANCH which is defined
appropriately.
Link: http://lkml.kernel.org/r/20190212214150.4807-2-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jason Baron <jbaron@akamai.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 95846ecf9d ("pid: replace pid bitmap implementation with IDR
API") removed next_pidmap() but left its declaration.
Remove it. No functional change.
Link: http://lkml.kernel.org/r/20190213113736.21922-1-namit@vmware.com
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
<linux/kernel.h> tends to be cluttered because we often put various sort
of unrelated stuff in it. So, we have split out a sensible chunk of
code into a separate header from time to time.
This commit splits out the *_MAX and *_MIN defines.
The standard header <limits.h> contains various MAX, MIN constants
including numerial limits. [1]
I think it makes sense to move in-kernel MAX, MIN constants into
include/linux/limits.h.
We already have include/uapi/linux/limits.h to contain some user-space
constants. I changed its include guard to _UAPI_LINUX_LIMITS_H. This
change has no impact to the user-space because
scripts/headers_install.sh rips off the '_UAPI' prefix from the include
guards of exported headers.
[1] http://pubs.opengroup.org/onlinepubs/009604499/basedefs/limits.h.html
Link: http://lkml.kernel.org/r/1549156242-20806-2-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alex Elder <elder@linaro.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The commit log of 44f564a4bf ("ipc: add definitions of USHORT_MAX and
others") did not explain why it used (s16) and (u16) instead of (short)
and (unsigned short).
Let's use (short) and (unsigned short), which is more sensible, and more
consistent with the other MAX/MIN defines.
As you see in include/uapi/asm-generic/int-ll64.h, s16/u16 are
typedef'ed as signed/unsigned short. So, this commit does not have a
functional change.
Remove the unneeded parentheses around ~0U while we are here.
Link: http://lkml.kernel.org/r/1549156242-20806-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Zhang Yanmin <yanmin.zhang@intel.com>
Cc: Alex Elder <elder@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of doing this compile-time check in some slightly arbitrary user
of struct filename, put it next to the definition.
Link: http://lkml.kernel.org/r/20190208203015.29702-3-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
At the time of commit d048419311 ("lib/vsprintf.c: expand field_width
to 24 bits"), there was no compiletime_assert/BUILD_BUG/.... variant
that could be used outside function scope. Now we have static_assert(),
so move the assertion next to the definition instead of hiding it in
some arbitrary function.
Also add the appropriate #include to avoid relying on build_bug.h being
pulled in via some arbitrary chain of includes.
Link: http://lkml.kernel.org/r/20190208203015.29702-2-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
BUILD_BUG_ON() is a little annoying, since it cannot be used outside
function scope. So one cannot put assertions about the sizeof() a
struct next to the struct definition, but has to hide that in some more
or less arbitrary function.
Since gcc 4.6 (which is now also the required minimum), there is support
for the C11 _Static_assert in all C modes, including gnu89. So add a
simple wrapper for that.
_Static_assert() requires a message argument, which is usually quite
redundant (and I believe that bug got fixed at least in newer C++
standards), but we can easily work around that with a little macro
magic, making it optional.
For example, adding
static_assert(sizeof(struct printf_spec) == 8);
in vsprintf.c and modifying that struct to violate it, one gets
./include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct printf_spec) == 8"
#define __static_assert(expr, msg, ...) _Static_assert(expr, "" msg "")
godbolt.org suggests that _Static_assert() has been support by clang
since at least 3.0.0.
Link: http://lkml.kernel.org/r/20190208203015.29702-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some of the more common spelling mistakes and typos that I've
found while fixing up spelling mistakes in the kernel over the past 4
months.
Link: http://lkml.kernel.org/r/20190114110215.1986-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is a plan to build the kernel with -Wimplicit-fallthrough and this
place in the code produced a warning (W=1).
This commit remove the following warning:
kernel/sys.c:1748:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
Link: http://lkml.kernel.org/r/20190114203347.17530-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since commit a2e5144538 ("kernel/hung_task.c: allow to set checking
interval separately from timeout") added hung_task_check_interval_secs,
setting a value different from hung_task_timeout_secs
echo 0 > /proc/sys/kernel/hung_task_panic
echo 120 > /proc/sys/kernel/hung_task_timeout_secs
echo 5 > /proc/sys/kernel/hung_task_check_interval_secs
causes confusing output as if the task was blocked for
hung_task_timeout_secs seconds from the previous report.
[ 399.395930] INFO: task kswapd0:75 blocked for more than 120 seconds.
[ 405.027637] INFO: task kswapd0:75 blocked for more than 120 seconds.
[ 410.659725] INFO: task kswapd0:75 blocked for more than 120 seconds.
[ 416.292860] INFO: task kswapd0:75 blocked for more than 120 seconds.
[ 421.932305] INFO: task kswapd0:75 blocked for more than 120 seconds.
Although we could update t->last_switch_time after sched_show_task(t) if
we want to report only every 120 seconds, reporting every 5 seconds
might not be very bad for monitoring after a problematic situation has
started. Thus, let's use continuously blocked time instead of updating
previously reported time.
[ 677.985011] INFO: task kswapd0:80 blocked for more than 122 seconds.
