I'm seeing a bunch of debug prints from a user of print_hex_dump_bytes()
in my kernel logs, but I don't have CONFIG_DYNAMIC_DEBUG enabled nor do I
have DEBUG defined in my build. The problem is that
print_hex_dump_bytes() calls a wrapper function in lib/hexdump.c that
calls print_hex_dump() with KERN_DEBUG level. There are three cases to
consider here
1. CONFIG_DYNAMIC_DEBUG=y --> call dynamic_hex_dum()
2. CONFIG_DYNAMIC_DEBUG=n && DEBUG --> call print_hex_dump()
3. CONFIG_DYNAMIC_DEBUG=n && !DEBUG --> stub it out
Right now, that last case isn't detected and we still call
print_hex_dump() from the stub wrapper.
Let's make print_hex_dump_bytes() only call print_hex_dump_debug() so that
it works properly in all cases.
Case #1, print_hex_dump_debug() calls dynamic_hex_dump() and we get same
behavior. Case #2, print_hex_dump_debug() calls print_hex_dump() with
KERN_DEBUG and we get the same behavior. Case #3, print_hex_dump_debug()
is a nop, changing behavior to what we want, i.e. print nothing.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
When building with W=1, a number of warnings are issued:
CC lib/extable.o
lib/extable.c:63:6: warning: no previous prototype for 'sort_extable' [-Wmissing-prototypes]
63 | void sort_extable(struct exception_table_entry *start,
| ^~~~~~~~~~~~
lib/extable.c:75:6: warning: no previous prototype for 'trim_init_extable' [-Wmissing-prototypes]
75 | void trim_init_extable(struct module *m)
| ^~~~~~~~~~~~~~~~~
lib/extable.c:115:1: warning: no previous prototype for 'search_extable' [-Wmissing-prototypes]
115 | search_extable(const struct exception_table_entry *base,
| ^~~~~~~~~~~~~~
Add the missing #include for the prototypes.
Link: http://lkml.kernel.org/r/45574.1565235784@turing-police
Signed-off-by: Valdis Kletnieks <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
When building with W=1, we get some warnings:
l CC lib/generic-radix-tree.o
lib/generic-radix-tree.c:39:10: warning: no previous prototype for 'genradix_root_to_depth' [-Wmissing-prototypes]
39 | unsigned genradix_root_to_depth(struct genradix_root *r)
| ^~~~~~~~~~~~~~~~~~~~~~
lib/generic-radix-tree.c:44:23: warning: no previous prototype for 'genradix_root_to_node' [-Wmissing-prototypes]
44 | struct genradix_node *genradix_root_to_node(struct genradix_root *r)
| ^~~~~~~~~~~~~~~~~~~~~
They're not used anywhere else, so make them static inline.
Link: http://lkml.kernel.org/r/46923.1565236485@turing-police
Signed-off-by: Valdis Kletnieks <[email protected]>
Cc: Kent Overstreet <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
There are many of those warnings.
In file included from ./arch/powerpc/include/asm/paca.h:15,
from ./arch/powerpc/include/asm/current.h:13,
from ./include/linux/thread_info.h:21,
from ./include/asm-generic/preempt.h:5,
from ./arch/powerpc/include/generated/asm/preempt.h:1,
from ./include/linux/preempt.h:78,
from ./include/linux/spinlock.h:51,
from fs/fs-writeback.c:19:
In function 'strncpy',
inlined from 'perf_trace_writeback_page_template' at
./include/trace/events/writeback.h:56:1:
./include/linux/string.h:260:9: warning: '__builtin_strncpy' specified
bound 32 equals destination size [-Wstringop-truncation]
return __builtin_strncpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix it by using the new strscpy_pad() which was introduced in "lib/string:
Add strscpy_pad() function" and will always be NUL-terminated instead of
strncpy(). Also, change strlcpy() to use strscpy_pad() in this file for
consistency.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 455b286468 ("writeback: Initial tracing support")
Fixes: 028c2dd184 ("writeback: Add tracing to balance_dirty_pages")
Fixes: e84d0a4f8e ("writeback: trace event writeback_queue_io")
Fixes: b48c104d22 ("writeback: trace event bdi_dirty_ratelimit")
Fixes: cc1676d917 ("writeback: Move requeueing when I_SYNC set to writeback_sb_inodes()")
Fixes: 9fb0a7da0c ("writeback: add more tracepoints")
Signed-off-by: Qian Cai <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Cc: Tobin C. Harding <[email protected]>
Cc: Steven Rostedt (VMware) <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Fengguang Wu <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Nitin Gote <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Stephen Kitt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Change the definition of the RBCOMPUTE function. The propagate callback
repeatedly calls RBCOMPUTE as it moves from leaf to root. it wants to
stop recomputing once the augmented subtree information doesn't change.
