#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
+ #include <trace/events/irq.h>
+
#include "internals.h"
/**
return -EINVAL;
type &= IRQ_TYPE_SENSE_MASK;
- if (type != IRQ_TYPE_NONE)
- ret = __irq_set_trigger(desc, irq, type);
+ ret = __irq_set_trigger(desc, irq, type);
irq_put_desc_busunlock(desc, flags);
return ret;
}
__irq_enter();
}
-#ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED
static inline void invoke_softirq(void)
{
- if (!force_irqthreads)
+ if (!force_irqthreads) {
+#ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED
__do_softirq();
- else {
- __local_bh_disable((unsigned long)__builtin_return_address(0),
- SOFTIRQ_OFFSET);
- wakeup_softirqd();
- __local_bh_enable(SOFTIRQ_OFFSET);
- }
-}
#else
-static inline void invoke_softirq(void)
-{
- if (!force_irqthreads)
do_softirq();
- else {
+#endif
+ } else {
__local_bh_disable((unsigned long)__builtin_return_address(0),
SOFTIRQ_OFFSET);
wakeup_softirqd();
__local_bh_enable(SOFTIRQ_OFFSET);
}
}
-#endif
/*
* Exit an interrupt context. Process softirqs if needed and possible:
local_irq_restore(flags);
}
+ void __raise_softirq_irqoff(unsigned int nr)
+ {
+ trace_softirq_raise(nr);
+ or_softirq_pending(1UL << nr);
+ }
+
void open_softirq(int nr, void (*action)(struct softirq_action *))
{
softirq_vec[nr].action = action;
hard and soft lockups.
Softlockups are bugs that cause the kernel to loop in kernel
- mode for more than 60 seconds, without giving other tasks a
+ mode for more than 20 seconds, without giving other tasks a
chance to run. The current stack trace is displayed upon
detection and the system will stay locked up.
Hardlockups are bugs that cause the CPU to loop in kernel mode
- for more than 60 seconds, without letting other interrupts have a
+ for more than 10 seconds, without letting other interrupts have a
chance to run. The current stack trace is displayed upon detection
and the system will stay locked up.
The overhead should be minimal. A periodic hrtimer runs to
- generate interrupts and kick the watchdog task every 10-12 seconds.
- An NMI is generated every 60 seconds or so to check for hardlockups.
+ generate interrupts and kick the watchdog task every 4 seconds.
+ An NMI is generated every 10 seconds or so to check for hardlockups.
+
+ The frequency of hrtimer and NMI events and the soft and hard lockup
+ thresholds can be controlled through the sysctl watchdog_thresh.
config HARDLOCKUP_DETECTOR
def_bool LOCKUP_DETECTOR && PERF_EVENTS && HAVE_PERF_EVENTS_NMI && \
help
Say Y here to enable the kernel to panic on "hard lockups",
which are bugs that cause the kernel to loop in kernel
- mode with interrupts disabled for more than 60 seconds.
+ mode with interrupts disabled for more than 10 seconds (configurable
+ using the watchdog_thresh sysctl).
Say N if unsure.
help
Say Y here to enable the kernel to panic on "soft lockups",
which are bugs that cause the kernel to loop in kernel
- mode for more than 60 seconds, without giving other tasks a
- chance to run.
+ mode for more than 20 seconds (configurable using the watchdog_thresh
+ sysctl), without giving other tasks a chance to run.
The panic can be used in combination with panic_timeout,
to cause the system to reboot automatically after a
Say Y if you want to enable such checks.
+config RCU_CPU_STALL_INFO
+ bool "Print additional diagnostics on RCU CPU stall"
+ depends on (TREE_RCU || TREE_PREEMPT_RCU) && DEBUG_KERNEL
+ default n
+ help
+ For each stalled CPU that is aware of the current RCU grace
+ period, print out additional per-CPU diagnostic information
+ regarding scheduling-clock ticks, idle state, and,
+ for RCU_FAST_NO_HZ kernels, idle-entry state.
+
+ Say N if you are unsure.
+
+ Say Y if you want to enable such diagnostics.
+
+config RCU_TRACE
+ bool "Enable tracing for RCU"
+ depends on DEBUG_KERNEL
+ help
+ This option provides tracing in RCU which presents stats
+ in debugfs for debugging RCU implementation.
+
+ Say Y here if you want to enable RCU tracing
+ Say N if you are unsure.
+
config KPROBES_SANITY_TEST
bool "Kprobes sanity tests"
depends on DEBUG_KERNEL
# Define V to have a more verbose compile.
#
+ # Define O to save output files in a separate directory.
+ #
+ # Define ARCH as name of target architecture if you want cross-builds.
+ #
+ # Define CROSS_COMPILE as prefix name of compiler if you want cross-builds.
+ #
+ # Define NO_LIBPERL to disable perl script extension.
+ #
+ # Define NO_LIBPYTHON to disable python script extension.
+ #
# Define PYTHON to point to the python binary if the default
# `python' is not correct; for example: PYTHON=python2
#
# Define NO_DWARF if you do not want debug-info analysis feature at all.
#
# Define WERROR=0 to disable treating any warnings as errors.
+ #
+ # Define NO_NEWT if you do not want TUI support.
+ #
+ # Define NO_DEMANGLE if you do not want C++ symbol demangling.
