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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-06 09:10:36 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-06 09:10:36 -0400
commitdb8262787e82b5c0fa57bd9d676add187519a751 (patch)
tree03f427d0c825a9734b0f468e74eade92bdcb714a /tools
parentc98f5827f8f0e0cb075075def7f0d210992ef06d (diff)
parentf282f7a0ecc3e0b8fd8532a6c3e9401534cb907c (diff)
downloadlinux-stericsson-db8262787e82b5c0fa57bd9d676add187519a751.tar.gz
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "Mostly tooling fixes and some late tooling updates, plus two perf related printk message fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tests bpf: Use SyS_epoll_wait alias perf tests: objdump output can contain multi byte chunks perf record: Add --sample-cpu option perf hists: Introduce output_resort_cb method perf tools: Move config/Makefile into Makefile.config perf tests: Add test for bitmap_scnprintf function tools lib: Add bitmap_and function tools lib: Add bitmap_scnprintf function tools lib: Add bitmap_alloc function tools lib traceevent: Ignore generated library files perf tools: Fix build failure on perl script context perf/core: Change log level for duration warning to KERN_INFO perf annotate: Plug filename string leak perf annotate: Introduce strerror for handling symbol__disassemble() errors perf annotate: Rename symbol__annotate() to symbol__disassemble() perf/x86: Modify error message in virtualized environment perf target: str_error_r() always returns the buffer it receives perf annotate: Use pipe + fork instead of popen perf evsel: Introduce constructor for cycles event
Diffstat (limited to 'tools')
-rw-r--r--tools/include/linux/bitmap.h37
-rw-r--r--tools/lib/bitmap.c44
-rw-r--r--tools/lib/traceevent/.gitignore1
-rw-r--r--tools/perf/Documentation/perf-record.txt3
-rw-r--r--tools/perf/Makefile.config (renamed from tools/perf/config/Makefile)0
-rw-r--r--tools/perf/Makefile.perf6
-rw-r--r--tools/perf/builtin-record.c1
-rw-r--r--tools/perf/builtin-top.c6
-rw-r--r--tools/perf/perf.h1
-rw-r--r--tools/perf/scripts/perl/Perf-Trace-Util/Build4
-rw-r--r--tools/perf/tests/Build1
-rw-r--r--tools/perf/tests/bitmap.c53
-rw-r--r--tools/perf/tests/bpf-script-example.c4
-rw-r--r--tools/perf/tests/builtin-test.c4
-rw-r--r--tools/perf/tests/code-reading.c100
-rw-r--r--tools/perf/tests/tests.h1
-rw-r--r--tools/perf/ui/browsers/annotate.c9
-rw-r--r--tools/perf/ui/gtk/annotate.c8
-rw-r--r--tools/perf/util/annotate.c116
-rw-r--r--tools/perf/util/annotate.h22
-rw-r--r--tools/perf/util/evlist.c22
-rw-r--r--tools/perf/util/evsel.c30
-rw-r--r--tools/perf/util/evsel.h2
-rw-r--r--tools/perf/util/hist.c15
-rw-r--r--tools/perf/util/hist.h4
-rw-r--r--tools/perf/util/target.c6
26 files changed, 394 insertions, 106 deletions
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 28f5493da491..43c1c5021e4b 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h
@@ -3,6 +3,7 @@
#include <string.h>
#include <linux/bitops.h>
+#include <stdlib.h>
#define DECLARE_BITMAP(name,bits) \
unsigned long name[BITS_TO_LONGS(bits)]
@@ -10,6 +11,8 @@
