- 13 Apr, 2016 5 commits
-
-
Alexander Shishkin authored
At the moment, initialization path is using test_cpu_cap(&boot_cpu_data), to detect PT, which is just open coding boot_cpu_has(). Use the latter instead. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Acked-by: Borislav Petkov <bp@suse.de> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: eranian@google.com Cc: vince@deater.net Link: http://lkml.kernel.org/r/1459953307-14372-1-git-send-email-alexander.shishkin@linux.intel.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
-
Julia Lawall authored
The uprobe_xol_ops structures are never modified, so declare them as const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kernel-janitors@vger.kernel.org Link: http://lkml.kernel.org/r/1460200649-32526-1-git-send-email-Julia.Lawall@lip6.frSigned-off-by: Ingo Molnar <mingo@kernel.org>
-
Ingo Molnar authored
Merge tag 'perf-core-for-mingo-20160411' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements from Arnaldo Carvalho de Melo: User visible changes: - Automagically create a 'bpf-output' event, easing the setup of BPF C "scripts" that produce output via the perf ring buffer. Now it is just a matter of calling any perf tool, such as 'trace', with a C source file that references the __bpf_stdout__ output channel and that channel will be created and connected to the script: # trace -e nanosleep --event test_bpf_stdout.c usleep 1 0.013 ( 0.013 ms): usleep/2818 nanosleep(rqtp: 0x7ffcead45f40 ) ... 0.013 ( ): __bpf_stdout__:Raise a BPF event!..) 0.015 ( ): perf_bpf_probe:func_begin:(ffffffff81112460)) 0.261 ( ): __bpf_stdout__:Raise a BPF event!..) 0.262 ( ): perf_bpf_probe:func_end:(ffffffff81112460 <- ffffffff81003d92)) 0.264 ( 0.264 ms): usleep/2818 ... [continued]: nanosleep()) = 0 # Further work is needed to reduce the number of lines in a perf bpf C source file, this being the part where we greatly reduce the command line setup (Wang Nan) - 'perf trace' now supports callchains, with 'trace --call-graph dwarf' using libunwind, just like 'perf top', to ask the kernel for stack dumps for CFI processing. This reduces the overhead by asking just for userspace callchains and also only for the syscall exit tracepoint (raw_syscalls:sys_exit) (Milian Wolff, Arnaldo Carvalho de Melo) Try it with, for instance: # perf trace --call dwarf ping 127.0.0.1 An excerpt of a system wide 'perf trace --call dwarf" session is at: https://fedorapeople.org/~acme/perf/perf-trace--call-graph-dwarf--all-cpus.txt You may need to bump the number of mmap pages, using -m/--mmap-pages, but on a Broadwell machine the defaults allowed system wide tracing to work without losing that many records, experiment with just some syscalls, like: # perf trace --call dwarf -e nanosleep,futex All the targets available for 'perf record', 'perf top' (--pid, --tid, --cpu, etc) should work. Also --duration may be interesting to try. To get filenames from in various syscalls pointer args (open, ettc), add this to the mix: # perf probe 'vfs_getname=getname_flags:72 pathname=filename:string' Making this work is next in line: # trace --call dwarf --ev sched:sched_switch/call-graph=fp/ usleep 1 I.e. honouring per-tracepoint callchains in 'perf trace' in addition to in raw_syscalls:sys_exit. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
-
Ingo Molnar authored
Merge tag 'perf-core-for-mingo-20160408' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: User visible changes: - Beautify more syscall arguments in 'perf trace', using the type column in tracepoint /format fields to attach, for instance, a pid_t resolver to the thread COMM, also attach a mode_t beautifier in the same fashion (Arnaldo Carvalho de Melo) - Build the syscall table id <-> name resolver using the same .tbl file used in the kernel to generate headers, to avoid the delay in getting new syscalls supported in the audit-libs external dependency, done so far only for x86_64 (Arnaldo Carvalho de Melo) - Improve the documentation of event specifications (Andi Kleen) - Process update events in 'perf script', fixing up this use case: # perf stat -a -I 1000 -e cycles record | perf script -s script.py - Shared object symbol adjustment fixes, fixing symbol resolution in Android (Wang Nan) Infrastructure changes: - Add dedicated unwind addr_space member into thread struct, to allow tools to use thread->priv, noticed while working on having callchains in 'perf trace' (Jiri Olsa) Build fixes: - Fix the build in Ubuntu 12.04 (Arnaldo Carvalho de Melo, Vinson Lee) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
