[RFC PATCH 3/3] x86, acpi: Mark __init strings as such

From: Mathias Krause
Date: Sun Jun 22 2014 - 18:47:37 EST

Make use of the pi_<level>() helpers to mark the strings printed during
initialization for automatic release. Do so for the strings used in
command line parsing as well, by using the __init_str() macro.

Also convert the remaining printk() calls to their pr_<level> /
pi_<level> counterparts.

This moves ~1.7 kB from the .rodata section to .init.rodata.

Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx>
---

Should the checkpatch warnings be handled, too, e.g. removing the line
breaks for strings?:

WARNING: quoted string split across lines
#421: FILE: arch/x86/kernel/acpi/boot.c:1263:
+ pi_notice("Warning: DMI blacklist says broken, but acpi "
+ "forced\n");

I'd rather not remove the braces as it's IMHO more readable and more
consistent with the coding style with them, as this is just the start
of a huge if-else-if-.. block:

WARNING: braces {} are not necessary for single statement blocks
#453: FILE: arch/x86/kernel/acpi/boot.c:1520:
+ if (strcmp(arg, _("off")) == 0) {
disable_acpi();
}

arch/x86/kernel/acpi/boot.c | 162 ++++++++++++++++++++-----------------------
1 file changed, 74 insertions(+), 88 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 86281ffb96..dc7d8b1f54 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -23,6 +23,8 @@
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/

+#define pr_fmt(fmt) "ACPI: " fmt
+
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/acpi_pmtmr.h>
@@ -53,7 +55,7 @@ EXPORT_SYMBOL(acpi_disabled);
# include <asm/proto.h>
#endif /* X86 */

-#define PREFIX "ACPI: "
+#define _(x) __init_str(x)

int acpi_noirq; /* skip ACPI IRQ initialization */
int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
@@ -167,15 +169,14 @@ static int __init acpi_parse_madt(struct acpi_table_header *table)

madt = (struct acpi_table_madt *)table;
if (!madt) {
- printk(KERN_WARNING PREFIX "Unable to map MADT\n");
+ pi_warn("Unable to map MADT\n");
return -ENODEV;
}

if (madt->address) {
acpi_lapic_addr = (u64) madt->address;

- printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
- madt->address);
+ pi_debug("Local APIC address 0x%08x\n", madt->address);
}

default_acpi_madt_oem_check(madt->header.oem_id,
@@ -196,7 +197,7 @@ static int acpi_register_lapic(int id, u8 enabled)
unsigned int ver = 0;

if (id >= MAX_LOCAL_APIC) {
- printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
+ pr_info("skipped apicid that is too big\n");
return -EINVAL;
}

@@ -236,11 +237,11 @@ acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
* when we use CPU hotplug.
*/
if (!apic->apic_id_valid(apic_id) && enabled)
- printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
+ pi_warn("x2apic entry ignored\n");
else
acpi_register_lapic(apic_id, enabled);
#else
- printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
+ pi_warn("x2apic entry ignored\n");
#endif

return 0;
@@ -319,7 +320,7 @@ acpi_parse_x2apic_nmi(struct acpi_subtable_header *header,
acpi_table_print_madt_entry(header);

if (x2apic_nmi->lint != 1)
- printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
+ pi_warn("NMI not connected to LINT 1!\n");

return 0;
}
@@ -337,7 +338,7 @@ acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long e
acpi_table_print_madt_entry(header);

if (lapic_nmi->lint != 1)
- printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
+ pi_warn("NMI not connected to LINT 1!\n");

return 0;
}
@@ -420,14 +421,14 @@ acpi_parse_int_src_ovr(struct acpi_subtable_header * header,

if (intsrc->source_irq == 0) {
if (acpi_skip_timer_override) {
- printk(PREFIX "BIOS IRQ0 override ignored.\n");
+ pi_info("BIOS IRQ0 override ignored.\n");
return 0;
}

if ((intsrc->global_irq == 2) && acpi_fix_pin2_polarity
&& (intsrc->inti_flags & ACPI_MADT_POLARITY_MASK)) {
intsrc->inti_flags &= ~ACPI_MADT_POLARITY_MASK;
- printk(PREFIX "BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
+ pi_info("BIOS IRQ0 pin2 override: forcing polarity to high active.\n");
}
}

@@ -503,7 +504,7 @@ void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
if (old == new)
return;

- printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
+ pi_info("setting ELCR to %04x (from %04x)\n", new, old);
outb(new, 0x4d0);
outb(new >> 8, 0x4d1);
}
@@ -622,7 +623,7 @@ static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu)

cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
if (cpu < 0) {
- pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
+ pr_info("Unable to map lapic to logical cpu number\n");
return cpu;
}