This was previously checked using the == operator, but that only works
when the augmented subtree information is a scalar field. This commit
modifies the RBCOMPUTE function so that it now sets the augmented subtree
information instead of returning it, and returns a boolean value
indicating if the propagate callback should stop.
The motivation for this change is that I want to introduce augmented
rbtree uses where the augmented data for the subtree is a struct instead
of a scalar.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michel Lespinasse <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: David Howells <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Uladzislau Rezki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Patch series "make RB_DECLARE_CALLBACKS more generic", v3.
These changes are intended to make the RB_DECLARE_CALLBACKS macro more
generic (allowing the aubmented subtree information to be a struct instead
of a scalar).
I have verified the compiled lib/interval_tree.o and mm/mmap.o files to
check that they didn't change. This held as expected for interval_tree.o;
mmap.o did have some changes which could be reverted by marking
__vma_link_rb as noinline. I did not add such a change to the patchset; I
felt it was reasonable enough to leave the inlining decision up to the
compiler.
This patch (of 3):
Add a short comment summarizing the arguments to RB_DECLARE_CALLBACKS.
The arguments are also now capitalized. This copies the style of the
INTERVAL_TREE_DEFINE macro.
No functional changes in this commit, only comments and capitalization.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michel Lespinasse <[email protected]>
Acked-by: Davidlohr Bueso <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: David Howells <[email protected]>
Cc: Uladzislau Rezki <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
As was already noted in rbtree.h, the logic to cache rb_first (or
rb_last) can easily be implemented externally to the core rbtree api.
This commit takes the changes applied to the include/linux/ and lib/
rbtree files in 9f973cb380 ("lib/rbtree: avoid generating code twice
for the cached versions"), and applies these to the
tools/include/linux/ and tools/lib/ files as well to keep them
synchronized.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michel Lespinasse <[email protected]>
Cc: David Howells <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
When building with W=1, gcc properly complains that there's no prototypes:
CC kernel/elfcore.o
kernel/elfcore.c:7:17: warning: no previous prototype for 'elf_core_extra_phdrs' [-Wmissing-prototypes]
7 | Elf_Half __weak elf_core_extra_phdrs(void)
| ^~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:12:12: warning: no previous prototype for 'elf_core_write_extra_phdrs' [-Wmissing-prototypes]
12 | int __weak elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:17:12: warning: no previous prototype for 'elf_core_write_extra_data' [-Wmissing-prototypes]
17 | int __weak elf_core_write_extra_data(struct coredump_params *cprm)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
kernel/elfcore.c:22:15: warning: no previous prototype for 'elf_core_extra_data_size' [-Wmissing-prototypes]
22 | size_t __weak elf_core_extra_data_size(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~
Provide the include file so gcc is happy, and we don't have potential code drift
Link: http://lkml.kernel.org/r/29875.1565224705@turing-police
Signed-off-by: Valdis Kletnieks <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
- Some cleanups and fixes in the self-refresh helpers
- Some cleanups and fixes in the atomic helpers
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Merge tag 'drm-misc-next-fixes-2019-09-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
- Multiple panfrost fixes for regulator support and page fault handling
- Some cleanups and fixes in the self-refresh helpers
- Some cleanups and fixes in the atomic helpers
Signed-off-by: Dave Airlie <[email protected]>
From: Maxime Ripard <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/20190923160946.nvaqiw5j7fpcdhc7@gilmour
In dcn*_create_resource_pool the allocated memory should be released if
construct pool fails.