-
Ingo Molnar authored
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-
- 12 Apr, 2016 14 commits
-
-
Arnaldo Carvalho de Melo authored
Instead of having "[unknown]" as the name used for unresolved symbols, use the address in the callchain, in hexadecimal form: 28.801 ( 0.007 ms): qemu-system-x8/10065 ppoll(ufds: 0x55c98b39e400, nfds: 72, tsp: 0x7fffe4e4fe60, sigsetsize: 8) = 0 Timeout ppoll+0x91 (/usr/lib64/libc-2.22.so) [0x337309] (/usr/bin/qemu-system-x86_64) [0x336ab4] (/usr/bin/qemu-system-x86_64) main+0x1724 (/usr/bin/qemu-system-x86_64) __libc_start_main+0xf0 (/usr/lib64/libc-2.22.so) [0xc59a9] (/usr/bin/qemu-system-x86_64) 35.265 (14.805 ms): gnome-shell/2287 ... [continued]: poll()) = 1 [0xf6fdd] (/usr/lib64/libc-2.22.so) g_main_context_iterate.isra.29+0x17c (/usr/lib64/libglib-2.0.so.0.4600.2) g_main_loop_run+0xc2 (/usr/lib64/libglib-2.0.so.0.4600.2) meta_run+0x2c (/usr/lib64/libmutter.so.0.0.0) main+0x3f7 (/usr/bin/gnome-shell) __libc_start_main+0xf0 (/usr/lib64/libc-2.22.so) [0x2909] (/usr/bin/gnome-shell) Suggested-by: Milian Wolff <milian.wolff@kdab.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
The fprintf_sym() and fprintf_callchain() methods now allow users to change the existing behaviour of showing "[unknown]" as the name of unresolved symbols to instead show "[0x123456]", i.e. its address. The current patch doesn't change tools to use this facility, the results from 'perf trace' and 'perf script' cotinue like: 70.109 ( 0.001 ms): qemu-system-x8/10153 poll(ufds: 0x7f2d93ffe870, nfds: 1) = 0 Timeout [unknown] (/usr/lib64/libc-2.22.so) [unknown] (/usr/lib64/libspice-server.so.1.10.0) [unknown] (/usr/lib64/libspice-server.so.1.10.0) [unknown] (/usr/lib64/libspice-server.so.1.10.0) start_thread+0xca (/usr/lib64/libpthread-2.22.so) __clone+0x6d (/usr/lib64/libc-2.22.so) The next patch will make 'perf trace' use the new formatting. Suggested-by: Milian Wolff <milian.wolff@kdab.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
We don't need the callchains at the syscall enter tracepoint, just when finishing it at syscall exit, so reduce the overhead by asking for callchains just at syscall exit. Suggested-by: Milian Wolff <milian.wolff@kdab.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
The rename is for consistency with the parameter name. Make it public for fine grained control of which evsels should have callchains enabled, like, for instance, will be done in the next changesets in 'perf trace', to enable callchains just on the "raw_syscalls:sys_exit" tracepoint. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-og8vup111rn357g4yagus3ao@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
For fiddling with sample_type fields in all evsels in an evlist. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-dg6yavctt0hzl2tsgfb43qsr@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
Instead receive a callchain_param pointer to configure callchain aspects, not doing so if NULL is passed. This will allow fine grained control over which evsels in an evlist gets callchains enabled. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-2mupip6khc92mh5x4nw9to82@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
The kernel parts are not that useful: # trace -m 512 -e nanosleep --call dwarf usleep 1 0.065 ( 0.065 ms): usleep/18732 nanosleep(rqtp: 0x7ffc4ee4e200) = 0 syscall_slow_exit_work ([kernel.kallsyms]) do_syscall_64 ([kernel.kallsyms]) return_from_SYSCALL_64 ([kernel.kallsyms]) __nanosleep (/usr/lib64/libc-2.22.so) usleep (/usr/lib64/libc-2.22.so) main (/usr/bin/usleep) __libc_start_main (/usr/lib64/libc-2.22.so) _start (/usr/bin/usleep) # So lets just use perf_event_attr.exclude_callchain_kernel to avoid collecting it in the ring buffer: # trace -m 512 -e nanosleep --call dwarf usleep 1 0.063 ( 0.063 ms): usleep/19212 nanosleep(rqtp: 0x7ffc3df10fb0) = 0 __nanosleep (/usr/lib64/libc-2.22.so) usleep (/usr/lib64/libc-2.22.so) main (/usr/bin/usleep) __libc_start_main (/usr/lib64/libc-2.22.so) _start (/usr/bin/usleep) # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-qctu3gqhpim0dfbcp9d86c91@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
