perf_counter tools: Make symbol loading consistently return number of loaded symbols

perf_counter tools: Make symbol loading consistently return number of loaded symbols.

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: <1246514758.13293.42.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 132de8b..3becc8a 100644 (file)
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -172,7 +172,7 @@ static int load_kernel(void)
                return -1;
 
        err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose);
-       if (err) {
+       if (err <= 0) {
                dso__delete(kernel_dso);
                kernel_dso = NULL;
        } else

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index be1b758..58d1612 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -189,7 +189,7 @@ static int load_kernel(void)
                return -1;
 
        err = dso__load_kernel(kernel_dso, vmlinux, NULL, verbose);
-       if (err) {
+       if (err <= 0) {
                dso__delete(kernel_dso);
                kernel_dso = NULL;
        } else

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index cdc74cf..97fde1d 100644 (file)
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -364,7 +364,7 @@ static int parse_symbols(void)
        if (kernel_dso == NULL)
                return -1;
 
-       if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1) != 0)
+       if (dso__load_kernel(kernel_dso, NULL, symbol_filter, 1) <= 0)
                goto out_delete_dso;
 
        node = rb_first(&kernel_dso->syms);

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 78c2efd..c077b6a 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -146,6 +146,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
        char *line = NULL;
        size_t n;
        FILE *file = fopen("/proc/kallsyms", "r");
+       int count = 0;
 
        if (file == NULL)
                goto out_failure;
@@ -188,8 +189,10 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
 
                if (filter && filter(self, sym))
                        symbol__delete(sym, self->sym_priv_size);
-               else
+               else {
                        dso__insert_symbol(self, sym);
+                       count++;
+               }
        }
 
        /*
@@ -212,7 +215,7 @@ static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter, int verb
        free(line);
        fclose(file);
 
-       return 0;
+       return count;
 
 out_delete_line:
        free(line);
@@ -639,7 +642,7 @@ int dso__load_kernel(struct dso *self, const char *vmlinux,
        if (vmlinux)
                err = dso__load_vmlinux(self, vmlinux, filter, verbose);
 
-       if (err < 0)
+       if (err <= 0)
                err = dso__load_kallsyms(self, filter, verbose);
 
        return err;