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perf/urgent fixes:

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User visible:
 
 . Adjust symbols in VDSO to properly resolve its function names (Vladimir Nikulichev)
 
 . Improve error reporting for record session failure (Adrien BAK)
 
 . Fix 'Min time' counting in report command (Alexander Yarygin)
 
 Signed-off-by: Jiri Olsa <jolsa@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/urgent

Pull perf/urgent fixes from Jiri Olsa:

User visible changes:

  * Adjust symbols in VDSO to properly resolve its function names (Vladimir Nikulichev)

  * Improve error reporting for record session failure (Adrien BAK)

  * Fix 'Min time' counting in report command (Alexander Yarygin)

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2014-04-20 09:53:55 +02:00
commit fd741edc25
4 changed files with 12 additions and 2 deletions
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1
tools/perf/builtin-kvm.c
View File

@ -404,6 +404,7 @@ static struct kvm_event *kvm_alloc_init_event(struct event_key *key)
}
event->key = *key;
init_stats(&event->total.stats);
return event;
}

2
tools/perf/builtin-record.c
View File

@ -374,7 +374,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
session = perf_session__new(file, false, NULL);
if (session == NULL) {
pr_err("Not enough memory for reading perf file header\n");
pr_err("Perf session creation failed.\n");
return -1;
}

9
tools/perf/util/data.c
View File

@ -86,10 +86,17 @@ static int open_file_read(struct perf_data_file *file)
static int open_file_write(struct perf_data_file *file)
{
int fd;
if (check_backup(file))
return -1;
return open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR);
fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR);
if (fd < 0)
pr_err("failed to open %s : %s\n", file->path, strerror(errno));
return fd;
}
static int open_file(struct perf_data_file *file)

2
tools/perf/util/symbol-elf.c
View File

@ -6,6 +6,7 @@
#include <inttypes.h>
#include "symbol.h"
#include "vdso.h"
#include <symbol/kallsyms.h>
#include "debug.h"
@ -618,6 +619,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
GElf_Shdr shdr;
ss->adjust_symbols = (ehdr.e_type == ET_EXEC ||
ehdr.e_type == ET_REL ||
is_vdso_map(dso->short_name) ||
elf_section_by_name(elf, &ehdr, &shdr,
".gnu.prelink_undo",
NULL) != NULL);