04 Mar, 2017
23 commits
-
The -a/--all-cpus and -C/--cpu option is for controlling tracing cpus.
Signed-off-by: Namhyung Kim
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Peter Zijlstra
Cc: Steven Rostedt
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The cpu_map__snprint_mask() generates a string representation of a
cpumask bitmap. For cpu 0 to 11, it'll return "fff".Committer notes:
Fix compiler warning on some toolchains:
19 fedora:24-x-ARC-uClibc: FAIL
CC /tmp/build/perf/util/cpumap.o
util/cpumap.c: In function 'hex_char':
util/cpumap.c:679:2: error: comparison is always true due to limited range of data type [-Werror=type-limits]
if (0
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Peter Zijlstra
Cc: Steven Rostedt
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The -p (--pid) option enables to trace existing process by its pid.
Committer notes:
Testing it:
Using the function_graph tracer on a process that is just waiting for user
input and thus will make 'perf ftrace' sit there waiting for that, then press
any key on that mutt session and see what happens:# perf ftrace -t function_graph -p `pidof mutt` | head -40
2) 1.038 us | switch_mm_irqs_off();
------------------------------------------
2) -0 => mutt-3595
------------------------------------------2) | finish_task_switch() {
2) | smp_irq_work_interrupt() {
2) | irq_enter() {
2) 0.180 us | rcu_irq_enter();
2) 1.248 us | }
2) | __wake_up() {
2) 0.126 us | _raw_spin_lock_irqsave();
2) | __wake_up_common() {
2) | pollwake() {
2) | default_wake_function() {
2) | try_to_wake_up() {
2) 0.662 us | _raw_spin_lock_irqsave();
2) | select_task_rq_fair() {
2) 1.719 us | effective_load.isra.41();
2) 1.343 us | effective_load.isra.41();
2) | select_idle_sibling() {
2) 0.331 us | idle_cpu();
2) 1.458 us | }
2) 8.350 us | }
2) 0.200 us | _raw_spin_lock();
2) | ttwu_do_activate() {
2) | activate_task() {
2) 0.136 us | update_rq_clock.part.77();
2) | enqueue_task_fair() {
2) | enqueue_entity() {
2) 0.146 us | update_curr();
2) 0.330 us | account_entity_enqueue();
2) 0.280 us | update_cfs_shares();
2) 0.321 us | place_entity();
2) 0.206 us | __enqueue_entity();
2) 6.926 us | }
2) | enqueue_entity() {
2) 0.105 us | update_curr();
2) 0.175 us | account_entity_enqueue();
2) 0.531 us | update_cfs_shares();
#Signed-off-by: Namhyung Kim
Tested-by: Arnaldo Carvalho de Melo
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Peter Zijlstra
Cc: Steven Rostedt
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170224011251.14946-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Add new sort key 'symbol_size' to allow user to sort by symbol size, or
(more usefully) display the symbol size using --fields=...,symbol_size.Committer note:
Testing it together with the recently added -q, to remove the headers,
and using the '+' sign with -s, to add the symbol_size sort order to
the default, which is '-s/--sort comm,dso,symbol':# perf report -q -s +symbol_size | head -10
10.39% swapper [kernel.vmlinux] [k] intel_idle 270
3.45% swapper [kernel.vmlinux] [k] update_blocked_averages 1546
2.61% swapper [kernel.vmlinux] [k] update_load_avg 1292
2.36% swapper [kernel.vmlinux] [k] update_cfs_shares 240
1.83% swapper [kernel.vmlinux] [k] __hrtimer_run_queues 606
1.74% swapper [kernel.vmlinux] [k] update_cfs_rq_load_avg. 1187
1.66% swapper [kernel.vmlinux] [k] apic_timer_interrupt 152
1.60% CPU 0/KVM [kvm] [k] kvm_set_msr_common 3046
1.60% gnome-shell libglib-2.0.so.0 [.] g_slist_find 37
1.46% gnome-termina libglib-2.0.so.0 [.] g_hash_table_lookup 370
#Signed-off-by: Charles Baylis
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Maxim Kuvyrkov
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1487943176-13840-1-git-send-email-charles.baylis@linaro.org
[ Use symbol__size(), remove needless %lld + (long long) casting ]
Signed-off-by: Arnaldo Carvalho de Melo -
This is an odd refcount use case, so add some more comments to help
understand that when it hits zero it really means that the mmap()ed area
(on a perf_event_open() returned fd) has been munmap()ed.Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Wang Nan
Link: http://lkml.kernel.org/r/20170223162344.GD3595@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-10-git-send-email-elena.reshetova@intel.com
[ Did missing tests/thread-map.c conversion ]
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-9-git-send-email-elena.reshetova@intel.com