In 'perf trace' we're just interested in printing callchains, and we don't want to use the symbol_conf.use_callchain, so move the callchain part to a new method. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-kcn3romzivcpxb3u75s9nz33@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
As it receives a FILE, and its more than just the IP, which can even be requested not to be printed. For consistency with other similar methods in tools/perf/, name it as perf_evsel__fprintf_sym() and make it return the number of bytes printed, just like 'fprintf(3)' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-84gawlqa3lhk63nf0t9vnqnn@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Milian Wolff authored
Now, one can print the call chain for every encountered sys_exit event, e.g.: $ perf trace -e nanosleep --call-graph dwarf path/to/ex_sleep 1005.757 (1000.090 ms): ex_sleep/13167 nanosleep(...) = 0 syscall_slow_exit_work ([kernel.kallsyms]) syscall_return_slowpath ([kernel.kallsyms]) int_ret_from_sys_call ([kernel.kallsyms]) __nanosleep (/usr/lib/libc-2.23.so) [unknown] (/usr/lib/libQt5Core.so.5.6.0) QThread::sleep (/usr/lib/libQt5Core.so.5.6.0) main (path/to/ex_sleep) __libc_start_main (/usr/lib/libc-2.23.so) _start (path/to/ex_sleep) Note that it is advised to increase the number of mmap pages to prevent event losses when using this new feature. Often, adding `-m 10M` to the `perf trace` invocation is enough. This feature is also available in strace when built with libunwind via `strace -k`. Performance wise, this solution is much better: $ time find path/to/linux &> /dev/null real 0m0.051s user 0m0.013s sys 0m0.037s $ time perf trace -m 800M --call-graph dwarf find path/to/linux &> /dev/null real 0m2.624s user 0m1.203s sys 0m1.333s $ time strace -k find path/to/linux &> /dev/null real 0m35.398s user 0m10.403s sys 0m23.173s Note that it is currently not possible to configure the print output. Adding such a feature, similar to what is available in `perf script` via its `--fields` knob can be added later on. Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> LPU-Reference: 1460115255-17648-1-git-send-email-milian.wolff@kdab.com [ Split from a larger patch, do not print the IP, left align, remove dup call symbol__init(), added man page entry ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Arnaldo Carvalho de Melo authored
For callchains, etc where we want it to align just below the syscall name, for instance, in 'perf trace' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-uk9ekchd67651c625ltaur5y@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Milian Wolff authored
As this function will be used in 'perf trace'. Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/n/tip-8x297v9utnxq77onikevvlse@git.kernel.org [ Split from a larger patch ] Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
-
Wang Nan authored
This patch removes the need to set a bpf-output event in cmdline. By referencing a map named '__bpf_stdout__', perf automatically creates an event for it. For example: # perf record -e ./test_bpf_trace.c usleep 100000 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.012 MB perf.data (2 samples) ] # perf script usleep 4639 [000] 261895.307826: 0 __bpf_stdout__: ffffffff810eb9a1 ... BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a 0008: 42 50 46 20 65 76 65 6e BPF even 0010: 74 21 00 00 t!.. BPF string: "Raise a BPF event!" usleep 4639 [000] 261895.407883: 0 __bpf_stdout__: ffffffff8105d609 ... BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a 0008: 42 50 46 20 65 76 65 6e BPF even 0010: 74 21 00 00 t!.. BPF string: "Raise a BPF event!" perf record -e ./test_bpf_trace.c usleep 100000 equals to: perf record -e bpf-output/no-inherit=1,name=__bpf_stdout__/ \ -e ./test_bpf_trace.c/map:__bpf_stdout__.event=__bpf_stdout__/ \ usleep 100000 Where test_bpf_trace.c is: /************************ BEGIN **************************/ #include <uapi/linux/bpf.h> struct bpf_map_def { unsigned int type; unsigned int key_size; unsigned int value_size; unsigned int max_entries; }; #define SEC(NAME) __attribute__((section(NAME), used)) static u64 (*ktime_get_ns)(void) = (void *)BPF_FUNC_ktime_get_ns; static int (*trace_printk)(const char *fmt, int fmt_size, ...) = (void *)BPF_FUNC_trace_printk; static int (*get_smp_processor_id)(void) = (void *)BPF_FUNC_get_smp_processor_id; static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) = (void *)BPF_FUNC_perf_event_output; struct bpf_map_def SEC("maps") __bpf_stdout__ = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int), .value_size = sizeof(u32), .max_entries = __NR_CPUS__, }; static inline int __attribute__((always_inline)) func(void *ctx, int type) { char output_str[] = "Raise a BPF event!"; char err_str[] = "BAD %d\n"; int err; err = perf_event_output(ctx, &__bpf_stdout__, get_smp_processor_id(), &output_str, sizeof(output_str)); if (err) trace_printk(err_str, sizeof(err_str), err); return 1; } SEC("func_begin=sys_nanosleep") int func_begin(void *ctx) {return func(ctx, 1);} SEC("func_end=sys_nanosleep%return") int func_end(void *ctx) { return func(ctx, 2);} char _license[] SEC("license") = "GPL"; int _version SEC("version") = LINUX_VERSION_CODE; /************************* END ***************************/ Committer note: Testing with 'perf trace': # trace -e nanosleep --ev test_bpf_stdout.c usleep 1 0.007 ( 0.007 ms): usleep/729 nanosleep(rqtp: 0x7ffc5bbc5fe0) ... 0.007 ( ): __bpf_stdout__:Raise a BPF event!..) 0.008 ( ): perf_bpf_probe:func_begin:(ffffffff81112460)) 0.069 ( ): __bpf_stdout__:Raise a BPF event!..) 0.070 ( ): perf_bpf_probe:func_end:(ffffffff81112460 <- ffffffff81003d92)) 0.072 ( 0.072 ms): usleep/729 ... [continued]: nanosleep()) = 0 # Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1460128045-97310-5-git-send-email-wangnan0@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
Wang Nan authored
This patch allows cloning bpf-output event configuration among multiple bpf scripts. If there exist a map named '__bpf_output__' and not configured using 'map:__bpf_output__.event=', this patch clones the configuration of another '__bpf_stdout__' map. For example, following command: # perf trace --ev bpf-output/no-inherit,name=evt/ \ --ev ./test_bpf_trace.c/map:__bpf_stdout__.event=evt/ \ --ev ./test_bpf_trace2.c usleep 100000 equals to: # perf trace --ev bpf-output/no-inherit,name=evt/ \ --ev ./test_bpf_trace.c/map:__bpf_stdout__.event=evt/ \ --ev ./test_bpf_trace2.c/map:__bpf_stdout__.event=evt/ \ usleep 100000 Signed-off-by: Wang Nan <wangnan0@huawei.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1460128045-97310-4-git-send-email-wangnan0@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
- 11 Apr, 2016 4 commits
-
-
Linus Torvalds authored
-
git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: "A couple of small fixes, and wiring up the new syscalls which appeared during the merge window" * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: ARM: 8550/1: protect idiv patching against undefined gcc behavior ARM: wire up preadv2 and pwritev2 syscalls ARM: SMP enable of cache maintanence broadcast
-
git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: "Here are a couple of mmc fixes intended for v4.6 rc3: MMC host: - sdhci: Fix regression setting power on Trats2 board - sdhci-pci: Add support and PCI IDs for more Broxton host controllers" * tag 'mmc-v4.6-rc1' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sdhci-pci: Add support and PCI IDs for more Broxton host controllers mmc: sdhci: Fix regression setting power on Trats2 board
-
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Some bugfixes from I2C: - fix a uevent triggered boot problem by removing a useless debug print - fix sysfs-attributes of the new i2c-demux-pinctrl driver to follow standard kernel behaviour - fix a potential division-by-zero error (needed two takes)" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: jz4780: really prevent potential division by zero Revert "i2c: jz4780: prevent potential division by zero" i2c: jz4780: prevent potential division by zero i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes i2c: mux: demux-pinctrl: Clean up sysfs attributes i2c: prevent endless uevent loop with CONFIG_I2C_DEBUG_CORE
