- 11 2月, 2015 2 次提交
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由 Vinson Lee 提交于
The token STT_GNU_IFUNC is not available with glibc 2.9 and older. Define this token if it is not already defined. This patch fixes this build errors with older versions of glibc. CC util/symbol-elf.o util/symbol-elf.c: In function ‘elf_sym__is_function’: util/symbol-elf.c:75: error: ‘STT_GNU_IFUNC’ undeclared (first use in this function) util/symbol-elf.c:75: error: (Each undeclared identifier is reported only once util/symbol-elf.c:75: error: for each function it appears in.) make: *** [util/symbol-elf.o] Error 1 Signed-off-by: NVinson Lee <vlee@twitter.com> Acked-by: NNamhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Anton Blanchard <anton@samba.org> Cc: Avi Kivity <avi@cloudius-systems.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Waiman Long <Waiman.Long@hp.com> Cc: stable@vger.kernel.org # 3.17+ Link: http://lkml.kernel.org/r/1423528286-13630-1-git-send-email-vlee@twopensource.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Steven Rostedt (Red Hat) 提交于
As tracefs may be mounted instead of debugfs to get to the event directories, have perf know about tracefs, and use that file system over debugfs if it is present. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193553.340946602@goodmis.org [ Fixed up error messages about tracefs pointed out by Namhyung ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 07 2月, 2015 7 次提交
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由 Steven Rostedt (Red Hat) 提交于
Add tracefs_configured() to return true if tracefs is configured in the kernel (succeeds to find tracefs), and debugfs_configured() if debugfs is configured in the kernel (succeeds to find debugfs). Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193553.190606690@goodmis.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Steven Rostedt (Red Hat) 提交于
Instead of hard coding "/sys/kernel/debug" everywhere, create a macro to hold where the default path exists. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193553.032117017@goodmis.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Steven Rostedt (Red Hat) 提交于
Since tracefs will now hold the event directory for perf, and even though by default, debugfs still mounts tracefs on the debugfs/tracing directory, the system admin may now choose to not mount debugfs and instead just mount tracefs instead. Having tracefs helper functions will facilitate having perf look for tracefs first, and then try debugfs as a fallback. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193552.898934751@goodmis.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Steven Rostedt (Red Hat) 提交于
In preparation for adding tracefs for perf to use, create a findfs helper utility that find_debugfs uses instead of hard coding the search in the code. This will allow for a find_tracefs to be used as well. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193552.735023362@goodmis.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Steven Rostedt (Red Hat) 提交于
It's rather strange to be checking the debugfs MAGIC number for the tracing directory. A system admin may want to have a custom set of events to trace and it should be allowed to let the admin make a temp file (even for tracing virtual boxes, this is useful). Also with the coming tracefs, the files may not even be under debugfs, so checking the debugfs MAGIC number is pointless. Signed-off-by: NSteven Rostedt <rostedt@goodmis.org> Acked-by: NJiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193552.546175764@goodmis.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
As they will have perf_event_attr.enable_on_exec set, starting as soon as we exec() the workload. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-vmj3f6o3vxrg7mrdipts09li@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 06 2月, 2015 9 次提交
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由 Arnaldo Carvalho de Melo 提交于
The existing one, event_format__print() uses stdout unconditionally, and 'perf trace' needs to use it to format into a file that may have been set by the user, i.e. 'trace -o file.output'. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-7l0mgm91hwg0bby00s5pse8r@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Arnaldo Carvalho de Melo 提交于
So that we can specify a FILE object where to direct the formatted output. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-a49bhdrx8851f04hppn8bqxq@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Victor Kamensky 提交于
Currently code that tries to read corresponding debug symbol file from .gnu_debuglink section (DSO_BINARY_TYPE__DEBUGLINK) does not take in account symfs option, so filename__read_debuglink function cannot open ELF file, if symfs option is used. Fix is to add proper handling of symfs as it is done in other places: use __symbol__join_symfs function to get real file name of target ELF file. Signed-off-by: NVictor Kamensky <victor.kamensky@linaro.org> Tested-by: NDavid Ahern <dsahern@gmail.com> Acked-by: NDavid Ahern <dsahern@gmail.com> Acked-by: NNamhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Anton Blanchard <anton@samba.org> Cc: Avi Kivity <avi@cloudius-systems.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Russell King <linux@arm.linux.org.uk> Cc: Waiman Long <Waiman.Long@hp.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1422340442-4673-3-git-send-email-victor.kamensky@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Victor Kamensky 提交于