[ Did missing conversion in __machine__remove_thread() ]
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-8-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-7-git-send-email-elena.reshetova@intel.com
[ Did the missing conversion of tests/thread-mg-share.c too ]
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-6-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-5-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-4-git-send-email-elena.reshetova@intel.com
[ Reinstated comm_str__get() function, needed when reusing entries in the rbtree ]
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of atomic_t
when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Cc: alsa-devel@alsa-project.org
Link: http://lkml.kernel.org/r/1487691303-31858-3-git-send-email-elena.reshetova@intel.com
[ fixed mixed conversion to refcount in tests/cpumap.c ]
Signed-off-by: Arnaldo Carvalho de Melo -
The refcount_t type and corresponding API should be used instead of
atomic_t when the variable is used as a reference counter.This allows to avoid accidental refcounter overflows that might lead to
use-after-free situations.Signed-off-by: Elena Reshetova
Signed-off-by: David Windsor
Signed-off-by: Hans Liljestrand
Signed-off-by: Kees Kook
Tested-by: Arnaldo Carvalho de Melo
Cc: Alexander Shishkin
Cc: alsa-devel@alsa-project.org
Cc: Andrew Morton
Cc: David Windsor
Cc: Greg Kroah-Hartman
Cc: Hans Liljestrand
Cc: Jiri Olsa
Cc: Kees Kook
Cc: Mark Rutland
Cc: Matija Glavinic Pecotic
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1487691303-31858-2-git-send-email-elena.reshetova@intel.com
Signed-off-by: Arnaldo Carvalho de Melo -
To aid in catching bugs when using atomics as a reference count.
This is a trimmed down version with just what is used by tools/ at
this point.After this, the patches submitted by Elena for tools/ doing the
conversion from atomic_ to recount_ methods can be applied and tested.To activate it, buint perf with:
make DEBUG=1 -C tools/perf
Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-dqtxsumns9ov0l9r5x398f19@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The kernel has it and some files we got from there would require us
including the userland header for that, so add it conditionally.Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-gmwyal7c9vzzttlyk6u59rzn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
We've been using an atomic_t implementation subset based on the gcc
builtin functions for a while, now, with refcount.h we need cmpxchg(),
use gcc's __sync_val_compare_and_swap() for that.Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-b9zovyxgpa0c4vi3nm0kjo97@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Will be used by refcnt.h
Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-jszriruqfqpez1bkivwfj6qb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Will be used by atomic_cmpxchg_relaxed(), in turn used by refcount.h.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-kdmovd3l4gw5b1w31ypr6ddv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Will be included from atomic.h and used in refcount.h
Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-pzrydfee75mhq64kazxmf9it@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
From the kernel, get the gcc one and provide the fallback so that we can
continue build with other compilers, such as with clang.Will be used by tools/arch/x86/include/asm/cmpxchg.h.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Elena Reshetova
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-pecgz6efai4a9euuk4rxuotr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
When using perf stat on an AMD F15h system with the default hw events
attributes, some of the events don't get counted:Performance counter stats for 'sleep 1':
0.749208 task-clock (msec) # 0.001 CPUs utilized
1 context-switches # 0.001 M/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.072 M/sec
1,122,815 cycles # 1.499 GHz
286,740 stalled-cycles-frontend # 25.54% frontend cycles idle
stalled-cycles-backend (0.00%)
^^^^^^^^^^^^
instructions (0.00%)
^^^^^^^^^^^^
branches (0.00%)
branch-misses (0.00%)1.001550070 seconds time elapsed
The reason is that we have the HW watchdog consuming one PMU counter and
when perf tries to schedule 6 events on 6 counters and some of those
counters are constrained to only a specific subset of PMCs by the
hardware, the event scheduling fails.So issue a hint to disable the HW watchdog around a perf stat session.