@@ -678,7 +679,7 @@ static int __init acpi_parse_sbf(struct acpi_table_header *table)

sb = (struct acpi_table_boot *)table;
if (!sb) {
- printk(KERN_WARNING PREFIX "Unable to map SBF\n");
+ pi_warn("Unable to map SBF\n");
return -ENODEV;
}

@@ -698,13 +699,12 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)

hpet_tbl = (struct acpi_table_hpet *)table;
if (!hpet_tbl) {
- printk(KERN_WARNING PREFIX "Unable to map HPET\n");
+ pi_warn("Unable to map HPET\n");
return -ENODEV;
}

if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
- printk(KERN_WARNING PREFIX "HPET timers must be located in "
- "memory.\n");
+ pi_warn("HPET timers must be located in memory.\n");
return -1;
}

@@ -716,9 +716,8 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
* want to allocate a resource there.
*/
if (!hpet_address) {
- printk(KERN_WARNING PREFIX
- "HPET id: %#x base: %#lx is invalid\n",
- hpet_tbl->id, hpet_address);
+ pi_warn("HPET id: %#x base: %#lx is invalid\n", hpet_tbl->id,
+ hpet_address);
return 0;
}
#ifdef CONFIG_X86_64
@@ -729,21 +728,19 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)
*/
if (hpet_address == 0xfed0000000000000UL) {
if (!hpet_force_user) {
- printk(KERN_WARNING PREFIX "HPET id: %#x "
- "base: 0xfed0000000000000 is bogus\n "
- "try hpet=force on the kernel command line to "
- "fix it up to 0xfed00000.\n", hpet_tbl->id);
+ pi_warn("HPET id: %#x base: %#lx is bogus\n",
+ hpet_tbl->id, 0xfed0000000000000UL);
+ pi_cont("try hpet=force on the kernel command line "
+ "to fix it up to 0xfed00000.\n"),
hpet_address = 0;
return 0;
}
- printk(KERN_WARNING PREFIX
- "HPET id: %#x base: 0xfed0000000000000 fixed up "
- "to 0xfed00000.\n", hpet_tbl->id);
+ pi_warn("HPET id: %#x base: %#lx fixed up to 0xfed00000.\n",
+ hpet_tbl->id, 0xfed0000000000000UL);
hpet_address >>= 32;
}
#endif
- printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
- hpet_tbl->id, hpet_address);
+ pi_info("HPET id: %#x base: %#lx\n", hpet_tbl->id, hpet_address);

/*
* Allocate and initialize the HPET firmware resource for adding into
@@ -754,7 +751,7 @@ static int __init acpi_parse_hpet(struct acpi_table_header *table)

hpet_res->name = (void *)&hpet_res[1];
hpet_res->flags = IORESOURCE_MEM;
- snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
+ snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, _("HPET %u"),
hpet_tbl->sequence);

hpet_res->start = hpet_address;
@@ -805,8 +802,7 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
}
if (pmtmr_ioport)
- printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
- pmtmr_ioport);
+ pi_info("PM-Timer IO Port: %#x\n", pmtmr_ioport);
#endif
return 0;
}
@@ -833,8 +829,7 @@ static int __init early_acpi_parse_madt_lapic_addr_ovr(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
acpi_parse_lapic_addr_ovr, 0);
if (count < 0) {
- printk(KERN_ERR PREFIX
- "Error parsing LAPIC address override entry\n");
+ pi_err("Error parsing LAPIC address override entry\n");
return count;
}

@@ -860,8 +855,7 @@ static int __init acpi_parse_madt_lapic_entries(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE,
acpi_parse_lapic_addr_ovr, 0);
if (count < 0) {
- printk(KERN_ERR PREFIX
- "Error parsing LAPIC address override entry\n");
+ pi_err("Error parsing LAPIC address override entry\n");
return count;
}

@@ -877,11 +871,11 @@ static int __init acpi_parse_madt_lapic_entries(void)
acpi_parse_lapic, MAX_LOCAL_APIC);
}
if (!count && !x2count) {
- printk(KERN_ERR PREFIX "No LAPIC entries present\n");
+ pi_err("No LAPIC entries present\n");
/* TBD: Cleanup to allow fallback to MPS */
return -ENODEV;
} else if (count < 0 || x2count < 0) {
- printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
+ pi_err("Error parsing LAPIC entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
@@ -892,7 +886,7 @@ static int __init acpi_parse_madt_lapic_entries(void)
count =
acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0);
if (count < 0 || x2count < 0) {
- printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+ pi_err("Error parsing LAPIC NMI entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
@@ -950,7 +944,7 @@ void __init mp_config_acpi_legacy_irqs(void)
mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA;
#endif
set_bit(MP_ISA_BUS, mp_bus_not_pci);
- pr_debug("Bus #%d is ISA\n", MP_ISA_BUS);
+ pi_debug("Bus #%d is ISA\n", MP_ISA_BUS);

