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linux/tools/perf/util
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Mark Rutland 66ec11919a perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU 
Currently, perf record is broken on arm/arm64 systems when the PMU is
specified explicitly as part of the event, e.g.

$ ./perf record -e armv8_cortex_a53/cpu_cycles/u true

In such cases, perf record fails to open events unless
perf_event_paranoid is set to -1, even if the PMU in question supports
mode exclusion. Further, even when perf_event_paranoid is toggled, no
samples are recorded.

This is an unintended side effect of commit:

  e3ba76deef ("perf tools: Force uncore events to system wide monitoring)

... which assumes that if a PMU has an associated cpu_map, it is an
uncore PMU, and forces events for such PMUs to be system-wide.

This is not true for arm/arm64 systems, which can have heterogeneous
CPUs. To account for this, multiple CPU PMUs are exposed, each with a
"cpus" field under sysfs, which the perf tool parses into a cpu_map. ARM
PMUs do not have a "cpumask" file, and only have a "cpus" file. For the
gory details as to why, see commit:

 7e3fcffe95 ("perf pmu: Support alternative sysfs cpumask")

Given all of this, we can instead identify uncore PMUs by explicitly
checking for a "cpumask" file, and restore arm/arm64 PMU support back to
a working state. This patch does so, adding a new perf_pmu::is_uncore
field, and splitting the existing cpumask parsing so that it can be
reused.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by Will Deacon <will.deacon@arm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: 4.12+ <stable@vger.kernel.org>
Fixes: e3ba76deef ("perf tools: Force uncore events to system wide monitoring)
Link: http://lkml.kernel.org/r/1507315102-5942-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-10-09 15:48:46 -03:00
..
c++ perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
include perf probe: Support probing on offline cross-arch binary 2016-09-01 12:41:09 -03:00
intel-pt-decoder perf tools: Robustify detection of clang binary 2017-08-28 16:44:46 -03:00
libunwind perf unwind: Fix wrongly used regs for aarch64 unwind 2016-06-23 10:30:31 -03:00
scripting-engines perf script python: Generate hooks with additional argument 2017-07-25 22:43:21 -03:00
annotate.c perf annotate stdio: Support --show-nr-samples option 2017-08-18 10:31:53 -03:00
annotate.h perf annotate: Store the sample period in each histogram bucket 2017-07-21 12:02:38 -03:00
auxtrace.c perf auxtrace: Add CPU filter support 2017-06-30 11:50:55 -03:00
auxtrace.h perf auxtrace: Add CPU filter support 2017-06-30 11:50:55 -03:00
block-range.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
block-range.h perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
bpf-loader.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
bpf-loader.h perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
bpf-prologue.c perf bpf: Fix endianness problem when loading parameters in prologue 2017-08-16 10:31:11 -03:00
bpf-prologue.h perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
branch.c perf util: Create branch.c/.h for common branch functions 2017-07-18 23:14:40 -03:00
branch.h perf report: Tag branch type/flag on "to" and tag cycles on "from" 2017-07-25 22:46:35 -03:00
Build perf tools: Add utility function to detect SMT status 2017-08-22 12:09:04 -03:00
build-id.c perf header: Add struct feat_fd for write 2017-07-18 23:14:31 -03:00
build-id.h perf header: Add struct feat_fd for write 2017-07-18 23:14:31 -03:00
cache.h tools: Adopt __printf from kernel sources 2017-06-19 15:25:26 -03:00
call-path.c perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
call-path.h perf tools: Refactor code to move call path handling out of thread-stack 2016-05-06 13:00:43 -03:00
callchain.c perf callchain: Compare dsos (as well) for CCKEY_FUNCTION 2017-10-05 10:52:54 -03:00
