From d380b34830cc76461feab012f0bc52b01e65087c Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 7 Aug 2013 14:38:48 +0300 Subject: [PATCH] perf tests: Adjust the vmlinux symtab matches kallsyms test The vmlinux maps now map to the dso and the symbol values are now file offsets. For comparison with kallsyms the virtual memory address is needed which is obtained by unmapping the symbol value. The "vmlinux symtab matches kallsyms" is adjusted accordingly. Signed-off-by: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1375875537-4509-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/tests/vmlinux-kallsyms.c | 32 +++++++++++++++++++---------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/tools/perf/tests/vmlinux-kallsyms.c b/tools/perf/tests/vmlinux-kallsyms.c index add15392c622..e2e14984c3a0 100644 --- a/tools/perf/tests/vmlinux-kallsyms.c +++ b/tools/perf/tests/vmlinux-kallsyms.c @@ -25,6 +25,7 @@ int test__vmlinux_matches_kallsyms(void) struct machine kallsyms, vmlinux; enum map_type type = MAP__FUNCTION; struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", }; + u64 mem_start, mem_end; /* * Step 1: @@ -123,10 +124,14 @@ int test__vmlinux_matches_kallsyms(void) if (sym->start == sym->end) continue; - first_pair = machine__find_kernel_symbol(&kallsyms, type, sym->start, NULL, NULL); + mem_start = vmlinux_map->unmap_ip(vmlinux_map, sym->start); + mem_end = vmlinux_map->unmap_ip(vmlinux_map, sym->end); + + first_pair = machine__find_kernel_symbol(&kallsyms, type, + mem_start, NULL, NULL); pair = first_pair; - if (pair && pair->start == sym->start) { + if (pair && pair->start == mem_start) { next_pair: if (strcmp(sym->name, pair->name) == 0) { /* @@ -138,10 +143,11 @@ next_pair: * off the real size. More than that and we * _really_ have a problem. */ - s64 skew = sym->end - pair->end; + s64 skew = mem_end - pair->end; if (llabs(skew) >= page_size) pr_debug("%#" PRIx64 ": diff end addr for %s v: %#" PRIx64 " k: %#" PRIx64 "\n", - sym->start, sym->name, sym->end, pair->end); + mem_start, sym->name, mem_end, + pair->end); /* * Do not count this as a failure, because we @@ -159,7 +165,7 @@ detour: if (nnd) { struct symbol *next = rb_entry(nnd, struct symbol, rb_node); - if (next->start == sym->start) { + if (next->start == mem_start) { pair = next; goto next_pair; } @@ -172,10 +178,11 @@ detour: } pr_debug("%#" PRIx64 ": diff name v: %s k: %s\n", - sym->start, sym->name, pair->name); + mem_start, sym->name, pair->name); } } else - pr_debug("%#" PRIx64 ": %s not on kallsyms\n", sym->start, sym->name); + pr_debug("%#" PRIx64 ": %s not on kallsyms\n", + mem_start, sym->name); err = -1; } @@ -208,16 +215,19 @@ detour: for (nd = rb_first(&vmlinux.kmaps.maps[type]); nd; nd = rb_next(nd)) { struct map *pos = rb_entry(nd, struct map, rb_node), *pair; - pair = map_groups__find(&kallsyms.kmaps, type, pos->start); + mem_start = vmlinux_map->unmap_ip(vmlinux_map, pos->start); + mem_end = vmlinux_map->unmap_ip(vmlinux_map, pos->end); + + pair = map_groups__find(&kallsyms.kmaps, type, mem_start); if (pair == NULL || pair->priv) continue; - if (pair->start == pos->start) { + if (pair->start == mem_start) { pair->priv = 1; pr_info(" %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s in kallsyms as", pos->start, pos->end, pos->pgoff, pos->dso->name); - if (pos->pgoff != pair->pgoff || pos->end != pair->end) - pr_info(": \n*%" PRIx64 "-%" PRIx64 " %" PRIx64 "", + if (mem_end != pair->end) + pr_info(":\n*%" PRIx64 "-%" PRIx64 " %" PRIx64, pair->start, pair->end, pair->pgoff); pr_info(" %s\n", pair->dso->name); pair->priv = 1; -- 2.30.2