int __bitmap_weight(const unsigned long *bitmap, int bits);
void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
const unsigned long *bitmap2, int bits);
+int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits);
#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
@@ -65,4 +68,38 @@ static inline int test_and_set_bit(int nr, unsigned long *addr)
return (old & mask) != 0;
}
+/**
+ * bitmap_alloc - Allocate bitmap
+ * @nr: Bit to set
+ */
+static inline unsigned long *bitmap_alloc(int nbits)
+{
+ return calloc(1, BITS_TO_LONGS(nbits) * sizeof(unsigned long));
+}
+
+/*
+ * bitmap_scnprintf - print bitmap list into buffer
+ * @bitmap: bitmap
+ * @nbits: size of bitmap
+ * @buf: buffer to store output
+ * @size: size of @buf
+ */
+size_t bitmap_scnprintf(unsigned long *bitmap, int nbits,
+ char *buf, size_t size);
+
+/**
+ * bitmap_and - Do logical and on bitmaps
+ * @dst: resulting bitmap
+ * @src1: operand 1
+ * @src2: operand 2
+ * @nbits: size of bitmap
+ */
+static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
+ const unsigned long *src2, unsigned int nbits)
+{
+ if (small_const_nbits(nbits))
+ return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0;
+ return __bitmap_and(dst, src1, src2, nbits);
+}
+
#endif /* _PERF_BITOPS_H */
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c
index 0a1adc1111fd..38748b0e342f 100644
--- a/tools/lib/bitmap.c
+++ b/tools/lib/bitmap.c
@@ -29,3 +29,47 @@ void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] | bitmap2[k];
}
+
+size_t bitmap_scnprintf(unsigned long *bitmap, int nbits,
+ char *buf, size_t size)
+{
+ /* current bit is 'cur', most recently seen range is [rbot, rtop] */
+ int cur, rbot, rtop;
+ bool first = true;
+ size_t ret = 0;
+
+ rbot = cur = find_first_bit(bitmap, nbits);
+ while (cur < nbits) {
+ rtop = cur;
+ cur = find_next_bit(bitmap, nbits, cur + 1);
+ if (cur < nbits && cur <= rtop + 1)
+ continue;
+
+ if (!first)
+ ret += scnprintf(buf + ret, size - ret, ",");
+
+ first = false;
+
+ ret += scnprintf(buf + ret, size - ret, "%d", rbot);
+ if (rbot < rtop)
+ ret += scnprintf(buf + ret, size - ret, "-%d", rtop);
+
+ rbot = cur;
+ }
+ return ret;
+}
+
+int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits)
+{
+ unsigned int k;
+ unsigned int lim = bits/BITS_PER_LONG;
+ unsigned long result = 0;
+
+ for (k = 0; k < lim; k++)
+ result |= (dst[k] = bitmap1[k] & bitmap2[k]);
+ if (bits % BITS_PER_LONG)
+ result |= (dst[k] = bitmap1[k] & bitmap2[k] &
+ BITMAP_LAST_WORD_MASK(bits));
+ return result != 0;
+}
diff --git a/tools/lib/traceevent/.gitignore b/tools/lib/traceevent/.gitignore
index 3c60335fe7be..9e9f25fb1922 100644
--- a/tools/lib/traceevent/.gitignore
+++ b/tools/lib/traceevent/.gitignore
@@ -1,2 +1,3 @@
TRACEEVENT-CFLAGS
libtraceevent-dynamic-list
+libtraceevent.so.*
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 69966abf65d1..379a2bed07c0 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -192,6 +192,9 @@ OPTIONS
--period::
Record the sample period.
+--sample-cpu::
+ Record the sample cpu.
+
-n::
--no-samples::
Don't sample.