$(OUTPUT)PERF-VERSION-FILE: .FORCE-PERF-VERSION-FILE
@$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT)
ifeq (${IS_X86_64}, 1)
RAW_ARCH := x86_64
ARCH_CFLAGS := -DARCH_X86_64
- ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S
+ ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
endif
endif
grep-libs = $(filter -l%,$(1))
strip-libs = $(filter-out -l%,$(1))
- $(OUTPUT)python/perf.so: $(PYRF_OBJS)
+ PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources)
+ PYTHON_EXT_DEPS := util/python-ext-sources util/setup.py
+
+ $(OUTPUT)python/perf.so: $(PYRF_OBJS) $(PYTHON_EXT_SRCS) $(PYTHON_EXT_DEPS)
$(QUIET_GEN)CFLAGS='$(BASIC_CFLAGS)' $(PYTHON_WORD) util/setup.py \
--quiet build_ext; \
mkdir -p $(OUTPUT)python && \
LIB_H += util/include/dwarf-regs.h
LIB_H += util/include/asm/dwarf2.h
LIB_H += util/include/asm/cpufeature.h
+LIB_H += util/include/asm/unistd_32.h
+LIB_H += util/include/asm/unistd_64.h
LIB_H += perf.h
LIB_H += util/annotate.h
LIB_H += util/cache.h
LIB_H += util/build-id.h
LIB_H += util/debug.h
LIB_H += util/debugfs.h
+ LIB_H += util/sysfs.h
LIB_H += util/event.h
LIB_H += util/evsel.h
LIB_H += util/evlist.h
LIB_OBJS += $(OUTPUT)util/config.o
LIB_OBJS += $(OUTPUT)util/ctype.o
LIB_OBJS += $(OUTPUT)util/debugfs.o
+ LIB_OBJS += $(OUTPUT)util/sysfs.o
LIB_OBJS += $(OUTPUT)util/environment.o
LIB_OBJS += $(OUTPUT)util/event.o
LIB_OBJS += $(OUTPUT)util/evlist.o
BUILTIN_OBJS += $(OUTPUT)bench/sched-pipe.o
ifeq ($(RAW_ARCH),x86_64)
BUILTIN_OBJS += $(OUTPUT)bench/mem-memcpy-x86-64-asm.o
+ BUILTIN_OBJS += $(OUTPUT)bench/mem-memset-x86-64-asm.o
endif
BUILTIN_OBJS += $(OUTPUT)bench/mem-memcpy.o
+ BUILTIN_OBJS += $(OUTPUT)bench/mem-memset.o
BUILTIN_OBJS += $(OUTPUT)builtin-diff.o
BUILTIN_OBJS += $(OUTPUT)builtin-evlist.o
@echo ' quick-install-html - install the html documentation quickly'
@echo ''
@echo 'Perf maintainer targets:'
- @echo ' distclean - alias to clean'
@echo ' clean - clean all binary objects and build output'
doc:
#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#define CPUINFO_PROC "model name"
+#ifndef __NR_perf_event_open
+# define __NR_perf_event_open 336
+#endif
#endif
#if defined(__x86_64__)
#define rmb() asm volatile("lfence" ::: "memory")
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
#define CPUINFO_PROC "model name"
+#ifndef __NR_perf_event_open
+# define __NR_perf_event_open 298
+#endif
#endif
#ifdef __powerpc__
pid_t pid, int cpu, int group_fd,
unsigned long flags)
{
- attr->size = sizeof(*attr);
return syscall(__NR_perf_event_open, attr, pid, cpu,
group_fd, flags);
}
u64 ips[0];
};
+ struct branch_flags {
+ u64 mispred:1;
+ u64 predicted:1;
+ u64 reserved:62;
+ };
+
+ struct branch_entry {
+ u64 from;
+ u64 to;
+ struct branch_flags flags;
+ };
+
+ struct branch_stack {
+ u64 nr;
+ struct branch_entry entries[0];
+ };
+
extern bool perf_host, perf_guest;
extern const char perf_version_string[];
void pthread__unblock_sigwinch(void);
struct perf_record_opts {
- pid_t target_pid;
- pid_t target_tid;
+ const char *target_pid;
+ const char *target_tid;
+ uid_t uid;
bool call_graph;
bool group;
bool inherit_stat;
bool raw_samples;
bool sample_address;
bool sample_time;
- bool sample_id_all_avail;
+ bool sample_id_all_missing;
bool exclude_guest_missing;
bool system_wide;
bool period;
unsigned int freq;
unsigned int mmap_pages;
unsigned int user_freq;
+ int branch_stack;
u64 default_interval;
u64 user_interval;
const char *cpu_list;
return NULL;
}
- static const char *__perf_magic = "PERFFILE";
+ /*
+ * magic2 = "PERFILE2"
+ * must be a numerical value to let the endianness
+ * determine the memory layout. That way we are able
+ * to detect endianness when reading the perf.data file
+ * back.
+ *
+ * we check for legacy (PERFFILE) format.
+ */
+ static const char *__perf_magic1 = "PERFFILE";
+ static const u64 __perf_magic2 = 0x32454c4946524550ULL;
+ static const u64 __perf_magic2_sw = 0x50455246494c4532ULL;
- #define PERF_MAGIC (*(u64 *)__perf_magic)
+ #define PERF_MAGIC __perf_magic2
struct perf_file_attr {
struct perf_event_attr attr;
if (realname == NULL || filename == NULL || linkname == NULL)
goto out_free;
- len = snprintf(filename, size, "%s%s%s",
+ len = scnprintf(filename, size, "%s%s%s",
debugdir, is_kallsyms ? "/" : "", realname);
if (mkdir_p(filename, 0755))
goto out_free;
goto out_free;
}
- len = snprintf(linkname, size, "%s/.build-id/%.2s",
+ len = scnprintf(linkname, size, "%s/.build-id/%.2s",
debugdir, sbuild_id);
if (access(linkname, X_OK) && mkdir_p(linkname, 0755))
return do_write_string(fd, buffer);
}
+ static int write_branch_stack(int fd __used, struct perf_header *h __used,
+ struct perf_evlist *evlist __used)
+ {
+ return 0;
+ }
+
static void print_hostname(struct perf_header *ph, int fd, FILE *fp)
{
char *str = do_read_string(fd, ph);
uint64_t id;
void *buf = NULL;
char *str;
- u32 nre, sz, nr, i, j, msz;
- int ret;
+ u32 nre, sz, nr, i, j;
+ ssize_t ret;
+ size_t msz;
/* number of events */
ret = read(fd, &nre, sizeof(nre));
if (ph->needs_swap)
sz = bswap_32(sz);
- /*
- * ensure it is at least to our ABI rev
- */
- if (sz < (u32)sizeof(attr))
- goto error;
-
memset(&attr, 0, sizeof(attr));
- /* read entire region to sync up to next field */
+ /* buffer to hold on file attr struct */
buf = malloc(sz);
if (!buf)
goto error;
msz = sizeof(attr);
- if (sz < msz)
+ if (sz < (ssize_t)msz)
msz = sz;
for (i = 0 ; i < nre; i++) {
+ /*
+ * must read entire on-file attr struct to
+ * sync up with layout.
+ */
ret = read(fd, buf, sz);
if (ret != (ssize_t)sz)
goto error;
free(str);
}
+ static void print_branch_stack(struct perf_header *ph __used, int fd __used,
+ FILE *fp)
+ {
+ fprintf(fp, "# contains samples with branch stack\n");
+ }
+
+ static int __event_process_build_id(struct build_id_event *bev,
+ char *filename,
+ struct perf_session *session)
+ {
+ int err = -1;
+ struct list_head *head;
+ struct machine *machine;
+ u16 misc;
+ struct dso *dso;
+ enum dso_kernel_type dso_type;
+
+ machine = perf_session__findnew_machine(session, bev->pid);
+ if (!machine)
+ goto out;
+
+ misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+
+ switch (misc) {
+ case PERF_RECORD_MISC_KERNEL:
+ dso_type = DSO_TYPE_KERNEL;
+ head = &machine->kernel_dsos;
+ break;
+ case PERF_RECORD_MISC_GUEST_KERNEL:
+ dso_type = DSO_TYPE_GUEST_KERNEL;
+ head = &machine->kernel_dsos;
+ break;
+ case PERF_RECORD_MISC_USER:
+ case PERF_RECORD_MISC_GUEST_USER:
+ dso_type = DSO_TYPE_USER;
+ head = &machine->user_dsos;
+ break;
+ default:
+ goto out;
+ }
+
+ dso = __dsos__findnew(head, filename);
+ if (dso != NULL) {
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+ dso__set_build_id(dso, &bev->build_id);
+
+ if (filename[0] == '[')
+ dso->kernel = dso_type;
+
+ build_id__sprintf(dso->build_id, sizeof(dso->build_id),
+ sbuild_id);
+ pr_debug("build id event received for %s: %s\n",
+ dso->long_name, sbuild_id);
+ }
+
+ err = 0;
+ out:
+ return err;
+ }
+
+ static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
+ int input, u64 offset, u64 size)
+ {
+ struct perf_session *session = container_of(header, struct perf_session, header);
+ struct {
+ struct perf_event_header header;
+ u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
+ char filename[0];
+ } old_bev;
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ u64 limit = offset + size;
+
+ while (offset < limit) {
+ ssize_t len;
+
+ if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
+ return -1;
+
+ if (header->needs_swap)
+ perf_event_header__bswap(&old_bev.header);
+
+ len = old_bev.header.size - sizeof(old_bev);
+ if (read(input, filename, len) != len)
+ return -1;
+
+ bev.header = old_bev.header;
+
+ /*
+ * As the pid is the missing value, we need to fill
+ * it properly. The header.misc value give us nice hint.