Committer note:
Testing it...
# perf stat -d usleep 1
Performance counter stats for 'usleep 1':
1.180203 task-clock (msec) # 0.490 CPUs utilized
1 context-switches # 0.847 K/sec
0 cpu-migrations # 0.000 K/sec
54 page-faults # 0.046 M/sec
184,754 cycles # 0.157 GHz
714,553 instructions # 3.87 insn per cycle
154,661 branches # 131.046 M/sec
7,247 branch-misses # 4.69% of all branches
219,984 L1-dcache-loads # 186.395 M/sec
17,600 L1-dcache-load-misses # 8.00% of all L1-dcache hits (90.16%)
LLC-loads (0.00%)
LLC-load-misses (0.00%)0.002406823 seconds time elapsed
Some events weren't counted. Try disabling the NMI watchdog:
echo 0 > /proc/sys/kernel/nmi_watchdog
perf stat ...
echo 1 > /proc/sys/kernel/nmi_watchdog
#Signed-off-by: Borislav Petkov
Acked-by: Ingo Molnar
Tested-by: Arnaldo Carvalho de Melo
Cc: Peter Zijlstra
Cc: Robert Richter
Cc: Vince Weaver
Link: http://lkml.kernel.org/r/20170211183218.ijnvb5f7ciyuunx4@pd.tnic
Signed-off-by: Arnaldo Carvalho de Melo -
Reuse events from KnightsLanding for KnightsMill
Signed-off-by: Karol Wachowski
Cc: Alexander Shishkin
Cc: Andi Kleen
Cc: Dave Hansen
Cc: Kan Liang
Cc: Peter Zijlstra
Cc: Piotr Luc
Cc: Srinivas Pandruvada
Link: http://lkml.kernel.org/r/1487591440-25172-1-git-send-email-karol.wachowski@intel.com
Signed-off-by: Arnaldo Carvalho de Melo
02 Mar, 2017
13 commits
-
Conflicts:
arch/powerpc/configs/85xx/kmp204x_defconfigSigned-off-by: Ingo Molnar
-
Pull objtool relocation fixes from Ingo Molnar:
"Two fixes related to the module loading regression introduced by the
recent objtool changes"* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool, modules: Discard objtool annotation sections for modules
objtool, compiler.h: Fix __unreachable section relocation size -
Pull NFS client updates from Anna Schumaker:
"Highlights include:Stable bugfixes:
- NFSv4: Fix memory and state leak in _nfs4_open_and_get_state
- xprtrdma: Fix Read chunk padding
- xprtrdma: Per-connection pad optimization
- xprtrdma: Disable pad optimization by default
- xprtrdma: Reduce required number of send SGEs
- nlm: Ensure callback code also checks that the files match
- pNFS/flexfiles: If the layout is invalid, it must be updated before
retrying
- NFSv4: Fix reboot recovery in copy offload
- Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION
replies to OP_SEQUENCE"
- NFSv4: fix getacl head length estimation
- NFSv4: fix getacl ERANGE for sum ACL buffer sizesFeatures:
- Add and use dprintk_cont macros
- Various cleanups to NFS v4.x to reduce code duplication and
complexity
- Remove unused cr_magic related code
- Improvements to sunrpc "read from buffer" code
- Clean up sunrpc timeout code and allow changing TCP timeout
parameters
- Remove duplicate mw_list management code in xprtrdma
- Add generic functions for encoding and decoding xdr streamsBugfixes:
- Clean up nfs_show_mountd_netid
- Make layoutreturn_ops static and use NULL instead of 0 to fix
sparse warnings
- Properly handle -ERESTARTSYS in nfs_rename()
- Check if register_shrinker() failed during rpcauth_init()
- Properly clean up procfs/pipefs entries
- Various NFS over RDMA related fixes
- Silence unititialized variable warning in sunrpc"* tag 'nfs-for-4.11-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (64 commits)
NFSv4: fix getacl ERANGE for some ACL buffer sizes
NFSv4: fix getacl head length estimation
Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE"
NFSv4: Fix reboot recovery in copy offload
pNFS/flexfiles: If the layout is invalid, it must be updated before retrying
NFSv4: Clean up owner/group attribute decode
SUNRPC: Add a helper function xdr_stream_decode_string_dup()
NFSv4: Remove bogus "struct nfs_client" argument from decode_ace()