diff --git a/tools/perf/config/Makefile b/tools/perf/Makefile.config
index 24803c58049a..24803c58049a 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/Makefile.config
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 6641abb97f0a..2d9087501633 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -161,7 +161,7 @@ TRACE_EVENT_DIR = $(srctree)/tools/lib/traceevent/
BPF_DIR = $(srctree)/tools/lib/bpf/
SUBCMD_DIR = $(srctree)/tools/lib/subcmd/
-# include config/Makefile by default and rule out
+# include Makefile.config by default and rule out
# non-config cases
config := 1
@@ -183,7 +183,7 @@ ifeq ($(filter feature-dump,$(MAKECMDGOALS)),feature-dump)
FEATURE_TESTS := all
endif
endif
-include config/Makefile
+include Makefile.config
endif
ifeq ($(config),0)
@@ -706,7 +706,7 @@ $(INSTALL_DOC_TARGETS):
### Cleaning rules
#
-# This is here, not in config/Makefile, because config/Makefile does
+# This is here, not in Makefile.config, because Makefile.config does
# not get included for the clean target:
#
config-clean:
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 8f2c16d9275f..6355902fbfc8 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1434,6 +1434,7 @@ struct option __record_options[] = {
OPT_BOOLEAN('s', "stat", &record.opts.inherit_stat,
"per thread counts"),
OPT_BOOLEAN('d', "data", &record.opts.sample_address, "Record the sample addresses"),
+ OPT_BOOLEAN(0, "sample-cpu", &record.opts.sample_cpu, "Record the sample cpu"),
OPT_BOOLEAN_SET('T', "timestamp", &record.opts.sample_time,
&record.opts.sample_time_set,
"Record the sample timestamps"),
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index bd108683fcb8..418ed94756d3 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -128,10 +128,14 @@ static int perf_top__parse_source(struct perf_top *top, struct hist_entry *he)
return err;
}
- err = symbol__annotate(sym, map, 0);
+ err = symbol__disassemble(sym, map, 0);
if (err == 0) {
out_assign:
top->sym_filter_entry = he;
+ } else {
+ char msg[BUFSIZ];
+ symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg));
+ pr_err("Couldn't annotate %s: %s\n", sym->name, msg);
}
pthread_mutex_unlock(&notes->lock);
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index a7e0f1497244..cb0f1356ff81 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -52,6 +52,7 @@ struct record_opts {
bool sample_weight;
bool sample_time;
bool sample_time_set;
+ bool sample_cpu;
bool period;
bool running_time;
bool full_auxtrace;
diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/Build b/tools/perf/scripts/perl/Perf-Trace-Util/Build
index 928e110179cb..34faecf774ae 100644
--- a/tools/perf/scripts/perl/Perf-Trace-Util/Build
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/Build
@@ -1,3 +1,5 @@
libperf-y += Context.o
-CFLAGS_Context.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs -Wno-undef -Wno-switch-default
+CFLAGS_Context.o += $(PERL_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes
+CFLAGS_Context.o += -Wno-unused-parameter -Wno-nested-externs -Wno-undef
+CFLAGS_Context.o += -Wno-switch-default -Wno-shadow
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index cb20ae1c0d35..dc51bc570e51 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -41,6 +41,7 @@ perf-y += event-times.o
perf-y += backward-ring-buffer.o
perf-y += sdt.o
perf-y += is_printable_array.o
+perf-y += bitmap.o
$(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
$(call rule_mkdir)
diff --git a/tools/perf/tests/bitmap.c b/tools/perf/tests/bitmap.c
new file mode 100644