[ 693.856126] INFO: task kswapd0:80 blocked for more than 138 seconds.
[ 709.728075] INFO: task kswapd0:80 blocked for more than 154 seconds.
[ 725.600018] INFO: task kswapd0:80 blocked for more than 170 seconds.
[ 741.473133] INFO: task kswapd0:80 blocked for more than 186 seconds.
Link: http://lkml.kernel.org/r/1551175083-10669-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
sparse complains:
CHECK kernel/hung_task.c
kernel/hung_task.c:28:19: warning: symbol 'sysctl_hung_task_check_count' was not declared. Should it be static?
kernel/hung_task.c:42:29: warning: symbol 'sysctl_hung_task_timeout_secs' was not declared. Should it be static?
kernel/hung_task.c:47:29: warning: symbol 'sysctl_hung_task_check_interval_secs' was not declared. Should it be static?
kernel/hung_task.c:49:19: warning: symbol 'sysctl_hung_task_warnings' was not declared. Should it be static?
kernel/hung_task.c:61:28: warning: symbol 'sysctl_hung_task_panic' was not declared. Should it be static?
kernel/hung_task.c:219:5: warning: symbol 'proc_dohung_task_timeout_secs' was not declared. Should it be static?
Add the appropriate header file to provide declarations.
Link: http://lkml.kernel.org/r/467.1548649525@turing-police.cc.vt.edu
Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: "Paul E. McKenney" <paulmck@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use "unsigned int" instead of "unsigned", to make code more clear.
Link: http://lkml.kernel.org/r/1551354739-6648-1-git-send-email-wdjjwb@163.com
Signed-off-by: WangBo <wang.bo116@zte.com.cn>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The single quotation marks around "const" were causing a documentation
markup warning with reST. Instead of fixing that warning, just delete
that comment line and the gcc-3.3 hack of using "const" in the roundup()
macro since gcc-3.3 is no longer supported for kernel builds.
I did around 20 different $arch builds with no problems, but we'll just
have to see if this causes problems for anyone else out there.
Link: http://lkml.kernel.org/r/ec5dcf72-7c3e-3513-af0c-4003ed598854@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for
debugfs files.
Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().
Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
The _unsafe() part suggests that some of them "safeness
responsibilities" are now panic.c responsibilities. The patch is OK
since panic's clear_warn_once_fops struct file_operations is safe
against removal, so we don't have to use otherwise necessary
debugfs_file_get()/debugfs_file_put().
[sergey.senozhatsky.work@gmail.com: changelog addition]
Link: http://lkml.kernel.org/r/1545990861-158097-1-git-send-email-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Include asm/div64.h for do_div() usage in DIV_ROUND_DOWN_ULL() and
DIV_ROUND_CLOSEST_ULL(). Remove the old CONFIG_LBDAF=y conditional
include.
Link: http://lkml.kernel.org/r/20181228153430.23763-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull x86 UV updates from Ingo Molnar:
"Three UV related cleanups"
* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/UV: Use efi_enabled() instead of test_bit()
x86/platform/UV: Remove uv_bios_call_reentrant()
x86/platform/UV: Remove unnecessary #ifdef CONFIG_EFI
Pull x86 platform update from Ingo Molnar:
"A defconfig update"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/defconfig: Enable EFI stub, mixed mode and BGRT
Pull x86 mm cleanup from Ingo Molnar:
"A single GUP cleanup"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mm/gup: Remove the 'write' parameter from gup_fast_permitted()
Pull x86 kdump update from Ingo Molnar:
"Add the AMD SME mask to the vmcoreinfo, and also document our
vmcoreinfo fields"
* 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kdump: Document kernel data exported in the vmcoreinfo note
x86/kdump: Export the SME mask to vmcoreinfo
Pull x86 fpu updates from Ingo Molnar:
"Three changes:
- preparatory patch for AVX state tracking that computing-cluster
folks would like to use for user-space batching - but we are not
happy about the related ABI yet so this is only the kernel tracking
side
- a cleanup for CR0 handling in do_device_not_available()
- plus we removed a workaround for an ancient binutils version"
* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Track AVX-512 usage of tasks
x86/fpu: Get rid of CONFIG_AS_FXSAVEQ
x86/traps: Have read_cr0() only once in the #NM handler
Pull x86 cleanups from Ingo Molnar:
"Various cleanups and simplifications, none of them really stands out,
they are all over the place"
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/uaccess: Remove unused __addr_ok() macro
x86/smpboot: Remove unused phys_id variable
x86/mm/dump_pagetables: Remove the unused prev_pud variable
x86/fpu: Move init_xstate_size() to __init section
x86/cpu_entry_area: Move percpu_setup_debug_store() to __init section
x86/mtrr: Remove unused variable
x86/boot/compressed/64: Explain paging_prepare()'s return value
x86/resctrl: Remove duplicate MSR_MISC_FEATURE_CONTROL definition
x86/asm/suspend: Drop ENTRY from local data
x86/hw_breakpoints, kprobes: Remove kprobes ifdeffery
x86/boot: Save several bytes in decompressor
x86/trap: Remove useless declaration
x86/mm/tlb: Remove unused cpu variable
x86/events: Mark expected switch-case fall-throughs
x86/asm-prototypes: Remove duplicate include <asm/page.h>
x86/kernel: Mark expected switch-case fall-throughs
x86/insn-eval: Mark expected switch-case fall-through
x86/platform/UV: Replace kmalloc() and memset() with k[cz]alloc() calls
x86/e820: Replace kmalloc() + memcpy() with kmemdup()
Pull x86 build updates from Ingo Molnar:
"Misc cleanups and a retpoline code generation optimization"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, retpolines: Raise limit for generating indirect calls from switch-case
x86/build: Use the single-argument OUTPUT_FORMAT() linker script command
x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
x86/build: Mark per-CPU symbols as absolute explicitly for LLD
Pull x86 boot updates from Ingo Molnar:
"Most of the changes center around the difficult problem of KASLR
pinning down hot-removable memory regions. At the very early stage
KASRL is making irreversible kernel address layout decisions we don't
have full knowledge about the memory maps yet.