-
- 10 Apr, 2016 1 commit
-
-
Linus Torvalds authored
This reverts commit 1028b55b. It's broken: it makes ext4 return an error at an invalid point, causing the readdir wrappers to write the the position of the last successful directory entry into the position field, which means that the next readdir will now return that last successful entry _again_. You can only return fatal errors (that terminate the readdir directory walk) from within the filesystem readdir functions, the "normal" errors (that happen when the readdir buffer fills up, for example) happen in the iterorator where we know the position of the actual failing entry. I do have a very different patch that does the "signal_pending()" handling inside the iterator function where it is allowable, but while that one passes all the sanity checks, I screwed up something like four times while emailing it out, so I'm not going to commit it today. So my track record is not good enough, and the stars will have to align better before that one gets committed. And it would be good to get some review too, of course, since celestial alignments are always an iffy debugging model. IOW, let's just revert the commit that caused the problem for now. Reported-by: Greg Thelen <gthelen@google.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-
- 09 Apr, 2016 15 commits
-
-
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc fixes from Helge Deller: "Since commit 0de79858 ("parisc: Use generic extable search and sort routines") module loading is boken on parisc, because the parisc module loader wasn't prepared for the new R_PARISC_PCREL32 relocations. In addition, due to that breakage, Mikulas Patocka noticed that handling exceptions from modules probably never worked on parisc. It was just masked by the fact that exceptions from modules don't happen during normal use. This patch series fixes those issues and survives the tests of the lib/test_user_copy kernel module test. Some patches are tagged for stable" * 'parisc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Update comment regarding relative extable support parisc: Unbreak handling exceptions from kernel modules parisc: Fix kernel crash with reversed copy_from_user() parisc: Avoid function pointers for kernel exception routines parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
-
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: "Three fixes, the first two are tagged for -stable: - The ndctl utility/library gained expanded unit tests illuminating a long standing bug in the libnvdimm SMART data retrieval implementation. It has been broken since its initial implementation, now fixed. - Another one line fix for the detection of stale info blocks. Without this change userspace can get into a situation where it is unable to reconfigure a namespace. - Fix the badblock initialization path in the presence of the new (in v4.6-rc1) section alignment workarounds. Without this change badblocks will be reported at the wrong offset. These have received a build success report from the kbuild robot and have appeared in -next with no reported issues" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm, pfn: fix nvdimm_namespace_add_poison() vs section alignment libnvdimm, pfn: fix uuid validation libnvdimm: fix smart data retrieval
-
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds authored
Pull GPIO fixes from Linus Walleij: "Here is a set of four GPIO fixes. The two fixes to the core are serious as they are regressing minor architectures. Core fixes: - Defer GPIO device setup until after gpiolib is initialized. It turns out that a few very tightly integrated GPIO platform drivers initialize so early (befor core_initcall()) so that the gpiolib isn't even initialized itself. That limits what the library can do, and we cannot reference uninitialized fields until later. Defer some of the initialization until right after the gpiolib is initialized in these (rare) cases. - As a consequence: do not use devm_* resources when allocating the states in the initial set-up of the gpiochip. Driver fixes: - In ACPI retrieveal: ignore GpioInt when looking for output GPIOs. - Fix legacy builds on the PXA without a backing pin controller. - Use correct datatype on pca953x register writes" * tag 'gpio-v4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: pca953x: Use correct u16 value for register word write gpiolib: Defer gpio device setup until after gpiolib initialization gpiolib: Do not use devm functions when registering gpio chip gpio: pxa: fix legacy non pinctrl aware builds gpio / ACPI: ignore GpioInt() GPIOs when requesting GPIO_OUT_*
