Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates/fixes from Ingo Molnar:
 "Mostly tooling updates, but also two kernel fixes: a call chain
  handling robustness fix and an x86 PMU driver event definition fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/callchain: Force USER_DS when invoking perf_callchain_user()
  tools build: Fixup sched_getcpu feature test
  perf tests kmod-path: Don't fail if compressed modules aren't supported
  perf annotate: Fix AArch64 comment char
  perf tools: Fix spelling mistakes
  perf/x86: Fix Broadwell-EP DRAM RAPL events
  perf config: Refactor a duplicated code for obtaining config file name
  perf symbols: Allow user probes on versioned symbols
  perf symbols: Accept symbols starting at address 0
  tools lib string: Adopt prefixcmp() from perf and subcmd
  perf units: Move parse_tag_value() to units.[ch]
  perf ui gtk: Move gtk .so name to the only place where it is used
  perf tools: Move HAS_BOOL define to where perl headers are used
  perf memswap: Split the byteswap memory range wrappers from util.[ch]
  perf tools: Move event prototypes from util.h to event.h
  perf buildid: Move prototypes from util.h to build-id.h

2 files changed, 13 insertions, 1 deletions

diff --git a/tools/perf/arch/arm64/annotate/instructions.c b/tools/perf/arch/arm64/annotate/instructions.c
index 44eafd6f2d50..8f1908756cb6 100644
--- a/tools/perf/arch/arm64/annotate/instructions.c
+++ b/tools/perf/arch/arm64/annotate/instructions.c
@@ -50,7 +50,7 @@ static int arm64__annotate_init(struct arch *arch)
 	arch->initialized = true;
 	arch->priv	  = arm;
 	arch->associate_instruction_ops   = arm64__associate_instruction_ops;
-	arch->objdump.comment_char	  = ';';
+	arch->objdump.comment_char	  = '/';
 	arch->objdump.skip_functions_char = '+';
 	return 0;
 
diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/powerpc/util/sym-handling.c
index 39dbe512b9fc..bf9a2594572c 100644
--- a/tools/perf/arch/powerpc/util/sym-handling.c
+++ b/tools/perf/arch/powerpc/util/sym-handling.c
@@ -52,6 +52,18 @@ int arch__compare_symbol_names(const char *namea, const char *nameb)
 
 	return strcmp(namea, nameb);
 }
+
+int arch__compare_symbol_names_n(const char *namea, const char *nameb,
+				 unsigned int n)
+{
+	/* Skip over initial dot */
+	if (*namea == '.')
+		namea++;
+	if (*nameb == '.')
+		nameb++;
+
+	return strncmp(namea, nameb, n);
+}
 #endif
 
 #if defined(_CALL_ELF) && _CALL_ELF == 2