/*
* Use the default configuration for the IRQs 0-15. Unless
@@ -988,7 +982,7 @@ void __init mp_config_acpi_legacy_irqs(void)
}

if (idx != mp_irq_entries) {
- printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i);
+ pi_debug("IRQ%d used by override.\n", i);
continue; /* IRQ already used */
}

@@ -1056,16 +1050,15 @@ int mp_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)

ioapic = mp_find_ioapic(gsi);
if (ioapic < 0) {
- printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
+ pr_warn("No IOAPIC for GSI %u\n", gsi);
return gsi;
}

ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);

if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
- printk(KERN_ERR "Invalid reference to IOAPIC pin "
- "%d-%d\n", mpc_ioapic_id(ioapic),
- ioapic_pin);
+ pr_err("Invalid reference to IOAPIC pin %d-%d\n",
+ mpc_ioapic_id(ioapic), ioapic_pin);
return gsi;
}

@@ -1106,8 +1099,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
* if "noapic" boot option, don't look for IO-APICs
*/
if (skip_ioapic_setup) {
- printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
- "due to 'noapic' option.\n");
+ pi_info("Skipping IOAPIC probe due to 'noapic' option.\n");
return -ENODEV;
}

@@ -1115,10 +1107,10 @@ static int __init acpi_parse_madt_ioapic_entries(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic,
MAX_IO_APICS);
if (!count) {
- printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
+ pi_err("No IOAPIC entries present\n");
return -ENODEV;
} else if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
+ pi_err("Error parsing IOAPIC entry\n");
return count;
}

@@ -1126,8 +1118,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr,
nr_irqs);
if (count < 0) {
- printk(KERN_ERR PREFIX
- "Error parsing interrupt source overrides entry\n");
+ pi_err("Error parsing interrupt source overrides entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
@@ -1147,7 +1138,7 @@ static int __init acpi_parse_madt_ioapic_entries(void)
acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src,
nr_irqs);
if (count < 0) {
- printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+ pi_err("Error parsing NMI SRC entry\n");
/* TBD: Cleanup to allow fallback to MPS */
return count;
}
@@ -1180,8 +1171,7 @@ static void __init early_acpi_process_madt(void)
/*
* Dell Precision Workstation 410, 610 come here.
*/
- printk(KERN_ERR PREFIX
- "Invalid BIOS MADT, disabling ACPI\n");
+ pi_err("Invalid BIOS MADT, disabling ACPI\n");
disable_acpi();
}
}
@@ -1216,8 +1206,7 @@ static void __init acpi_process_madt(void)
/*
* Dell Precision Workstation 410, 610 come here.
*/
- printk(KERN_ERR PREFIX
- "Invalid BIOS MADT, disabling ACPI\n");
+ pi_err("Invalid BIOS MADT, disabling ACPI\n");
disable_acpi();
}
} else {
@@ -1227,8 +1216,7 @@ static void __init acpi_process_madt(void)
* Boot with "acpi=off" to use MPS on such a system.
*/
if (smp_found_config) {
- printk(KERN_WARNING PREFIX
- "No APIC-table, disabling MPS\n");
+ pi_warn("No APIC-table, disabling MPS\n");
smp_found_config = 0;
}
}
@@ -1238,11 +1226,11 @@ static void __init acpi_process_madt(void)
* processors, where MPS only supports physical.
*/
if (acpi_lapic && acpi_ioapic)
- printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
- "information\n");
+ pi_info("Using ACPI (MADT) for SMP configuration "
+ "information\n");
else if (acpi_lapic)
- printk(KERN_INFO "Using ACPI for processor (LAPIC) "
- "configuration information\n");
+ pi_info("Using ACPI for processor (LAPIC) configuration "
+ "information\n");
#endif
return;
}
@@ -1250,8 +1238,7 @@ static void __init acpi_process_madt(void)
static int __init disable_acpi_irq(const struct dmi_system_id *d)
{
if (!acpi_force) {
- printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
- d->ident);
+ pi_info("%s detected: force use of acpi=noirq\n", d->ident);
acpi_noirq_set();
}
return 0;
@@ -1260,8 +1247,7 @@ static int __init disable_acpi_irq(const struct dmi_system_id *d)
static int __init disable_acpi_pci(const struct dmi_system_id *d)
{
if (!acpi_force) {
- printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
- d->ident);
+ pi_notice("%s detected: force use of pci=noacpi\n", d->ident);
acpi_disable_pci();
}
return 0;
@@ -1270,11 +1256,11 @@ static int __init disable_acpi_pci(const struct dmi_system_id *d)
static int __init dmi_disable_acpi(const struct dmi_system_id *d)
{
if (!acpi_force) {
- printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
+ pi_notice("%s detected: acpi off\n", d->ident);
disable_acpi();
} else {
- printk(KERN_NOTICE
- "Warning: DMI blacklist says broken, but acpi forced\n");
+ pi_notice("Warning: DMI blacklist says broken, but acpi "
+ "forced\n");
}
return 0;
}
@@ -1285,8 +1271,8 @@ static int __init dmi_disable_acpi(const struct dmi_system_id *d)
static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
{
if (!acpi_skip_timer_override) {
- pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
- d->ident);
+ pi_notice("%s detected: Ignoring BIOS IRQ0 override\n",
+ d->ident);
acpi_skip_timer_override = 1;
}
return 0;
@@ -1469,9 +1455,9 @@ void __init acpi_boot_table_init(void)
*/
if (acpi_blacklisted()) {
if (acpi_force) {
- printk(KERN_WARNING PREFIX "acpi=force override\n");
+ pi_warn("acpi=force override\n");
} else {
- printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
+ pi_warn("Disabling ACPI support\n");
disable_acpi();
return;
}
@@ -1531,32 +1517,32 @@ static int __init parse_acpi(char *arg)
return -EINVAL;