NFSv4: Fix the underestimation of delegation XDR space reservation
NFSv4: Replace callback string decode function with a generic
NFSv4: Replace the open coded decode_opaque_inline() with the new generic
NFSv4: Replace ad-hoc xdr encode/decode helpers with xdr_stream_* generics
SUNRPC: Add generic helpers for xdr_stream encode/decode
sunrpc: silence uninitialized variable warning
nlm: Ensure callback code also checks that the files match
sunrpc: Allow xprt->ops->timer method to sleep
xprtrdma: Refactor management of mw_list field
xprtrdma: Handle stale connection rejection
xprtrdma: Properly recover FRWRs with in-flight FASTREG WRs
xprtrdma: Shrink send SGEs array
... -
Pull f2fs updates from Jaegeuk Kim:
"This round introduces several interesting features such as on-disk NAT
bitmaps, IO alignment, and a discard thread. And it includes a couple
of major bug fixes as below.Enhancements:
- introduce on-disk bitmaps to avoid scanning NAT blocks when getting
free nids- support IO alignment to prepare open-channel SSD integration in
future- introduce a discard thread to avoid long latency during checkpoint
and fstrim- use SSR for warm node and enable inline_xattr by default
- introduce in-memory bitmaps to check FS consistency for debugging
- improve write_begin by avoiding needless read IO
Bug fixes:
- fix broken zone_reset behavior for SMR drive
- fix wrong victim selection policy during GC
- fix missing behavior when preparing discard commands
- fix bugs in atomic write support and fiemap
- workaround to handle multiple f2fs_add_link calls having same name
... and it includes a bunch of clean-up patches as well"
* tag 'for-f2fs-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (97 commits)
f2fs: avoid to flush nat journal entries
f2fs: avoid to issue redundant discard commands
f2fs: fix a plint compile warning
f2fs: add f2fs_drop_inode tracepoint
f2fs: Fix zoned block device support
f2fs: remove redundant set_page_dirty()
f2fs: fix to enlarge size of write_io_dummy mempool
f2fs: fix memory leak of write_io_dummy mempool during umount
f2fs: fix to update F2FS_{CP_}WB_DATA count correctly
f2fs: use MAX_FREE_NIDS for the free nids target
f2fs: introduce free nid bitmap
f2fs: new helper cur_cp_crc() getting crc in f2fs_checkpoint
f2fs: update the comment of default nr_pages to skipping
f2fs: drop the duplicate pval in f2fs_getxattr
f2fs: Don't update the xattr data that same as the exist
f2fs: kill __is_extent_same
f2fs: avoid bggc->fggc when enough free segments are avaliable after cp
f2fs: select target segment with closer temperature in SSR mode
f2fs: show simple call stack in fault injection message
f2fs: no need lock_op in f2fs_write_inline_data
... -
The '__unreachable' and '__func_stack_frame_non_standard' sections are
only used at compile time. They're discarded for vmlinux but they
should also be discarded for modules.Since this is a recurring pattern, prefix the section names with
".discard.". It's a nice convention and vmlinux.lds.h already discards
such sections.Also remove the 'a' (allocatable) flag from the __unreachable section
since it doesn't make sense for a discarded section.Suggested-by: Linus Torvalds
Signed-off-by: Josh Poimboeuf
Cc: Jessica Yu
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Fixes: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends")
Link: http://lkml.kernel.org/r/20170301180444.lhd53c5tibc4ns77@treble
Signed-off-by: Ingo Molnar -
Pull arm64 fixes from Will Deacon:
"The main fix here addresses a kernel panic triggered on Qualcomm
QDF2400 due to incorrect register usage in an erratum workaround
introduced during the merge window.Summary:
- Fix kernel panic on specific Qualcomm platform due to broken
erratum workaround- Revert contiguous bit support due to TLB conflict aborts in
