diff options
author | Adrian Hunter <[email protected]> | 2018-05-22 13:54:40 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <[email protected]> | 2018-05-23 10:26:41 -0300 |
commit | c9dd1d894958b81a329ec01e7dd03b92eca52789 (patch) | |
tree | 3e3a525a6579c3cb9b5ba7330c9ca89903cd6596 | |
parent | 6e97957d3d30552c415292bb08a0e5f3c459c027 (diff) |
perf kcore_copy: Calculate offset from phnum
In preparation to add more program headers, calculate offset from the
number of phdrs.
Signed-off-by: Adrian Hunter <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
-rw-r--r-- | tools/perf/util/symbol-elf.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 4e7b71e8ac0e..4aec12102e19 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -1682,7 +1682,7 @@ int kcore_copy(const char *from_dir, const char *to_dir) struct kcore kcore; struct kcore extract; int idx = 0, err = -1; - off_t offset = page_size, sz, modules_offset = 0; + off_t offset, sz, modules_offset = 0; struct kcore_copy_info kci = { .stext = 0, }; char kcore_filename[PATH_MAX]; char extract_filename[PATH_MAX]; @@ -1710,6 +1710,10 @@ int kcore_copy(const char *from_dir, const char *to_dir) if (kcore__copy_hdr(&kcore, &extract, kci.phnum)) goto out_extract_close; + offset = gelf_fsize(extract.elf, ELF_T_EHDR, 1, EV_CURRENT) + + gelf_fsize(extract.elf, ELF_T_PHDR, kci.phnum, EV_CURRENT); + offset = round_up(offset, page_size); + if (kcore__add_phdr(&extract, idx++, offset, kci.kernel_map.addr, kci.kernel_map.len)) goto out_extract_close; |