+ */
+ bev.pid = HOST_KERNEL_ID;
+ if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER ||
+ bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL)
+ bev.pid = DEFAULT_GUEST_KERNEL_ID;
+
+ memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
+ __event_process_build_id(&bev, filename, session);
+
+ offset += bev.header.size;
+ }
+
+ return 0;
+ }
+
+ static int perf_header__read_build_ids(struct perf_header *header,
+ int input, u64 offset, u64 size)
+ {
+ struct perf_session *session = container_of(header, struct perf_session, header);
+ struct build_id_event bev;
+ char filename[PATH_MAX];
+ u64 limit = offset + size, orig_offset = offset;
+ int err = -1;
+
+ while (offset < limit) {
+ ssize_t len;
+
+ if (read(input, &bev, sizeof(bev)) != sizeof(bev))
+ goto out;
+
+ if (header->needs_swap)
+ perf_event_header__bswap(&bev.header);
+
+ len = bev.header.size - sizeof(bev);
+ if (read(input, filename, len) != len)
+ goto out;
+ /*
+ * The a1645ce1 changeset:
+ *
+ * "perf: 'perf kvm' tool for monitoring guest performance from host"
+ *
+ * Added a field to struct build_id_event that broke the file
+ * format.
+ *
+ * Since the kernel build-id is the first entry, process the
+ * table using the old format if the well known
+ * '[kernel.kallsyms]' string for the kernel build-id has the
+ * first 4 characters chopped off (where the pid_t sits).
+ */
+ if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
+ if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
+ return -1;
+ return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
+ }
+
+ __event_process_build_id(&bev, filename, session);
+
+ offset += bev.header.size;
+ }
+ err = 0;
+ out:
+ return err;
+ }
+
+ static int process_trace_info(struct perf_file_section *section __unused,
+ struct perf_header *ph __unused,
+ int feat __unused, int fd)
+ {
+ trace_report(fd, false);
+ return 0;
+ }
+
+ static int process_build_id(struct perf_file_section *section,
+ struct perf_header *ph,
+ int feat __unused, int fd)
+ {
+ if (perf_header__read_build_ids(ph, fd, section->offset, section->size))
+ pr_debug("Failed to read buildids, continuing...\n");
+ return 0;
+ }
+
struct feature_ops {
int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
void (*print)(struct perf_header *h, int fd, FILE *fp);
+ int (*process)(struct perf_file_section *section,
+ struct perf_header *h, int feat, int fd);
const char *name;
bool full_only;
};
#define FEAT_OPA(n, func) \
[n] = { .name = #n, .write = write_##func, .print = print_##func }
+ #define FEAT_OPP(n, func) \
+ [n] = { .name = #n, .write = write_##func, .print = print_##func, \
+ .process = process_##func }
#define FEAT_OPF(n, func) \
- [n] = { .name = #n, .write = write_##func, .print = print_##func, .full_only = true }
+ [n] = { .name = #n, .write = write_##func, .print = print_##func, \
+ .full_only = true }
/* feature_ops not implemented: */
#define print_trace_info NULL
#define print_build_id NULL
static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
- FEAT_OPA(HEADER_TRACE_INFO, trace_info),
- FEAT_OPA(HEADER_BUILD_ID, build_id),
+ FEAT_OPP(HEADER_TRACE_INFO, trace_info),
+ FEAT_OPP(HEADER_BUILD_ID, build_id),
FEAT_OPA(HEADER_HOSTNAME, hostname),
FEAT_OPA(HEADER_OSRELEASE, osrelease),
FEAT_OPA(HEADER_VERSION, version),
FEAT_OPA(HEADER_CMDLINE, cmdline),
FEAT_OPF(HEADER_CPU_TOPOLOGY, cpu_topology),
FEAT_OPF(HEADER_NUMA_TOPOLOGY, numa_topology),
+ FEAT_OPA(HEADER_BRANCH_STACK, branch_stack),
};
struct header_print_data {
return err;
}
+ static const int attr_file_abi_sizes[] = {
+ [0] = PERF_ATTR_SIZE_VER0,
+ [1] = PERF_ATTR_SIZE_VER1,
+ 0,
+ };
+
+ /*
+ * In the legacy file format, the magic number is not used to encode endianness.
+ * hdr_sz was used to encode endianness. But given that hdr_sz can vary based
+ * on ABI revisions, we need to try all combinations for all endianness to
+ * detect the endianness.
+ */
+ static int try_all_file_abis(uint64_t hdr_sz, struct perf_header *ph)
+ {
+ uint64_t ref_size, attr_size;
+ int i;
+
+ for (i = 0 ; attr_file_abi_sizes[i]; i++) {
+ ref_size = attr_file_abi_sizes[i]
+ + sizeof(struct perf_file_section);
+ if (hdr_sz != ref_size) {
+ attr_size = bswap_64(hdr_sz);
+ if (attr_size != ref_size)
+ continue;
+
+ ph->needs_swap = true;
+ }
+ pr_debug("ABI%d perf.data file detected, need_swap=%d\n",
+ i,
+ ph->needs_swap);
+ return 0;
+ }
+ /* could not determine endianness */
+ return -1;
+ }
+
+ #define PERF_PIPE_HDR_VER0 16
+
+ static const size_t attr_pipe_abi_sizes[] = {
+ [0] = PERF_PIPE_HDR_VER0,
+ 0,
+ };
+
+ /*
+ * In the legacy pipe format, there is an implicit assumption that endiannesss
+ * between host recording the samples, and host parsing the samples is the
+ * same. This is not always the case given that the pipe output may always be
+ * redirected into a file and analyzed on a different machine with possibly a
+ * different endianness and perf_event ABI revsions in the perf tool itself.
