Patch "perf symbol: Pass is_kallsyms to symbols__fixup_end()" has been added to the 5.15-stable tree

This is a note to let you know that I've just added the patch titled

perf symbol: Pass is_kallsyms to symbols__fixup_end()

to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
perf-symbol-pass-is_kallsyms-to-symbols__fixup_end.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From 838425f2defe5262906b698752d28fd2fca1aac2 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <[email protected]>
Date: Fri, 15 Apr 2022 17:40:46 -0700
Subject: perf symbol: Pass is_kallsyms to symbols__fixup_end()

From: Namhyung Kim <[email protected]>

commit 838425f2defe5262906b698752d28fd2fca1aac2 upstream.

The symbol fixup is necessary for symbols in kallsyms since they don't have size info. So we use the next symbol's address to calculate the size. Now it's also used for user binaries because sometimes they miss size for hand-written asm functions.

There's a arch-specific function to handle kallsyms differently but currently it cannot distinguish kallsyms from others. Pass this information explicitly to handle it properly. Note that those arch functions will be moved to the generic function so I didn't added it to the arch-functions.

---
 tools/perf/util/symbol-elf.c |    2 +-
 tools/perf/util/symbol.c     |    7 ++++---
 tools/perf/util/symbol.h     |    2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

@@ -1290,7 +1290,7 @@ dso__load_sym_internal(struct dso *dso,
 	 * For misannotated, zeroed, ASM function sizes.
 	 */
 	if (nr > 0) {
-		symbols__fixup_end(&dso->symbols);
+		symbols__fixup_end(&dso->symbols, false);
 		symbols__fixup_duplicate(&dso->symbols);
 		if (kmap) {
 			/*

@@ -217,7 +217,8 @@ again:
 	}
 }
 
-void symbols__fixup_end(struct rb_root_cached *symbols)
+void symbols__fixup_end(struct rb_root_cached *symbols,
+			bool is_kallsyms __maybe_unused)
 {
 	struct rb_node *nd, *prevnd = rb_first_cached(symbols);
 	struct symbol *curr, *prev;

@@ -1456,7 +1457,7 @@ int __dso__load_kallsyms(struct dso *dso
 	if (kallsyms__delta(kmap, filename, &delta))
 		return -1;
 
-	symbols__fixup_end(&dso->symbols);
+	symbols__fixup_end(&dso->symbols, true);
 	symbols__fixup_duplicate(&dso->symbols);
 
 	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)

@@ -1648,7 +1649,7 @@ int dso__load_bfd_symbols(struct dso *ds
 #undef bfd_asymbol_section
 #endif
 
-	symbols__fixup_end(&dso->symbols);
+	symbols__fixup_end(&dso->symbols, false);
 	symbols__fixup_duplicate(&dso->symbols);
 	dso->adjust_symbols = 1;
 

@@ -192,7 +192,7 @@ void __symbols__insert(struct rb_root_ca
 		       bool kernel);
 void symbols__insert(struct rb_root_cached *symbols, struct symbol *sym);
 void symbols__fixup_duplicate(struct rb_root_cached *symbols);
-void symbols__fixup_end(struct rb_root_cached *symbols);
+void symbols__fixup_end(struct rb_root_cached *symbols, bool is_kallsyms);
 void maps__fixup_end(struct maps *maps);
 
 typedef int (*mapfn_t)(u64 start, u64 len, u64 pgoff, void *data);

Patches currently in stable-queue which might be from [email protected] are

queue-5.15/perf-arm-spe-fix-addresses-of-synthesized-spe-events.patch queue-5.15/perf-symbol-update-symbols__fixup_end.patch queue-5.15/perf-symbol-pass-is_kallsyms-to-symbols__fixup_end.patch