Commit-ID: f6838209484d5cfb368ca5c61d150cc4054eef59 Gitweb: https://git.kernel.org/tip/f6838209484d5cfb368ca5c61d150cc4054eef59 Author: Adrian Hunter <adrian.hun...@intel.com> AuthorDate: Tue, 22 May 2018 13:54:38 +0300 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Wed, 23 May 2018 10:26:40 -0300
perf kcore_copy: Keep phdr data in a list Currently, kcore_copy makes 2 program headers, one for the kernel text (namely kernel_map) and one for the modules (namely modules_map). Now more program headers are needed, but treating each program header as a special case results in much more code. Instead, in preparation to add more program headers, change to keep program header data (phdr_data) in a list. Signed-off-by: Adrian Hunter <adrian.hun...@intel.com> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Andi Kleen <a...@linux.intel.com> Cc: Andy Lutomirski <l...@kernel.org> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Joerg Roedel <j...@8bytes.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: x...@kernel.org Link: http://lkml.kernel.org/r/1526986485-6562-11-git-send-email-adrian.hun...@intel.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/symbol-elf.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 48943b834f11..b13873a6f368 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -1388,6 +1388,7 @@ struct phdr_data { off_t offset; u64 addr; u64 len; + struct list_head node; }; struct kcore_copy_info { @@ -1399,6 +1400,7 @@ struct kcore_copy_info { u64 last_module_symbol; struct phdr_data kernel_map; struct phdr_data modules_map; + struct list_head phdrs; }; static int kcore_copy__process_kallsyms(void *arg, const char *name, char type, @@ -1510,6 +1512,11 @@ static int kcore_copy__read_maps(struct kcore_copy_info *kci, Elf *elf) if (elf_read_maps(elf, true, kcore_copy__read_map, kci) < 0) return -1; + if (kci->kernel_map.len) + list_add_tail(&kci->kernel_map.node, &kci->phdrs); + if (kci->modules_map.len) + list_add_tail(&kci->modules_map.node, &kci->phdrs); + return 0; } @@ -1678,6 +1685,8 @@ int kcore_copy(const char *from_dir, const char *to_dir) char kcore_filename[PATH_MAX]; char extract_filename[PATH_MAX]; + INIT_LIST_HEAD(&kci.phdrs); + if (kcore_copy__copy_file(from_dir, to_dir, "kallsyms")) return -1;
