Messages in this thread | | | From | Arnaldo Carvalho de Melo <> | Subject | [GIT PULL 0/8] perf/core improvements and fixes | Date | Tue, 15 Sep 2015 12:28:29 -0300 |
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Hi Ingo,
Please consider pulling,
- Arnaldo
The following changes since commit 9059b284caecb628fac826c2c5cc8ee85708eec1:
Merge tag 'perf-core-for-mingo-2' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2015-09-15 08:50:59 +0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
for you to fetch changes up to bbbe6bf6037d77816c4a19aaf35f4cecf662b49a:
perf tools: Introduce regs_query_register_offset() for x86 (2015-09-15 09:48:33 -0300)
---------------------------------------------------------------- perf/core improvements and fixes:
User visible:
- Enhance the error reporting of tracepoint event parsing, e.g.:
$ oldperf record -e sched:sched_switc usleep 1 event syntax error: 'sched:sched_switc' \___ unknown tracepoint Run 'perf list' for a list of valid events
Now we get the much nicer:
$ perf record -e sched:sched_switc ls event syntax error: 'sched:sched_switc' \___ can't access trace events
Error: No permissions to read /sys/kernel/debug/tracing/events/sched/sched_switc Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug'
And after we have those mount point permissions fixed:
$ perf record -e sched:sched_switc ls event syntax error: 'sched:sched_switc' \___ unknown tracepoint
Error: File /sys/kernel/debug/tracing/events/sched/sched_switc not found. Hint: Perhaps this kernel misses some CONFIG_ setting to enable this feature?.
Now its just a matter of using what git uses to suggest alternatives when we make a typo, i.e. that it is just an 'h' missing :-)
I.e. basically now the event parsing routing uses the strerror_open() routines introduced by and used in 'perf trace' work. (Jiri Olsa)
Infrastructure:
- Export init/exit_probe_symbol_maps() from 'perf probe' for use in eBPF (Namhyung Kim)
- Free perf_probe_event in cleanup_perf_probe_events() (Namhyung Kim)
- regs_query_register_offset() infrastructure + implementation for x86. First user will be the perf/eBPF code (Wang Nan)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---------------------------------------------------------------- Jiri Olsa (4): tools: Add err.h with ERR_PTR PTR_ERR interface perf tools: Propagate error info for the tracepoint parsing perf evsel: Propagate error info from tp_format perf tools: Enhance parsing events tracepoint error output
Namhyung Kim (2): perf probe: Free perf_probe_event in cleanup_perf_probe_events() perf probe: Export init/exit_probe_symbol_maps()
Wang Nan (2): perf tools: regs_query_register_offset() infrastructure perf tools: Introduce regs_query_register_offset() for x86
tools/include/linux/err.h | 49 +++++++++++ tools/perf/arch/x86/Makefile | 1 + tools/perf/arch/x86/util/dwarf-regs.c | 122 ++++++++++++++++++++-------- tools/perf/builtin-probe.c | 5 ++ tools/perf/builtin-trace.c | 19 +++-- tools/perf/config/Makefile | 4 + tools/perf/tests/evsel-tp-sched.c | 10 ++- tools/perf/tests/mmap-basic.c | 3 +- tools/perf/tests/openat-syscall-all-cpus.c | 3 +- tools/perf/tests/openat-syscall-tp-fields.c | 3 +- tools/perf/tests/openat-syscall.c | 3 +- tools/perf/util/evlist.c | 3 +- tools/perf/util/evsel.c | 16 +++- tools/perf/util/evsel.h | 3 + tools/perf/util/include/dwarf-regs.h | 8 ++ tools/perf/util/parse-events.c | 66 +++++++++++---- tools/perf/util/parse-events.h | 3 +- tools/perf/util/parse-events.y | 16 ++-- tools/perf/util/probe-event.c | 32 ++++---- tools/perf/util/probe-event.h | 2 + tools/perf/util/trace-event.c | 15 +++- 21 files changed, 291 insertions(+), 95 deletions(-) create mode 100644 tools/include/linux/err.h
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