So the changes from Chao Fan add this (parsing the RSDP table early),
together with fixes from Borislav Petkov"
* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/compressed/64: Do not read legacy ROM on EFI system
x86/boot: Correct RSDP parsing with 32-bit EFI
x86/kexec: Fill in acpi_rsdp_addr from the first kernel
x86/boot: Fix randconfig build error due to MEMORY_HOTREMOVE
x86/boot: Fix cmdline_find_option() prototype visibility
x86/boot/KASLR: Limit KASLR to extract the kernel in immovable memory only
x86/boot: Parse SRAT table and count immovable memory regions
x86/boot: Early parse RSDP and save it in boot_params
x86/boot: Search for RSDP in memory
x86/boot: Search for RSDP in the EFI tables
x86/boot: Add "acpi_rsdp=" early parsing
x86/boot: Copy kstrtoull() to boot/string.c
x86/boot: Build the command line parsing code unconditionally
Notable changes:
- Enable THREAD_INFO_IN_TASK to move thread_info off the stack.
- A big series from Christoph reworking our DMA code to use more of the generic
infrastructure, as he said:
"This series switches the powerpc port to use the generic swiotlb and
noncoherent dma ops, and to use more generic code for the coherent direct
mapping, as well as removing a lot of dead code."
- Increase our vmalloc space to 512T with the Hash MMU on modern CPUs, allowing
us to support machines with larger amounts of total RAM or distance between
nodes.
- Two series from Christophe, one to optimise TLB miss handlers on 6xx, and
another to optimise the way STRICT_KERNEL_RWX is implemented on some 32-bit
CPUs.
- Support for KCOV coverage instrumentation which means we can run syzkaller
and discover even more bugs in our code.
And as always many clean-ups, reworks and minor fixes etc.
Thanks to:
Alan Modra, Alexey Kardashevskiy, Alistair Popple, Andrea Arcangeli, Andrew
Donnellan, Aneesh Kumar K.V, Aravinda Prasad, Balbir Singh, Brajeswar Ghosh,
Breno Leitao, Christian Lamparter, Christian Zigotzky, Christophe Leroy,
Christoph Hellwig, Corentin Labbe, Daniel Axtens, David Gibson, Diana Craciun,
Firoz Khan, Gustavo A. R. Silva, Igor Stoppa, Joe Lawrence, Joel Stanley,
Jonathan Neuschäfer, Jordan Niethe, Laurent Dufour, Madhavan Srinivasan, Mahesh
Salgaonkar, Mark Cave-Ayland, Masahiro Yamada, Mathieu Malaterre, Matteo Croce,
Meelis Roos, Michael W. Bringmann, Nathan Chancellor, Nathan Fontenot, Nicholas
Piggin, Nick Desaulniers, Nicolai Stange, Oliver O'Halloran, Paul Mackerras,
Peter Xu, PrasannaKumar Muralidharan, Qian Cai, Rashmica Gupta, Reza Arbab,
Robert P. J. Day, Russell Currey, Sabyasachi Gupta, Sam Bobroff, Sandipan Das,
Sergey Senozhatsky, Souptick Joarder, Stewart Smith, Tyrel Datwyler, Vaibhav
Jain, YueHaibing.
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Merge tag 'powerpc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Notable changes:
- Enable THREAD_INFO_IN_TASK to move thread_info off the stack.
- A big series from Christoph reworking our DMA code to use more of
the generic infrastructure, as he said:
"This series switches the powerpc port to use the generic swiotlb
and noncoherent dma ops, and to use more generic code for the
coherent direct mapping, as well as removing a lot of dead
code."
- Increase our vmalloc space to 512T with the Hash MMU on modern
CPUs, allowing us to support machines with larger amounts of total
RAM or distance between nodes.
- Two series from Christophe, one to optimise TLB miss handlers on
6xx, and another to optimise the way STRICT_KERNEL_RWX is
implemented on some 32-bit CPUs.
- Support for KCOV coverage instrumentation which means we can run
syzkaller and discover even more bugs in our code.
And as always many clean-ups, reworks and minor fixes etc.