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Navid Emamdoost <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
They go on accumulating there like the debug.h one, that was introduced
here:
f23610245c ("perf list: Add debug support for outputing alias string")
But then, when that need is removed via:
2073ad3326 ("perf tools: Factor out PMU matching in parser")
The thing stays there, so continue the house cleaning spree...
list.h not needed, no macros from there are used, and 'struct
list_head' is in linux/types.h, ditto for util.h, no need for that as
well.
Cc: Adrian Hunter <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
With Java 11 there is no seperate JRE anymore.
Details:
https://coderanch.com/t/701603/java/JRE-JDK
Therefore the detection of the JRE needs to be adapted.
This change works for s390 and x86. I have not tested other platforms.
Committer testing:
Continues to work with the OpenJDK 8:
$ rm -f ~acme/lib64/libperf-jvmti.so
$ rpm -qa | grep jdk-devel
java-1.8.0-openjdk-devel-1.8.0.222.b10-0.fc30.x86_64
$ git log --oneline -1
a51937170f33 (HEAD -> perf/core) perf build: Add detection of java-11-openjdk-devel package
$ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf ; make -C tools/perf O=/tmp/build/perf install > /dev/null 2>1
$ ls -la ~acme/lib64/libperf-jvmti.so
-rwxr-xr-x. 1 acme acme 230744 Sep 24 16:46 /home/acme/lib64/libperf-jvmti.so
$
Suggested-by: Andreas Krebbel <[email protected]>
Signed-off-by: Thomas Richter <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Hendrik Brueckner <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
I'm not fully sure if this is the correct fix, but without this I get
crashes on more complex perf stat metric usages. The problem is that
part of the state gets freed when a weak group fails, but then is later
still used. Just don't free the ids, we're going to reuse them anyways
on the weak group retry.
For example:
% perf stat -M IpB,IpCall,IpTB,IPC,Retiring_SMT,Frontend_Bound_SMT,Kernel_Utilization,CPU_Utilization --metric-only -a -I 1000 sleep 2
crashes and gives in valgrind:
=21527== Invalid write of size 8
==21527== at 0x4EE582: hlist_add_head (list.h:644)
==21527== by 0x4EFD3C: perf_evlist__id_hash (evlist.c:477)
==21527== by 0x4EFD99: perf_evlist__id_add (evlist.c:483)
==21527== by 0x4EFF15: perf_evlist__id_add_fd (evlist.c:524)
==21527== by 0x4FC693: store_evsel_ids (evsel.c:2969)
==21527== by 0x4FC76C: perf_evsel__store_ids (evsel.c:2986)
==21527== by 0x450DA7: __run_perf_stat (builtin-stat.c:519)
==21527== by 0x451285: run_perf_stat (builtin-stat.c:636)
==21527== by 0x454619: cmd_stat (builtin-stat.c:1966)
==21527== by 0x4D557D: run_builtin (perf.c:310)
==21527== by 0x4D57EA: handle_internal_command (perf.c:362)
==21527== by 0x4D5931: run_argv (perf.c:406)
==21527== Address 0x12e3f008 is 104 bytes inside a block of size 2,056 free'd
==21527== at 0x4839A0C: free (vg_replace_malloc.c:540)
==21527== by 0x627139: xyarray__delete (xyarray.c:32)
==21527== by 0x4F6BE4: perf_evsel__free_id (evsel.c:1253)
==21527== by 0x4FA11F: evsel__close (evsel.c:1994)
==21527== by 0x4F30A3: perf_evlist__reset_weak_group (evlist.c:1783)
==21527== by 0x450B47: __run_perf_stat (builtin-stat.c:466)
==21527== by 0x451285: run_perf_stat (builtin-stat.c:636)
==21527== by 0x454619: cmd_stat (builtin-stat.c:1966)
==21527== by 0x4D557D: run_builtin (perf.c:310)
==21527== by 0x4D57EA: handle_internal_command (perf.c:362)
==21527== by 0x4D5931: run_argv (perf.c:406)
==21527== by 0x4D5CAE: main (perf.c:531)
==21527== Block was alloc'd at