index 000000000000..9abe6c13090f
--- /dev/null
+++ b/tools/perf/tests/bitmap.c
@@ -0,0 +1,53 @@
+#include <linux/compiler.h>
+#include <linux/bitmap.h>
+#include "tests.h"
+#include "cpumap.h"
+#include "debug.h"
+
+#define NBITS 100
+
+static unsigned long *get_bitmap(const char *str, int nbits)
+{
+ struct cpu_map *map = cpu_map__new(str);
+ unsigned long *bm = NULL;
+ int i;
+
+ bm = bitmap_alloc(nbits);
+
+ if (map && bm) {
+ bitmap_zero(bm, nbits);
+
+ for (i = 0; i < map->nr; i++)
+ set_bit(map->map[i], bm);
+ }
+
+ if (map)
+ cpu_map__put(map);
+ return bm;
+}
+
+static int test_bitmap(const char *str)
+{
+ unsigned long *bm = get_bitmap(str, NBITS);
+ char buf[100];
+ int ret;
+
+ bitmap_scnprintf(bm, NBITS, buf, sizeof(buf));
+ pr_debug("bitmap: %s\n", buf);
+
+ ret = !strcmp(buf, str);
+ free(bm);
+ return ret;
+}
+
+int test__bitmap_print(int subtest __maybe_unused)
+{
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,5"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3,5,7,9,11,13,15,17,19,21-40"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("2-5"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1,3-6,8-10,24,35-37"));
+ TEST_ASSERT_VAL("failed to convert map", test_bitmap("1-10,12-20,22-30,32-40"));
+ return 0;
+}
diff --git a/tools/perf/tests/bpf-script-example.c b/tools/perf/tests/bpf-script-example.c
index e53bc91fa260..268e5f8e4aa2 100644
--- a/tools/perf/tests/bpf-script-example.c
+++ b/tools/perf/tests/bpf-script-example.c
@@ -31,8 +31,8 @@ struct bpf_map_def SEC("maps") flip_table = {
.max_entries = 1,
};
-SEC("func=sys_epoll_wait")
-int bpf_func__sys_epoll_wait(void *ctx)
+SEC("func=SyS_epoll_wait")
+int bpf_func__SyS_epoll_wait(void *ctx)
{
int ind =0;
int *flag = bpf_map_lookup_elem(&flip_table, &ind);
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 10eb30686c9c..778668a2a966 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -226,6 +226,10 @@ static struct test generic_tests[] = {
.func = test__is_printable_array,
},
{
+ .desc = "Test bitmap print",
+ .func = test__bitmap_print,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 68a69a195545..2af156a8d4e5 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -33,44 +33,86 @@ static unsigned int hex(char c)
return c - 'A' + 10;
}
-static size_t read_objdump_line(const char *line, size_t line_len, void *buf,
- size_t len)
+static size_t read_objdump_chunk(const char **line, unsigned char **buf,
+ size_t *buf_len)
{
- const char *p;
- size_t i, j = 0;
-
- /* Skip to a colon */
- p = strchr(line, ':');
- if (!p)
- return 0;
- i = p + 1 - line;
+ size_t bytes_read = 0;
+ unsigned char *chunk_start = *buf;
/* Read bytes */
- while (j < len) {
+ while (*buf_len > 0) {
char c1, c2;
- /* Skip spaces */
- for (; i < line_len; i++) {
- if (!isspace(line[i]))
- break;
- }
/* Get 2 hex digits */
- if (i >= line_len || !isxdigit(line[i]))
+ c1 = *(*line)++;
+ if (!isxdigit(c1))
break;
- c1 = line[i++];
- if (i >= line_len || !isxdigit(line[i]))
+ c2 = *(*line)++;
+ if (!isxdigit(c2))
break;
- c2 = line[i++];
- /* Followed by a space */
- if (i < line_len && line[i] && !isspace(line[i]))
+
+ /* Store byte and advance buf */
+ **buf = (hex(c1) << 4) | hex(c2);
+ (*buf)++;
+ (*buf_len)--;
+ bytes_read++;
+
+ /* End of chunk? */
+ if (isspace(**line))
break;
- /* Store byte */
- *(unsigned char *)buf = (hex(c1) << 4) | hex(c2);
- buf += 1;
- j++;
}
+
+ /*
+ * objdump will display raw insn as LE if code endian
+ * is LE and bytes_per_chunk > 1. In that case reverse
+ * the chunk we just read.
