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powerpc/pseries: Use macros for referring to the DTL enable mask

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Introduce macros to encode the DTL enable mask fields and use those
instead of hardcoding numbers.

Acked-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Naveen N. Rao 2019-07-03 22:33:54 +05:30 committed by Michael Ellerman
parent 31afa05bf9
commit 515bbc8ab4
4 changed files with 14 additions and 9 deletions
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11
arch/powerpc/include/asm/lppaca.h
View file

@ -154,6 +154,17 @@ struct dtl_entry {
#define DISPATCH_LOG_BYTES 4096 /* bytes per cpu */
#define N_DISPATCH_LOG (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))
/*
* Dispatch trace log event enable mask:
* 0x1: voluntary virtual processor waits
* 0x2: time-slice preempts
* 0x4: virtual partition memory page faults
*/
#define DTL_LOG_CEDE 0x1
#define DTL_LOG_PREEMPT 0x2
#define DTL_LOG_FAULT 0x4
#define DTL_LOG_ALL (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT)
extern struct kmem_cache *dtl_cache;
/*

8
arch/powerpc/platforms/pseries/dtl.c
View file

@ -40,13 +40,7 @@ struct dtl {
};
static DEFINE_PER_CPU(struct dtl, cpu_dtl);
/*
* Dispatch trace log event mask:
* 0x7: 0x1: voluntary virtual processor waits
* 0x2: time-slice preempts
* 0x4: virtual partition memory page faults
*/
static u8 dtl_event_mask = 0x7;
static u8 dtl_event_mask = DTL_LOG_ALL;
/*

2
arch/powerpc/platforms/pseries/lpar.c
View file

@ -126,7 +126,7 @@ void vpa_init(int cpu)
pr_err("WARNING: DTL registration of cpu %d (hw %d) "
"failed with %ld\n", smp_processor_id(),
hwcpu, ret);
lppaca_of(cpu).dtl_enable_mask = 2;
lppaca_of(cpu).dtl_enable_mask = DTL_LOG_PREEMPT;
}
}

2
arch/powerpc/platforms/pseries/setup.c
View file

@ -318,7 +318,7 @@ static int alloc_dispatch_logs(void)
pr_err("WARNING: DTL registration of cpu %d (hw %d) failed "
"with %d\n", smp_processor_id(),
hard_smp_processor_id(), ret);
get_paca()->lppaca_ptr->dtl_enable_mask = 2;
get_paca()->lppaca_ptr->dtl_enable_mask = DTL_LOG_PREEMPT;
return 0;
}