perf: Fix build with gcc-13

Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 70 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/files/0001-perf-cpumap-Make-counter-as-unsigned-ints.patch b/meta/recipes-kernel/linux/files/0001-perf-cpumap-Make-counter-as-unsigned-ints.patch
new file mode 100644
index 0000000000..2bfc40fe04
--- /dev/null
+++ b/meta/recipes-kernel/linux/files/0001-perf-cpumap-Make-counter-as-unsigned-ints.patch
@@ -0,0 +1,69 @@
+From d14450f9e0f05ea7177c5404a7a9289352caab77 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 23 Jan 2023 13:04:10 -0800
+Subject: [PATCH] perf cpumap: Make counter as unsigned ints
+
+These are loop counters which is inherently unsigned. Therefore make
+them unsigned. Moreover it also fixes alloc-size-larger-than
+error with gcc-13, where malloc can be called with (-1) due to tmp_len
+being an int type.
+
+Fixes
+| cpumap.c:366:20: error: argument 1 range [18446744065119617024, 18446744073709551612] exceeds maximum object size 9223372036854775807 [-Werror=alloc-size-larger-than=]
+|   366 |         tmp_cpus = malloc(tmp_len * sizeof(struct perf_cpu));
+|       |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
+Cc: Mark Rutland <mark.rutland@arm.com>
+Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+Cc: Jiri Olsa <jolsa@kernel.org>
+Cc: Namhyung Kim <namhyung@kernel.org>
+
+Upstream-Status: Submitted [https://lore.kernel.org/linux-perf-users/20230123211310.127532-1-raj.khem@gmail.com/T/#u]
+---
+ tools/lib/perf/cpumap.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/tools/lib/perf/cpumap.c b/tools/lib/perf/cpumap.c
+index 6cd0be7c1bb4..d960880dd903 100644
+--- a/tools/lib/perf/cpumap.c
++++ b/tools/lib/perf/cpumap.c
+@@ -351,8 +351,8 @@ struct perf_cpu_map *perf_cpu_map__merge(struct perf_cpu_map *orig,
+ 					 struct perf_cpu_map *other)
+ {
+ 	struct perf_cpu *tmp_cpus;
+-	int tmp_len;
+-	int i, j, k;
++	unsigned int tmp_len;
++	unsigned int i, j, k;
+ 	struct perf_cpu_map *merged;
+ 
+ 	if (perf_cpu_map__is_subset(orig, other))
+@@ -369,7 +369,7 @@ struct perf_cpu_map *perf_cpu_map__merge(struct perf_cpu_map *orig,
+ 
+ 	/* Standard merge algorithm from wikipedia */
+ 	i = j = k = 0;
+-	while (i < orig->nr && j < other->nr) {
++	while (i < (unsigned int)orig->nr && j < (unsigned int)other->nr) {
+ 		if (orig->map[i].cpu <= other->map[j].cpu) {
+ 			if (orig->map[i].cpu == other->map[j].cpu)
+ 				j++;
+@@ -378,10 +378,10 @@ struct perf_cpu_map *perf_cpu_map__merge(struct perf_cpu_map *orig,
+ 			tmp_cpus[k++] = other->map[j++];
+ 	}
+ 
+-	while (i < orig->nr)
++	while (i < (unsigned int)orig->nr)
+ 		tmp_cpus[k++] = orig->map[i++];
+ 
+-	while (j < other->nr)
++	while (j < (unsigned int)other->nr)
+ 		tmp_cpus[k++] = other->map[j++];
+ 	assert(k <= tmp_len);
+ 
+-- 
+2.39.1
+
diff --git a/meta/recipes-kernel/linux/linux-yocto_6.1.bb b/meta/recipes-kernel/linux/linux-yocto_6.1.bb
index 36f7ed8791..bf172eb38e 100644
--- a/meta/recipes-kernel/linux/linux-yocto_6.1.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_6.1.bb
@@ -41,6 +41,7 @@ KBRANCH:class-devupstream = "v6.1/base"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;name=machine;branch=${KBRANCH};protocol=https \
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-6.1;destsuffix=${KMETA};protocol=https"
+SRC_URI += "file://0001-perf-cpumap-Make-counter-as-unsigned-ints.patch"
 
 LIC_FILES_CHKSUM = "file://COPYING;md5=6bc538ed5bd9a7fc9398086aedcd7e46"
 LINUX_VERSION ?= "6.1.25"