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| author | Adrian Hunter <adrian.hunter@intel.com> | 2018-05-22 13:54:40 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-05-23 10:26:41 -0300 |
| commit | c9dd1d894958b81a329ec01e7dd03b92eca52789 (patch) | |
| tree | 3e3a525a6579c3cb9b5ba7330c9ca89903cd6596 /tools | |
| parent | 6e97957d3d30552c415292bb08a0e5f3c459c027 (diff) | |
| download | linux-0-day-c9dd1d894958b81a329ec01e7dd03b92eca52789.tar.gz linux-0-day-c9dd1d894958b81a329ec01e7dd03b92eca52789.tar.xz | |
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 <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1526986485-6562-13-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -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 4e7b71e8ac0e7..4aec12102e19b 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; |