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty fixes from Greg KH: "Here are two tty fixes for issues found. One was due to a merge error in 4.6-rc1, and the other a regression fix for UML consoles that broke in 4.6-rc1. Both have been in linux-next for a while" * tag 'tty-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty: Fix merge of "tty: Refactor tty_open()" tty: Fix UML console breakage
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some USB fixes and new device ids for 4.6-rc3. Nothing major, the normal USB gadget fixes and usb-serial driver ids, along with some other fixes mixed in. All except the USB serial ids have been tested in linux-next, the id additions should be fine as they are 'trivial'" * tag 'usb-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits) USB: option: add "D-Link DWM-221 B1" device id USB: serial: cp210x: Adding GE Healthcare Device ID USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devices usb: dwc3: keystone: drop dma_mask configuration usb: gadget: udc-core: remove manual dma configuration usb: dwc3: pci: add ID for one more Intel Broxton platform usb: renesas_usbhs: fix to avoid using a disabled ep in usbhsg_queue_done() usb: dwc2: do not override forced dr_mode in gadget setup usb: gadget: f_midi: unlock on error USB: digi_acceleport: do sanity checking for the number of ports USB: cypress_m8: add endpoint sanity check USB: mct_u232: add sanity checking in probe usb: fix regression in SuperSpeed endpoint descriptor parsing USB: usbip: fix potential out-of-bounds write usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler() usb: gadget: f_midi: Fixed a bug when buflen was smaller than wMaxPacketSize usb: phy: qcom-8x16: fix regulator API abuse usb: ch9: Fix SSP Device Cap wFunctionalitySupport type usb: gadget: composite: Access SSP Dev Cap fields properly ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging and IIO driver fixes from Greg KH: "Here are some IIO driver fixes, along with two staging driver fixes for 4.6-rc3. One staging driver patch reverts the deletion of a driver that happened in 4.6-rc1. We thought that laptop.org was dead, but it's still alive and kicking, and has users that were mad we broke their hardware by deleting a driver for their machines. So that driver is added back and everyone is happy again. All of these have been in linux-next for a while with no reported issues" * tag 'staging-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: Revert "Staging: olpc_dcon: Remove obsolete driver" staging/rdma/hfi1: select CRC32 iio: gyro: bmg160: fix buffer read values iio: gyro: bmg160: fix endianness when reading axes iio: accel: bmc150: fix endianness when reading axes iio: st_magn: always define ST_MAGN_TRIGGER_SET_STATE iio: fix config watermark initial value iio: health: max30100: correct FIFO check condition iio: imu: Fix inv_mpu6050 dependencies iio: adc: Fix build error of missing devm_ioremap_resource on UM iio: light: apds9960: correct FIFO check condition iio: adc: max1363: correct reference voltage iio: adc: max1363: add missing adc to max1363_id
-
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "This is a set of eight fixes. Two are trivial gcc-6 updates (brace additions and unused variable removal). There's a couple of cxlflash regressions, a correction for sd being overly chatty on revalidation (causing excess log increases). A VPD issue which could crash USB devices because they seem very intolerant to VPD inquiries, an ALUA deadlock fix and a mpt3sas buffer overrun fix" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: Do not attach VPD to devices that don't support it sd: Fix excessive capacity printing on devices with blocks bigger than 512 bytes scsi_dh_alua: Fix a recently introduced deadlock scsi: Declare local symbols static cxlflash: Move to exponential back-off when cmd_room is not available cxlflash: Fix regression issue with re-ordering patch mpt3sas: Don't overreach ioc->reply_post[] during initialization aacraid: add missing curly braces
