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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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perf/core improvements and fixes:
User visible: - Fix bug 'perf stat' in handling events in error state (Stephane Eranian) Documentation: - Add usage of --no-syscalls in 'perf trace' man page (Ravi Bangoria) Infrastructure: - Pass PYTHON config to feature detection (David Carrillo-Cisneros) - Disable JVMTI if no ELF support available (David Carrillo-Cisneros) - Fix feature detection redefinion of build flags (David Carrillo-Cisneros) - Hint missing file when tool tips fail to load (David Carrillo-Cisneros) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJY787nAAoJENZQFvNTUqpA8+0P/jbf9YKzxKI+/aBAX7VjV0of hMcUFUBBo2w5xLmUJAq7n2izTZLuFiVP1O2qtag2IoXVTfF8jnF+TwG9C9eI7Nub YhbnB0Mu7NbGqhNaVkvz+VI/IRWpTmAAxsjhNX3ooDvklX7SFPDshuW+AJVSlrDA 6rAmCu802HwpquAI1tC5b2OZGXrFMwR36DoeRWHQnEg8my+6OkLsYEAcHM8PC9xp 3wQo9900clT5WYkeOzCwjcDkpgySAsnsH88dmCew5NeiUA0o/GaucZ+r2GbAEtzO xUUsc7HlecqeA6Qg4PCN2BgNew7UY2IFflz3oEwVDBC7EgHdC+XQ6gAv56djcHCO GCPdmRkzdNAM8iJM9VArUSQP0jMWKLBuXcWlL1luKCkb7+BXanIFSn0Uf/bUMfJm ifG/9gDwCDRkIrLFMQj4Utgn3zyfOzgnobKAXaDVc449xsnIjwI6fSwTo7NxQeoN XbDCAG6NGDmQrjVArETdzkw5TZFsUfJHi+f062HdwROhp1vtY61mLNU4lhJzY/00 w4HBw6nRkkKHlbtccASPhM+DLrmjnjhc6pmBbaxTjTUt5v7opsRZFeoLh8D0swxG ySIZVqSaIMwkfeFImOlYwELFhATICDNkaLDDiSbceXpZbvfNuVpgwNPyn23we/xa rzOQdi3lJ1yuPBciefc0 =qXes -----END PGP SIGNATURE----- Merge tag 'perf-core-for-mingo-4.12-20170413' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core Pull perf/core improvements and fixes Arnaldo Carvalho de Melo: User visible changes: - Fix 'perf stat' bug in handling events in error state (Stephane Eranian) Documentation changes: - Add usage of --no-syscalls in 'perf trace' man page (Ravi Bangoria) Infrastructure changes: - Pass PYTHON config to feature detection (David Carrillo-Cisneros) - Disable JVMTI if no ELF support available (David Carrillo-Cisneros) - Fix feature detection redefinion of build flags (David Carrillo-Cisneros) - Hint missing file when tool tips fail to load (David Carrillo-Cisneros) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
commit
e720c19e0d
@ -53,17 +53,17 @@ FILES= \
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FILES := $(addprefix $(OUTPUT),$(FILES))
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CC ?= $(CROSS_COMPILE)gcc -MD
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CXX ?= $(CROSS_COMPILE)g++ -MD
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PKG_CONFIG := $(CROSS_COMPILE)pkg-config
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CC ?= $(CROSS_COMPILE)gcc
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CXX ?= $(CROSS_COMPILE)g++
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PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
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LLVM_CONFIG ?= llvm-config
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all: $(FILES)
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__BUILD = $(CC) $(CFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
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__BUILD = $(CC) $(CFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
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BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1
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__BUILDXX = $(CXX) $(CXXFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)
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__BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)
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BUILDXX = $(__BUILDXX) > $(@:.bin=.make.output) 2>&1
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###############################
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@ -175,7 +175,7 @@ $(OUTPUT)test-libperl.bin:
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$(BUILD) $(FLAGS_PERL_EMBED)
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$(OUTPUT)test-libpython.bin:
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$(BUILD)
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$(BUILD) $(FLAGS_PYTHON_EMBED)
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$(OUTPUT)test-libpython-version.bin:
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$(BUILD)
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@ -123,7 +123,8 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
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major or all pagefaults. Default value is maj.
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--syscalls::
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Trace system calls. This options is enabled by default.
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Trace system calls. This options is enabled by default, disable with
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--no-syscalls.
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--call-graph [mode,type,min[,limit],order[,key][,branch]]::
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Setup and enable call-graph (stack chain/backtrace) recording.
