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Diffstat (limited to 'tools/perf/util/probe-event.c')
-rw-r--r--tools/perf/util/probe-event.c108
1 files changed, 107 insertions, 1 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 29465d44004..8f056884969 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -37,6 +37,8 @@
#include "string.h"
#include "strlist.h"
#include "debug.h"
+#include "cache.h"
+#include "color.h"
#include "parse-events.h" /* For debugfs_path */
#include "probe-event.h"
@@ -62,6 +64,42 @@ static int e_snprintf(char *str, size_t size, const char *format, ...)
return ret;
}
+void parse_line_range_desc(const char *arg, struct line_range *lr)
+{
+ const char *ptr;
+ char *tmp;
+ /*
+ * <Syntax>
+ * SRC:SLN[+NUM|-ELN]
+ * FUNC[:SLN[+NUM|-ELN]]
+ */
+ ptr = strchr(arg, ':');
+ if (ptr) {
+ lr->start = (unsigned int)strtoul(ptr + 1, &tmp, 0);
+ if (*tmp == '+')
+ lr->end = lr->start + (unsigned int)strtoul(tmp + 1,
+ &tmp, 0);
+ else if (*tmp == '-')
+ lr->end = (unsigned int)strtoul(tmp + 1, &tmp, 0);
+ else
+ lr->end = 0;
+ pr_debug("Line range is %u to %u\n", lr->start, lr->end);
+ if (lr->end && lr->start > lr->end)
+ semantic_error("Start line must be smaller"
+ " than end line.");
+ if (*tmp != '\0')
+ semantic_error("Tailing with invalid character '%d'.",
+ *tmp);
+ tmp = strndup(arg, (ptr - arg));
+ } else
+ tmp = strdup(arg);
+
+ if (strchr(tmp, '.'))
+ lr->file = tmp;
+ else
+ lr->function = tmp;
+}
+
/* Check the name is good for event/group */
static bool check_event_name(const char *name)
{
@@ -272,6 +310,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
int ret;
pp->probes[0] = buf = zalloc(MAX_CMDLEN);
+ pp->found = 1;
if (!buf)
die("Failed to allocate memory by zalloc.");
if (pp->offset) {
@@ -294,6 +333,7 @@ int synthesize_perf_probe_point(struct probe_point *pp)
error:
free(pp->probes[0]);
pp->probes[0] = NULL;
+ pp->found = 0;
}
return ret;
}
@@ -368,7 +408,7 @@ static int open_kprobe_events(int flags, int mode)
if (ret < 0) {
if (errno == ENOENT)
die("kprobe_events file does not exist -"
- " please rebuild with CONFIG_KPROBE_TRACER.");
+ " please rebuild with CONFIG_KPROBE_EVENT.");
else
die("Could not open kprobe_events file: %s",
strerror(errno));
@@ -455,6 +495,9 @@ void show_perf_probe_events(void)
struct strlist *rawlist;
struct str_node *ent;
+ setup_pager();
+
+ memset(&pp, 0, sizeof(pp));
fd = open_kprobe_events(O_RDONLY, 0);
rawlist = get_trace_kprobe_event_rawlist(fd);
close(fd);
@@ -675,3 +718,66 @@ void del_trace_kprobe_events(struct strlist *dellist)
close(fd);
}
+#define LINEBUF_SIZE 256
+
+static void show_one_line(FILE *fp, unsigned int l, bool skip, bool show_num)
+{
+ char buf[LINEBUF_SIZE];
+ const char *color = PERF_COLOR_BLUE;
+
+ if (fgets(buf, LINEBUF_SIZE, fp) == NULL)
+ goto error;
+ if (!skip) {
+ if (show_num)
+ fprintf(stdout, "%7u %s", l, buf);
+ else
+ color_fprintf(stdout, color, " %s", buf);
+ }
+
+ while (strlen(buf) == LINEBUF_SIZE - 1 &&
+ buf[LINEBUF_SIZE - 2] != '\n') {
+ if (fgets(buf, LINEBUF_SIZE, fp) == NULL)
+ goto error;
+ if (!skip) {
+ if (show_num)
+ fprintf(stdout, "%s", buf);
+ else
+ color_fprintf(stdout, color, "%s", buf);
+ }
+ }
+ return;
+error:
+ if (feof(fp))
+ die("Source file is shorter than expected.");
+ else
+ die("File read error: %s", strerror(errno));
+}
+
+void show_line_range(struct line_range *lr)
+{
+ unsigned int l = 1;
+ struct line_node *ln;
+ FILE *fp;
+
+ setup_pager();
+
+ if (lr->function)
+ fprintf(stdout, "<%s:%d>\n", lr->function,
+ lr->start - lr->offset);
+ else
+ fprintf(stdout, "<%s:%d>\n", lr->file, lr->start);
+
+ fp = fopen(lr->path, "r");
+ if (fp == NULL)
+ die("Failed to open %s: %s", lr->path, strerror(errno));
+ /* Skip to starting line number */
+ while (l < lr->start)
+ show_one_line(fp, l++, true, false);
+
+ list_for_each_entry(ln, &lr->line_list, list) {
+ while (ln->line > l)
+ show_one_line(fp, (l++) - lr->offset, false, false);
+ show_one_line(fp, (l++) - lr->offset, false, true);
+ }
+ fclose(fp);
+}