callchain.h perf report: Calculate the average cycles of iterations 2017-08-30 10:03:27 -03:00
cgroup.c perf cgroup: Fix refcount usage 2017-07-25 11:23:50 -03:00
cgroup.h perf cgroup: Convert cgroup_sel.refcnt from atomic_t to refcount_t 2017-03-03 19:07:14 -03:00
cloexec.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
cloexec.h tools build: Add test for sched_getcpu() 2017-03-03 19:07:19 -03:00
color.c perf tools: Uninline scnprintf() and vscnprint() 2016-07-12 15:20:24 -03:00
color.h perf tools: Remove string.h, unistd.h and sys/stat.h from util.h 2017-04-24 13:43:33 -03:00
comm.c perf tools: Remove string.h from util.h 2017-04-24 13:43:32 -03:00
comm.h
compress.h perf tools: Add compress.h for the *_decompress_to_file() headers 2017-04-24 12:33:33 -03:00
config.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
config.h perf config: Do not die when parsing u64 or int config values 2017-06-27 11:44:58 -03:00
counts.c perf tools: Move path related functions to util/path.h 2017-04-19 13:01:53 -03:00
counts.h perf stat: Use group read for event groups 2017-07-26 14:25:44 -03:00
cpumap.c perf tools: Remove include dirent.h from util.h 2017-04-19 13:01:55 -03:00
cpumap.h perf cpumap: Introduce cpu_map__snprint_mask() 2017-03-03 19:07:17 -03:00
cs-etm.h perf tools: Add coresight etm PMU record capabilities 2016-09-22 12:19:40 -03:00
ctype.c perf tools: Move sane ctype stuff from util.h to sane_ctype.h 2017-04-19 13:01:48 -03:00
data-convert-bt.c perf data: Add mmap[2] events to CTF conversion 2017-07-28 16:26:06 -03:00
data-convert-bt.h perf data ctf: Pass convert options through opts structure 2016-06-28 10:54:55 -03:00
data-convert.h perf data ctf: Add 'all' option 2016-06-28 10:54:56 -03:00
data.c perf tools: Open perf.data with O_CLOEXEC flag 2017-09-12 12:34:23 -03:00
data.h perf data: Add perf_data_file__switch() helper 2016-04-14 08:57:54 -03:00
db-export.c perf thread: Adopt get_main_thread from db-export.c 2016-05-30 12:41:43 -03:00
db-export.h perf script: Add call path id to exported sample in db export 2016-05-06 13:00:53 -03:00
debug.c perf tools: Remove poll.h and wait.h from util.h 2017-04-24 13:43:34 -03:00
debug.h tools: Adopt __printf from kernel sources 2017-06-19 15:25:26 -03:00
demangle-java.c perf tools: Move sane ctype stuff from util.h to sane_ctype.h 2017-04-19 13:01:48 -03:00
demangle-java.h
demangle-rust.c perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
demangle-rust.h perf symbols: Add Rust demangling 2016-07-12 16:12:38 -03:00
drv_configs.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
drv_configs.h perf pmu: Push configuration down to PMU driver 2016-09-22 12:19:41 -03:00
dso.c perf buildid-cache: Cache debuginfo 2017-07-18 23:14:11 -03:00
dso.h perf buildid-cache: Cache debuginfo 2017-07-18 23:14:11 -03:00
dump-insn.c perf script: Add 'brstackinsn' for branch stacks 2017-03-16 09:24:35 -03:00
dump-insn.h perf script: Add 'brstackinsn' for branch stacks 2017-03-16 09:24:35 -03:00
dwarf-aux.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
dwarf-aux.h perf probe: Match linkage name with mangled name 2016-09-29 11:17:08 -03:00
dwarf-regs.c perf tools: Add include <linux/kernel.h> where ARRAY_SIZE() is used 2017-04-19 13:01:44 -03:00
env.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
env.h perf header: Transform nodes string info to struct 2016-07-04 19:39:01 -03:00
event.c perf tools: Add feature header record to pipe-mode 2017-07-18 23:14:36 -03:00
event.h perf tools: Support new sample type for physical address 2017-09-01 14:46:00 -03:00
evlist.c perf evsel: Fix buffer overflow while freeing events 2017-08-22 11:51:31 -03:00
evlist.h perf sort: Use default sort if evlist is empty 2017-07-26 17:00:07 -03:00
evsel_fprintf.c perf script: Add --inline option for debugging 2017-05-24 08:41:48 +02:00
evsel.c perf evsel: Fix attr.exclude_kernel setting for default cycles:p 2017-09-25 10:39:45 -03:00