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@ -170,13 +170,20 @@ PYTHON2_CONFIG := \
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override PYTHON_CONFIG := \
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$(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON2_CONFIG))
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grep-libs = $(filter -l%,$(1))
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strip-libs = $(filter-out -l%,$(1))
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PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
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PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)
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PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null)
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ifeq ($(CC), clang)
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PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))
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ifdef PYTHON_CONFIG
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PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)
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PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
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PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
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PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null)
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ifeq ($(CC), clang)
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PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))
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endif
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FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
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endif
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FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)
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@ -267,6 +274,7 @@ ifdef NO_LIBELF
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NO_LIBUNWIND := 1
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NO_LIBDW_DWARF_UNWIND := 1
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NO_LIBBPF := 1
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NO_JVMTI := 1
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else
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ifeq ($(feature-libelf), 0)
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ifeq ($(feature-glibc), 1)
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@ -276,7 +284,7 @@ else
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LIBC_SUPPORT := 1
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endif
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ifeq ($(LIBC_SUPPORT),1)
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msg := $(warning No libelf found, disables 'probe' tool and BPF support in 'perf record', please install libelf-dev, libelf-devel or elfutils-libelf-devel);
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msg := $(warning No libelf found. Disables 'probe' tool, jvmti and BPF support in 'perf record'. Please install libelf-dev, libelf-devel or elfutils-libelf-devel);
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NO_LIBELF := 1
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NO_DWARF := 1
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@ -284,6 +292,7 @@ else
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NO_LIBUNWIND := 1
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NO_LIBDW_DWARF_UNWIND := 1
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NO_LIBBPF := 1
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NO_JVMTI := 1
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else
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ifneq ($(filter s% -static%,$(LDFLAGS),),)
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msg := $(error No static glibc found, please install glibc-static);
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@ -554,8 +563,6 @@ ifndef NO_GTK2
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endif
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endif
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grep-libs = $(filter -l%,$(1))
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strip-libs = $(filter-out -l%,$(1))
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ifdef NO_LIBPERL
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CFLAGS += -DNO_LIBPERL
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@ -603,21 +610,9 @@ else
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$(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)
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else
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PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))
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PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)
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PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
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PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
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PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null)
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ifeq ($(CC), clang)
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PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))
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endif
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FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)
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ifneq ($(feature-libpython), 1)
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$(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev)
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else
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ifneq ($(feature-libpython-version), 1)
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$(warning Python 3 is not yet supported; please set)
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$(warning PYTHON and/or PYTHON_CONFIG appropriately.)
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@ -312,8 +312,12 @@ static int read_counter(struct perf_evsel *counter)
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struct perf_counts_values *count;
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count = perf_counts(counter->counts, cpu, thread);
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if (perf_evsel__read(counter, cpu, thread, count))
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if (perf_evsel__read(counter, cpu, thread, count)) {
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counter->counts->scaled = -1;
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perf_counts(counter->counts, cpu, thread)->ena = 0;
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perf_counts(counter->counts, cpu, thread)->run = 0;
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return -1;
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}
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if (STAT_RECORD) {
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if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
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@ -338,12 +342,14 @@ static int read_counter(struct perf_evsel *counter)
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static void read_counters(void)
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{
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struct perf_evsel *counter;
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int ret;
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evlist__for_each_entry(evsel_list, counter) {
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if (read_counter(counter))
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ret = read_counter(counter);
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if (ret)
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pr_debug("failed to read counter %s\n", counter->name);
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if (perf_stat_process_counter(&stat_config, counter))
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if (ret == 0 && perf_stat_process_counter(&stat_config, counter))
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pr_warning("failed to process counter %s\n", counter->name);
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}
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}
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@ -1,5 +1,5 @@
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#include <linux/types.h>
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#include <linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
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#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
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#include <api/fs/fs.h>
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#include "event.h"
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#include "debug.h"
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@ -1239,7 +1239,7 @@ int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
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if (FD(evsel, cpu, thread) < 0)
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return -EINVAL;
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if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) < 0)
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if (readn(FD(evsel, cpu, thread), count, sizeof(*count)) <= 0)
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return -errno;
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return 0;
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@ -1257,7 +1257,7 @@ int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
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if (evsel->counts == NULL && perf_evsel__alloc_counts(evsel, cpu + 1, thread + 1) < 0)
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return -ENOMEM;
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if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) < 0)
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if (readn(FD(evsel, cpu, thread), &count, nv * sizeof(u64)) <= 0)
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return -errno;
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perf_evsel__compute_deltas(evsel, cpu, thread, &count);
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@ -696,7 +696,8 @@ const char *perf_tip(const char *dirpath)
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tips = strlist__new("tips.txt", &conf);
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if (tips == NULL)
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return errno == ENOENT ? NULL : "Tip: get more memory! ;-p";
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return errno == ENOENT ? NULL :
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"Tip: check path of tips.txt or get more memory! ;-p";
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if (strlist__nr_entries(tips) == 0)
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goto out;
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