+ */
+ static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph)
+ {
+ u64 attr_size;
+ int i;
+
+ for (i = 0 ; attr_pipe_abi_sizes[i]; i++) {
+ if (hdr_sz != attr_pipe_abi_sizes[i]) {
+ attr_size = bswap_64(hdr_sz);
+ if (attr_size != hdr_sz)
+ continue;
+
+ ph->needs_swap = true;
+ }
+ pr_debug("Pipe ABI%d perf.data file detected\n", i);
+ return 0;
+ }
+ return -1;
+ }
+
+ static int check_magic_endian(u64 magic, uint64_t hdr_sz,
+ bool is_pipe, struct perf_header *ph)
+ {
+ int ret;
+
+ /* check for legacy format */
+ ret = memcmp(&magic, __perf_magic1, sizeof(magic));
+ if (ret == 0) {
+ pr_debug("legacy perf.data format\n");
+ if (is_pipe)
+ return try_all_pipe_abis(hdr_sz, ph);
+
+ return try_all_file_abis(hdr_sz, ph);
+ }
+ /*
+ * the new magic number serves two purposes:
+ * - unique number to identify actual perf.data files
+ * - encode endianness of file
+ */
+
+ /* check magic number with one endianness */
+ if (magic == __perf_magic2)
+ return 0;
+
+ /* check magic number with opposite endianness */
+ if (magic != __perf_magic2_sw)
+ return -1;
+
+ ph->needs_swap = true;
+
+ return 0;
+ }
+
int perf_file_header__read(struct perf_file_header *header,
struct perf_header *ph, int fd)
{
+ int ret;
+
lseek(fd, 0, SEEK_SET);
- if (readn(fd, header, sizeof(*header)) <= 0 ||
- memcmp(&header->magic, __perf_magic, sizeof(header->magic)))
+ ret = readn(fd, header, sizeof(*header));
+ if (ret <= 0)
return -1;
- if (header->attr_size != sizeof(struct perf_file_attr)) {
- u64 attr_size = bswap_64(header->attr_size);
-
- if (attr_size != sizeof(struct perf_file_attr))
- return -1;
+ if (check_magic_endian(header->magic,
+ header->attr_size, false, ph) < 0) {
+ pr_debug("magic/endian check failed\n");
+ return -1;
+ }
+ if (ph->needs_swap) {
mem_bswap_64(header, offsetof(struct perf_file_header,
- adds_features));
- ph->needs_swap = true;
+ adds_features));
}
if (header->size != sizeof(*header)) {
return 0;
}
- static int __event_process_build_id(struct build_id_event *bev,
- char *filename,
- struct perf_session *session)
- {
- int err = -1;
- struct list_head *head;
- struct machine *machine;
- u16 misc;
- struct dso *dso;
- enum dso_kernel_type dso_type;
-
- machine = perf_session__findnew_machine(session, bev->pid);
- if (!machine)
- goto out;
-
- misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-
- switch (misc) {
- case PERF_RECORD_MISC_KERNEL:
- dso_type = DSO_TYPE_KERNEL;
- head = &machine->kernel_dsos;
- break;
- case PERF_RECORD_MISC_GUEST_KERNEL:
- dso_type = DSO_TYPE_GUEST_KERNEL;
- head = &machine->kernel_dsos;
- break;
- case PERF_RECORD_MISC_USER:
- case PERF_RECORD_MISC_GUEST_USER:
- dso_type = DSO_TYPE_USER;
- head = &machine->user_dsos;
- break;
- default:
- goto out;
- }
-
- dso = __dsos__findnew(head, filename);
- if (dso != NULL) {
- char sbuild_id[BUILD_ID_SIZE * 2 + 1];
-
- dso__set_build_id(dso, &bev->build_id);
-
- if (filename[0] == '[')
- dso->kernel = dso_type;
-
- build_id__sprintf(dso->build_id, sizeof(dso->build_id),
- sbuild_id);
- pr_debug("build id event received for %s: %s\n",
- dso->long_name, sbuild_id);
- }
-
- err = 0;
- out:
- return err;
- }
-
- static int perf_header__read_build_ids_abi_quirk(struct perf_header *header,
- int input, u64 offset, u64 size)
- {
- struct perf_session *session = container_of(header, struct perf_session, header);
- struct {
- struct perf_event_header header;
- u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))];
- char filename[0];
- } old_bev;
- struct build_id_event bev;
- char filename[PATH_MAX];
- u64 limit = offset + size;
-
- while (offset < limit) {
- ssize_t len;
-
- if (read(input, &old_bev, sizeof(old_bev)) != sizeof(old_bev))
- return -1;
-
- if (header->needs_swap)
- perf_event_header__bswap(&old_bev.header);
-
- len = old_bev.header.size - sizeof(old_bev);
- if (read(input, filename, len) != len)
- return -1;
-
- bev.header = old_bev.header;
-
- /*
- * As the pid is the missing value, we need to fill
- * it properly. The header.misc value give us nice hint.
- */
- bev.pid = HOST_KERNEL_ID;
- if (bev.header.misc == PERF_RECORD_MISC_GUEST_USER ||
- bev.header.misc == PERF_RECORD_MISC_GUEST_KERNEL)
- bev.pid = DEFAULT_GUEST_KERNEL_ID;
-
- memcpy(bev.build_id, old_bev.build_id, sizeof(bev.build_id));
- __event_process_build_id(&bev, filename, session);
-
- offset += bev.header.size;
- }
-
- return 0;
- }
-
- static int perf_header__read_build_ids(struct perf_header *header,
- int input, u64 offset, u64 size)
- {
- struct perf_session *session = container_of(header, struct perf_session, header);
- struct build_id_event bev;
- char filename[PATH_MAX];
- u64 limit = offset + size, orig_offset = offset;
- int err = -1;
-
- while (offset < limit) {
- ssize_t len;
-
- if (read(input, &bev, sizeof(bev)) != sizeof(bev))
- goto out;
-
- if (header->needs_swap)
- perf_event_header__bswap(&bev.header);
-
- len = bev.header.size - sizeof(bev);
- if (read(input, filename, len) != len)
- goto out;
- /*
- * The a1645ce1 changeset:
- *
- * "perf: 'perf kvm' tool for monitoring guest performance from host"
- *
- * Added a field to struct build_id_event that broke the file
- * format.
- *
- * Since the kernel build-id is the first entry, process the
- * table using the old format if the well known
- * '[kernel.kallsyms]' string for the kernel build-id has the
- * first 4 characters chopped off (where the pid_t sits).