-
git://git.kernel.org/pub/scm/linux/kernel/git/shli/mdLinus Torvalds authored
Pull MD fixes from Shaohua Li: "This update mainly fixes bugs: - fix error handling (Guoqing) - fix a crash when a disk is hotremoved (me) - fix a dead loop (Wei Fang)" * tag 'md/4.6-rc2-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: md/bitmap: clear bitmap if bitmap_create failed MD: add rdev reference for super write md: fix a trivial typo in comments md:raid1: fix a dead loop when read from a WriteMostly disk
-
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management and ACPI fixes from Rafael Wysocki: "Fixes for some issues discovered after recent changes and for some that have just been found lately regardless of those changes (intel_pstate, intel_idle, PM core, mailbox/pcc, turbostat) plus support for some new CPU models (intel_idle, Intel RAPL driver, turbostat) and documentation updates (intel_pstate, PM core). Specifics: - intel_pstate fixes for two issues exposed by the recent switch over from using timers and for one issue introduced during the 4.4 cycle plus new comments describing data structures used by the driver (Rafael Wysocki, Srinivas Pandruvada). - intel_idle fixes related to CPU offline/online (Richard Cochran). - intel_idle support (new CPU IDs and state definitions mostly) for Skylake-X and Kabylake processors (Len Brown). - PCC mailbox driver fix for an out-of-bounds memory access that may cause the kernel to panic() (Shanker Donthineni). - New (missing) CPU ID for one apparently overlooked Haswell model in the Intel RAPL power capping driver (Srinivas Pandruvada). - Fix for the PM core's wakeup IRQs framework to make it work after wakeup settings reconfiguration from sysfs (Grygorii Strashko). - Runtime PM documentation update to make it describe what needs to be done during device removal more precisely (Krzysztof Kozlowski). - Stale comment removal cleanup in the cpufreq-dt driver (Viresh Kumar). - turbostat utility fixes and support for Broxton, Skylake-X and Kabylake processors (Len Brown)" * tag 'pm+acpi-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits) PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs tools/power turbostat: work around RC6 counter wrap tools/power turbostat: initial KBL support tools/power turbostat: initial SKX support tools/power turbostat: decode BXT TSC frequency via CPUID tools/power turbostat: initial BXT support tools/power turbostat: print IRTL MSRs tools/power turbostat: SGX state should print only if --debug intel_idle: Add KBL support intel_idle: Add SKX support intel_idle: Clean up all registered devices on exit. intel_idle: Propagate hot plug errors. intel_idle: Don't overreact to a cpuidle registration failure. intel_idle: Setup the timer broadcast only on successful driver load. intel_idle: Avoid a double free of the per-CPU data. intel_idle: Fix dangling registration on error path. intel_idle: Fix deallocation order on the driver exit path. intel_idle: Remove redundant initialization calls. intel_idle: Fix a helper function's return value. intel_idle: remove useless return from void function. ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Stale SKB data pointer access across pskb_may_pull() calls in L2TP, from Haishuang Yan. 2) Fix multicast frame handling in mac80211 AP code, from Felix Fietkau. 3) mac80211 station hashtable insert errors not handled properly, fix from Johannes Berg. 4) Fix TX descriptor count limit handling in e1000, from Alexander Duyck. 5) Revert a buggy netdev refcount fix in netpoll, from Bjorn Helgaas. 6) Must assign rtnl_link_ops of the device before registering it, fix in ip6_tunnel from Thadeu Lima de Souza Cascardo. 7) Memory leak fix in tc action net exit, from WANG Cong. 8) Add missing AF_KCM entries to name tables, from Dexuan Cui. 9) Fix regression in GRE handling of csums wrt. FOU, from Alexander Duyck. 