/* "acpi=off" disables both ACPI table parsing and interpreter */
- if (strcmp(arg, "off") == 0) {
+ if (strcmp(arg, _("off")) == 0) {
disable_acpi();
}
/* acpi=force to over-ride black-list */
- else if (strcmp(arg, "force") == 0) {
+ else if (strcmp(arg, _("force")) == 0) {
acpi_force = 1;
acpi_disabled = 0;
}
/* acpi=strict disables out-of-spec workarounds */
- else if (strcmp(arg, "strict") == 0) {
+ else if (strcmp(arg, _("strict")) == 0) {
acpi_strict = 1;
}
/* acpi=rsdt use RSDT instead of XSDT */
- else if (strcmp(arg, "rsdt") == 0) {
+ else if (strcmp(arg, _("rsdt")) == 0) {
acpi_gbl_do_not_use_xsdt = TRUE;
}
/* "acpi=noirq" disables ACPI interrupt routing */
- else if (strcmp(arg, "noirq") == 0) {
+ else if (strcmp(arg, _("noirq")) == 0) {
acpi_noirq_set();
}
/* "acpi=copy_dsdt" copys DSDT */
- else if (strcmp(arg, "copy_dsdt") == 0) {
+ else if (strcmp(arg, _("copy_dsdt")) == 0) {
acpi_gbl_copy_dsdt_locally = 1;
}
/* "acpi=nocmcff" disables FF mode for corrected errors */
- else if (strcmp(arg, "nocmcff") == 0) {
+ else if (strcmp(arg, _("nocmcff")) == 0) {
acpi_disable_cmcff = 1;
} else {
/* Core will printk when we return error. */
@@ -1569,7 +1555,7 @@ early_param("acpi", parse_acpi);
/* FIXME: Using pci= for an ACPI parameter is a travesty. */
static int __init parse_pci(char *arg)
{
- if (arg && strcmp(arg, "noacpi") == 0)
+ if (arg && strcmp(arg, _("noacpi")) == 0)
acpi_disable_pci();
return 0;
}
@@ -1580,9 +1566,9 @@ int __init acpi_mps_check(void)
#if defined(CONFIG_X86_LOCAL_APIC) && !defined(CONFIG_X86_MPPARSE)
/* mptable code is not built-in*/
if (acpi_disabled || acpi_noirq) {
- printk(KERN_WARNING "MPS support code is not built-in.\n"
- "Using acpi=off or acpi=noirq or pci=noacpi "
- "may have problem\n");
+ pi_warn("MPS support code is not built-in.\n");
+ pi_cont("Using acpi=off or acpi=noirq or pci=noacpi "
+ "may have problems.\n");
return 1;
}
#endif
@@ -1609,16 +1595,16 @@ static int __init setup_acpi_sci(char *s)
{
if (!s)
return -EINVAL;
- if (!strcmp(s, "edge"))
+ if (!strcmp(s, _("edge")))
acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE |
(acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
- else if (!strcmp(s, "level"))
+ else if (!strcmp(s, _("level")))
acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL |
(acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK);
- else if (!strcmp(s, "high"))
+ else if (!strcmp(s, _("high")))
acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH |
(acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
- else if (!strcmp(s, "low"))
+ else if (!strcmp(s, _("low")))
acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW |
(acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK);
else
--
1.7.10.4

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