treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 125 insertions, 0 deletions

diff --git a/tools/perf/util/mutex.c b/tools/perf/util/mutex.c
new file mode 100644
index 000000000..7aa1f3f55
--- /dev/null
+++ b/tools/perf/util/mutex.c
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "mutex.h"
+
+#include "debug.h"
+#include <linux/string.h>
+#include <errno.h>
+
+static void check_err(const char *fn, int err)
+{
+	char sbuf[STRERR_BUFSIZE];
+
+	if (err == 0)
+		return;
+
+	pr_err("%s error: '%s'\n", fn, str_error_r(err, sbuf, sizeof(sbuf)));
+}
+
+#define CHECK_ERR(err) check_err(__func__, err)
+
+static void __mutex_init(struct mutex *mtx, bool pshared, bool recursive)
+{
+	pthread_mutexattr_t attr;
+
+	CHECK_ERR(pthread_mutexattr_init(&attr));
+
+#ifndef NDEBUG
+	/* In normal builds enable error checking, such as recursive usage. */
+	CHECK_ERR(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK));
+#endif
+	if (recursive)
+		CHECK_ERR(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE));
+	if (pshared)
+		CHECK_ERR(pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED));
+	CHECK_ERR(pthread_mutex_init(&mtx->lock, &attr));
+	CHECK_ERR(pthread_mutexattr_destroy(&attr));
+}
+
+void mutex_init(struct mutex *mtx)
+{
+	__mutex_init(mtx, /*pshared=*/false, /*recursive=*/false);
+}
+
+void mutex_init_pshared(struct mutex *mtx)
+{
+	__mutex_init(mtx, /*pshared=*/true, /*recursive=*/false);
+}
+
+void mutex_init_recursive(struct mutex *mtx)
+{
+	__mutex_init(mtx, /*pshared=*/false, /*recursive=*/true);
+}
+
+void mutex_destroy(struct mutex *mtx)
+{
+	CHECK_ERR(pthread_mutex_destroy(&mtx->lock));
+}
+
+void mutex_lock(struct mutex *mtx)
+	NO_THREAD_SAFETY_ANALYSIS
+{
+	CHECK_ERR(pthread_mutex_lock(&mtx->lock));
+}
+
+void mutex_unlock(struct mutex *mtx)
+	NO_THREAD_SAFETY_ANALYSIS
+{
+	CHECK_ERR(pthread_mutex_unlock(&mtx->lock));
+}
+
+bool mutex_trylock(struct mutex *mtx)
+{
+	int ret = pthread_mutex_trylock(&mtx->lock);
+
+	if (ret == 0)
+		return true; /* Lock acquired. */
+
+	if (ret == EBUSY)
+		return false; /* Lock busy. */
+
+	/* Print error. */
+	CHECK_ERR(ret);
+	return false;
+}
+
+static void __cond_init(struct cond *cnd, bool pshared)
+{
+	pthread_condattr_t attr;
+
+	CHECK_ERR(pthread_condattr_init(&attr));
+	if (pshared)
+		CHECK_ERR(pthread_condattr_setpshared(&attr, PTHREAD_PROCESS_SHARED));
+
+	CHECK_ERR(pthread_cond_init(&cnd->cond, &attr));
+	CHECK_ERR(pthread_condattr_destroy(&attr));
+}
+
+void cond_init(struct cond *cnd)
+{
+	__cond_init(cnd, /*pshared=*/false);
+}
+
+void cond_init_pshared(struct cond *cnd)
+{
+	__cond_init(cnd, /*pshared=*/true);
+}
+
+void cond_destroy(struct cond *cnd)
+{
+	CHECK_ERR(pthread_cond_destroy(&cnd->cond));
+}
+
+void cond_wait(struct cond *cnd, struct mutex *mtx)
+{
+	CHECK_ERR(pthread_cond_wait(&cnd->cond, &mtx->lock));
+}
+
+void cond_signal(struct cond *cnd)
+{
+	CHECK_ERR(pthread_cond_signal(&cnd->cond));
+}
+
+void cond_broadcast(struct cond *cnd)
+{
+	CHECK_ERR(pthread_cond_broadcast(&cnd->cond));
+}