Thanks to: Alan Modra, Alexey Kardashevskiy, Alistair Popple, Andrea
Arcangeli, Andrew Donnellan, Aneesh Kumar K.V, Aravinda Prasad, Balbir
Singh, Brajeswar Ghosh, Breno Leitao, Christian Lamparter, Christian
Zigotzky, Christophe Leroy, Christoph Hellwig, Corentin Labbe, Daniel
Axtens, David Gibson, Diana Craciun, Firoz Khan, Gustavo A. R. Silva,
Igor Stoppa, Joe Lawrence, Joel Stanley, Jonathan Neuschäfer, Jordan
Niethe, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark
Cave-Ayland, Masahiro Yamada, Mathieu Malaterre, Matteo Croce, Meelis
Roos, Michael W. Bringmann, Nathan Chancellor, Nathan Fontenot,
Nicholas Piggin, Nick Desaulniers, Nicolai Stange, Oliver O'Halloran,
Paul Mackerras, Peter Xu, PrasannaKumar Muralidharan, Qian Cai,
Rashmica Gupta, Reza Arbab, Robert P. J. Day, Russell Currey,
Sabyasachi Gupta, Sam Bobroff, Sandipan Das, Sergey Senozhatsky,
Souptick Joarder, Stewart Smith, Tyrel Datwyler, Vaibhav Jain,
YueHaibing"
* tag 'powerpc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (200 commits)
powerpc/32: Clear on-stack exception marker upon exception return
powerpc: Remove export of save_stack_trace_tsk_reliable()
powerpc/mm: fix "section_base" set but not used
powerpc/mm: Fix "sz" set but not used warning
powerpc/mm: Check secondary hash page table
powerpc: remove nargs from __SYSCALL
powerpc/64s: Fix unrelocated interrupt trampoline address test
powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables
powerpc/fsl: Fix the flush of branch predictor.
powerpc/powernv: Make opal log only readable by root
powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
powerpc/powernv: move OPAL call wrapper tracing and interrupt handling to C
powerpc/64s: Fix data interrupts vs d-side MCE reentrancy
powerpc/64s: Prepare to handle data interrupts vs d-side MCE reentrancy
powerpc/64s: system reset interrupt preserve HSRRs
powerpc/64s: Fix HV NMI vs HV interrupt recoverability test
powerpc/mm/hash: Handle mmap_min_addr correctly in get_unmapped_area topdown search
powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback
selftests/powerpc: Remove duplicate header
powerpc sstep: Add support for modsd, modud instructions
...
This contains the vast majority of the RISC-V patches for this merge
window. It includes:
* A handful of cleanups to our kernel prints, most of which are things I
should have caught the first time.
* We now provide an HWCAP that contains the ISA extensions that all
enabled processors support, as supposed to just looking at the first
enabled processor.
* We no longer spin forever waiting for all harts to boot.
* A fixmap implementation, which is coupled to some cleanups in our MM
code.
The only outstanding patches I know of right now are Vincent Chen's
patches to fix c.ebreak handling in the kernel, the v2 of which was
posted this morning. I'd like those in the MW, but I didn't want to
hold up everything else. The patch set is based on top of my last fixes
submission, but I've tested it with a conflict-free merge from v5.0.
I'm doing this rather than my "just go rebase everything" flow due to a
discussion with Linus, but if I misunderstood then just let me know and
I'll do something else. It's also the first time I've taken a PR into
my own tree, so let me know if I screwed that one up.
I've used my standard testing flow (QEMU in Fedora), but now that we're
starting to get the kernel in better shape I think it's time to impose
some more testing here -- specifically I'm going to require that patches
boot on the HiFive Unleashed because we're getting to the point where we
can actually expect that to work. I haven't done that for this tag, but
I'm going to do it for future ones.
I know the board is a bit expensive and not everyone has one, but if
I've sent you a free one and your patches break the boot then I'm going
to yell at you :). If you don't have one then please indicate how you
tested in your cover letter, and if you have a board then please add
your Tested-by to patches if they work for your testing flow.
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Merge tag 'riscv-for-linus-5.1-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux
Pull RISC-V updates from Palmer Dabbelt:
"This contains the vast majority of the RISC-V patches for this merge
window. It includes:
- A handful of cleanups to our kernel prints, most of which are
things I should have caught the first time.
- We now provide an HWCAP that contains the ISA extensions that all
enabled processors support, as supposed to just looking at the
first enabled processor.
- We no longer spin forever waiting for all harts to boot.
- A fixmap implementation, which is coupled to some cleanups in our
MM code.
The only outstanding patches I know of right now are Vincent Chen's
patches to fix c.ebreak handling in the kernel, the v2 of which was
posted this morning. I'd like those in the MW, but I didn't want to
hold up everything else. The patch set is based on top of my last
fixes submission, but I've tested it with a conflict-free merge from
v5.0. I'm doing this rather than my "just go rebase everything" flow
due to a discussion with Linus, but if I misunderstood then just let
me know and I'll do something else. It's also the first time I've
taken a PR into my own tree, so let me know if I screwed that one up.