simulation- Don't treat all CPU ID register fields as 4-bit quantities"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/cpufeature: check correct field width when updating sys_val
Revert "arm64: mm: set the contiguous bit for kernel mappings where appropriate"
arm64: Avoid clobbering mm in erratum workaround on QDF2400 -
Pull more powerpc updates from Michael Ellerman:
"Highlights include:- an update of the disassembly code used by xmon to the latest
versions in binutils. We've received permission from all the
authors of the relevant binutils changes to relicense their changes
to the relevant files from GPLv3 to GPLv2, for inclusion in Linux.
Thanks to Peter Bergner for doing the leg work to get permission
from everyone.- addition of the "architected" Power9 CPU table entry, allowing us
to boot in Power9 architected mode under a hypervisor.- updates to the Power9 PMU code.
- implementation of clear_bit_unlock_is_negative_byte() to optimise
unlock_page().- Freescale updates from Scott: "Highlights include 8xx breakpoints
and perf, t1042rdb display support, and board updates."Thanks to:
Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Balbir Singh, Douglas
Miller, Frédéric Weisbecker, Gavin Shan, Madhavan Srinivasan,
Michael Roth, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Peter
Bergner, Paul E. McKenney, Rashmica Gupta, Russell Currey, Sahil
Mehta, Stewart Smith"* tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits)
powerpc: Remove leftover cputime_to_nsecs call causing build error
powerpc/mm/hash: Always clear UPRT and Host Radix bits when setting up CPU
powerpc/optprobes: Fix TOC handling in optprobes trampoline
powerpc/pseries: Advertise Hot Plug Event support to firmware
cxl: fix nested locking hang during EEH hotplug
powerpc/xmon: Dump memory in CPU endian format
powerpc/pseries: Revert 'Auto-online hotplugged memory'
powerpc/powernv: Make PCI non-optional
powerpc/64: Implement clear_bit_unlock_is_negative_byte()
powerpc/powernv: Remove unused variable in pnv_pci_sriov_disable()
powerpc/kernel: Remove error message in pcibios_setup_phb_resources()
powerpc/mm: Fix typo in set_pte_at()
pci/hotplug/pnv-php: Disable MSI and PCI device properly
pci/hotplug/pnv-php: Disable surprise hotplug capability on conflicts
pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()
powerpc: Add POWER9 architected mode to cputable
powerpc/perf: use is_kernel_addr macro in perf_get_misc_flags()
powerpc/perf: Avoid FAB_*_MATCH checks for power9
powerpc/perf: Add restrictions to PMC5 in power9 DD1
powerpc/perf: Use Instruction Counter value
... -
INPUT_PROP_BUTTONPAD is currently only set through the platform data.
The RMI4 header doc says that this property is there to force the
buttonpad property, so we also need to detect it by looking at
the exported buttons count.Signed-off-by: Benjamin Tissoires
Reported-and-tested-by: Linus Torvalds
Signed-off-by: Linus Torvalds -
Pull sound fixes from Takashi Iwai:
"A few last-minute fixes for rc1:- ALSA core timer and sequencer fixes for bugs spotted by syzkaller
- a couple of trivial HD-audio fixups
- additional PCI / codec IDs for Intel Geminilake
- fixes for CT-XFi DMA mask bugs"
* tag 'sound-fix-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: seq: Fix link corruption by event error handling
ALSA: hda - Add subwoofer support for Dell Inspiron 17 7000 Gaming
ALSA: ctxfi: Fallback DMA mask to 32bit
ALSA: timer: Reject user params with too small ticks
ALSA: hda: Add Geminilake HDMI codec ID
ALSA: hda - Fix micmute hotkey problem for a lenovo AIO machine
ALSA: hda - Add Geminilake PCI ID -
Pull thermal management updates from Zhang Rui:
- add thermal driver for R-Car Gen3 thermal sensors.