+ *
+ * see disassemble_bytes() at binutils/objdump.c for details
+ * how objdump chooses display endian)
+ */
+ if (bytes_read > 1 && !bigendian()) {
+ unsigned char *chunk_end = chunk_start + bytes_read - 1;
+ unsigned char tmp;
+
+ while (chunk_start < chunk_end) {
+ tmp = *chunk_start;
+ *chunk_start = *chunk_end;
+ *chunk_end = tmp;
+ chunk_start++;
+ chunk_end--;
+ }
+ }
+
+ return bytes_read;
+}
+
+static size_t read_objdump_line(const char *line, unsigned char *buf,
+ size_t buf_len)
+{
+ const char *p;
+ size_t ret, bytes_read = 0;
+
+ /* Skip to a colon */
+ p = strchr(line, ':');
+ if (!p)
+ return 0;
+ p++;
+
+ /* Skip initial spaces */
+ while (*p) {
+ if (!isspace(*p))
+ break;
+ p++;
+ }
+
+ do {
+ ret = read_objdump_chunk(&p, &buf, &buf_len);
+ bytes_read += ret;
+ p++;
+ } while (ret > 0);
+
/* return number of successfully read bytes */
- return j;
+ return bytes_read;
}
static int read_objdump_output(FILE *f, void *buf, size_t *len, u64 start_addr)
@@ -95,7 +137,7 @@ static int read_objdump_output(FILE *f, void *buf, size_t *len, u64 start_addr)
}
/* read objdump data into temporary buffer */
- read_bytes = read_objdump_line(line, ret, tmp, sizeof(tmp));
+ read_bytes = read_objdump_line(line, tmp, sizeof(tmp));
if (!read_bytes)
continue;
@@ -152,7 +194,7 @@ static int read_via_objdump(const char *filename, u64 addr, void *buf,
ret = read_objdump_output(f, buf, &len, addr);
if (len) {
- pr_debug("objdump read too few bytes\n");
+ pr_debug("objdump read too few bytes: %zd\n", len);
if (!ret)
ret = len;
}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 9bfc0e06c61a..7c196c585472 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -90,6 +90,7 @@ int test__backward_ring_buffer(int subtest);
int test__cpu_map_print(int subtest);
int test__sdt_event(int subtest);
int test__is_printable_array(int subtest);
+int test__bitmap_print(int subtest);
#if defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
index 29dc6d20364e..2e2d10022355 100644
--- a/tools/perf/ui/browsers/annotate.c
+++ b/tools/perf/ui/browsers/annotate.c
@@ -1026,7 +1026,7 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
.use_navkeypressed = true,
},
};
- int ret = -1;
+ int ret = -1, err;
int nr_pcnt = 1;
size_t sizeof_bdl = sizeof(struct browser_disasm_line);
@@ -1050,8 +1050,11 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map,
(nr_pcnt - 1);
}
- if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
- ui__error("%s", ui_helpline__last_msg);
+ err = symbol__disassemble(sym, map, sizeof_bdl);
+ if (err) {
+ char msg[BUFSIZ];
+ symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg));
+ ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
goto out_free_offsets;
}
diff --git a/tools/perf/ui/gtk/annotate.c b/tools/perf/ui/gtk/annotate.c
index 9c7ff8d31b27..42d319927762 100644
--- a/tools/perf/ui/gtk/annotate.c
+++ b/tools/perf/ui/gtk/annotate.c
@@ -162,12 +162,16 @@ static int symbol__gtk_annotate(struct symbol *sym, struct map *map,
GtkWidget *notebook;
GtkWidget *scrolled_window;
GtkWidget *tab_label;
+ int err;
if (map->dso->annotate_warned)
return -1;
- if (symbol__annotate(sym, map, 0) < 0) {
- ui__error("%s", ui_helpline__current);
+ err = symbol__disassemble(sym, map, 0);
+ if (err) {
+ char msg[BUFSIZ];
+ symbol__strerror_disassemble(sym, map, err, msg, sizeof(msg));
+ ui__error("Couldn't annotate %s: %s\n", sym->name, msg);
return -1;
}
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index e9825fe825fd..4024d309bb00 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1123,7 +1123,46 @@ static void delete_last_nop(struct symbol *sym)
