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OpenCloudOS-Kernel
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perf_counter: tools: report: Add vmlinux support 

Allow to use vmlinux instead of kallsyms.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20090527182100.740018486@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-05-27 20:20:23 +02:00 committed by Ingo Molnar
parent b7a16eac5e
commit 450aaa2b2a
1 changed files with 36 additions and 1 deletions
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37
Documentation/perf_counter/builtin-report.c
View File

@ -19,6 +19,7 @@
#define SHOW_HV 4
static char const *input_name = "perf.data";
static char *vmlinux = NULL;
static int input;
static int show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@ -532,6 +533,39 @@ out_delete_dso:
return -1;
}
static int load_kernel(void)
{
int fd, nr;
if (!vmlinux)
goto kallsyms;
fd = open(vmlinux, O_RDONLY);
if (fd < 0)
goto kallsyms;
kernel_dso = dso__new("[kernel]");
if (!kernel_dso)
goto fail_open;
nr = dso__load_sym(kernel_dso, fd, vmlinux);
if (nr <= 0)
goto fail_load;
dsos__add(kernel_dso);
close(fd);
return 0;
fail_load:
dso__delete(kernel_dso);
fail_open:
close(fd);
kallsyms:
return load_kallsyms();
}
struct map {
struct list_head node;
uint64_t start;
@ -850,7 +884,7 @@ static int __cmd_report(void)
exit(0);
}
if (load_kallsyms() < 0) {
if (load_kernel() < 0) {
perror("failed to open kallsyms");
return EXIT_FAILURE;
}
@ -1039,6 +1073,7 @@ static const struct option options[] = {
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_END()
};