- add thermal driver for ZTE' zx2967 family thermal sensors.
- convert thermal ID allocation from IDR to IDA.
- fix a possible NULL dereference in imx thermal driver.
- fix a ti-soc-thermal driver dependency issue so that critical thermal
control is still available when CPU_THERMAL is not defined.- update binding information for QorIQ thermal driver.
- a couple of cleanups in thermal core, intel_powerclamp, exynos,
dra752-thermal, mtk-thermal driver.* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
powerpc/mpc85xx: Update TMU device tree node for T1023/T1024
powerpc/mpc85xx: Update TMU device tree node for T1040/T1042
dt-bindings: Update QorIQ TMU thermal bindings
thermal: mtk_thermal: Staticise a number of data variables
thermal: arm: dra752: Remove all TSHUT related definitions
thermal: arm: dra752: Remove TSHUT configuration
thermal: ti-soc-thermal: Remove CPU_THERMAL Dependency from TI_THERMAL
thermal: imx: Fix possible NULL dereference.
thermal: exynos: Remove parsing unused samsung,tmu_cal_mode property
thermal: zx2967: add thermal driver for ZTE's zx2967 family
thermal: use cpumask_var_t for on-stack cpu masks
dt: bindings: add documentation for zx2967 family thermal sensor
thermal/intel_powerclamp: Remove set-but-not-used variables
thermal: rcar_gen3_thermal: Add R-Car Gen3 thermal driver
thermal: rcar_gen3_thermal: Document the R-Car Gen3
thermal: convert devfreq_cooling to use an IDA
thermal: convert cpu_cooling to use an IDA
thermal: convert clock cooling to use an IDA
thermal core: convert ID allocation to IDA -
…ierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"This set contains mostly fixes to existing drivers as well as cleanup
of code that's not been in active use for a while"* tag 'pwm/for-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (27 commits)
acpi: lpss: call pwm_add_table() for BSW PWM device
pwm: Try to load modules during pwm_get()
pwm: Don't hold pwm_lookup_lock longer than necessary
pwm: Make the PWM_POLARITY flag in DTB optional
pwm: Print error messages with pr_err() instead of pr_debug()
pwm: imx: Add polarity inversion support to i.MX's PWMv2
pwm: imx: doc: Update imx-pwm.txt documentation entry
pwm: imx: Remove redundant i.MX PWMv2 code
pwm: imx: Provide atomic PWM support for i.MX PWMv2
pwm: imx: Move PWMv2 wait for fifo slot code to a separate function
pwm: imx: Move PWMv2 software reset code to a separate function
pwm: imx: Rewrite v1 code to facilitate switch to atomic PWM
pwm: imx: Add separate set of PWM ops for v1 and v2
pwm: imx: Remove ipg clock and enable per clock when required
pwm: lpss: Add Intel Gemini Lake PCI ID
pwm: lpss: Do not export board infos for different PWM types
pwm: lpss: Avoid reconfiguring while UPDATE bit is still enabled
pwm: lpss: Switch to new atomic API
pwm: lpss: Allow duty cycle to be 0
pwm: lpss: Avoid potential overflow of base_unit
... -
Pull drm AST2500 support from Dave Airlie:
"This is a set of changes to enable the AST2500 BMC hardware, and also
fix some bugs interacting with the older AST hardware.Some of the bug fixes are cc'ed to stable"
* tag 'drm-ast-2500-for-v4.11' of git://people.freedesktop.org/~airlied/linux:
drm/ast: Call open_key before enable_mmio in POST code
drm/ast: Fix test for VGA enabled
drm/ast: POST code for the new AST2500
drm/ast: Rename ast_init_dram_2300 to ast_post_chip_2300
drm/ast: Factor mmc_test code in POST code
drm/ast: Fixed vram size incorrect issue on POWER
drm/ast: Base support for AST2500
drm/ast: Fix calculation of MCLK
drm/ast: Remove spurious include
drm/ast: const'ify mode setting tables
