3 files changed, 20 insertions, 43 deletions

diff --git a/tools/perf/Documentation/intel-pt.txt b/tools/perf/Documentation/intel-pt.txt
index 4a0501d7a3b4..c94c9de3173e 100644
--- a/tools/perf/Documentation/intel-pt.txt
+++ b/tools/perf/Documentation/intel-pt.txt
@@ -364,21 +364,6 @@ cyc_thresh	Specifies how frequently CYC packets are produced - see cyc
 
                 CYC packets are not requested by default.
 
-no_force_psb    This is a driver option and is not in the IA32_RTIT_CTL MSR.
-
-                It stops the driver resetting the byte count to zero whenever
-                enabling the trace (for example on context switches) which in
-                turn results in no PSB being forced.  However some processors
-                will produce a PSB anyway.
-
-                In any case, there is still a PSB when the trace is enabled for
-                the first time.
-
-                no_force_psb can be used to slightly decrease the trace size but
-                may make it harder for the decoder to recover from errors.
-
-                no_force_psb is not selected by default.
-
 
 new snapshot option
 -------------------
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index eb5f18b75402..c6f9af78f6f5 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -270,12 +270,13 @@ static int kernel_get_module_dso(const char *module, struct dso **pdso)
         int ret = 0;
 
         if (module) {
-                list_for_each_entry(dso, &host_machine->dsos.head, node) {
-                        if (!dso->kernel)
-                                continue;
-                        if (strncmp(dso->short_name + 1, module,
-                                    dso->short_name_len - 2) == 0)
-                                goto found;
+                char module_name[128];
+
+                snprintf(module_name, sizeof(module_name), "[%s]", module);
+                map = map_groups__find_by_name(&host_machine->kmaps, MAP__FUNCTION, module_name);
+                if (map) {
+                        dso = map->dso;
+                        goto found;
                 }
                 pr_debug("Failed to find module %s.\n", module);
                 return -ENOENT;
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index f78ea3dc4c08..475d88d0a1c9 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -1271,8 +1271,6 @@ out_close:
 static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
                        bool temp)
 {
-        GElf_Ehdr *ehdr;
-
         kcore->elfclass = elfclass;
 
         if (temp)
@@ -1289,9 +1287,7 @@ static int kcore__init(struct kcore *kcore, char *filename, int elfclass,
         if (!gelf_newehdr(kcore->elf, elfclass))
                 goto out_end;
 
-        ehdr = gelf_getehdr(kcore->elf, &kcore->ehdr);
-        if (!ehdr)
-                goto out_end;
+        memset(&kcore->ehdr, 0, sizeof(GElf_Ehdr));
 
         return 0;
 
@@ -1348,23 +1344,18 @@ static int kcore__copy_hdr(struct kcore *from, struct kcore *to, size_t count)
 static int kcore__add_phdr(struct kcore *kcore, int idx, off_t offset,
                            u64 addr, u64 len)
 {
-        GElf_Phdr gphdr;
-        GElf_Phdr *phdr;
-
-        phdr = gelf_getphdr(kcore->elf, idx, &gphdr);
-        if (!phdr)
-                return -1;
-
-        phdr->p_type    = PT_LOAD;
-        phdr->p_flags   = PF_R | PF_W | PF_X;
-        phdr->p_offset  = offset;
-        phdr->p_vaddr   = addr;
-        phdr->p_paddr   = 0;
-        phdr->p_filesz  = len;
-        phdr->p_memsz   = len;
-        phdr->p_align   = page_size;
-
-        if (!gelf_update_phdr(kcore->elf, idx, phdr))
+        GElf_Phdr phdr = {
+                .p_type         = PT_LOAD,
+                .p_flags        = PF_R | PF_W | PF_X,
+                .p_offset       = offset,
+                .p_vaddr        = addr,
+                .p_paddr        = 0,
+                .p_filesz       = len,
+                .p_memsz        = len,
+                .p_align        = page_size,
+        };
+
+        if (!gelf_update_phdr(kcore->elf, idx, &phdr))
                 return -1;
 
         return 0;