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SubjectRe: [PATCH 03/18] printk: Convert pr_fmt from blank define to KBUILD_MODNAME
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On Fri, 2018-05-18 at 23:29 +0300, Andy Shevchenko wrote:
> On Fri, May 18, 2018 at 12:10 PM, Joe Perches <joe@perches.com> wrote:
> > On Fri, 2018-05-18 at 10:42 +0200, Petr Mladek wrote:
> > > On Thu 2018-05-10 08:45:29, Joe Perches wrote:
> > > [ 0.000000] libftrace: ftrace: allocating 40753 entries in 160 pages
> > > [ 0.004008] apic: APIC: Switch to symmetric I/O mode setup
> >
> > I believe the uppercase APIC: bit should be removed.
>
> I disagree on lowering the case of some prefixes.
>
> In the case when kernel crashes at boot time and only what you have is
> what on your screen it's much better to catch with different cases
> than if everything would be either upper or lower.

I don't parse.
My suggestion is to make "apic: " the only prefix.

ie:
---
arch/x86/kernel/apic/apic.c | 100 +++++++++++++++++++++-----------------------
1 file changed, 47 insertions(+), 53 deletions(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 2aabd4cb0e3f..67dd4e9191da 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -14,6 +14,8 @@
* Mikael Pettersson : PM converted to driver model.
*/

+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/perf_event.h>
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
@@ -232,7 +234,7 @@ static int modern_apic(void)
*/
static void __init apic_disable(void)
{
- pr_info("APIC: switched to apic NOOP\n");
+ pr_info("switched to apic NOOP\n");
apic = &apic_noop;
}

@@ -430,17 +432,13 @@ int setup_APIC_eilvt(u8 offset, u8 vector, u8 msg_type, u8 mask)
reserved = reserve_eilvt_offset(offset, new);

if (reserved != new) {
- pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for "
- "vector 0x%x, but the register is already in use for "
- "vector 0x%x on another cpu\n",
+ pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for vector 0x%x, but the register is already in use for vector 0x%x on another cpu\n",
smp_processor_id(), reg, offset, new, reserved);
return -EINVAL;
}

if (!eilvt_entry_is_changeable(old, new)) {
- pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for "
- "vector 0x%x, but the register is already in use for "
- "vector 0x%x on this cpu\n",
+ pr_err(FW_BUG "cpu %d, try to use APIC%lX (LVT offset %d) for vector 0x%x, but the register is already in use for vector 0x%x on this cpu\n",
smp_processor_id(), reg, offset, new, old);
return -EBUSY;
}
@@ -624,8 +622,8 @@ static void apic_check_deadline_errata(void)
return;

setup_clear_cpu_cap(X86_FEATURE_TSC_DEADLINE_TIMER);
- pr_err(FW_BUG "TSC_DEADLINE disabled due to Errata; "
- "please update microcode to version: 0x%x (or later)\n", rev);
+ pr_err(FW_BUG "TSC_DEADLINE disabled due to Errata; please update microcode to version: 0x%x (or later)\n",
+ rev);
}

/*
@@ -769,14 +767,14 @@ calibrate_by_pmtimer(long deltapm, long *delta, long *deltatsc)

res = (((u64)deltapm) * mult) >> 22;
do_div(res, 1000000);
- pr_warning("APIC calibration not consistent "
- "with PM-Timer: %ldms instead of 100ms\n",(long)res);
+ pr_warn("calibration not consistent with PM-Timer: %ldms instead of 100ms\n",
+ (long)res);

/* Correct the lapic counter value */
res = (((u64)(*delta)) * pm_100ms);
do_div(res, deltapm);
- pr_info("APIC delta adjusted to PM-Timer: "
- "%lu (%ld)\n", (unsigned long)res, *delta);
+ pr_info("APIC delta adjusted to PM-Timer: %lu (%ld)\n",
+ (unsigned long)res, *delta);
*delta = (long)res;

/* Correct the tsc counter value */
@@ -893,7 +891,7 @@ static int __init calibrate_APIC_clock(void)
*/
if (lapic_timer_frequency < (1000000 / HZ)) {
local_irq_enable();
- pr_warning("APIC frequency too slow, disabling apic timer\n");
+ pr_warn("frequency too slow, disabling apic timer\n");
return -1;
}