I've used my standard testing flow (QEMU in Fedora), but now that
we're starting to get the kernel in better shape I think it's time to
impose some more testing here -- specifically I'm going to require
that patches boot on the HiFive Unleashed because we're getting to the
point where we can actually expect that to work. I haven't done that
for this tag, but I'm going to do it for future ones.
I know the board is a bit expensive and not everyone has one, but if
I've sent you a free one and your patches break the boot then I'm
going to yell at you :). If you don't have one then please indicate
how you tested in your cover letter, and if you have a board then
please add your Tested-by to patches if they work for your testing
flow"
* tag 'riscv-for-linus-5.1-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
arch: riscv: fix logic error in parse_dtb
RISC-V: Assign hwcap as per comman capabilities.
RISC-V: Compare cpuid with NR_CPUS before mapping.
RISC-V: Allow hartid-to-cpuid function to fail.
RISC-V: Remove NR_CPUs check during hartid search from DT
RISC-V: Move cpuid to hartid mapping to SMP.
RISC-V: Do not wait indefinitely in __cpu_up
RISC-V: Free-up initrd in free_initrd_mem()
RISC-V: Implement compile-time fixed mappings
RISC-V: Move setup_vm() to mm/init.c
RISC-V: Move setup_bootmem() to mm/init.c
RISC-V: Setup init_mm before parse_early_param()
riscv: remove the HAVE_KPROBES option
riscv: use for_each_of_cpu_node iterator
riscv: treat cpu devicetree nodes without status as enabled
riscv: fix riscv_of_processor_hartid() comment
riscv: use pr_info and friends
riscv: add missing newlines to printk messages
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Merge tag 'audit-pr-20190305' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"A lucky 13 audit patches for v5.1.
Despite the rather large diffstat, most of the changes are from two
bug fix patches that move code from one Kconfig option to another.
Beyond that bit of churn, the remaining changes are largely cleanups
and bug-fixes as we slowly march towards container auditing. It isn't
all boring though, we do have a couple of new things: file
capabilities v3 support, and expanded support for filtering on
filesystems to solve problems with remote filesystems.
All changes pass the audit-testsuite. Please merge for v5.1"
* tag 'audit-pr-20190305' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: mark expected switch fall-through
audit: hide auditsc_get_stamp and audit_serial prototypes
audit: join tty records to their syscall
audit: remove audit_context when CONFIG_ AUDIT and not AUDITSYSCALL
audit: remove unused actx param from audit_rule_match
audit: ignore fcaps on umount
audit: clean up AUDITSYSCALL prototypes and stubs
audit: more filter PATH records keyed on filesystem magic
audit: add support for fcaps v3
audit: move loginuid and sessionid from CONFIG_AUDITSYSCALL to CONFIG_AUDIT
audit: add syscall information to CONFIG_CHANGE records
audit: hand taken context to audit_kill_trees for syscall logging
audit: give a clue what CONFIG_CHANGE op was involved
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Merge tag 'selinux-pr-20190305' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux updates from Paul Moore:
"Nine SELinux patches for v5.1, all bug fixes.
As far as I'm concerned, nothing really jumps out as risky or special
to me, but each commit has a decent description so you can judge for
yourself. As usual, everything passes the selinux-testsuite; please
merge for v5.1"
* tag 'selinux-pr-20190305' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix avc audit messages
selinux: replace BUG_ONs with WARN_ONs in avc.c
selinux: log invalid contexts in AVCs
selinux: replace some BUG_ON()s with a WARN_ON()
selinux: inline some AVC functions used only once
selinux: do not override context on context mounts
selinux: never allow relabeling on context mounts
selinux: stop passing MAY_NOT_BLOCK to the AVC upon follow_link
selinux: avoid silent denials in permissive mode under RCU walk
Pull security subsystem updates from James Morris:
- Extend LSM stacking to allow sharing of cred, file, ipc, inode, and
task blobs. This paves the way for more full-featured LSMs to be
merged, and is specifically aimed at LandLock and SARA LSMs. This
work is from Casey and Kees.
- There's a new LSM from Micah Morton: "SafeSetID gates the setid
family of syscalls to restrict UID/GID transitions from a given
UID/GID to only those approved by a system-wide whitelist." This
feature is currently shipping in ChromeOS.
* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (62 commits)
keys: fix missing __user in KEYCTL_PKEY_QUERY
LSM: Update list of SECURITYFS users in Kconfig
LSM: Ignore "security=" when "lsm=" is specified
LSM: Update function documentation for cap_capable
security: mark expected switch fall-throughs and add a missing break
tomoyo: Bump version.
LSM: fix return value check in safesetid_init_securityfs()
LSM: SafeSetID: add selftest
LSM: SafeSetID: remove unused include
LSM: SafeSetID: 'depend' on CONFIG_SECURITY
LSM: Add 'name' field for SafeSetID in DEFINE_LSM
LSM: add SafeSetID module that gates setid calls
LSM: add SafeSetID module that gates setid calls
tomoyo: Allow multiple use_group lines.
tomoyo: Coding style fix.
tomoyo: Swicth from cred->security to task_struct->security.
security: keys: annotate implicit fall throughs
security: keys: annotate implicit fall throughs
security: keys: annotate implicit fall through
capabilities:: annotate implicit fall through
...
