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perf symbols: Cache /proc/kallsyms files by build-id

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So that when we don't have a vmlinux handy we can store the
kallsyms for later use by 'perf report'.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263501006-14185-3-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
2010-01-14 18:30:06 -02:00
committed by Ingo Molnar
parent 8d0591f6ad
commit 9e201442de
5 changed files with 80 additions and 20 deletions
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2
tools/perf/util/event.c
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@ -245,7 +245,7 @@ int event__synthesize_kernel_mmap(event__handler_t process,
*/
struct process_symbol_args args = { .name = symbol_name, };
if (kallsyms__parse(&args, find_symbol_cb) <= 0)
if (kallsyms__parse("/proc/kallsyms", &args, find_symbol_cb) <= 0)
return -ENOENT;
size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename),