perf_counter tools: Enable kernel module symbol loading in tools

Add the -m/--modules option to perf report and perf annotate,
which enables live module symbol/image loading. To be used
with -k/--vmlinux.

(Also give perf annotate a -P/--full-paths option.)

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1246514986.13293.48.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 8820568..08ea6c5 100644 (file)
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -43,6 +43,10 @@ static int           dump_trace = 0;
 
 static int             verbose;
 
+static int             modules;
+
+static int             full_paths;
+
 static int             print_line;
 
 static unsigned long   page_size;
@@ -171,7 +175,7 @@ static int load_kernel(void)
        if (!kernel_dso)
                return -1;
 
-       err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, 0);
+       err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, modules);
        if (err <= 0) {
                dso__delete(kernel_dso);
                kernel_dso = NULL;
@@ -1268,19 +1272,25 @@ static void print_summary(char *filename)
 
 static void annotate_sym(struct dso *dso, struct symbol *sym)
 {
-       char *filename = dso->name;
+       char *filename = dso->name, *d_filename;
        u64 start, end, len;
        char command[PATH_MAX*2];
        FILE *file;
 
        if (!filename)
                return;
-       if (dso == kernel_dso)
+       if (sym->module)
+               filename = sym->module->path;
+       else if (dso == kernel_dso)
                filename = vmlinux;
 
        start = sym->obj_start;
        if (!start)
                start = sym->start;
+       if (full_paths)
+               d_filename = filename;
+       else
+               d_filename = basename(filename);
 
        end = start + sym->end - sym->start + 1;
        len = sym->end - sym->start;
@@ -1291,13 +1301,14 @@ static void annotate_sym(struct dso *dso, struct symbol *sym)
        }
 
        printf("\n\n------------------------------------------------\n");
-       printf(" Percent |      Source code & Disassembly of %s\n", filename);
+       printf(" Percent |      Source code & Disassembly of %s\n", d_filename);
        printf("------------------------------------------------\n");
 
        if (verbose >= 2)
                printf("annotating [%p] %30s : [%p] %30s\n", dso, dso->name, sym, sym->name);
 
-       sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s", (u64)start, (u64)end, filename);
+       sprintf(command, "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s",
+                       (u64)start, (u64)end, filename, filename);
 
        if (verbose >= 3)
                printf("doing: %s\n", command);
@@ -1472,8 +1483,12 @@ static const struct option options[] = {
        OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
                    "dump raw trace in ASCII"),
        OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
+       OPT_BOOLEAN('m', "modules", &modules,
+                   "load module symbols - WARNING: use only with -k and LIVE kernel"),
        OPT_BOOLEAN('l', "print-line", &print_line,
                    "print matching source lines (may be slow)"),
+       OPT_BOOLEAN('P', "full-paths", &full_paths,
+                   "Don't shorten the displayed pathnames"),
        OPT_END()
 };
 

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 38d136f..b44476c 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -46,6 +46,8 @@ static int            dump_trace = 0;
 static int             verbose;
 #define eprintf(x...)  do { if (verbose) fprintf(stderr, x); } while (0)
 
+static int             modules;
+
 static int             full_paths;
 
 static unsigned long   page_size;
@@ -188,7 +190,7 @@ static int load_kernel(void)
        if (!kernel_dso)
                return -1;
 
-       err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, 0);
+       err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose, modules);
        if (err <= 0) {
                dso__delete(kernel_dso);
                kernel_dso = NULL;
@@ -648,6 +650,9 @@ sort__sym_print(FILE *fp, struct hist_entry *self)
                ret += fprintf(fp, "[%c] %s",
                        self->dso == kernel_dso ? 'k' :
                        self->dso == hypervisor_dso ? 'h' : '.', self->sym->name);
+
+               if (self->sym->module)
+                       ret += fprintf(fp, "\t[%s]", self->sym->module->name);
        } else {
                ret += fprintf(fp, "%#016llx", (u64)self->ip);
        }
@@ -1710,6 +1715,8 @@ static const struct option options[] = {
        OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
                    "dump raw trace in ASCII"),
        OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
+       OPT_BOOLEAN('m', "modules", &modules,
+                   "load module symbols - WARNING: use only with -k and LIVE kernel"),
        OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
                   "sort by key(s): pid, comm, dso, symbol, parent"),
        OPT_BOOLEAN('P', "full-paths", &full_paths,

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 9bb25fc..aa044ea 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -66,6 +66,7 @@ static unsigned int           page_size;
 static unsigned int            mmap_pages                      = 16;
 static int                     freq                            =  0;
 static int                     verbose                         =  0;
+static char                    *vmlinux                        =  NULL;
 
 static char                    *sym_filter;
 static unsigned long           filter_start;
@@ -265,7 +266,10 @@ static void print_sym_table(void)
                        printf("%9.1f %10ld - ", syme->weight, syme->snap_count);
 
                color_fprintf(stdout, color, "%4.1f%%", pcnt);
-               printf(" - %016llx : %s\n", sym->start, sym->name);
+               printf(" - %016llx : %s", sym->start, sym->name);
+               if (sym->module)
+                       printf("\t[%s]", sym->module->name);
+               printf("\n");
        }
 }
 
@@ -359,12 +363,13 @@ static int parse_symbols(void)
 {
        struct rb_node *node;
        struct symbol  *sym;
+       int modules = vmlinux ? 1 : 0;
 
        kernel_dso = dso__new("[kernel]", sizeof(struct sym_entry));
        if (kernel_dso == NULL)
                return -1;
 
-       if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1, 0) <= 0)
+       if (dso__load_kernel(kernel_dso, vmlinux, symbol_filter, verbose, modules) <= 0)
                goto out_delete_dso;
 
        node = rb_first(&kernel_dso->syms);
@@ -680,6 +685,7 @@ static const struct option options[] = {
                            "system-wide collection from all CPUs"),
        OPT_INTEGER('C', "CPU", &profile_cpu,
                    "CPU to profile on"),
+       OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
        OPT_INTEGER('m', "mmap-pages", &mmap_pages,
                    "number of mmap data pages"),
        OPT_INTEGER('r', "realtime", &realtime_prio,
@@ -709,6 +715,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
 {
        int counter;
 
+       symbol__init();
+
        page_size = sysconf(_SC_PAGE_SIZE);
 
        argc = parse_options(argc, argv, options, top_usage, 0);