Aarch64 ELF files use mapping symbols with special names $x, $d to identify regions of Aarch64 code (see Aarch64 ELF ABI - "ARM IHI 0056B", section "4.5.4 Mapping symbols"). The patch filters out these symbols at load time, similar to "696b97a5 perf symbols: Ignore mapping symbols on ARM" changes done for ARM before V8. Also added handling of mapping symbols that has format "$d.<any>" and similar for both cases. Note we are not making difference between EM_ARM and EM_AARCH64 mapping symbols instead code handles superset of both. Signed-off-by: NVictor Kamensky <victor.kamensky@linaro.org> Acked-by: NNamhyung Kim <namhyung@kernel.org> Acked-by: NWill Deacon <will.deacon@arm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Anton Blanchard <anton@samba.org> Cc: Avi Kivity <avi@cloudius-systems.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Russell King <linux@arm.linux.org.uk> Link: http://lkml.kernel.org/r/1422340442-4673-2-git-send-email-victor.kamensky@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Update Documentation/perf-probe.txt to add descriptions of some newer options. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150130093746.30575.8571.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Masami Hiramatsu 提交于
Fix to handle optimized no-inline functions which have only function definition but no actual instance at that point. To fix this problem, we need to find actual instance of the function. Without this patch: ---- # perf probe -a __up Failed to get entry address of __up. Error: Failed to add events. # perf probe -L __up Specified source line is not found. Error: Failed to show lines. ---- With this patch: ---- # perf probe -a __up Added new event: probe:__up (on __up) You can now use it in all perf tools, such as: perf record -e probe:__up -aR sleep 1 # perf probe -L __up <__up@/home/fedora/ksrc/linux-3/kernel/locking/semaphore.c:0> 0 static noinline void __sched __up(struct semaphore *sem) { struct semaphore_waiter *waiter = list_first_entry(&sem->wait_ struct semaphore_waite 4 list_del(&waiter->list); 5 waiter->up = true; 6 wake_up_process(waiter->task); 7 } ---- Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150130093744.30575.43290.stgit@localhost.localdomainSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
It's not related to mmap, remove it from the message. Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1422585209-32742-3-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
Do not rely on dso__data_read_offset() will always call dso__data_fd() internally. With multi-thread support, accessing a fd will be protected by a lock and it'll cause a huge contention. It can be avoided since we can skip reading from file if there's a data in the dso cache. If one needs to call the dso__data_read_offset(), [s]he also needs to call dso__data_fd() (or set dso->binary_type at least) first like the dwarf unwind code does. Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1422585209-32742-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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由 Namhyung Kim 提交于
The current dso cache permits to keep dso->data.fd is open under a half of open file limit. But test__dso_data_cache() sets dso_cnt to limit / 2 + 1 so it'll reach the limit in the loop even though the loop count is one less than the dso_cnt and it makes the final dso__data_fd() after the loop meaningless. I guess the intention was dsos[0]->data.fd is open before the last open and gets closed after it. So add an assert before the last open. Signed-off-by: NNamhyung Kim <namhyung@kernel.org> Acked-by: NJiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1422585209-32742-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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- 04 2月, 2015 8 次提交
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由 Mark Rutland 提交于