evsel.h perf stat: Only auto-merge events that are PMU aliases 2017-09-01 14:48:59 -03:00
expr.h perf tools: Increase maximum number of events in expressions 2017-08-22 12:19:05 -03:00
expr.y perf tools: Dedup events in expression parsing 2017-08-22 12:19:08 -03:00
find-vdso-map.c
genelf_debug.c tools: Adopt __packed from kernel sources 2017-06-19 15:27:07 -03:00
genelf.c perf jit: Generate .eh_frame/.eh_frame_hdr in DSO 2016-10-24 11:07:40 -03:00
genelf.h perf jit: Generate .eh_frame/.eh_frame_hdr in DSO 2016-10-24 11:07:40 -03:00
generate-cmdlist.sh
group.h perf stat: Basic support for TopDown in perf stat 2016-06-06 17:04:15 -03:00
header.c perf tools: Use default CPUINFO_PROC where it fits 2017-08-17 16:58:21 -03:00
header.h perf tools: Add feature header record to pipe-mode 2017-07-18 23:14:36 -03:00
help-unknown-cmd.c perf config: Do not die when parsing u64 or int config values 2017-06-27 11:44:58 -03:00
help-unknown-cmd.h
hist.c perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
hist.h perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
intel-bts.c perf intel-pt/bts: Remove unused SAMPLE_SIZE defines and bts priv array 2017-06-19 15:27:09 -03:00
intel-bts.h
intel-pt.c perf intel-pt: Synthesize new power and "ptwrite" events 2017-06-30 11:48:28 -03:00
intel-pt.h perf intel-pt: Record address filter in AUXTRACE_INFO event 2016-09-29 11:17:05 -03:00
intlist.c
intlist.h perf intlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:39:19 -03:00
jit.h
jitdump.c perf str{filter,list}: Disentangle headers 2017-04-19 13:01:52 -03:00
jitdump.h perf jit: Add unwinding support 2016-10-24 11:07:39 -03:00
kvm-stat.h
levenshtein.c perf tools: Remove needless includes from cache.h 2016-07-12 15:19:58 -03:00
levenshtein.h
llvm-utils.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
llvm-utils.h perf llvm: Extract helpers in llvm-utils.c 2016-12-05 15:51:42 -03:00
lzma.c perf tools: Add compress.h for the *_decompress_to_file() headers 2017-04-24 12:33:33 -03:00
machine.c perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
machine.h perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info 2017-03-14 11:38:23 -03:00
map.c perf maps: Lookup maps in both intitial mountns and inner mountns. 2017-07-18 23:14:09 -03:00
map.h perf maps: Lookup maps in both intitial mountns and inner mountns. 2017-07-18 23:14:09 -03:00
mem-events.c perf c2c: Fix remote HITM detection for Skylake 2017-08-28 11:05:10 -03:00
mem-events.h perf c2c report: Add struct c2c_stats::tot_hitm field 2016-11-23 10:44:05 -03:00
memswap.c perf memswap: Split the byteswap memory range wrappers from util.[ch] 2017-04-25 15:45:35 -03:00
memswap.h perf memswap: Split the byteswap memory range wrappers from util.[ch] 2017-04-25 15:45:35 -03:00
namespaces.c perf probe: Allow placing uprobes in alternate namespaces. 2017-07-18 23:14:10 -03:00
namespaces.h perf probe: Allow placing uprobes in alternate namespaces. 2017-07-18 23:14:10 -03:00
ordered-events.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
ordered-events.h perf ordered_events: Introduce reinit() 2016-04-14 08:57:54 -03:00
parse-branch-options.c perf record: Create a new option save_type in --branch-filter 2017-07-18 23:14:39 -03:00
parse-branch-options.h perf tools: Implement branch_type event parameter 2016-10-24 11:07:35 -03:00
parse-events.c perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU 2017-10-09 15:48:46 -03:00
parse-events.h perf events parse: Rename parse_events_parse arguments 2017-08-17 16:39:15 -03:00
parse-events.l perf bpf: Tighten detection of BPF events 2017-08-22 11:56:22 -03:00
parse-events.y perf events parse: Rename parse_events_parse arguments 2017-08-17 16:39:15 -03:00
parse-regs-options.c
parse-regs-options.h
path.c perf tools: Move path related functions to util/path.h 2017-04-19 13:01:53 -03:00
path.h perf tools: Move path related functions to util/path.h 2017-04-19 13:01:53 -03:00