==21527== at 0x483AB1A: calloc (vg_replace_malloc.c:762)
==21527== by 0x627024: zalloc (zalloc.c:8)
==21527== by 0x627088: xyarray__new (xyarray.c:10)
==21527== by 0x4F6B20: perf_evsel__alloc_id (evsel.c:1237)
==21527== by 0x4FC74E: perf_evsel__store_ids (evsel.c:2983)
==21527== by 0x450DA7: __run_perf_stat (builtin-stat.c:519)
==21527== by 0x451285: run_perf_stat (builtin-stat.c:636)
==21527== by 0x454619: cmd_stat (builtin-stat.c:1966)
==21527== by 0x4D557D: run_builtin (perf.c:310)
==21527== by 0x4D57EA: handle_internal_command (perf.c:362)
==21527== by 0x4D5931: run_argv (perf.c:406)
==21527== by 0x4D5CAE: main (perf.c:531)
Signed-off-by: Andi Kleen <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Make sure to not free the name passed in by the caller, but free all the
allocated ids when parsing expressions.
The loop at the end knows that the first entry shouldn't be freed, so
make sure the caller name is the first entry.
Fixes
% perf stat -M IpB,IpCall,IpTB,IPC,Retiring_SMT,Frontend_Bound_SMT,Kernel_Utilization,CPU_Utilization --metric-only -a -I 1000 sleep 2
valgrind:
1.009943231 ==21527== Invalid read of size 1
==21527== at 0x483CB74: strcmp (vg_replace_strmem.c:849)
==21527== by 0x582CF8: collect_all_aliases (stat-display.c:554)
==21527== by 0x582EB3: collect_data (stat-display.c:577)
==21527== by 0x583A32: print_counter_aggr (stat-display.c:806)
==21527== by 0x584FAD: perf_evlist__print_counters (stat-display.c:1200)
==21527== by 0x45133A: print_counters (builtin-stat.c:655)
==21527== by 0x450629: process_interval (builtin-stat.c:353)
==21527== by 0x450FBD: __run_perf_stat (builtin-stat.c:564)
==21527== by 0x451285: run_perf_stat (builtin-stat.c:636)
==21527== by 0x454619: cmd_stat (builtin-stat.c:1966)
==21527== by 0x4D557D: run_builtin (perf.c:310)
==21527== by 0x4D57EA: handle_internal_command (perf.c:362)
==21527== Address 0x12826cd0 is 0 bytes inside a block of size 25 free'd
==21527== at 0x4839A0C: free (vg_replace_malloc.c:540)
==21527== by 0x627041: __zfree (zalloc.c:13)
==21527== by 0x57F66A: generic_metric (stat-shadow.c:814)
==21527== by 0x580B21: perf_stat__print_shadow_stats (stat-shadow.c:1057)
==21527== by 0x58418E: print_metric_headers (stat-display.c:943)
==21527== by 0x5844BC: print_interval (stat-display.c:1004)
==21527== by 0x584DEB: perf_evlist__print_counters (stat-display.c:1172)
==21527== by 0x45133A: print_counters (builtin-stat.c:655)
==21527== by 0x450629: process_interval (builtin-stat.c:353)
==21527== by 0x450FBD: __run_perf_stat (builtin-stat.c:564)
==21527== by 0x451285: run_perf_stat (builtin-stat.c:636)
==21527== by 0x454619: cmd_stat (builtin-stat.c:1966)
==21527== Block was alloc'd at
==21527== at 0x483880B: malloc (vg_replace_malloc.c:309)
==21527== by 0x51677DE: strdup (in /usr/lib64/libc-2.29.so)
==21527== by 0x506457: parse_events_name (parse-events.c:1754)
==21527== by 0x5550BB: parse_events_parse (parse-events.y:214)
==21527== by 0x50694D: parse_events__scanner (parse-events.c:1887)
==21527== by 0x506AEF: parse_events (parse-events.c:1927)
==21527== by 0x521D8B: metricgroup__parse_groups (metricgroup.c:527)
==21527== by 0x45156F: parse_metric_groups (builtin-stat.c:721)
==21527== by 0x6228A9: get_value (parse-options.c:243)
==21527== by 0x62363F: parse_short_opt (parse-options.c:348)
==21527== by 0x62363F: parse_options_step (parse-options.c:536)
==21527== by 0x62363F: parse_options_subcommand (parse-options.c:651)
==21527== by 0x453C1D: cmd_stat (builtin-stat.c:1718)
==21527== by 0x4D557D: run_builtin (perf.c:310)
and also a leak report.