}
}
-int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
+int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
+ int errnum, char *buf, size_t buflen)
+{
+ struct dso *dso = map->dso;
+
+ BUG_ON(buflen == 0);
+
+ if (errnum >= 0) {
+ str_error_r(errnum, buf, buflen);
+ return 0;
+ }
+
+ switch (errnum) {
+ case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
+ char bf[SBUILD_ID_SIZE + 15] = " with build id ";
+ char *build_id_msg = NULL;
+
+ if (dso->has_build_id) {
+ build_id__sprintf(dso->build_id,
+ sizeof(dso->build_id), bf + 15);
+ build_id_msg = bf;
+ }
+ scnprintf(buf, buflen,
+ "No vmlinux file%s\nwas found in the path.\n\n"
+ "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
+ "Please use:\n\n"
+ " perf buildid-cache -vu vmlinux\n\n"
+ "or:\n\n"
+ " --vmlinux vmlinux\n", build_id_msg ?: "");
+ }
+ break;
+ default:
+ scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
+ break;
+ }
+
+ return 0;
+}
+
+int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize)
{
struct dso *dso = map->dso;
char *filename = dso__build_id_filename(dso, NULL, 0);
@@ -1134,22 +1173,20 @@ int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
char symfs_filename[PATH_MAX];
struct kcore_extract kce;
bool delete_extract = false;
+ int stdout_fd[2];
int lineno = 0;
int nline;
+ pid_t pid;
if (filename)
symbol__join_symfs(symfs_filename, filename);
if (filename == NULL) {
- if (dso->has_build_id) {
- pr_err("Can't annotate %s: not enough memory\n",
- sym->name);
- return -ENOMEM;
- }
+ if (dso->has_build_id)
+ return ENOMEM;
goto fallback;
- } else if (dso__is_kcore(dso)) {
- goto fallback;
- } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
+ } else if (dso__is_kcore(dso) ||
+ readlink(symfs_filename, command, sizeof(command)) < 0 ||
strstr(command, DSO__NAME_KALLSYMS) ||
access(symfs_filename, R_OK)) {
free(filename);
@@ -1166,27 +1203,7 @@ fallback:
if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
!dso__is_kcore(dso)) {
- char bf[SBUILD_ID_SIZE + 15] = " with build id ";
- char *build_id_msg = NULL;
-
- if (dso->annotate_warned)
- goto out_free_filename;
-
- if (dso->has_build_id) {
- build_id__sprintf(dso->build_id,
- sizeof(dso->build_id), bf + 15);
- build_id_msg = bf;
- }
- err = -ENOENT;
- dso->annotate_warned = 1;
- pr_err("Can't annotate %s:\n\n"
- "No vmlinux file%s\nwas found in the path.\n\n"
- "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
- "Please use:\n\n"
- " perf buildid-cache -vu vmlinux\n\n"
- "or:\n\n"
- " --vmlinux vmlinux\n",
- sym->name, build_id_msg ?: "");
+ err = SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
goto out_free_filename;
}
@@ -1258,9 +1275,32 @@ fallback:
pr_debug("Executing: %s\n", command);
- file = popen(command, "r");
+ err = -1;
+ if (pipe(stdout_fd) < 0) {
+ pr_err("Failure creating the pipe to run %s\n", command);
+ goto out_remove_tmp;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ pr_err("Failure forking to run %s\n", command);
+ goto out_close_stdout;
+ }
+
+ if (pid == 0) {
+ close(stdout_fd[0]);
+ dup2(stdout_fd[1], 1);
+ close(stdout_fd[1]);
+ execl("/bin/sh", "sh", "-c", command, NULL);
+ perror(command);
+ exit(-1);
+ }
+
+ close(stdout_fd[1]);
+
+ file = fdopen(stdout_fd[0], "r");
if (!file) {
- pr_err("Failure running %s\n", command);
+ pr_err("Failure creating FILE stream for %s\n", command);
/*
* If we were using debug info should retry with
* original binary.