Currently the adjusments made as part of perf_event_task_tick() use the percpu rotation lists to iterate over any active PMU contexts, but these are not used by the context rotation code, having been replaced by separate (per-context) hrtimer callbacks. However, some manipulation of the rotation lists (i.e. removal of contexts) has remained in perf_rotate_context(). This leads to the following issues: * Contexts are not always removed from the rotation lists. Removal of PMUs which have been placed in rotation lists, but have not been removed by a hrtimer callback can result in corruption of the rotation lists (when memory backing the context is freed). This has been observed to result in hangs when PMU drivers built as modules are inserted and removed around the creation of events for said PMUs. * Contexts which do not require rotation may be removed from the rotation lists as a result of a hrtimer, and will not be considered by the unthrottling code in perf_event_task_tick. This patch fixes the issue by updating the rotation ist when events are scheduled in/out, ensuring that each rotation list stays in sync with the HW state. As each event holds a refcount on the module of its PMU, this ensures that when a PMU module is unloaded none of its CPU contexts can be in a rotation list. By maintaining a list of perf_event_contexts rather than perf_event_cpu_contexts, we don't need separate paths to handle the cpu and task contexts, which also makes the code a little simpler. As the rotation_list variables are not used for rotation, these are renamed to active_ctx_list, which better matches their current function. perf_pmu_rotate_{start,stop} are renamed to perf_pmu_ctx_{activate,deactivate}. Reported-by: NJohannes Jensen <johannes.jensen@arm.com> Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Will Deacon <Will.Deacon@arm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20150129134511.GR17721@leverpostejSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Mark Rutland 提交于
When initialising an event, perf_init_event will call try_module_get() to ensure that the PMU's module cannot be removed for the lifetime of the event, with __free_event() dropping the reference when the event is finally destroyed. If something fails after the event has been initialised, but before the event is installed, perf_event_alloc will drop the reference on the module. However, if we fail to initialise an event for some reason (e.g. we ask an uncore PMU to perform sampling, and it refuses to initialise the event), we do not drop the refcount. If we try to open such a bogus event without a precise IDR type, we will loop over each PMU in the pmus list, incrementing each of their refcounts without decrementing them. This patch adds a module_put when pmu->event_init(event) fails, ensuring that the refcounts are balanced in failure cases. As the innards of the precise and search based initialisation look very similar, this logic is hoisted out into a new helper function. While the early return for the failed try_module_get is removed from the search case, this is handled by the remaining return when ret is not -ENOENT. Signed-off-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1420642611-22667-1-git-send-email-mark.rutland@arm.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Jiri Olsa 提交于
Currently we flag available data (via poll syscall) on perf fd with POLL_IN macro, which is normally used for SIGIO interface. We've been lucky, because POLLIN (0x1) is subset of POLL_IN (0x20001) and sys_poll (do_pollfd function) cut the extra bit out (0x20000). Signed-off-by: NJiri Olsa <jolsa@kernel.org> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1422467678-22341-1-git-send-email-jolsa@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra 提交于
So what I suspect; but I'm in zombie mode today it seems; is that while I initially thought that it was impossible for ctx to change when refcount dropped to 0, I now suspect its possible. Note that until perf_remove_from_context() the event is still active and visible on the lists. So a concurrent sys_perf_event_open() from another task into this task can race. Reported-by: NVince Weaver <vincent.weaver@maine.edu> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Stephane Eranian <eranian@gmail.com> Cc: mark.rutland@arm.com Cc: Jiri Olsa <jolsa@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20150129134434.GB26304@twins.programming.kicks-ass.netSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra (Intel) 提交于
Jiri reported triggering the new WARN_ON_ONCE in event_sched_out over the weekend: event_sched_out.isra.79+0x2b9/0x2d0 group_sched_out+0x69/0xc0 ctx_sched_out+0x106/0x130 task_ctx_sched_out+0x37/0x70 __perf_install_in_context+0x70/0x1a0 remote_function+0x48/0x60 generic_exec_single+0x15b/0x1d0 smp_call_function_single+0x67/0xa0 task_function_call+0x53/0x80 perf_install_in_context+0x8b/0x110 I think the below should cure this; if we install a group leader it will iterate the (still intact) group list and find its siblings and try and install those too -- even though those still have the old event->ctx -- in the new ctx. Upon installing the first group sibling we'd try and schedule out the group and trigger the above warn. Fix this by installing the group leader last, installing siblings would have no effect, they're not reachable through the group lists and therefore we don't schedule them. Also delay resetting the state until we're absolutely sure the events are quiescent. Reported-by: NJiri Olsa <jolsa@redhat.com> Reported-by: vincent.weaver@maine.edu Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20150126162639.GA21418@twins.programming.kicks-ass.netSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra 提交于
