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-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
6 files changed, 132 insertions, 31 deletions
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index cb20ae1..dc51bc5 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 0000000..9abe6c1
--- /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 e53bc91..268e5f8 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 10eb306..778668a 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 68a69a1..2af156a 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 9bfc0e0..7c196c5 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