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[MIPS] Make SMTC_IDLE_HOOK_DEBUG a proper option in Kconfig.debug.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-02-26 20:46:34 +00:00
parent e016c38d18
commit c68644d330
3 changed files with 19 additions and 13 deletions
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9
arch/mips/Kconfig.debug
View File

@ -37,6 +37,15 @@ config DEBUG_STACK_USAGE
This option will slow down process creation somewhat.
config CONFIG_SMTC_IDLE_HOOK_DEBUG
bool "Enable additional debug checks before going into CPU idle loop"
depends on DEBUG_KERNEL && MIPS_MT_SMTC
help
This option enables Enable additional debug checks before going into
CPU idle loop. For details on these checks, see
arch/mips/kernel/smtc.c. This debugging option result in significant
overhead so should be disabled in production kernels.
config KGDB
bool "Remote GDB kernel debugging"
depends on DEBUG_KERNEL && SYS_SUPPORTS_KGDB

4
arch/mips/kernel/process.c
View File

@ -51,11 +51,11 @@ ATTRIB_NORET void cpu_idle(void)
/* endless idle loop with no priority at all */
while (1) {
while (!need_resched()) {
#ifdef CONFIG_MIPS_MT_SMTC
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
extern void smtc_idle_loop_hook(void);
smtc_idle_loop_hook();
#endif /* CONFIG_MIPS_MT_SMTC */
#endif
if (cpu_wait)
(*cpu_wait)();
}

19
arch/mips/kernel/smtc.c
View File

@ -141,10 +141,7 @@ __setup("ipibufs=", ipibufs);
__setup("nostlb", stlb_disable);
__setup("asidmask=", asidmask_set);
/* Enable additional debug checks before going into CPU idle loop */
#define SMTC_IDLE_HOOK_DEBUG
#ifdef SMTC_IDLE_HOOK_DEBUG
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
static int hang_trig = 0;
@ -176,7 +173,7 @@ int tcnoprog[NR_CPUS];
static atomic_t idle_hook_initialized = {0};
static int clock_hang_reported[NR_CPUS];
#endif /* SMTC_IDLE_HOOK_DEBUG */
#endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */
/* Initialize shared TLB - the should probably migrate to smtc_setup_cpus() */
@ -394,10 +391,10 @@ void mipsmt_prepare_cpus(void)
printk("ASID mask value override to 0x%x\n", asidmask);
/* Temporary */
#ifdef SMTC_IDLE_HOOK_DEBUG
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
if (hang_trig)
printk("Logic Analyser Trigger on suspected TC hang\n");
#endif /* SMTC_IDLE_HOOK_DEBUG */
#endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */
/* Put MVPE's into 'configuration state' */
write_c0_mvpcontrol( read_c0_mvpcontrol() | MVPCONTROL_VPC );
@ -817,9 +814,9 @@ void ipi_decode(struct smtc_ipi *pipi)
case SMTC_CLOCK_TICK:
/* Invoke Clock "Interrupt" */
ipi_timer_latch[dest_copy] = 0;
#ifdef SMTC_IDLE_HOOK_DEBUG
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
clock_hang_reported[dest_copy] = 0;
#endif /* SMTC_IDLE_HOOK_DEBUG */
#endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */
local_timer_interrupt(0, NULL);
break;
case LINUX_SMP_IPI:
@ -1020,7 +1017,7 @@ EXPORT_SYMBOL(smtc_ipi_replay);
void smtc_idle_loop_hook(void)
{
#ifdef SMTC_IDLE_HOOK_DEBUG
#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
int im;
int flags;
int mtflags;
@ -1113,7 +1110,7 @@ void smtc_idle_loop_hook(void)
local_irq_restore(flags);
if (pdb_msg != &id_ho_db_msg[0])
printk("CPU%d: %s", smp_processor_id(), id_ho_db_msg);
#endif /* SMTC_IDLE_HOOK_DEBUG */
#endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */
/*
* Replay any accumulated deferred IPIs. If "Instant Replay"