@@ -936,8 +934,8 @@ static int __init calibrate_APIC_clock(void)
local_irq_enable();

if (levt->features & CLOCK_EVT_FEAT_DUMMY) {
- pr_warning("APIC timer disabled due to verification failure\n");
- return -1;
+ pr_warn("timer disabled due to verification failure\n");
+ return -1;
}

return 0;
@@ -1010,8 +1008,8 @@ static void local_apic_timer_interrupt(void)
* spurious.
*/
if (!evt->event_handler) {
- pr_warning("Spurious LAPIC timer interrupt on cpu %d\n",
- smp_processor_id());
+ pr_warn("Spurious LAPIC timer interrupt on cpu %d\n",
+ smp_processor_id());
/* Switch it off */
lapic_timer_shutdown(evt);
return;
@@ -1254,7 +1252,7 @@ static int __init apic_intr_mode_select(void)
APIC_INTEGRATED(boot_cpu_apic_version)) {
disable_apic = 1;
pr_err(FW_BUG "Local APIC %d not detected, force emulation\n",
- boot_cpu_physical_apicid);
+ boot_cpu_physical_apicid);
return APIC_PIC;
}
#endif
@@ -1263,7 +1261,7 @@ static int __init apic_intr_mode_select(void)
if (!smp_found_config) {
disable_ioapic_support();
if (!acpi_lapic) {
- pr_info("APIC: ACPI MADT or MP tables are not detected\n");
+ pr_info("ACPI MADT or MP tables are not detected\n");
return APIC_VIRTUAL_WIRE_NO_CONFIG;
}
return APIC_VIRTUAL_WIRE;
@@ -1272,7 +1270,7 @@ static int __init apic_intr_mode_select(void)
#ifdef CONFIG_SMP
/* If SMP should be disabled, then really disable it! */
if (!setup_max_cpus) {
- pr_info("APIC: SMP mode deactivated\n");
+ pr_info("SMP mode deactivated\n");
return APIC_SYMMETRIC_IO_NO_ROUTING;
}

@@ -1344,23 +1342,23 @@ void __init apic_intr_mode_init(void)

switch (apic_intr_mode) {
case APIC_PIC:
- pr_info("APIC: Keep in PIC mode(8259)\n");
+ pr_info("Keep in PIC mode(8259)\n");
return;
case APIC_VIRTUAL_WIRE:
- pr_info("APIC: Switch to virtual wire mode setup\n");
+ pr_info("Switch to virtual wire mode setup\n");
default_setup_apic_routing();
break;
case APIC_VIRTUAL_WIRE_NO_CONFIG:
- pr_info("APIC: Switch to virtual wire mode setup with no configuration\n");
+ pr_info("Switch to virtual wire mode setup with no configuration\n");
upmode = true;
default_setup_apic_routing();
break;
case APIC_SYMMETRIC_IO:
- pr_info("APIC: Switch to symmetric I/O mode setup\n");
+ pr_info("Switch to symmetric I/O mode setup\n");
default_setup_apic_routing();
break;
case APIC_SYMMETRIC_IO_NO_ROUTING:
- pr_info("APIC: Switch to symmetric I/O mode setup in no SMP routine\n");
+ pr_info("Switch to symmetric I/O mode setup in no SMP routine\n");
break;
}

@@ -1372,7 +1370,7 @@ static void lapic_setup_esr(void)
unsigned int oldvalue, value, maxlvt;

if (!lapic_is_integrated()) {
- pr_info("No ESR for 82489DX.\n");
+ pr_info("No ESR for 82489DX\n");
return;
}

@@ -1383,7 +1381,7 @@ static void lapic_setup_esr(void)
* ESR disabled - we can't do anything useful with the
* errors anyway - mbligh
*/
- pr_info("Leaving ESR disabled.\n");
+ pr_info("Leaving ESR disabled\n");
return;
}

@@ -1442,7 +1440,8 @@ static void apic_pending_intr_clear(void)
}
}
if (acked > 256) {
- pr_err("LAPIC pending interrupts after %d EOI\n", acked);
+ pr_err("LAPIC pending interrupts after %d EOI\n",
+ acked);
break;
}
if (queued) {
@@ -1679,11 +1678,11 @@ static int __init setup_nox2apic(char *str)
int apicid = native_apic_msr_read(APIC_ID);

