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powerpc/nohash: Remove DEBUG_HARDER

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DEBUG_HARDER is not user selectable.

Remove it together with related messages.

Also remove two pr_devel() messages that should
likely have been pr_hard().

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0f25109b0e12fdd1e6541dedbb2212cc53526a57.1622712515.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-06-03 09:29:07 +00:00 committed by Michael Ellerman
parent a36c0faf3d
commit e2c043163d
1 changed files with 0 additions and 32 deletions
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32
arch/powerpc/mm/nohash/mmu_context.c
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@ -21,19 +21,6 @@
* also clear mm->cpu_vm_mask bits when processes are migrated
*/
//#define DEBUG_HARDER
/* We don't use DEBUG because it tends to be compiled in always nowadays
* and this would generate way too much output
*/
#ifdef DEBUG_HARDER
#define pr_hard(args...) printk(KERN_DEBUG args)
#define pr_hardcont(args...) printk(KERN_CONT args)
#else
#define pr_hard(args...) do { } while(0)
#define pr_hardcont(args...) do { } while(0)
#endif
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
@ -127,7 +114,6 @@ static unsigned int steal_context_smp(unsigned int id)
id = FIRST_CONTEXT;
continue;
}
pr_hardcont(" | steal %d from 0x%p", id, mm);
/* Mark this mm has having no context anymore */
mm->context.id = MMU_NO_CONTEXT;
@ -169,8 +155,6 @@ static unsigned int steal_all_contexts(void)
/* Pick up the victim mm */
mm = context_mm[id];
pr_hardcont(" | steal %d from 0x%p", id, mm);
/* Mark this mm as having no context anymore */
mm->context.id = MMU_NO_CONTEXT;
if (id != FIRST_CONTEXT) {
@ -202,8 +186,6 @@ static unsigned int steal_context_up(unsigned int id)
/* Pick up the victim mm */
mm = context_mm[id];
pr_hardcont(" | steal %d from 0x%p", id, mm);
/* Flush the TLB for that context */
local_flush_tlb_mm(mm);
@ -254,14 +236,10 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
/* No lockless fast path .. yet */
raw_spin_lock(&context_lock);
pr_hard("[%d] activating context for mm @%p, active=%d, id=%d",
cpu, next, next->context.active, next->context.id);
if (IS_ENABLED(CONFIG_SMP)) {
/* Mark us active and the previous one not anymore */
next->context.active++;
if (prev) {
pr_hardcont(" (old=0x%p a=%d)", prev, prev->context.active);
WARN_ON(prev->context.active < 1);
prev->context.active--;
}
@ -306,7 +284,6 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
next_context = id + 1;
context_mm[id] = next;
next->context.id = id;
pr_hardcont(" | new id=%d,nrf=%d", id, nr_free_contexts);
ctxt_ok:
@ -314,10 +291,6 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
* local TLB for it and unmark it before we use it
*/
if (IS_ENABLED(CONFIG_SMP) && test_bit(id, stale_map[cpu])) {
pr_hardcont(" | stale flush %d [%d..%d]",
id, cpu_first_thread_sibling(cpu),
cpu_last_thread_sibling(cpu));
local_flush_tlb_mm(next);
/* XXX This clear should ultimately be part of local_flush_tlb_mm */
@ -329,7 +302,6 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
}
/* Flick the MMU and release lock */
pr_hardcont(" -> %d\n", id);
if (IS_ENABLED(CONFIG_BDI_SWITCH))
abatron_pteptrs[1] = next->pgd;
set_context(id, next->pgd);
@ -341,8 +313,6 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
*/
int init_new_context(struct task_struct *t, struct mm_struct *mm)
{
pr_hard("initing context for mm @%p\n", mm);
/*
* We have MMU_NO_CONTEXT set to be ~0. Hence check
* explicitly against context.id == 0. This ensures that we properly
@ -390,7 +360,6 @@ static int mmu_ctx_cpu_prepare(unsigned int cpu)
if (cpu == boot_cpuid)
return 0;
pr_devel("MMU: Allocating stale context map for CPU %d\n", cpu);
stale_map[cpu] = kzalloc(CTX_MAP_SIZE, GFP_KERNEL);
return 0;
}
@ -401,7 +370,6 @@ static int mmu_ctx_cpu_dead(unsigned int cpu)
if (cpu == boot_cpuid)
return 0;
pr_devel("MMU: Freeing stale context map for CPU %d\n", cpu);
kfree(stale_map[cpu]);
stale_map[cpu] = NULL;