- */
- if (memcmp(filename, "nel.kallsyms]", 13) == 0) {
- if (lseek(input, orig_offset, SEEK_SET) == (off_t)-1)
- return -1;
- return perf_header__read_build_ids_abi_quirk(header, input, offset, size);
- }
-
- __event_process_build_id(&bev, filename, session);
-
- offset += bev.header.size;
- }
- err = 0;
- out:
- return err;
- }
-
static int perf_file_section__process(struct perf_file_section *section,
struct perf_header *ph,
int feat, int fd, void *data __used)
return 0;
}
- switch (feat) {
- case HEADER_TRACE_INFO:
- trace_report(fd, false);
- break;
- case HEADER_BUILD_ID:
- if (perf_header__read_build_ids(ph, fd, section->offset, section->size))
- pr_debug("Failed to read buildids, continuing...\n");
- break;
- default:
- break;
- }
+ if (!feat_ops[feat].process)
+ return 0;
- return 0;
+ return feat_ops[feat].process(section, ph, feat, fd);
}
static int perf_file_header__read_pipe(struct perf_pipe_file_header *header,
struct perf_header *ph, int fd,
bool repipe)
{
- if (readn(fd, header, sizeof(*header)) <= 0 ||
- memcmp(&header->magic, __perf_magic, sizeof(header->magic)))
- return -1;
+ int ret;
- if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0)
+ ret = readn(fd, header, sizeof(*header));
+ if (ret <= 0)
return -1;
- if (header->size != sizeof(*header)) {
- u64 size = bswap_64(header->size);
+ if (check_magic_endian(header->magic, header->size, true, ph) < 0) {
+ pr_debug("endian/magic failed\n");
+ return -1;
+ }
- if (size != sizeof(*header))
- return -1;
+ if (ph->needs_swap)
+ header->size = bswap_64(header->size);
- ph->needs_swap = true;
- }
+ if (repipe && do_write(STDOUT_FILENO, header, sizeof(*header)) < 0)
+ return -1;
return 0;
}
return 0;
}
+ static int read_attr(int fd, struct perf_header *ph,
+ struct perf_file_attr *f_attr)
+ {
+ struct perf_event_attr *attr = &f_attr->attr;
+ size_t sz, left;
+ size_t our_sz = sizeof(f_attr->attr);
+ int ret;
+
+ memset(f_attr, 0, sizeof(*f_attr));
+
+ /* read minimal guaranteed structure */
+ ret = readn(fd, attr, PERF_ATTR_SIZE_VER0);
+ if (ret <= 0) {
+ pr_debug("cannot read %d bytes of header attr\n",
+ PERF_ATTR_SIZE_VER0);
+ return -1;
+ }
+
+ /* on file perf_event_attr size */
+ sz = attr->size;
+
+ if (ph->needs_swap)
+ sz = bswap_32(sz);
+
+ if (sz == 0) {
+ /* assume ABI0 */
+ sz = PERF_ATTR_SIZE_VER0;
+ } else if (sz > our_sz) {
+ pr_debug("file uses a more recent and unsupported ABI"
+ " (%zu bytes extra)\n", sz - our_sz);
+ return -1;
+ }
+ /* what we have not yet read and that we know about */
+ left = sz - PERF_ATTR_SIZE_VER0;
+ if (left) {
+ void *ptr = attr;
+ ptr += PERF_ATTR_SIZE_VER0;
+
+ ret = readn(fd, ptr, left);
+ }
+ /* read perf_file_section, ids are read in caller */
+ ret = readn(fd, &f_attr->ids, sizeof(f_attr->ids));
+
+ return ret <= 0 ? -1 : 0;
+ }
+
int perf_session__read_header(struct perf_session *session, int fd)
{
struct perf_header *header = &session->header;
if (session->fd_pipe)
return perf_header__read_pipe(session, fd);
- if (perf_file_header__read(&f_header, header, fd) < 0) {
- pr_debug("incompatible file format\n");
+ if (perf_file_header__read(&f_header, header, fd) < 0)
return -EINVAL;
- }
- nr_attrs = f_header.attrs.size / sizeof(f_attr);
+ nr_attrs = f_header.attrs.size / f_header.attr_size;
lseek(fd, f_header.attrs.offset, SEEK_SET);
for (i = 0; i < nr_attrs; i++) {
struct perf_evsel *evsel;
off_t tmp;
- if (readn(fd, &f_attr, sizeof(f_attr)) <= 0)
+ if (read_attr(fd, header, &f_attr) < 0)
goto out_errno;
if (header->needs_swap)
hists__set_col_len(hists, col, 0);
}
+ static void hists__set_unres_dso_col_len(struct hists *hists, int dso)
+ {
+ const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
+
+ if (hists__col_len(hists, dso) < unresolved_col_width &&
+ !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
+ !symbol_conf.dso_list)
+ hists__set_col_len(hists, dso, unresolved_col_width);
+ }
+
static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
{
+ const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
u16 len;
if (h->ms.sym)
- hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen);
- else {
- const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
-
- if (hists__col_len(hists, HISTC_DSO) < unresolved_col_width &&
- !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
- !symbol_conf.dso_list)
- hists__set_col_len(hists, HISTC_DSO,
- unresolved_col_width);
- }
+ hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen + 4);
+ else
+ hists__set_unres_dso_col_len(hists, HISTC_DSO);
len = thread__comm_len(h->thread);
if (hists__new_col_len(hists, HISTC_COMM, len))
len = dso__name_len(h->ms.map->dso);
hists__new_col_len(hists, HISTC_DSO, len);
}
+
+ if (h->branch_info) {
+ int symlen;
+ /*
+ * +4 accounts for '[x] ' priv level info
+ * +2 account of 0x prefix on raw addresses
+ */
+ if (h->branch_info->from.sym) {
+ symlen = (int)h->branch_info->from.sym->namelen + 4;
+ hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
+
+ symlen = dso__name_len(h->branch_info->from.map->dso);
+ hists__new_col_len(hists, HISTC_DSO_FROM, symlen);
+ } else {
+ symlen = unresolved_col_width + 4 + 2;
+ hists__new_col_len(hists, HISTC_SYMBOL_FROM, symlen);
+ hists__set_unres_dso_col_len(hists, HISTC_DSO_FROM);
+ }
+
+ if (h->branch_info->to.sym) {
+ symlen = (int)h->branch_info->to.sym->namelen + 4;
+ hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
+
+ symlen = dso__name_len(h->branch_info->to.map->dso);
+ hists__new_col_len(hists, HISTC_DSO_TO, symlen);
+ } else {
+ symlen = unresolved_col_width + 4 + 2;
+ hists__new_col_len(hists, HISTC_SYMBOL_TO, symlen);
+ hists__set_unres_dso_col_len(hists, HISTC_DSO_TO);
+ }
+ }
}
static void hist_entry__add_cpumode_period(struct hist_entry *he,
return 0;
}
- struct hist_entry *__hists__add_entry(struct hists *hists,
+ static struct hist_entry *add_hist_entry(struct hists *hists,
+ struct hist_entry *entry,
struct addr_location *al,
- struct symbol *sym_parent, u64 period)
+ u64 period)
{
struct rb_node **p;
struct rb_node *parent = NULL;
struct hist_entry *he;
- struct hist_entry entry = {
- .thread = al->thread,
- .ms = {
- .map = al->map,
- .sym = al->sym,
- },
- .cpu = al->cpu,
- .ip = al->addr,
- .level = al->level,
- .period = period,
- .parent = sym_parent,
- .filtered = symbol__parent_filter(sym_parent),
- };
int cmp;
pthread_mutex_lock(&hists->lock);
parent = *p;
he = rb_entry(parent, struct hist_entry, rb_node_in);