Pull workqueue updates from Tejun Heo:
"All trivial. Two comment updates and one more initialization sanity
check in flush_work()"
* 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Fix spelling in source code comments
workqueue: fix typo in comment
workqueue: Try to catch flush_work() without INIT_WORK().
Pull percpu updates from Dennis Zhou:
"There are 2 minor changes to the percpu allocator this merge window:
- for loop condition that could be out of bounds on multi-socket UP
- cosmetic removal of pcpu_group_offsets[0] in UP code as it is 0
There has been an interest in having better alignment with percpu
allocations. This has caused a performance regression in at least one
reported workload. I have a series out which adds scan hints to the
allocator as well as some other performance oriented changes. I hope
to have this queued for v5.2 soon"
* 'for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: km: no need to consider pcpu_group_offsets[0]
percpu: use nr_groups as check condition
A small fix Pavel sent me back in august was accidentally lost due to it
being placed with some other patches that failed some tests, and was rebased
out of my local tree. Which was a regression that caused event filters
not to handle negative numbers.
The clean up is from Masami that realized that the code in kprobes that
calls probe_mem_read() wrapper, which is to be used in code used by both
kprobes and uprobes, was only in code for kprobes. It should not use the
wrapper there, but instead call probe_kernel_read() directly.
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Merge tag 'trace-v5.0-pre' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix/cleanup from Steven Rostedt:
"This is a "pre-pull". It's only one small fix and one small clean up.
I'm testing a few small patches for my real pull request which will
come at a later time. The second patch depends on your tree anyway so
I included it along with the urgent fix.
A small fix Pavel sent me back in august was accidentally lost due to
it being placed with some other patches that failed some tests, and
was rebased out of my local tree. Which was a regression that caused
event filters not to handle negative numbers.
The clean up is from Masami that realized that the code in kprobes
that calls probe_mem_read() wrapper, which is to be used in code used
by both kprobes and uprobes, was only in code for kprobes. It should
not use the wrapper there, but instead call probe_kernel_read()
directly"
* tag 'trace-v5.0-pre' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/kprobes: Use probe_kernel_read instead of probe_mem_read
tracing: Fix event filters and triggers to handle negative numbers
- Fix online fsck to handle inode btrees correctly on 64k block
filesystems.
- Teach online fsck to check directory and attribute names for invalid
characters.
- Miscellanous fixes for online fsck.
- Introduce a new panic mask so that we can halt immediately on
metadata corruption (for debugging purposes)
- Fix a block mapping race during writeback.
- Cache unlinked inode list backrefs in memory to speed up list
processing.
- Separate the bnobt/cntbt and inobt/finobt buffer verifiers so that we
can detect crosslinked btrees.
- Refactor magic number verification so that we can standardize it.
- Strengthen ondisk metadata structure offset build time verification.
- Fix a memory corruption problem in the listxattr code.
- Fix a shutdown problem during log recovery due to unreserved finobt
expansion.
- Fix a referential integrity problem where O_TMPFILE inodes were put on
the unlinked list with nlink > 0 which would cause asserts during log
recovery if the system went down immediately.
- Refactor the delayed allocation allocator to be more clever about the
possibility that its mapping might be stale.
- Various fixes to the copy on write mechanism.
- Make CoW preallocation suitable for use even with writes that wouldn't
otherwise require it.
- Refactor an internal API.
- Fix some statx implementation bugs.
- Fix miscellaneous compiler and static checker complaints.
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Merge tag 'xfs-5.1-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Darrick Wong:
"Here are a number of new features and bug fixes for 5.1
They've undergone a week's worth of fstesting and merge cleanly with
master as of this morning
Most of the changes center on improving metadata validation and fixing
problems with online fsck, though there's also a new cache to speed up
unlinked inode handling and cleanup of the copy on write code in
preparation for future features
Changes for Linux 5.1:
- Fix online fsck to handle inode btrees correctly on 64k block
filesystems
- Teach online fsck to check directory and attribute names for
invalid characters
- Miscellanous fixes for online fsck
- Introduce a new panic mask so that we can halt immediately on
metadata corruption (for debugging purposes)
- Fix a block mapping race during writeback
- Cache unlinked inode list backrefs in memory to speed up list
processing
- Separate the bnobt/cntbt and inobt/finobt buffer verifiers so that
we can detect crosslinked btrees
- Refactor magic number verification so that we can standardize it
- Strengthen ondisk metadata structure offset build time verification
- Fix a memory corruption problem in the listxattr code
- Fix a shutdown problem during log recovery due to unreserved finobt
expansion
- Fix a referential integrity problem where O_TMPFILE inodes were put
on the unlinked list with nlink > 0 which would cause asserts
during log recovery if the system went down immediately
- Refactor the delayed allocation allocator to be more clever about
the possibility that its mapping might be stale
- Various fixes to the copy on write mechanism
- Make CoW preallocation suitable for use even with writes that
wouldn't otherwise require it
- Refactor an internal API
- Fix some statx implementation bugs
- Fix miscellaneous compiler and static checker complaints"
* tag 'xfs-5.1-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (70 commits)
xfs: fix reporting supported extra file attributes for statx()
xfs: fix backwards endian conversion in scrub
xfs: fix uninitialized error variables
xfs: rework breaking of shared extents in xfs_file_iomap_begin
xfs: don't pass iomap flags to xfs_reflink_allocate_cow
xfs: fix uninitialized error variable
xfs: introduce an always_cow mode
xfs: report IOMAP_F_SHARED from xfs_file_iomap_begin_delay
xfs: make COW fork unwritten extent conversions more robust
xfs: merge COW handling into xfs_file_iomap_begin_delay
xfs: also truncate holes covered by COW blocks
xfs: don't use delalloc extents for COW on files with extsize hints
xfs: fix SEEK_DATA for speculative COW fork preallocation
xfs: make xfs_bmbt_to_iomap more useful
xfs: fix xfs_buf magic number endian checks
xfs: retry COW fork delalloc conversion when no extent was found
xfs: remove the truncate short cut in xfs_map_blocks
xfs: move xfs_iomap_write_allocate to xfs_aops.c
xfs: move stat accounting to xfs_bmapi_convert_delalloc
xfs: move transaction handling to xfs_bmapi_convert_delalloc
..
