Merge tag 'perf-tools-for-v6.18-1-2025-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tools updates from Arnaldo Carvalho de Melo:

 - Extended 'perf annotate' with DWARF type information
   (--code-with-type) integration in the TUI, including a 'T'
   hotkey to toggle it

 - Enhanced 'perf bench mem' with new mmap() workloads and control
   over page/chunk sizes

 - Fix 'perf stat' error handling to correctly display unsupported
   events

 - Improved support for Clang cross-compilation

 - Refactored LLVM and Capstone disasm for modularity

 - Introduced the :X modifier to exclude an event from automatic
   regrouping

 - Adjusted KVM sampling defaults to use the "cycles" event to prevent
   failures

 - Added comprehensive support for decoding PowerPC Dispatch Trace Log
   (DTL)

 - Updated Arm SPE tracing logic for better analysis of memory and snoop
   details

 - Synchronized Intel PMU events and metrics with TMA 5.1 across
   multiple processor generations

 - Converted dependencies like libperl and libtracefs to be opt-in

 - Handle more Rust symbols in kallsyms ('N', debugging)

 - Improve the python binding to allow for python based tools to use
   more of the libraries, add a 'ilist' utility to test those new
   bindings

 - Various 'perf test' fixes

 - Kan Liang no longer a perf tools reviewer

* tag 'perf-tools-for-v6.18-1-2025-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (192 commits)
  perf tools: Fix arm64 libjvmti build by generating unistd_64.h
  perf tests: Don't retest sections in "Object code reading"
  perf docs: Document building with Clang
  perf build: Support build with clang
  perf test coresight: Dismiss clang warning for unroll loop thread
  perf test coresight: Dismiss clang warning for thread loop
  perf test coresight: Dismiss clang warning for memcpy thread
  perf build: Disable thread safety analysis for perl header
  perf build: Correct CROSS_ARCH for clang
  perf python: split Clang options when invoking Popen
  tools build: Align warning options with perf
  perf disasm: Remove unused evsel from 'struct annotate_args'
  perf srcline: Fallback between addr2line implementations
  perf disasm: Make ins__scnprintf() and ins__is_nop() static
  perf dso: Clean up read_symbol() error handling
  perf dso: Support BPF programs in dso__read_symbol()
  perf dso: Move read_symbol() from llvm/capstone to dso
  perf llvm: Reduce LLVM initialization
  perf check: Add libLLVM feature
  perf parse-events: Fix parsing of >30kb event strings
  ...

1 files changed, 12 insertions, 3 deletions

diff --git a/tools/perf/util/annotate-data.c b/tools/perf/util/annotate-data.c
index 1ef2edbc71d9..903027a6fb7d 100644
--- a/tools/perf/util/annotate-data.c
+++ b/tools/perf/util/annotate-data.c
@@ -58,7 +58,7 @@ void pr_debug_type_name(Dwarf_Die *die, enum type_state_kind kind)
 	case TSR_KIND_CONST:
 		pr_info(" constant\n");
 		return;
-	case TSR_KIND_POINTER:
+	case TSR_KIND_PERCPU_POINTER:
 		pr_info(" pointer");
 		/* it also prints the type info */
 		break;
@@ -591,7 +591,7 @@ void set_stack_state(struct type_state_stack *stack, int offset, u8 kind,
 	switch (tag) {
 	case DW_TAG_structure_type:
 	case DW_TAG_union_type:
-		stack->compound = (kind != TSR_KIND_POINTER);
+		stack->compound = (kind != TSR_KIND_PERCPU_POINTER);
 		break;
 	default:
 		stack->compound = false;
@@ -868,6 +868,11 @@ static void update_var_state(struct type_state *state, struct data_loc_info *dlo
 			int offset = var->offset;
 			struct type_state_stack *stack;
 
+			/* If the reg location holds the pointer value, dereference the type */
+			if (!var->is_reg_var_addr && is_pointer_type(&mem_die) &&
+				__die_get_real_type(&mem_die, &mem_die) == NULL)
+				continue;
+
 			if (var->reg != DWARF_REG_FB)
 				offset -= fb_offset;
 
@@ -893,6 +898,10 @@ static void update_var_state(struct type_state *state, struct data_loc_info *dlo
 
 			reg = &state->regs[var->reg];
 
+			/* For gp registers, skip the address registers for now */
+			if (var->is_reg_var_addr)
+				continue;
+
 			if (reg->ok && reg->kind == TSR_KIND_TYPE &&
 			    !is_better_type(&reg->type, &mem_die))
 				continue;
@@ -1107,7 +1116,7 @@ again:
 		return PERF_TMR_OK;
 	}
 
-	if (state->regs[reg].kind == TSR_KIND_POINTER) {
+	if (state->regs[reg].kind == TSR_KIND_PERCPU_POINTER) {
 		pr_debug_dtp("percpu ptr");
 
 		/*