@@ -1286,9 +1326,11 @@ fallback:
if (dso__is_kcore(dso))
delete_last_nop(sym);
- pclose(file);
-
+ fclose(file);
+ err = 0;
out_remove_tmp:
+ close(stdout_fd[0]);
+
if (dso__needs_decompress(dso))
unlink(symfs_filename);
out_free_filename:
@@ -1297,6 +1339,10 @@ out_free_filename:
if (free_filename)
free(filename);
return err;
+
+out_close_stdout:
+ close(stdout_fd[1]);
+ goto out_remove_tmp;
}
static void insert_source_line(struct rb_root *root, struct source_line *src_line)
@@ -1663,7 +1709,7 @@ int symbol__tty_annotate(struct symbol *sym, struct map *map,
struct rb_root source_line = RB_ROOT;
u64 len;
- if (symbol__annotate(sym, map, 0) < 0)
+ if (symbol__disassemble(sym, map, 0) < 0)
return -1;
len = symbol__size(sym);
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index a23084f54128..f67ccb027561 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -155,7 +155,27 @@ int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 addr);
int symbol__alloc_hist(struct symbol *sym);
void symbol__annotate_zero_histograms(struct symbol *sym);
-int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize);
+int symbol__disassemble(struct symbol *sym, struct map *map, size_t privsize);
+
+enum symbol_disassemble_errno {
+ SYMBOL_ANNOTATE_ERRNO__SUCCESS = 0,
+
+ /*
+ * Choose an arbitrary negative big number not to clash with standard
+ * errno since SUS requires the errno has distinct positive values.
+ * See 'Issue 6' in the link below.
+ *
+ * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+ */
+ __SYMBOL_ANNOTATE_ERRNO__START = -10000,
+
+ SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX = __SYMBOL_ANNOTATE_ERRNO__START,
+
+ __SYMBOL_ANNOTATE_ERRNO__END,
+};
+
+int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
+ int errnum, char *buf, size_t buflen);
int symbol__annotate_init(struct map *map, struct symbol *sym);
int symbol__annotate_printf(struct symbol *sym, struct map *map,
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 2a40b8e1def7..097b3ed77fdd 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -239,31 +239,13 @@ void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr)
int perf_evlist__add_default(struct perf_evlist *evlist)
{
- struct perf_event_attr attr = {
- .type = PERF_TYPE_HARDWARE,
- .config = PERF_COUNT_HW_CPU_CYCLES,
- };
- struct perf_evsel *evsel;
-
- event_attr_init(&attr);
+ struct perf_evsel *evsel = perf_evsel__new_cycles();
- perf_event_attr__set_max_precise_ip(&attr);
-
- evsel = perf_evsel__new(&attr);
if (evsel == NULL)
- goto error;
-
- /* use asprintf() because free(evsel) assumes name is allocated */
- if (asprintf(&evsel->name, "cycles%.*s",
- attr.precise_ip ? attr.precise_ip + 1 : 0, ":ppp") < 0)
- goto error_free;
+ return -ENOMEM;
perf_evlist__add(evlist, evsel);
return 0;
-error_free:
- perf_evsel__delete(evsel);
-error:
- return -ENOMEM;
}
int perf_evlist__add_dummy(struct perf_evlist *evlist)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 8c54df61fe64..d9b80ef881cd 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -253,6 +253,34 @@ struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx)
return evsel;
}
+struct perf_evsel *perf_evsel__new_cycles(void)
+{
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_CPU_CYCLES,
+ };
+ struct perf_evsel *evsel;
+
+ event_attr_init(&attr);
+
+ perf_event_attr__set_max_precise_ip(&attr);
+
+ evsel = perf_evsel__new(&attr);
+ if (evsel == NULL)
+ goto out;
+
+ /* use asprintf() because free(evsel) assumes name is allocated */
+ if (asprintf(&evsel->name, "cycles%.*s",
+ attr.precise_ip ? attr.precise_ip + 1 : 0, ":ppp") < 0)
+ goto error_free;
+out:
+ return evsel;
+error_free:
+ perf_evsel__delete(evsel);
+ evsel = NULL;
+ goto out;
+}
+
/*
* Returns pointer with encoded error via <linux/err.h> interface.