Committer testing:
Before:
# perf stat -M IpB,IpCall,IpTB,IPC,Retiring_SMT,Frontend_Bound_SMT,Kernel_Utilization,CPU_Utilization --metric-only -a -I 1000 sleep 2
# time CPU_Utilization
1.000470810 free(): double free detected in tcache 2
Aborted (core dumped)
#
After:
# perf stat -M IpB,IpCall,IpTB,IPC,Retiring_SMT,Frontend_Bound_SMT,Kernel_Utilization,CPU_Utilization --metric-only -a -I 1000 sleep 2
# time CPU_Utilization
1.000494752 0.1
2.001105112 0.1
#
Signed-off-by: Andi Kleen <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Ditch it, noone is using it, one more stdio.h include in a hot header.
Fix the fallout in parse-events.y, where we end up using a FILE pointer,
I think due to YYDEBUG being set and in some places, like Amazon Linux 1
we don't get stdio.h included by luck, like in most other places, add a
explicit stdio.h include directive.
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
We already had evsel_fprintf.c, add its counterpart, so that we can
reduce evsel.h a bit more.
We needed a new perf_event_attr_fprintf.c file so as to have a separate
object to link with the python binding in tools/perf/util/python-ext-sources
and not drag symbol_conf, etc into the python binding.
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
KVM was incorrectly checking vmcs12->host_ia32_efer even if the "load
IA32_EFER" exit control was reset. Also, some checks were not using
the new CC macro for tracing.
Cleanup everything so that the vCPU's 64-bit mode is determined
directly from EFER_LMA and the VMCS checks are based on that, which
matches section 26.2.4 of the SDM.
Cc: Sean Christopherson <[email protected]>
Cc: Krish Sadhukhan <[email protected]>
Fixes: 5845038c11
Reviewed-by: Jim Mattson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
- automatic recovery of a blacklisted filesystem session (Zheng Yan).
This is disabled by default and can be enabled by mounting with the
new "recover_session=clean" option.
- serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is
taken to avoid serializing O_DIRECT reads and writes with each other,
this is based on the exclusion scheme from NFS.
- handle large osdmaps better in the face of fragmented memory (myself)
- don't limit what security.* xattrs can be get or set (Jeff Layton).
We were overly restrictive here, unnecessarily preventing things like
file capability sets stored in security.capability from working.
- allow copy_file_range() within the same inode and across different
filesystems within the same cluster (Luis Henriques)
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Merge tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"The highlights are:
- automatic recovery of a blacklisted filesystem session (Zheng Yan).
This is disabled by default and can be enabled by mounting with the
new "recover_session=clean" option.
- serialize buffered reads and O_DIRECT writes (Jeff Layton). Care is
taken to avoid serializing O_DIRECT reads and writes with each
other, this is based on the exclusion scheme from NFS.
- handle large osdmaps better in the face of fragmented memory
(myself)
- don't limit what security.* xattrs can be get or set (Jeff Layton).
We were overly restrictive here, unnecessarily preventing things
like file capability sets stored in security.capability from
working.