10) Fix memory allocation alignment and congestion map corruption in RDS, from Shamir Rabinovitch. 11) Fix default qdisc regression in tuntap driver, from Jason Wang. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits) bridge, netem: mark mailing lists as moderated tuntap: restore default qdisc mpls: find_outdev: check for err ptr in addition to NULL check ipv6: Count in extension headers in skb->network_header RDS: fix congestion map corruption for PAGE_SIZE > 4k RDS: memory allocated must be align to 8 GRE: Disable segmentation offloads w/ CSUM and we are encapsulated via FOU net: add the AF_KCM entries to family name tables MAINTAINERS: intel-wired-lan list is moderated lib/test_bpf: Add additional BPF_ADD tests lib/test_bpf: Add test to check for result of 32-bit add that overflows lib/test_bpf: Add tests for unsigned BPF_JGT lib/test_bpf: Fix JMP_JSET tests VSOCK: Detach QP check should filter out non matching QPs. stmmac: fix adjust link call in case of a switch is attached af_packet: tone down the Tx-ring unsupported spew. net_sched: fix a memory leak in tc action samples/bpf: Enable powerpc support samples/bpf: Use llc in PATH, rather than a hardcoded value samples/bpf: Fix build breakage with map_perf_test_user.c ...
-
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
Pull btrfs fixes from Chris Mason: "These are bug fixes, including a really old fsync bug, and a few trace points to help us track down problems in the quota code" * 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: fix file/data loss caused by fsync after rename and new inode btrfs: Reset IO error counters before start of device replacing btrfs: Add qgroup tracing Btrfs: don't use src fd for printk btrfs: fallback to vmalloc in btrfs_compare_tree btrfs: handle non-fatal errors in btrfs_qgroup_inherit() btrfs: Output more info for enospc_debug mount option Btrfs: fix invalid reference in replace_path Btrfs: Improve FL_KEEP_SIZE handling in fallocate
-
git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linuxLinus Torvalds authored
Pull orangefs fixes from Mike Marshall: "Orangefs cleanups and a strncpy vulnerability fix. Cleanups: - remove an unused variable from orangefs_readdir. - clean up printk wrapper used for ofs "gossip" debugging. - clean up truncate ctime and mtime setting in inode.c - remove a useless null check found by coccinelle. - optimize some memcpy/memset boilerplate code. - remove some useless sanity checks from xattr.c Fix: - fix a potential strncpy vulnerability" * tag 'for-linus-4.6-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux: orangefs: remove unused variable orangefs: Add KERN_<LEVEL> to gossip_<level> macros orangefs: strncpy -> strscpy orangefs: clean up truncate ctime and mtime setting Orangefs: fix ifnullfree.cocci warnings Orangefs: optimize boilerplate code. Orangefs: xattr.c cleanup
-
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull IOMMU fixes from Joerg Roedel: - compile-time fixes (warnings and failures) - a bug in iommu core code which could cause the group->domain pointer to be falsly cleared - fix in scatterlist handling of the ARM common DMA-API code - stall detection fix for the Rockchip IOMMU driver * tag 'iommu-fixes-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/vt-d: Silence an uninitialized variable warning iommu/rockchip: Fix "is stall active" check iommu: Don't overwrite domain pointer when there is no default_domain iommu/dma: Restore scatterlist offsets correctly iommu: provide of_xlate pointer unconditionally
-
Wolfram Sang authored
Make sure we avoid a division-by-zero OOPS in case clock-frequency is set too low in DT. Add missing '\n' while we are here. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Axel Lin <axel.lin@ingics.com>
-
Wolfram Sang authored
This reverts commit 34cf2acd. 'ret' is not set when bailing out. Also, there is a better place to check for 0. Reported-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
-
- 08 Apr, 2016 1 commit
-
-
Greg Kroah-Hartman authored
Merge tag 'usb-serial-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus Johan writes: USB-serial fixes for v4.6-rc3 Here are some new device ids. Signed-off-by: Johan Hovold <johan@kernel.org>
-