perf_regs.c perf/sdt/x86: Move OP parser to tools/perf/arch/x86/ 2017-03-28 12:25:30 -03:00
perf_regs.h perf/sdt/x86: Move OP parser to tools/perf/arch/x86/ 2017-03-28 12:25:30 -03:00
perf-hooks-list.h perf tools: Introduce perf hooks 2016-11-29 12:13:27 -03:00
perf-hooks.c perf tools: Add include <linux/kernel.h> where ARRAY_SIZE() is used 2017-04-19 13:01:44 -03:00
perf-hooks.h perf tools: Pass context to perf hook functions 2016-12-05 15:51:42 -03:00
PERF-VERSION-GEN
pmu.c perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU 2017-10-09 15:48:46 -03:00
pmu.h perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU 2017-10-09 15:48:46 -03:00
pmu.l
pmu.y
print_binary.c perf tools: Move print_binary definitions to separate files 2017-04-19 13:01:50 -03:00
print_binary.h perf tools: Move print_binary definitions to separate files 2017-04-19 13:01:50 -03:00
probe-event.c perf probe: Fix kprobe blacklist checking condition 2017-08-29 11:14:12 -03:00
probe-event.h perf probe: Allow placing uprobes in alternate namespaces. 2017-07-18 23:14:10 -03:00
probe-file.c perf buildid-cache: Support binary objects from other namespaces 2017-07-18 23:14:11 -03:00
probe-file.h perf buildid-cache: Support binary objects from other namespaces 2017-07-18 23:14:11 -03:00
probe-finder.c perf str{filter,list}: Disentangle headers 2017-04-19 13:01:52 -03:00
probe-finder.h perf tools: Move sane ctype stuff from util.h to sane_ctype.h 2017-04-19 13:01:48 -03:00
pstack.c
pstack.h
python-ext-sources perf buildid-cache: Support binary objects from other namespaces 2017-07-18 23:14:11 -03:00
python.c perf callchain: Move callchain specific routines from util.[ch] 2017-04-24 13:43:26 -03:00
quote.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
quote.h perf quote: Disentangle headers 2016-07-12 15:19:55 -03:00
rb_resort.h perf rb_resort: Rename for_each() macros to for_each_entry() 2016-06-23 11:35:07 -03:00
rblist.c
rblist.h
record.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
sane_ctype.h perf tools: Move sane ctype stuff from util.h to sane_ctype.h 2017-04-19 13:01:48 -03:00
session.c perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
session.h perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
setns.c tools build: Add test for setns() 2017-07-18 23:14:08 -03:00
setup.py perf python: Filter out -specs=/a/b/c from the python binding cc options 2017-02-17 10:31:13 -03:00
smt.c perf tools: Add utility function to detect SMT status 2017-08-22 12:09:04 -03:00
smt.h perf tools: Add utility function to detect SMT status 2017-08-22 12:09:04 -03:00
sort.c perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
sort.h perf sort: Add sort option for physical address 2017-09-01 14:46:11 -03:00
srcline.c perf srcline: Do not consider empty files as valid srclines 2017-08-11 16:06:31 -03:00
srcline.h perf tools: Move srcline definitions to separate header 2017-04-19 13:01:50 -03:00
stat-shadow.c perf stat: Fix saved values rbtree lookup 2017-08-11 10:42:52 -03:00
stat.c perf evsel: Add read_counter() 2017-07-26 14:21:59 -03:00
stat.h perf evsel: Add read_counter() 2017-07-26 14:21:59 -03:00
strbuf.c tools lib string: Adopt prefixcmp() from perf and subcmd 2017-04-26 15:49:21 -03:00
strbuf.h tools: Adopt __printf from kernel sources 2017-06-19 15:25:26 -03:00
strfilter.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
strfilter.h
string2.h perf tools: Move extra string util functions to util/string2.h 2017-04-19 13:01:51 -03:00
string.c perf tools: Move extra string util functions to util/string2.h 2017-04-19 13:01:51 -03:00
strlist.c perf tools: Remove string.h, unistd.h and sys/stat.h from util.h 2017-04-24 13:43:33 -03:00
strlist.h perf tools: Rename strlist_for_each() macros to for_each_entry() 2016-06-23 11:35:01 -03:00
svghelper.c perf timechart: Use NSEC_PER_U?SEC 2016-08-23 15:37:33 -03:00
svghelper.h