There have been a few reported issues wrt. the lack of locking around changing event->ctx. This patch tries to address those. It avoids the whole rwsem thing; and while it appears to work, please give it some thought in review. What I did fail at is sensible runtime checks on the use of event->ctx, the RCU use makes it very hard. Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20150123125834.209535886@infradead.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Peter Zijlstra 提交于
Add a few WARN()s to catch things that should never happen. Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/20150123125834.150481799@infradead.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@kernel.org>
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- 02 2月, 2015 6 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc由 Linus Torvalds 提交于
Pull ARM SoC fixes from Olof Johansson: "One more week's worth of fixes. Worth pointing out here are: - A patch fixing detaching of iommu registrations when a device is removed -- earlier the ops pointer wasn't managed properly - Another set of Renesas boards get the same GIC setup fixup as others have in previous -rcs - Serial port aliases fixups for sunxi. We did the same to tegra but we caught that in time before the merge window due to more machines being affected. Here it took longer for anyone to notice. - A couple more DT tweaks on sunxi - A follow-up patch for the mvebu coherency disabling in last -rc batch" * tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm: dma-mapping: Set DMA IOMMU ops in arm_iommu_attach_device() ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds ARM: mvebu: don't set the PL310 in I/O coherency mode when I/O coherency is disabled ARM: sunxi: dt: Fix aliases ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline ARM: dts: sun6i: ippo-q8h-v5: Fix serial0 alias ARM: dts: sunxi: Fix usb-phy support for sun4i/sun5i
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input由 Linus Torvalds 提交于
Pull input layer updates from Dmitry Torokhov: "Just a few quirks for PS/2 this time" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elantech - add more Fujtisu notebooks to force crc_enabled Input: i8042 - add noloop quirk for Medion Akoya E7225 (MD98857) Input: synaptics - adjust min/max for Lenovo ThinkPad X1 Carbon 2nd
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由 Linus Torvalds 提交于
Commit 8eb23b9f ("sched: Debug nested sleeps") added code to report on nested sleep conditions, which we generally want to avoid because the inner sleeping operation can re-set the thread state to TASK_RUNNING, but that will then cause the outer sleep loop not actually sleep when it calls schedule. However, that's actually valid traditional behavior, with the inner sleep being some fairly rare case (like taking a sleeping lock that normally doesn't actually need to sleep). And the debug code would actually change the state of the task to TASK_RUNNING internally, which makes that kind of traditional and working code not work at all, because now the nested sleep doesn't just sometimes cause the outer one to not block, but will cause it to happen every time. In particular, it will cause the cardbus kernel daemon (pccardd) to basically busy-loop doing scheduling, converting a laptop into a heater, as reported by Bruno Prémont. But there may be other legacy uses of that nested sleep model in other drivers that are also likely to never get converted to the new model. This fixes both cases: - don't set TASK_RUNNING when the nested condition happens (note: even if WARN_ONCE() only _warns_ once, the return value isn't whether the warning happened, but whether the condition for the warning was true. So despite the warning only happening once, the "if (WARN_ON(..))" would trigger for every nested sleep. - in the cases where we knowingly disable the warning by using "sched_annotate_sleep()", don't change the task state (that is used for all core scheduling decisions), instead use '->task_state_change' that is used for the debugging decision itself. (Credit for the second part of the fix goes to Oleg Nesterov: "Can't we avoid this subtle change in behaviour DEBUG_ATOMIC_SLEEP adds?" with the suggested change to use 'task_state_change' as part of the test) Reported-and-bisected-by: NBruno Prémont <bonbons@linux-vserver.org> Tested-by: NRafael J Wysocki <rjw@rjwysocki.net> Acked-by: NOleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de>, Cc: Ilya Dryomov <ilya.dryomov@inktank.com>, Cc: Mike Galbraith <umgwanakikbuti@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Hurley <peter@hurleysoftware.com>, Cc: Davidlohr Bueso <dave@stgolabs.net>, Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Rainer Koenig 提交于
Add two more Fujitsu LIFEBOOK models that also ship with the Elantech touchpad and don't work with crc_disabled to the quirk list. Signed-off-by: NRainer Koenig <Rainer.Koenig@ts.fujitsu.com> Cc: stable@vger.kernel.org Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