drm/ast: Handle configuration without P2A bridge
drm/ast: Fix AST2400 POST failure without BMC FW or VBIOS -
Pull drm fixes from Dave Airlie:
"Misc fixes for v4.11-rc1.This is a selection of fixes for recent bugs, the vmwgfx one is
important to avoid a regression, and compat ioctl one is pretty urgent
for stable. Otherwise nothing too much.I've got a separate pull req for some AST hw IBM need to enable"
* tag 'drm-fixes-for-v4.11-rc1' of git://people.freedesktop.org/~airlied/linux:
dma-buf: add support for compat ioctl
drm/vmwgfx: Work around drm removal of control nodes
drm/rockchip: cdn-dp: Fix error handling
drm/rockchip: add extcon dependency for DP
drm: zte: fix static checker warning on variable 'fmt'
01 Mar, 2017
4 commits
-
Linus reported the following commit broke module loading on his laptop:
d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends")
It showed errors like the following:
module: overflow in relocation type 10 val ffffffffc02afc81
module: 'nvme' likely not compiled with -mcmodel=kernelThe problem is that the __unreachable section addresses are stored using
the '.long' asm directive, which isn't big enough for .text section
kernel addresses. Use relative addresses instead:".long %c0b - .\t\n"
Suggested-by: Linus Torvalds
Reported-by: Linus Torvalds
Signed-off-by: Josh Poimboeuf
Cc: Peter Zijlstra
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Fixes: d1091c7fa3d5 ("objtool: Improve detection of BUG() and other dead ends")
Link: http://lkml.kernel.org/r/20170301060504.oltm3iws6fmubnom@treble
Signed-off-by: Ingo Molnar -
We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as
well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS.Consistently use the plurals.
Signed-off-by: Anton Blanchard
Cc: Andy Lutomirski
Cc: Borislav Petkov
Cc: Brian Gerst
Cc: Denys Vlasenko
Cc: H. Peter Anvin
Cc: Josh Poimboeuf
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: acme@kernel.org
Cc: alexander.shishkin@linux.intel.com
Cc: davem@davemloft.net
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20170216060050.20866-1-anton@ozlabs.org
Signed-off-by: Ingo Molnar -
Fix to the exception table entry check by using probed address
instead of the address of copied instruction.This bug may cause unexpected kernel panic if user probe an address
where an exception can happen which should be fixup by __ex_table
(e.g. copy_from_user.)Unless user puts a kprobe on such address, this doesn't
cause any problem.This bug has been introduced years ago, by commit:
464846888d9a ("x86/kprobes: Fix a bug which can modify kernel code permanently").
Signed-off-by: Masami Hiramatsu
Cc: Borislav Petkov
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Fixes: 464846888d9a ("x86/kprobes: Fix a bug which can modify kernel code permanently")
Link: http://lkml.kernel.org/r/148829899399.28855.12581062400757221722.stgit@devbox
Signed-off-by: Ingo Molnar -
Pull IPMI updates from Corey Minyard:
"This is a few small fixes to the main IPMI driver, make some things
const, fix typos, etc.The last patch came in about a week ago, but IMHO it's best to go in
now. It is not for the main driver, it's for the bt-bmc driver, which
runs on the managment controller side, not on the host side, so the
scope is limited and the change is necessary"* tag 'for-linus-4.11' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: bt-bmc: Use a regmap for register access
char: ipmi: constify ipmi_smi_handlers structures
acpi:ipmi: Make IPMI user handler const
ipmi: make ipmi_usr_hndl const
Documentation: Fix a typo in IPMI.txt.