- cmp = hist_entry__cmp(&entry, he);
+ cmp = hist_entry__cmp(entry, he);
if (!cmp) {
he->period += period;
p = &(*p)->rb_right;
}
- he = hist_entry__new(&entry);
+ he = hist_entry__new(entry);
if (!he)
goto out_unlock;
return he;
}
+ struct hist_entry *__hists__add_branch_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent,
+ struct branch_info *bi,
+ u64 period)
+ {
+ struct hist_entry entry = {
+ .thread = al->thread,
+ .ms = {
+ .map = bi->to.map,
+ .sym = bi->to.sym,
+ },
+ .cpu = al->cpu,
+ .ip = bi->to.addr,
+ .level = al->level,
+ .period = period,
+ .parent = sym_parent,
+ .filtered = symbol__parent_filter(sym_parent),
+ .branch_info = bi,
+ };
+
+ return add_hist_entry(self, &entry, al, period);
+ }
+
+ struct hist_entry *__hists__add_entry(struct hists *self,
+ struct addr_location *al,
+ struct symbol *sym_parent, u64 period)
+ {
+ struct hist_entry entry = {
+ .thread = al->thread,
+ .ms = {
+ .map = al->map,
+ .sym = al->sym,
+ },
+ .cpu = al->cpu,
+ .ip = al->addr,
+ .level = al->level,
+ .period = period,
+ .parent = sym_parent,
+ .filtered = symbol__parent_filter(sym_parent),
+ };
+
+ return add_hist_entry(self, &entry, al, period);
+ }
+
int64_t
hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
{
sep ? "%.2f" : " %6.2f%%",
(period * 100.0) / total);
else
- ret = snprintf(s, size, sep ? "%.2f" : " %6.2f%%",
+ ret = scnprintf(s, size, sep ? "%.2f" : " %6.2f%%",
(period * 100.0) / total);
if (symbol_conf.show_cpu_utilization) {
ret += percent_color_snprintf(s + ret, size - ret,
}
}
} else
- ret = snprintf(s, size, sep ? "%" PRIu64 : "%12" PRIu64 " ", period);
+ ret = scnprintf(s, size, sep ? "%" PRIu64 : "%12" PRIu64 " ", period);
if (symbol_conf.show_nr_samples) {
if (sep)
- ret += snprintf(s + ret, size - ret, "%c%" PRIu64, *sep, nr_events);
+ ret += scnprintf(s + ret, size - ret, "%c%" PRIu64, *sep, nr_events);
else
- ret += snprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
+ ret += scnprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
}
if (symbol_conf.show_total_period) {
if (sep)
- ret += snprintf(s + ret, size - ret, "%c%" PRIu64, *sep, period);
+ ret += scnprintf(s + ret, size - ret, "%c%" PRIu64, *sep, period);
else
- ret += snprintf(s + ret, size - ret, " %12" PRIu64, period);
+ ret += scnprintf(s + ret, size - ret, " %12" PRIu64, period);
}
if (pair_hists) {
diff = new_percent - old_percent;
if (fabs(diff) >= 0.01)
- snprintf(bf, sizeof(bf), "%+4.2F%%", diff);
+ ret += scnprintf(bf, sizeof(bf), "%+4.2F%%", diff);
else
- snprintf(bf, sizeof(bf), " ");
+ ret += scnprintf(bf, sizeof(bf), " ");
if (sep)
- ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
+ ret += scnprintf(s + ret, size - ret, "%c%s", *sep, bf);
else
- ret += snprintf(s + ret, size - ret, "%11.11s", bf);
+ ret += scnprintf(s + ret, size - ret, "%11.11s", bf);
if (show_displacement) {
if (displacement)
- snprintf(bf, sizeof(bf), "%+4ld", displacement);
+ ret += scnprintf(bf, sizeof(bf), "%+4ld", displacement);
else
- snprintf(bf, sizeof(bf), " ");
+ ret += scnprintf(bf, sizeof(bf), " ");
if (sep)
- ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf);
+ ret += scnprintf(s + ret, size - ret, "%c%s", *sep, bf);
else
- ret += snprintf(s + ret, size - ret, "%6.6s", bf);
+ ret += scnprintf(s + ret, size - ret, "%6.6s", bf);
}
}
if (se->elide)
continue;
- ret += snprintf(s + ret, size - ret, "%s", sep ?: " ");
+ ret += scnprintf(s + ret, size - ret, "%s", sep ?: " ");
ret += se->se_snprintf(he, s + ret, size - ret,
hists__col_len(hists, se->se_width_idx));
}
const char *sort_order = default_sort_order;
int sort__need_collapse = 0;
int sort__has_parent = 0;
+ int sort__branch_mode = -1; /* -1 = means not set */
enum sort_type sort__first_dimension;
}
}
va_end(ap);
+
+ if (n >= (int)size)
+ return size - 1;
return n;
}
return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
}
+ static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
+ {
+ struct dso *dso_l = map_l ? map_l->dso : NULL;
+ struct dso *dso_r = map_r ? map_r->dso : NULL;
+ const char *dso_name_l, *dso_name_r;
+
+ if (!dso_l || !dso_r)
+ return cmp_null(dso_l, dso_r);
+
+ if (verbose) {
+ dso_name_l = dso_l->long_name;
+ dso_name_r = dso_r->long_name;
+ } else {
+ dso_name_l = dso_l->short_name;
+ dso_name_r = dso_r->short_name;
+ }
+
+ return strcmp(dso_name_l, dso_name_r);
+ }
+
struct sort_entry sort_comm = {
.se_header = "Command",
.se_cmp = sort__comm_cmp,
static int64_t
sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
{
- struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL;
- struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL;
- const char *dso_name_l, *dso_name_r;
+ return _sort__dso_cmp(left->ms.map, right->ms.map);
+ }
- if (!dso_l || !dso_r)
- return cmp_null(dso_l, dso_r);
- if (verbose) {
- dso_name_l = dso_l->long_name;
- dso_name_r = dso_r->long_name;
- } else {
- dso_name_l = dso_l->short_name;
- dso_name_r = dso_r->short_name;
+ static int64_t _sort__sym_cmp(struct symbol *sym_l, struct symbol *sym_r,
+ u64 ip_l, u64 ip_r)
+ {
+ if (!sym_l || !sym_r)
+ return cmp_null(sym_l, sym_r);
+
+ if (sym_l == sym_r)
+ return 0;
+
+ if (sym_l)
+ ip_l = sym_l->start;
+ if (sym_r)
+ ip_r = sym_r->start;
+
+ return (int64_t)(ip_r - ip_l);
+ }
+
+ static int _hist_entry__dso_snprintf(struct map *map, char *bf,
+ size_t size, unsigned int width)
+ {
+ if (map && map->dso) {
+ const char *dso_name = !verbose ? map->dso->short_name :
+ map->dso->long_name;
+ return repsep_snprintf(bf, size, "%-*s", width, dso_name);
}
- return strcmp(dso_name_l, dso_name_r);
+ return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
}
static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
size_t size, unsigned int width)
{
- if (self->ms.map && self->ms.map->dso) {
- const char *dso_name = !verbose ? self->ms.map->dso->short_name :
- self->ms.map->dso->long_name;
- return repsep_snprintf(bf, size, "%-*s", width, dso_name);
+ return _hist_entry__dso_snprintf(self->ms.map, bf, size, width);
+ }
+
+ static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym,
+ u64 ip, char level, char *bf, size_t size,
+ unsigned int width __used)
+ {
+ size_t ret = 0;
+
+ if (verbose) {
+ char o = map ? dso__symtab_origin(map->dso) : '!';
+ ret += repsep_snprintf(bf, size, "%-#*llx %c ",
+ BITS_PER_LONG / 4, ip, o);
}
- return repsep_snprintf(bf, size, "%-*s", width, "[unknown]");
+ ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", level);