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由 Olof Johansson 提交于
Merge tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes Merge "Third Round of Renesas ARM Based SoC Fixes for v3.19" from Simon Horman: * Instantiate GIC from C board code in legacy builds on r8a7790 and r8a73a4 * tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds Signed-off-by: NOlof Johansson <olof@lixom.net>
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- 01 2月, 2015 1 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux由 Linus Torvalds 提交于
Pull i2c fixes from Wolfram Sang: "i2c driver bugfixes (s3c2410, slave-eeprom, sh_mobile), size regression "bugfix" (i2c slave), documentation bugfix (st). Also, one documentation update (da9063), so some devicetrees can now be verified" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: sh_mobile: terminate DMA reads properly i2c: Only include slave support if selected i2c: s3c2410: fix ABBA deadlock by keeping clock prepared i2c: slave-eeprom: fix boundary check when using sysfs i2c: st: Rename clock reference to something that exists DT: i2c: Add devices handled by the da9063 MFD driver
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- 31 1月, 2015 7 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc由 Linus Torvalds 提交于
Pull char/misc driver fixes from Greg KH: "Here are two tiny patches, one fixing up the drivers/Kconfig file, and one adding a MAINTAINERS entry for the UIO git tree" * tag 'char-misc-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: drivers/Kconfig: remove duplicate entry for soc MAINTAINERS: add git url entry for UIO
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging由 Linus Torvalds 提交于
Pull staging tree fixes from Greg KH: "Here are two tiny staging tree fixes. One for the nvec driver to resolve a reported problem, and one to add a MAINTAINERS entry for the Android drivers" * tag 'staging-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: MAINTAINERS: add Android driver entries staging: nvec: specify a platform-device base id
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb由 Linus Torvalds 提交于
Pull USB fixes from Greg KH: "Here are some small USB fixes and quirk additions for 3.19-rc7. All have been in linux-next for a while with no reported problems" * tag 'usb-3.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: Add OTG PET device to TPL usb-storage/SCSI: blacklist FUA on JMicron 152d:2566 USB-SATA controller uas: Add no-report-opcodes quirk for Simpletech devices with id 4971:8017 storage: Revise/fix quirk for 04E6:000F SCM USB-SCSI converter usb: phy: never defer probe in non-OF case usb: dwc2: call dwc2_is_controller_alive() under spinlock
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip由 Linus Torvalds 提交于
Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, but also an event groups fix, two PMU driver fixes and a CPU model variant addition" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Tighten (and fix) the grouping condition perf/x86/intel: Add model number for Airmont perf/rapl: Fix crash in rapl_scale() perf/x86/intel/uncore: Move uncore_box_init() out of driver initialization perf probe: Fix probing kretprobes perf symbols: Introduce 'for' method to iterate over the symbols with a given name perf probe: Do not rely on map__load() filter to find symbols perf symbols: Introduce method to iterate symbols ordered by name perf symbols: Return the first entry with a given name in find_by_name method perf annotate: Fix memory leaks in LOCK handling perf annotate: Handle ins parsing failures perf scripting perl: Force to use stdbool perf evlist: Remove extraneous 'was' on error message
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs由 Linus Torvalds 提交于
Pull btrfs fix from Chris Mason: "We have one more fix for btrfs in my for-linus branch - this was a bug in the new raid5/6 scrubbing support" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: fix raid56 scrub failed in xfstests btrfs/072
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs由 Linus Torvalds 提交于
Pull quota and UDF fix from Jan Kara: "A fix for UDF to properly free preallocated blocks and a fix for quota so that Q_GETQUOTA quotactl reports correct numbers for XFS filesystem (and similarly Q_XGETQUOTA quotactl works properly for other filesystems)" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: quota: Switch ->get_dqblk() and ->set_dqblk() to use bytes as space units udf: Release preallocation on last writeable close
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
Pull KVM fixes from Paolo Bonzini: "The ARM changes are largish, but not too scary. And a simple fix for x86 (bug introduced in 3.19)" (Paolo sayus these are the "Final" fixes. We'll see). * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: check LAPIC presence when building apic_map arm/arm64: KVM: Use kernel mapping to perform invalidation on page fault arm/arm64: KVM: Invalidate data cache on unmap arm/arm64: KVM: Use set/way op trapping to track the state of the caches
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