symbol_fprintf.c perf symbols: No need to check if sym->name is NULL 2017-02-13 17:22:34 -03:00
symbol-elf.c perf test: Fix vmlinux failure on s390x 2017-09-28 13:01:42 -03:00
symbol-minimal.c perf util: Take elf_name as const string in dso__demangle_sym 2017-08-11 16:06:31 -03:00
symbol.c perf record: Fix wrong size in perf_record_mmap for last kernel module 2017-08-11 16:06:32 -03:00
symbol.h perf test: Fix vmlinux failure on s390x 2017-09-28 13:01:42 -03:00
syscalltbl.c perf tools: Fix syscalltbl build failure 2017-09-25 12:21:05 -03:00
syscalltbl.h perf syscalltbl: Support glob matching on syscall names 2017-09-01 14:45:48 -03:00
target.c perf target: str_error_r() always returns the buffer it receives 2016-07-29 11:54:35 -03:00
target.h
term.c perf tools: Don't include terminal handling headers in util.h 2017-04-19 13:01:53 -03:00
term.h
thread_map.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
thread_map.h perf thread_map: Convert thread_map.refcnt from atomic_t to refcount_t 2017-03-03 19:07:16 -03:00
thread-stack.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
thread-stack.h perf script: Add callindent option 2016-06-23 17:04:26 -03:00
thread.c perf symbols: Find symbols in different mount namespace 2017-07-18 23:14:09 -03:00
thread.h perf symbols: Find symbols in different mount namespace 2017-07-18 23:14:09 -03:00
time-utils.c perf tools: Move timestamp routines from util.h to time-utils.h 2017-04-20 13:22:44 -03:00
time-utils.h perf tools: Move timestamp routines from util.h to time-utils.h 2017-04-20 13:22:44 -03:00
tool.h perf tools: Add feature header record to pipe-mode 2017-07-18 23:14:36 -03:00
top.c
top.h perf tools: Remove sys/ioctl.h from util.h 2017-04-24 13:43:32 -03:00
trace-event-info.c perf tools: Create for_each_event macro for tracepoints iteration 2017-01-31 16:20:08 -03:00
trace-event-parse.c perf event-parse: Use pr_warning() 2017-06-27 11:08:14 -03:00
trace-event-read.c perf utils: Null terminate buf in read_ftrace_printk() 2017-03-27 15:37:35 -03:00
trace-event-scripting.c perf scripting: Don't die if scripting can't be setup, disable it 2016-10-28 11:29:44 -02:00
trace-event.c perf tools: Introduce trace_event__tp_format_id() 2016-07-12 16:14:52 -03:00
trace-event.h perf util: Save pid-cmdline mapping into tracing header 2017-01-26 11:42:59 -03:00
trigger.h perf tools: Introduce trigger class 2016-04-28 09:58:58 -03:00
tsc.c
tsc.h
units.c perf units: Move parse_tag_value() to units.[ch] 2017-04-26 15:40:31 -03:00
units.h perf units: Move parse_tag_value() to units.[ch] 2017-04-26 15:40:31 -03:00
unwind-libdw.c perf unwind: Report module before querying isactivation in dwfl unwind 2017-06-16 14:37:30 -03:00
unwind-libdw.h perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
unwind-libunwind-local.c perf report: Fix off-by-one for non-activation frames 2017-05-24 08:41:48 +02:00
unwind-libunwind.c perf unwind: Do not fail due to missing unwind support 2017-07-04 11:43:58 -03:00
unwind.h perf unwind: Provide only forward declarations for pointer types 2017-04-20 13:22:43 -03:00
usage.c perf tools: Kill die() 2017-06-27 11:49:13 -03:00
util-cxx.h perf clang: Update test case to use real BPF script 2016-12-05 15:51:44 -03:00
util.c perf util: Add const modifier to buf in "writen" function 2017-07-18 23:14:29 -03:00
util.h perf util: Add const modifier to buf in "writen" function 2017-07-18 23:14:29 -03:00
values.c perf report: Group stat values on global event id 2017-08-28 16:44:44 -03:00
values.h perf tools: Use normal error reporting when processing PERF_RECORD_READ events 2016-10-24 11:07:44 -03:00
vdso.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
vdso.h
xyarray.c perf xyarray: Save max_x, max_y 2017-08-22 11:51:28 -03:00
xyarray.h perf xyarray: Save max_x, max_y 2017-08-22 11:51:28 -03:00
zlib.c perf tools: Add compress.h for the *_decompress_to_file() headers 2017-04-24 12:33:33 -03:00