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Merge tag 'for-5.1-part1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"This contains usual mix of new features, core changes and fixes; full
list below. I'm planning second pull request, with a few more fixes
that arrived recently but too close to merge window, will send it next
week.
New features:
- support zstd compression levels
- new ioctl to unregister a device from the module (ie. reverse of
device scan)
- scrub prints a message to log when it's about to start or finish
Core changes:
- qgroups can now skip part of a tree that does not get updated
during relocation, because this does not affect the quota
accounting, estimated speedup in run time is about 20%
- the compression workspace management had to be enhanced due to zstd
requirements
- various enospc fixes, when there's high fragmentation the
over-reservation can cause ENOSPC that might not happen after a
flush, in such cases try to wait if the situation improves
Fixes:
- various ioctls could overwrite previous return value if
copy_to_user fails, fix this so the original error is reported
- more reclaim vs GFP_KERNEL fixes
- other cleanups and refactoring
- fix a (valid) lockdep warning in a test when device replace is
destroying worker threads
- make qgroup async transaction commit more aggressive, this avoids
some 'quota limit reached' errors if there are not enough data to
trigger transaction in order to flush
- fix deadlock between snapshot deletion and quotas when backref
walking is called from context that already holds the same locks
- fsync fixes:
- fix fsync after succession of renames of different files
- fix fsync after succession of renames and unlink/rmdir"
* tag 'for-5.1-part1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (92 commits)
btrfs: Remove unnecessary casts in btrfs_read_root_item
Btrfs: remove assertion when searching for a key in a node/leaf
Btrfs: add missing error handling after doing leaf/node binary search
btrfs: drop the lock on error in btrfs_dev_replace_cancel
btrfs: ensure that a DUP or RAID1 block group has exactly two stripes
btrfs: init csum_list before possible free
Btrfs: remove no longer needed range length checks for deduplication
Btrfs: fix fsync after succession of renames and unlink/rmdir
Btrfs: fix fsync after succession of renames of different files
btrfs: honor path->skip_locking in backref code
btrfs: qgroup: Make qgroup async transaction commit more aggressive
btrfs: qgroup: Move reserved data accounting from btrfs_delayed_ref_head to btrfs_qgroup_extent_record
btrfs: scrub: remove unused nocow worker pointer
btrfs: scrub: add assertions for worker pointers
btrfs: scrub: convert scrub_workers_refcnt to refcount_t
btrfs: scrub: add scrub_lock lockdep check in scrub_workers_get
btrfs: scrub: fix circular locking dependency warning
btrfs: fix comment its device list mutex not volume lock
btrfs: extent_io: Kill the forward declaration of flush_write_bio
btrfs: Fix grossly misleading argument names in extent io search
...
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Merge tag 'fsnotify_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fanotify updates from Jan Kara:
"Support for fanotify directory events and changes to make waiting for
fanotify permission event response killable"
* tag 'fsnotify_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (25 commits)
fanotify: Make waits for fanotify events only killable
fanotify: Use interruptible wait when waiting for permission events
fanotify: Track permission event state
fanotify: Simplify cleaning of access_list
fsnotify: Create function to remove event from notification list
fanotify: Move locking inside get_one_event()
fanotify: Fold dequeue_event() into process_access_response()
fanotify: Select EXPORTFS
fanotify: report FAN_ONDIR to listener with FAN_REPORT_FID
fanotify: add support for create/attrib/move/delete events
fanotify: support events with data type FSNOTIFY_EVENT_INODE
fanotify: check FS_ISDIR flag instead of d_is_dir()
fsnotify: report FS_ISDIR flag with MOVE_SELF and DELETE_SELF events
fanotify: use vfs_get_fsid() helper instead of vfs_statfs()
vfs: add vfs_get_fsid() helper
fanotify: cache fsid in fsnotify_mark_connector
fanotify: enable FAN_REPORT_FID init flag
fanotify: copy event fid info to user
fanotify: encode file identifier for FAN_REPORT_FID
fanotify: open code fill_event_metadata()
...