- allow copy_file_range() within the same inode and across different
filesystems within the same cluster (Luis Henriques)"
* tag 'ceph-for-5.4-rc1' of git://github.com/ceph/ceph-client: (41 commits)
ceph: call ceph_mdsc_destroy from destroy_fs_client
libceph: use ceph_kvmalloc() for osdmap arrays
libceph: avoid a __vmalloc() deadlock in ceph_kvmalloc()
ceph: allow object copies across different filesystems in the same cluster
ceph: include ceph_debug.h in cache.c
ceph: move static keyword to the front of declarations
rbd: pull rbd_img_request_create() dout out into the callers
ceph: reconnect connection if session hang in opening state
libceph: drop unused con parameter of calc_target()
ceph: use release_pages() directly
rbd: fix response length parameter for encoded strings
ceph: allow arbitrary security.* xattrs
ceph: only set CEPH_I_SEC_INITED if we got a MAC label
ceph: turn ceph_security_invalidate_secctx into static inline
ceph: add buffered/direct exclusionary locking for reads and writes
libceph: handle OSD op ceph_pagelist_append() errors
ceph: don't return a value from void function
ceph: don't freeze during write page faults
ceph: update the mtime when truncating up
ceph: fix indentation in __get_snap_name()
...
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Merge tag 'fuse-update-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
- Continue separating the transport (user/kernel communication) and the
filesystem layers of fuse. Getting rid of most layering violations
will allow for easier cleanup and optimization later on.
- Prepare for the addition of the virtio-fs filesystem. The actual
filesystem will be introduced by a separate pull request.
- Convert to new mount API.
- Various fixes, optimizations and cleanups.
* tag 'fuse-update-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (55 commits)
fuse: Make fuse_args_to_req static
fuse: fix memleak in cuse_channel_open
fuse: fix beyond-end-of-page access in fuse_parse_cache()
fuse: unexport fuse_put_request
fuse: kmemcg account fs data
fuse: on 64-bit store time in d_fsdata directly
fuse: fix missing unlock_page in fuse_writepage()
fuse: reserve byteswapped init opcodes
fuse: allow skipping control interface and forced unmount
fuse: dissociate DESTROY from fuseblk
fuse: delete dentry if timeout is zero
fuse: separate fuse device allocation and installation in fuse_conn
fuse: add fuse_iqueue_ops callbacks
fuse: extract fuse_fill_super_common()
fuse: export fuse_dequeue_forget() function
fuse: export fuse_get_unique()
fuse: export fuse_send_init_request()
fuse: export fuse_len_args()
fuse: export fuse_end_request()
fuse: fix request limit
...
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Merge tag 'tpmdd-next-20190925' of git://git.infradead.org/users/jjs/linux-tpmdd
Pull tpm fixes from Jarkko Sakkinen.
* tag 'tpmdd-next-20190925' of git://git.infradead.org/users/jjs/linux-tpmdd:
tpm: Wrap the buffer from the caller to tpm_buf in tpm_send()
MAINTAINERS: keys: Update path to trusted.h
KEYS: trusted: correctly initialize digests and fix locking issue
selftests/tpm2: Add log and *.pyc to .gitignore
selftests/tpm2: Add the missing TEST_FILES assignment
- Report both io errors and short io results to the directio endio
handler.
- Allow directio callers to pass an ops structure to iomap_dio_rw.
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Merge tag 'iomap-5.4-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"After last week's failed pull request attempt, I scuttled everything
in the branch except for the directio endio api changes, which were
trivial. Everything else will simply have to wait for the next cycle.
Summary:
- Report both io errors and short io results to the directio endio
handler.
- Allow directio callers to pass an ops structure to iomap_dio_rw"
* tag 'iomap-5.4-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: move the iomap_dio_rw ->end_io callback into a structure
iomap: split size and error for iomap_dio_rw ->end_io
The following was reported on i386:
arch/x86/kvm/vmx/vmx.c: In function 'hv_enable_direct_tlbflush':
arch/x86/kvm/vmx/vmx.c:503:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
pr_debugs() in this function are more or less useless, let's just
remove them. evmcs->hv_vm_id can use 'unsigned long' instead of 'u64'.
Also, simplify the code a little bit.
