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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /arch/arm/mach-omap2/pm-debug.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
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>
Diffstat (limited to 'arch/arm/mach-omap2/pm-debug.c')
-rw-r--r--arch/arm/mach-omap2/pm-debug.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
new file mode 100644
index 000000000..b43eab987
--- /dev/null
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * OMAP Power Management debug routines
+ *
+ * Copyright (C) 2005 Texas Instruments, Inc.
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * Written by:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Tony Lindgren
+ * Juha Yrjola
+ * Amit Kucheria <amit.kucheria@nokia.com>
+ * Igor Stoppa <igor.stoppa@nokia.com>
+ * Jouni Hogander
+ *
+ * Based on pm.c for omap2
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/sched/clock.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "clock.h"
+#include "powerdomain.h"
+#include "clockdomain.h"
+
+#include "soc.h"
+#include "cm2xxx_3xxx.h"
+#include "prm2xxx_3xxx.h"
+#include "pm.h"
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static int pm_dbg_init_done;
+
+static int pm_dbg_init(void);
+
+static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
+ "OFF",
+ "RET",
+ "INA",
+ "ON"
+};
+
+void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
+{
+ s64 t;
+
+ if (!pm_dbg_init_done)
+ return ;
+
+ /* Update timer for previous state */
+ t = sched_clock();
+
+ pwrdm->state_timer[prev] += t - pwrdm->timer;
+
+ pwrdm->timer = t;
+}
+
+static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
+{
+ struct seq_file *s = (struct seq_file *)user;
+
+ if (strcmp(clkdm->name, "emu_clkdm") == 0 ||
+ strcmp(clkdm->name, "wkup_clkdm") == 0 ||
+ strncmp(clkdm->name, "dpll", 4) == 0)
+ return 0;
+
+ seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name,
+ clkdm->usecount);
+
+ return 0;
+}
+
+static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
+{
+ struct seq_file *s = (struct seq_file *)user;
+ int i;
+
+ if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
+ strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
+ strncmp(pwrdm->name, "dpll", 4) == 0)
+ return 0;
+
+ if (pwrdm->state != pwrdm_read_pwrst(pwrdm))
+ printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n",
+ pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm));
+
+ seq_printf(s, "%s (%s)", pwrdm->name,
+ pwrdm_state_names[pwrdm->state]);
+ for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
+ seq_printf(s, ",%s:%d", pwrdm_state_names[i],
+ pwrdm->state_counter[i]);
+
+ seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
+ for (i = 0; i < pwrdm->banks; i++)
+ seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
+ pwrdm->ret_mem_off_counter[i]);
+
+ seq_putc(s, '\n');
+ return 0;
+}
+
+static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user)
+{
+ struct seq_file *s = (struct seq_file *)user;
+ int i;
+
+ if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
+ strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
+ strncmp(pwrdm->name, "dpll", 4) == 0)
+ return 0;
+
+ pwrdm_state_switch(pwrdm);
+
+ seq_printf(s, "%s (%s)", pwrdm->name,
+ pwrdm_state_names[pwrdm->state]);
+
+ for (i = 0; i < 4; i++)
+ seq_printf(s, ",%s:%lld", pwrdm_state_names[i],
+ pwrdm->state_timer[i]);
+
+ seq_putc(s, '\n');
+ return 0;
+}
+
+static int pm_dbg_counters_show(struct seq_file *s, void *unused)
+{
+ pwrdm_for_each(pwrdm_dbg_show_counter, s);
+ clkdm_for_each(clkdm_dbg_show_counter, s);
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(pm_dbg_counters);
+
+static int pm_dbg_timers_show(struct seq_file *s, void *unused)
+{
+ pwrdm_for_each(pwrdm_dbg_show_timer, s);
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(pm_dbg_timers);
+
+static int pwrdm_suspend_get(void *data, u64 *val)
+{
+ int ret = -EINVAL;
+
+ if (cpu_is_omap34xx())
+ ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
+ *val = ret;
+
+ if (ret >= 0)
+ return 0;
+ return *val;
+}
+
+static int pwrdm_suspend_set(void *data, u64 val)
+{
+ if (cpu_is_omap34xx())
+ return omap3_pm_set_suspend_state(
+ (struct powerdomain *)data, (int)val);
+ return -EINVAL;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
+ pwrdm_suspend_set, "%llu\n");
+
+static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
+{
+ int i;
+ s64 t;
+ struct dentry *d;
+
+ t = sched_clock();
+
+ for (i = 0; i < 4; i++)
+ pwrdm->state_timer[i] = 0;
+
+ pwrdm->timer = t;
+
+ if (strncmp(pwrdm->name, "dpll", 4) == 0)
+ return 0;
+
+ d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
+ debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, pwrdm,
+ &pwrdm_suspend_fops);
+
+ return 0;
+}
+
+static int option_get(void *data, u64 *val)
+{
+ u32 *option = data;
+
+ *val = *option;
+
+ return 0;
+}
+
+static int option_set(void *data, u64 val)
+{
+ u32 *option = data;
+
+ *option = val;
+
+ if (option == &enable_off_mode) {
+ if (cpu_is_omap34xx())
+ omap3_pm_off_mode_enable(val);
+ }
+
+ return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
+
+static int __init pm_dbg_init(void)
+{
+ struct dentry *d;
+
+ if (pm_dbg_init_done)
+ return 0;
+
+ d = debugfs_create_dir("pm_debug", NULL);
+
+ debugfs_create_file("count", 0444, d, NULL, &pm_dbg_counters_fops);
+ debugfs_create_file("time", 0444, d, NULL, &pm_dbg_timers_fops);
+
+ pwrdm_for_each(pwrdms_setup, (void *)d);
+
+ debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
+ &enable_off_mode, &pm_dbg_option_fops);
+ pm_dbg_init_done = 1;
+
+ return 0;
+}
+omap_arch_initcall(pm_dbg_init);
+
+#endif