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Merge tag 'fs_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2 and udf fixes from Jan Kara:
"A couple of fixes for udf and ext2. Namely:
- fix making ext2 mountable (again) with 64k blocksize
- fix for ext2 statx(2) handling
- fix for udf handling of corrupted filesystem so that it doesn't get
corrupted even further
- couple smaller ext2 and udf cleanups"
* tag 'fs_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Drop pointless check from udf_sync_fs()
ext2: support statx syscall
udf: disallow RW mount without valid integrity descriptor
udf: finalize integrity descriptor before writeback
udf: factor out LVID finalization for reuse
ext2: Fix underflow in ext2_max_size()
ext2: Fix a typo in comment
ext2: Remove redundant check for finding no group
ext2: Annotate implicit fall through in __ext2_truncate_blocks
ext2: Set superblock revision when enabling xattr feature
ext2: Remove redundant check on s_inode_size
ext2: set proper return code
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Merge tag 'dtype_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull dtype handling cleanups from Jan Kara:
"A reworked dtype cleanup patches based on your feedback to the
previous version of these.
Again the series includes only the generic code and ext2 cleanup as a
sample. The plan is to push cleanups for other filesystems separately
through respective trees once the generic code lands to reduce the
number of conflicts"
* tag 'dtype_for_v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
ext2: use common file type conversion
fs: common implementation of file type
Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Steve French <stfrench@microsoft.com>
Here is the big USB/PHY driver pull request for 5.1-rc1.
The usual set of gadget driver updates, phy driver updates (you will
have a merge issue with Kconfig and Makefile), xhci updates, and typec
additions. Also included in here are a lot of small cleanups and fixes
and driver updates where needed.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB/PHY driver pull request for 5.1-rc1.
The usual set of gadget driver updates, phy driver updates, xhci
updates, and typec additions. Also included in here are a lot of small
cleanups and fixes and driver updates where needed.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits)
wusb: Remove unnecessary static function ckhdid_printf
usb: core: make default autosuspend delay configurable
usb: core: Fix typo in description of "authorized_default"
usb: chipidea: Refactor USB PHY selection and keep a single PHY
usb: chipidea: Grab the (legacy) USB PHY by phandle first
usb: chipidea: imx: set power polarity
dt-bindings: usb: ci-hdrc-usb2: add property power-active-high
usb: chipidea: imx: remove unused header files
usb: chipidea: tegra: Fix missed ci_hdrc_remove_device()
usb: core: add option of only authorizing internal devices
usb: typec: tps6598x: handle block writes separately with plain-I2C adapters
usb: xhci: Fix for Enabling USB ROLE SWITCH QUIRK on INTEL_SUNRISEPOINT_LP_XHCI
usb: xhci: fix build warning - missing prototype
usb: xhci: dbc: Fixing typo error.
usb: xhci: remove unused member 'parent' in xhci_regset struct
xhci: tegra: Prevent error pointer dereference
USB: serial: option: add Telit ME910 ECM composition
usb: core: Replace hardcoded check with inline function from usb.h
usb: core: skip interfaces disabled in devicetree
usb: typec: mux: remove redundant check on variable match
...
Here is the "big" patchset for the tty/serial driver layer for 5.1-rc1.
It's really not all that big, nothing major here.
There are a lot of tiny driver fixes and updates, combined with other
cleanups for different serial drivers and the vt layer. Full details
are in the shortlog.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here is the "big" patchset for the tty/serial driver layer for
5.1-rc1.
It's really not all that big, nothing major here.
There are a lot of tiny driver fixes and updates, combined with other
cleanups for different serial drivers and the vt layer. Full details
are in the shortlog.
All of these have been in linux-next with no reported issues"
* tag 'tty-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (70 commits)
tty: xilinx_uartps: Correct return value in probe
serial: sprd: Modify the baud rate calculation formula
dt-bindings: serial: Add Milbeaut serial driver description
serial: 8250_of: assume reg-shift of 2 for mrvl,mmp-uart
serial: 8250_pxa: honor the port number from devicetree
tty: hvc_xen: Mark expected switch fall-through
tty: n_gsm: Mark expected switch fall-throughs
tty: serial: msm_serial: Remove __init from msm_console_setup()
tty: serial: samsung: Enable baud clock during initialisation
serial: uartps: Fix stuck ISR if RX disabled with non-empty FIFO
tty: serial: remove redundant likely annotation
tty/n_hdlc: mark expected switch fall-through
serial: 8250_pci: Have ACCES cards that use the four port Pericom PI7C9X7954 chip use the pci_pericom_setup()
serial: 8250_pci: Fix number of ports for ACCES serial cards
vt: perform safe console erase in the right order
tty/nozomi: use pci_iomap instead of ioremap_nocache
tty/synclink: remove ISA support
serial: 8250_pci: Replace custom code with pci_match_id()
serial: max310x: Correction of the initial setting of the MODE1 bits for various supported ICs.
serial: mps2-uart: Add parentheses around conditional in mps2_uart_shutdown
...
Rasmus Villemoes