+ if (sym)
+ ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
+ width - ret,
+ sym->name);
+ else {
+ size_t len = BITS_PER_LONG / 4;
+ ret += repsep_snprintf(bf + ret, size - ret, "%-#.*llx",
+ len, ip);
+ ret += repsep_snprintf(bf + ret, size - ret, "%-*s",
+ width - ret, "");
+ }
+
+ return ret;
}
+
struct sort_entry sort_dso = {
.se_header = "Shared Object",
.se_cmp = sort__dso_cmp,
.se_width_idx = HISTC_DSO,
};
- /* --sort symbol */
+ static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+ {
+ return _hist_entry__sym_snprintf(self->ms.map, self->ms.sym, self->ip,
+ self->level, bf, size, width);
+ }
+ /* --sort symbol */
static int64_t
sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
{
ip_l = left->ms.sym->start;
ip_r = right->ms.sym->start;
- return (int64_t)(ip_r - ip_l);
- }
-
- static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
- size_t size, unsigned int width __used)
- {
- size_t ret = 0;
-
- if (verbose) {
- char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
- ret += repsep_snprintf(bf, size, "%-#*llx %c ",
- BITS_PER_LONG / 4, self->ip, o);
- }
-
- if (!sort_dso.elide)
- ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level);
-
- if (self->ms.sym)
- ret += repsep_snprintf(bf + ret, size - ret, "%s",
- self->ms.sym->name);
- else
- ret += repsep_snprintf(bf + ret, size - ret, "%-#*llx",
- BITS_PER_LONG / 4, self->ip);
-
- return ret;
+ return _sort__sym_cmp(left->ms.sym, right->ms.sym, ip_l, ip_r);
}
struct sort_entry sort_sym = {
.se_width_idx = HISTC_CPU,
};
+ static int64_t
+ sort__dso_from_cmp(struct hist_entry *left, struct hist_entry *right)
+ {
+ return _sort__dso_cmp(left->branch_info->from.map,
+ right->branch_info->from.map);
+ }
+
+ static int hist_entry__dso_from_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width)
+ {
+ return _hist_entry__dso_snprintf(self->branch_info->from.map,
+ bf, size, width);
+ }
+
+ struct sort_entry sort_dso_from = {
+ .se_header = "Source Shared Object",
+ .se_cmp = sort__dso_from_cmp,
+ .se_snprintf = hist_entry__dso_from_snprintf,
+ .se_width_idx = HISTC_DSO_FROM,
+ };
+
+ static int64_t
+ sort__dso_to_cmp(struct hist_entry *left, struct hist_entry *right)
+ {
+ return _sort__dso_cmp(left->branch_info->to.map,
+ right->branch_info->to.map);
+ }
+
+ static int hist_entry__dso_to_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width)
+ {
+ return _hist_entry__dso_snprintf(self->branch_info->to.map,
+ bf, size, width);
+ }
+
+ static int64_t
+ sort__sym_from_cmp(struct hist_entry *left, struct hist_entry *right)
+ {
+ struct addr_map_symbol *from_l = &left->branch_info->from;
+ struct addr_map_symbol *from_r = &right->branch_info->from;
+
+ if (!from_l->sym && !from_r->sym)
+ return right->level - left->level;
+
+ return _sort__sym_cmp(from_l->sym, from_r->sym, from_l->addr,
+ from_r->addr);
+ }
+
+ static int64_t
+ sort__sym_to_cmp(struct hist_entry *left, struct hist_entry *right)
+ {
+ struct addr_map_symbol *to_l = &left->branch_info->to;
+ struct addr_map_symbol *to_r = &right->branch_info->to;
+
+ if (!to_l->sym && !to_r->sym)
+ return right->level - left->level;
+
+ return _sort__sym_cmp(to_l->sym, to_r->sym, to_l->addr, to_r->addr);
+ }
+
+ static int hist_entry__sym_from_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+ {
+ struct addr_map_symbol *from = &self->branch_info->from;
+ return _hist_entry__sym_snprintf(from->map, from->sym, from->addr,
+ self->level, bf, size, width);
+
+ }
+
+ static int hist_entry__sym_to_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width __used)
+ {
+ struct addr_map_symbol *to = &self->branch_info->to;
+ return _hist_entry__sym_snprintf(to->map, to->sym, to->addr,
+ self->level, bf, size, width);
+
+ }
+
+ struct sort_entry sort_dso_to = {
+ .se_header = "Target Shared Object",
+ .se_cmp = sort__dso_to_cmp,
+ .se_snprintf = hist_entry__dso_to_snprintf,
+ .se_width_idx = HISTC_DSO_TO,
+ };
+
+ struct sort_entry sort_sym_from = {
+ .se_header = "Source Symbol",
+ .se_cmp = sort__sym_from_cmp,
+ .se_snprintf = hist_entry__sym_from_snprintf,
+ .se_width_idx = HISTC_SYMBOL_FROM,
+ };
+
+ struct sort_entry sort_sym_to = {
+ .se_header = "Target Symbol",
+ .se_cmp = sort__sym_to_cmp,
+ .se_snprintf = hist_entry__sym_to_snprintf,
+ .se_width_idx = HISTC_SYMBOL_TO,
+ };
+
+ static int64_t
+ sort__mispredict_cmp(struct hist_entry *left, struct hist_entry *right)
+ {
+ const unsigned char mp = left->branch_info->flags.mispred !=
+ right->branch_info->flags.mispred;
+ const unsigned char p = left->branch_info->flags.predicted !=
+ right->branch_info->flags.predicted;
+
+ return mp || p;
+ }
+
+ static int hist_entry__mispredict_snprintf(struct hist_entry *self, char *bf,
+ size_t size, unsigned int width){
+ static const char *out = "N/A";
+
+ if (self->branch_info->flags.predicted)
+ out = "N";
+ else if (self->branch_info->flags.mispred)
+ out = "Y";
+
+ return repsep_snprintf(bf, size, "%-*s", width, out);
+ }
+
+ struct sort_entry sort_mispredict = {
+ .se_header = "Branch Mispredicted",
+ .se_cmp = sort__mispredict_cmp,
+ .se_snprintf = hist_entry__mispredict_snprintf,
+ .se_width_idx = HISTC_MISPREDICT,
+ };
+
struct sort_dimension {
const char *name;
struct sort_entry *entry;
int taken;
};
+ #define DIM(d, n, func) [d] = { .name = n, .entry = &(func) }
+
static struct sort_dimension sort_dimensions[] = {
- { .name = "pid", .entry = &sort_thread, },
- { .name = "comm", .entry = &sort_comm, },
- { .name = "dso", .entry = &sort_dso, },
- { .name = "symbol", .entry = &sort_sym, },
- { .name = "parent", .entry = &sort_parent, },
- { .name = "cpu", .entry = &sort_cpu, },
+ DIM(SORT_PID, "pid", sort_thread),
+ DIM(SORT_COMM, "comm", sort_comm),
+ DIM(SORT_DSO, "dso", sort_dso),
+ DIM(SORT_DSO_FROM, "dso_from", sort_dso_from),
+ DIM(SORT_DSO_TO, "dso_to", sort_dso_to),
+ DIM(SORT_SYM, "symbol", sort_sym),
+ DIM(SORT_SYM_TO, "symbol_from", sort_sym_from),
+ DIM(SORT_SYM_FROM, "symbol_to", sort_sym_to),
+ DIM(SORT_PARENT, "parent", sort_parent),
+ DIM(SORT_CPU, "cpu", sort_cpu),
+ DIM(SORT_MISPREDICT, "mispredict", sort_mispredict),
};
int sort_dimension__add(const char *tok)
if (strncasecmp(tok, sd->name, strlen(tok)))
continue;
-
if (sd->entry == &sort_parent) {
int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
if (ret) {
sort__first_dimension = SORT_PARENT;
else if (!strcmp(sd->name, "cpu"))
sort__first_dimension = SORT_CPU;