if (apicid >= 255) {
- pr_warning("Apicid: %08x, cannot enforce nox2apic\n",
- apicid);
+ pr_warn("Apicid: %08x, cannot enforce nox2apic\n",
+ apicid);
return 0;
}
- pr_warning("x2apic already enabled.\n");
+ pr_warn("x2apic already enabled\n");
__x2apic_disable();
}
setup_clear_cpu_cap(X86_FEATURE_X2APIC);
@@ -1851,7 +1850,7 @@ static int __init apic_verify(void)
*/
features = cpuid_edx(1);
if (!(features & (1 << X86_FEATURE_APIC))) {
- pr_warning("Could not enable APIC!\n");
+ pr_warn("Could not enable APIC!\n");
return -1;
}
set_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
@@ -1923,8 +1922,7 @@ static int __init detect_init_APIC(void)
* "lapic" specified.
*/
if (!force_enable_local_apic) {
- pr_info("Local APIC disabled by BIOS -- "
- "you can enable it with \"lapic\"\n");
+ pr_info("Local APIC disabled by BIOS -- you can enable it with \"lapic\"\n");
return -1;
}
if (apic_force_enable(APIC_DEFAULT_PHYS_BASE))
@@ -1961,7 +1959,7 @@ void __init init_apic_mappings(void)
/* If no local APIC can be found return early */
if (!smp_found_config && detect_init_APIC()) {
/* lets NOP'ify apic operations */
- pr_info("APIC: disable apic facility\n");
+ pr_info("disable apic facility\n");
apic_disable();
} else {
apic_phys = mp_lapic_addr;
@@ -2248,9 +2246,8 @@ int generic_processor_info(int apicid, int version)
disabled_cpu_apicid == apicid) {
int thiscpu = num_processors + disabled_cpus;

- pr_warning("APIC: Disabling requested cpu."
- " Processor %d/0x%x ignored.\n",
- thiscpu, apicid);
+ pr_warn("Disabling requested cpu. Processor %d/0x%x ignored.\n",
+ thiscpu, apicid);

disabled_cpus++;
return -ENODEV;
@@ -2264,10 +2261,7 @@ int generic_processor_info(int apicid, int version)
apicid != boot_cpu_physical_apicid) {
int thiscpu = max + disabled_cpus - 1;

- pr_warning(
- "APIC: NR_CPUS/possible_cpus limit of %i almost"
- " reached. Keeping one slot for boot cpu."
- " Processor %d/0x%x ignored.\n", max, thiscpu, apicid);
+ pr_warn("NR_CPUS/possible_cpus limit of %i almost reached. Keeping one slot for boot cpu. Processor %d/0x%x ignored.\n", max, thiscpu, apicid);

disabled_cpus++;
return -ENODEV;
@@ -2276,9 +2270,8 @@ int generic_processor_info(int apicid, int version)
if (num_processors >= nr_cpu_ids) {
int thiscpu = max + disabled_cpus;

- pr_warning("APIC: NR_CPUS/possible_cpus limit of %i "
- "reached. Processor %d/0x%x ignored.\n",
- max, thiscpu, apicid);
+ pr_warn("NR_CPUS/possible_cpus limit of %i reached. Processor %d/0x%x ignored.\n",
+ max, thiscpu, apicid);

disabled_cpus++;
return -EINVAL;
@@ -2308,13 +2301,13 @@ int generic_processor_info(int apicid, int version)
* Validate version
*/
if (version == 0x0) {
- pr_warning("BIOS bug: APIC version is 0 for CPU %d/0x%x, fixing up to 0x10\n",
- cpu, apicid);
+ pr_warn("BIOS bug: APIC version is 0 for CPU %d/0x%x, fixing up to 0x10\n",
+ cpu, apicid);
version = 0x10;
}

if (version != boot_cpu_apic_version) {
- pr_warning("BIOS bug: APIC version mismatch, boot CPU: %x, CPU %d: version %x\n",
+ pr_warn("BIOS bug: APIC version mismatch, boot CPU: %x, CPU %d: version %x\n",
boot_cpu_apic_version, cpu, version);
}

@@ -2590,7 +2583,7 @@ static int set_multi(const struct dmi_system_id *d)
{
if (multi)
return 0;
- pr_info("APIC: %s detected, Multi Chassis\n", d->ident);
+ pr_info("%s detected, Multi Chassis\n", d->ident);
multi = 1;
return 0;
}
@@ -2686,8 +2679,8 @@ static int __init apic_set_verbosity(char *arg)
apic_verbosity = APIC_VERBOSE;
#ifdef CONFIG_X86_64
else {
- pr_warning("APIC Verbosity level %s not recognised"
- " use apic=verbose or apic=debug\n", arg);
+ pr_warn("Verbosity level %s not recognised use apic=verbose or apic=debug\n",
+ arg);
return -EINVAL;
}
#endif
@@ -2736,7 +2729,8 @@ static int __init apic_set_extnmi(char *arg)
else if (!strncmp("bsp", arg, 3))
apic_extnmi = APIC_EXTNMI_BSP;
else {
- pr_warn("Unknown external NMI delivery mode `%s' ignored\n", arg);
+ pr_warn("Unknown external NMI delivery mode `%s' ignored\n",
+ arg);
return -EINVAL;
}

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