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-rw-r--r--tools/perf/util/symbol-elf.c46
1 files changed, 34 insertions, 12 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 29770ea61768..0281d5e2cd67 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -1947,6 +1947,34 @@ void kcore_extract__delete(struct kcore_extract *kce)
}
#ifdef HAVE_GELF_GETNOTE_SUPPORT
+
+static void sdt_adjust_loc(struct sdt_note *tmp, GElf_Addr base_off)
+{
+ if (!base_off)
+ return;
+
+ if (tmp->bit32)
+ tmp->addr.a32[SDT_NOTE_IDX_LOC] =
+ tmp->addr.a32[SDT_NOTE_IDX_LOC] + base_off -
+ tmp->addr.a32[SDT_NOTE_IDX_BASE];
+ else
+ tmp->addr.a64[SDT_NOTE_IDX_LOC] =
+ tmp->addr.a64[SDT_NOTE_IDX_LOC] + base_off -
+ tmp->addr.a64[SDT_NOTE_IDX_BASE];
+}
+
+static void sdt_adjust_refctr(struct sdt_note *tmp, GElf_Addr base_addr,
+ GElf_Addr base_off)
+{
+ if (!base_off)
+ return;
+
+ if (tmp->bit32 && tmp->addr.a32[SDT_NOTE_IDX_REFCTR])
+ tmp->addr.a32[SDT_NOTE_IDX_REFCTR] -= (base_addr - base_off);
+ else if (tmp->addr.a64[SDT_NOTE_IDX_REFCTR])
+ tmp->addr.a64[SDT_NOTE_IDX_REFCTR] -= (base_addr - base_off);
+}
+
/**
* populate_sdt_note : Parse raw data and identify SDT note
* @elf: elf of the opened file
@@ -1964,7 +1992,6 @@ static int populate_sdt_note(Elf **elf, const char *data, size_t len,
const char *provider, *name, *args;
struct sdt_note *tmp = NULL;
GElf_Ehdr ehdr;
- GElf_Addr base_off = 0;
GElf_Shdr shdr;
int ret = -EINVAL;
@@ -2060,17 +2087,12 @@ static int populate_sdt_note(Elf **elf, const char *data, size_t len,
* base address in the description of the SDT note. If its different,
* then accordingly, adjust the note location.
*/
- if (elf_section_by_name(*elf, &ehdr, &shdr, SDT_BASE_SCN, NULL)) {
- base_off = shdr.sh_offset;
- if (base_off) {
- if (tmp->bit32)
- tmp->addr.a32[0] = tmp->addr.a32[0] + base_off -
- tmp->addr.a32[1];
- else
- tmp->addr.a64[0] = tmp->addr.a64[0] + base_off -
- tmp->addr.a64[1];
- }
- }
+ if (elf_section_by_name(*elf, &ehdr, &shdr, SDT_BASE_SCN, NULL))
+ sdt_adjust_loc(tmp, shdr.sh_offset);
+
+ /* Adjust reference counter offset */
+ if (elf_section_by_name(*elf, &ehdr, &shdr, SDT_PROBES_SCN, NULL))
+ sdt_adjust_refctr(tmp, shdr.sh_addr, shdr.sh_offset);
list_add_tail(&tmp->note_list, sdt_notes);
return 0;