+ else if (!strcmp(sd->name, "symbol_from"))
+ sort__first_dimension = SORT_SYM_FROM;
+ else if (!strcmp(sd->name, "symbol_to"))
+ sort__first_dimension = SORT_SYM_TO;
+ else if (!strcmp(sd->name, "dso_from"))
+ sort__first_dimension = SORT_DSO_FROM;
+ else if (!strcmp(sd->name, "dso_to"))
+ sort__first_dimension = SORT_DSO_TO;
+ else if (!strcmp(sd->name, "mispredict"))
+ sort__first_dimension = SORT_MISPREDICT;
}
list_add_tail(&sd->entry->list, &hist_entry__sort_list);
return 0;
}
-
return -ESRCH;
}
self->hists = hists;
self->b.refresh = hist_browser__refresh;
self->b.seek = ui_browser__hists_seek;
- self->b.use_navkeypressed = true,
- self->has_symbols = sort_sym.list.next != NULL;
+ self->b.use_navkeypressed = true;
+ if (sort__branch_mode == 1)
+ self->has_symbols = sort_sym_from.list.next != NULL;
+ else
+ self->has_symbols = sort_sym.list.next != NULL;
}
return self;
unsigned long nr_events = self->stats.nr_events[PERF_RECORD_SAMPLE];
nr_events = convert_unit(nr_events, &unit);
- printed = snprintf(bf, size, "Events: %lu%c %s", nr_events, unit, ev_name);
+ printed = scnprintf(bf, size, "Events: %lu%c %s", nr_events, unit, ev_name);
+ if (self->uid_filter_str)
+ printed += snprintf(bf + printed, size - printed,
+ ", UID: %s", self->uid_filter_str);
if (thread)
- printed += snprintf(bf + printed, size - printed,
+ printed += scnprintf(bf + printed, size - printed,
", Thread: %s(%d)",
(thread->comm_set ? thread->comm : ""),
thread->pid);
if (dso)
- printed += snprintf(bf + printed, size - printed,
+ printed += scnprintf(bf + printed, size - printed,
", DSO: %s", dso->short_name);
return printed;
}
+ static inline void free_popup_options(char **options, int n)
+ {
+ int i;
+
+ for (i = 0; i < n; ++i) {
+ free(options[i]);
+ options[i] = NULL;
+ }
+ }
+
static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
const char *helpline, const char *ev_name,
bool left_exits,
{
struct hists *self = &evsel->hists;
struct hist_browser *browser = hist_browser__new(self);
+ struct branch_info *bi;
struct pstack *fstack;
+ char *options[16];
+ int nr_options = 0;
int key = -1;
if (browser == NULL)
ui_helpline__push(helpline);
+ memset(options, 0, sizeof(options));
+
while (1) {
const struct thread *thread = NULL;
const struct dso *dso = NULL;
- char *options[16];
- int nr_options = 0, choice = 0, i,
+ int choice = 0,
annotate = -2, zoom_dso = -2, zoom_thread = -2,
- browse_map = -2;
+ annotate_f = -2, annotate_t = -2, browse_map = -2;
+
+ nr_options = 0;
key = hist_browser__run(browser, ev_name, timer, arg, delay_secs);
thread = hist_browser__selected_thread(browser);
dso = browser->selection->map ? browser->selection->map->dso : NULL;
}
-
switch (key) {
case K_TAB:
case K_UNTAB:
if (!browser->has_symbols) {
ui_browser__warning(&browser->b, delay_secs * 2,
"Annotation is only available for symbolic views, "
- "include \"sym\" in --sort to use it.");
+ "include \"sym*\" in --sort to use it.");
continue;
}
if (!browser->has_symbols)
goto add_exit_option;
- if (browser->selection != NULL &&
- browser->selection->sym != NULL &&
- !browser->selection->map->dso->annotate_warned &&
- asprintf(&options[nr_options], "Annotate %s",
- browser->selection->sym->name) > 0)
- annotate = nr_options++;
+ if (sort__branch_mode == 1) {
+ bi = browser->he_selection->branch_info;
+ if (browser->selection != NULL &&
+ bi &&
+ bi->from.sym != NULL &&
+ !bi->from.map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->from.sym->name) > 0)
+ annotate_f = nr_options++;
+
+ if (browser->selection != NULL &&
+ bi &&
+ bi->to.sym != NULL &&
+ !bi->to.map->dso->annotate_warned &&
+ (bi->to.sym != bi->from.sym ||
+ bi->to.map->dso != bi->from.map->dso) &&
+ asprintf(&options[nr_options], "Annotate %s",
+ bi->to.sym->name) > 0)
+ annotate_t = nr_options++;
+ } else {
+
+ if (browser->selection != NULL &&
+ browser->selection->sym != NULL &&
+ !browser->selection->map->dso->annotate_warned &&
+ asprintf(&options[nr_options], "Annotate %s",
+ browser->selection->sym->name) > 0)
+ annotate = nr_options++;
+ }
if (thread != NULL &&
asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
browse_map = nr_options++;
add_exit_option:
options[nr_options++] = (char *)"Exit";
-
+ retry_popup_menu:
choice = ui__popup_menu(nr_options, options);
if (choice == nr_options - 1)
break;
- if (choice == -1)
+ if (choice == -1) {
+ free_popup_options(options, nr_options - 1);
continue;
+ }
- if (choice == annotate) {
+ if (choice == annotate || choice == annotate_t || choice == annotate_f) {
struct hist_entry *he;
int err;
do_annotate:
he = hist_browser__selected_entry(browser);
if (he == NULL)
continue;
+
+ /*
+ * we stash the branch_info symbol + map into the
+ * the ms so we don't have to rewrite all the annotation
+ * code to use branch_info.
+ * in branch mode, the ms struct is not used
+ */
+ if (choice == annotate_f) {
+ he->ms.sym = he->branch_info->from.sym;
+ he->ms.map = he->branch_info->from.map;
+ } else if (choice == annotate_t) {
+ he->ms.sym = he->branch_info->to.sym;
+ he->ms.map = he->branch_info->to.map;
+ }
+
/*
* Don't let this be freed, say, by hists__decay_entry.
*/
err = hist_entry__tui_annotate(he, evsel->idx,
timer, arg, delay_secs);
he->used = false;
+ /*
+ * offer option to annotate the other branch source or target
+ * (if they exists) when returning from annotate
+ */
+ if ((err == 'q' || err == CTRL('c'))
+ && annotate_t != -2 && annotate_f != -2)
+ goto retry_popup_menu;
+
ui_browser__update_nr_entries(&browser->b, browser->hists->nr_entries);
if (err)
ui_browser__handle_resize(&browser->b);
+
} else if (choice == browse_map)
map__browse(browser->selection->map);
else if (choice == zoom_dso) {
pstack__delete(fstack);
out:
hist_browser__delete(browser);
+ free_popup_options(options, nr_options - 1);
return key;
}
HE_COLORSET_NORMAL);
nr_events = convert_unit(nr_events, &unit);
- printed = snprintf(bf, sizeof(bf), "%lu%c%s%s", nr_events,
+ printed = scnprintf(bf, sizeof(bf), "%lu%c%s%s", nr_events,
unit, unit == ' ' ? "" : " ", ev_name);
slsmg_printf("%s", bf);
if (!current_entry)
ui_browser__set_color(browser, HE_COLORSET_TOP);
nr_events = convert_unit(nr_events, &unit);
- snprintf(bf, sizeof(bf), ": %ld%c%schunks LOST!", nr_events,
- unit, unit == ' ' ? "" : " ");
+ printed += scnprintf(bf, sizeof(bf), ": %ld%c%schunks LOST!",
+ nr_events, unit, unit == ' ' ? "" : " ");
warn = bf;
}
projects / linux-flexiantxendom0-3.2.10.git / commitdiff