*/
@@ -854,7 +882,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
perf_evsel__set_sample_bit(evsel, REGS_INTR);
}
- if (target__has_cpu(&opts->target))
+ if (target__has_cpu(&opts->target) || opts->sample_cpu)
perf_evsel__set_sample_bit(evsel, CPU);
if (opts->period)
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 8a4a6c9f1480..4d44129e050b 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -175,6 +175,8 @@ static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *
return perf_evsel__newtp_idx(sys, name, 0);
}
+struct perf_evsel *perf_evsel__new_cycles(void);
+
struct event_format *event_format__new(const char *sys, const char *name);
void perf_evsel__init(struct perf_evsel *evsel,
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index a18d142cdca3..de15dbcdcecf 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1672,7 +1672,7 @@ static void __hists__insert_output_entry(struct rb_root *entries,
}
static void output_resort(struct hists *hists, struct ui_progress *prog,
- bool use_callchain)
+ bool use_callchain, hists__resort_cb_t cb)
{
struct rb_root *root;
struct rb_node *next;
@@ -1711,6 +1711,9 @@ static void output_resort(struct hists *hists, struct ui_progress *prog,
n = rb_entry(next, struct hist_entry, rb_node_in);
next = rb_next(&n->rb_node_in);
+ if (cb && cb(n))
+ continue;
+
__hists__insert_output_entry(&hists->entries, n, min_callchain_hits, use_callchain);
hists__inc_stats(hists, n);
@@ -1731,12 +1734,18 @@ void perf_evsel__output_resort(struct perf_evsel *evsel, struct ui_progress *pro
else
use_callchain = symbol_conf.use_callchain;
- output_resort(evsel__hists(evsel), prog, use_callchain);
+ output_resort(evsel__hists(evsel), prog, use_callchain, NULL);
}
void hists__output_resort(struct hists *hists, struct ui_progress *prog)
{
- output_resort(hists, prog, symbol_conf.use_callchain);
+ output_resort(hists, prog, symbol_conf.use_callchain, NULL);
+}
+
+void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
+ hists__resort_cb_t cb)
+{
+ output_resort(hists, prog, symbol_conf.use_callchain, cb);
}
static bool can_goto_child(struct hist_entry *he, enum hierarchy_move_dir hmd)
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 49aa4fac148f..0a1edf1ab450 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -153,8 +153,12 @@ int hist_entry__snprintf_alignment(struct hist_entry *he, struct perf_hpp *hpp,
struct perf_hpp_fmt *fmt, int printed);
void hist_entry__delete(struct hist_entry *he);
+typedef int (*hists__resort_cb_t)(struct hist_entry *he);
+
void perf_evsel__output_resort(struct perf_evsel *evsel, struct ui_progress *prog);
void hists__output_resort(struct hists *hists, struct ui_progress *prog);
+void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog,
+ hists__resort_cb_t cb);
int hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
diff --git a/tools/perf/util/target.c b/tools/perf/util/target.c
index 8cdcf4641c51..21c4d9b23c24 100644
--- a/tools/perf/util/target.c
+++ b/tools/perf/util/target.c
@@ -122,11 +122,7 @@ int target__strerror(struct target *target, int errnum,
BUG_ON(buflen == 0);
if (errnum >= 0) {
- const char *err = str_error_r(errnum, buf, buflen);
-
- if (err != buf)
- scnprintf(buf, buflen, "%s", err);
-
+ str_error_r(errnum, buf, buflen);
return 0;
}