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Remove the kvm_rebooting check from VMX/SVM instruction exception fixup
now that kvm_spurious_fault() conditions its BUG() on !kvm_rebooting.
Because the 'cleanup_insn' functionally is also gone, deferring to
kvm_spurious_fault() means __kvm_handle_fault_on_reboot() can eliminate
its .fixup code entirely and have its exception table entry branch
directly to the call to kvm_spurious_fault().
Cc: Paolo Bonzini <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Remove the variation of __kvm_handle_fault_on_reboot() that accepts a
post-fault cleanup instruction now that its sole user (VMREAD) uses
a different method for handling faults.
Acked-by: Paolo Bonzini <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Now that VMREAD flows require a taken branch, courtesy of commit
3901336ed9 ("x86/kvm: Don't call kvm_spurious_fault() from .fixup")
bite the bullet and add full error handling to VMREAD, i.e. replace the
JMP added by __ex()/____kvm_handle_fault_on_reboot() with a hinted Jcc.
To minimize the code footprint, add a helper function, vmread_error(),
to handle both faults and failures so that the inline flow has a single
CALL.
Acked-by: Paolo Bonzini <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Rework the VMX instruction helpers using asm-goto to branch directly
to error/fault "handlers" in lieu of using __ex(), i.e. the generic
____kvm_handle_fault_on_reboot(). Branching directly to fault handling
code during fixup avoids the extra JMP that is inserted after every VMX
instruction when using the generic "fault on reboot" (see commit
3901336ed9, "x86/kvm: Don't call kvm_spurious_fault() from .fixup").
Opportunistically clean up the helpers so that they all have consistent
error handling and messages.
Leave the usage of ____kvm_handle_fault_on_reboot() (via __ex()) in
kvm_cpu_vmxoff() and nested_vmx_check_vmentry_hw() as is. The VMXOFF
case is not a fast path, i.e. the cleanliness of __ex() is worth the
JMP, and the extra JMP in nested_vmx_check_vmentry_hw() is unavoidable.
Note, VMREAD cannot get the asm-goto treatment as output operands aren't
compatible with GCC's asm-goto due to internal compiler restrictions.
Acked-by: Paolo Bonzini <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Explicitly check kvm_rebooting in kvm_spurious_fault() prior to invoking
BUG(), as opposed to assuming the caller has already done so. Letting
kvm_spurious_fault() be called "directly" will allow VMX to better
optimize its low level assembly flows.
As a happy side effect, kvm_spurious_fault() no longer needs to be
marked as a dead end since it doesn't unconditionally BUG().
Acked-by: Paolo Bonzini <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Signed-off-by: Sean Christopherson <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
After commit e8bb4755eea2("KVM: selftests: Split ucall.c into architecture
specific files") selftests which use ucall on x86 started segfaulting and
apparently it's gcc to blame: it "optimizes" ucall() function throwing away
va_start/va_end part because it thinks the structure is not being used.
Previously, it couldn't do that because the there was also MMIO version and
the decision which particular implementation to use was done at runtime.
With older gccs it's possible to solve the problem by adding 'volatile'
to 'struct ucall' but at least with gcc-8.3 this trick doesn't work.
'memory' clobber seems to do the job.
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
The sys/types.h header looks more sensible, from its name we can gather
it should be there because of some needed typedef, and it is much
smaller than unistd.h, so use it and fix up the fallout in places where
it was being used for something else entirely but being obtained by
sheer luck, indirectly.
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
That was done just to have users of writen() and readn(), that before
had their prototypes in util/util.h to get it without having to add an
include for internal/lib.h, but the right way is to add it and by now
all places already do it.
Fix a fallout were readlink() was used but unistd.h was being obtained
by luck thru util.h -> internal/lib.h, now to check why unistd.h is
being included there...
Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
We need the 'page_size' variable in libperf, so move it there.
Add a libperf_init() as a global libperf init function to obtain this
value via sysconf() at tool start.
Committer notes:
Add internal/lib.h to tools/perf/ files using 'page_size', sometimes
replacing util.h with it if that was the only reason for having util.h
included.
Signed-off-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
