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x86, UV: Shorten access to BAU statistics structure 

Use a pointer from the per-cpu BAU control structure to the
per-cpu BAU statistics structure.
We nearly always know the first before needing the second.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Cc: gregkh@suse.de
LKML-Reference: <E1OJvNy-0004aB-2k@eag09.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Cliff Wickman 2010-06-02 16:22:02 -05:00 committed by Ingo Molnar
parent 50fb55acc5
commit 712157aa70
2 changed files with 9 additions and 8 deletions
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1
arch/x86/include/asm/uv/uv_bau.h
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@ -332,6 +332,7 @@ struct bau_control {
struct bau_payload_queue_entry *bau_msg_head;
struct bau_control *uvhub_master;
struct bau_control *socket_master;
struct ptc_stats *statp;
unsigned long timeout_interval;
unsigned long set_bau_on_time;
atomic_t active_descriptor_count;

16
arch/x86/kernel/tlb_uv.c
View File

@ -153,7 +153,7 @@ static inline void uv_bau_process_retry_msg(struct msg_desc *mdp,
struct ptc_stats *stat;
msg = mdp->msg;
stat = &per_cpu(ptcstats, bcp->cpu);
stat = bcp->statp;
stat->d_retries++;
/*
* cancel any message from msg+1 to the retry itself
@ -217,7 +217,7 @@ static void uv_bau_process_message(struct msg_desc *mdp,
* This must be a normal message, or retry of a normal message
*/
msg = mdp->msg;
stat = &per_cpu(ptcstats, bcp->cpu);
stat = bcp->statp;
if (msg->address == TLB_FLUSH_ALL) {
local_flush_tlb();
stat->d_alltlb++;
@ -301,7 +301,7 @@ uv_do_reset(void *ptr)
bcp = &per_cpu(bau_control, smp_processor_id());
rap = (struct reset_args *)ptr;
stat = &per_cpu(ptcstats, bcp->cpu);
stat = bcp->statp;
stat->d_resets++;
/*
@ -419,7 +419,7 @@ static int uv_wait_completion(struct bau_desc *bau_desc,
unsigned long mask;
cycles_t ttime;
cycles_t timeout_time;
struct ptc_stats *stat = &per_cpu(ptcstats, this_cpu);
struct ptc_stats *stat = bcp->statp;
struct bau_control *hmaster;
hmaster = bcp->uvhub_master;
@ -583,7 +583,7 @@ const struct cpumask *uv_flush_send_and_wait(struct bau_desc *bau_desc,
cycles_t time1;
cycles_t time2;
cycles_t elapsed;
struct ptc_stats *stat = &per_cpu(ptcstats, bcp->cpu);
struct ptc_stats *stat = bcp->statp;
struct bau_control *smaster = bcp->socket_master;
struct bau_control *hmaster = bcp->uvhub_master;
@ -794,7 +794,7 @@ const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
return cpumask;
bcp = &per_cpu(bau_control, cpu);
stat = &per_cpu(ptcstats, cpu);
stat = bcp->statp;
/* bau was disabled due to slow response */
if (bcp->baudisabled) {
@ -903,7 +903,7 @@ void uv_bau_message_interrupt(struct pt_regs *regs)
time_start = get_cycles();
bcp = &per_cpu(bau_control, smp_processor_id());
stat = &per_cpu(ptcstats, smp_processor_id());
stat = bcp->statp;
msgdesc.va_queue_first = bcp->va_queue_first;
msgdesc.va_queue_last = bcp->va_queue_last;
msg = bcp->bau_msg_head;
@ -1636,6 +1636,7 @@ static void uv_init_per_cpu(int nuvhubs)
for_each_present_cpu(cpu) {
bcp = &per_cpu(bau_control, cpu);
bcp->baudisabled = 0;
bcp->statp = &per_cpu(ptcstats, cpu);
/* time interval to catch a hardware stay-busy bug */
bcp->timeout_interval = microsec_2_cycles(2*timeout_us);
bcp->max_bau_concurrent = max_bau_concurrent;
@ -1673,7 +1674,6 @@ static int __init uv_bau_init(void)
zalloc_cpumask_var_node(&per_cpu(uv_flush_tlb_mask, cur_cpu),
GFP_KERNEL, cpu_to_node(cur_cpu));
max_bau_concurrent = MAX_BAU_CONCURRENT;
uv_nshift = uv_hub_info->m_val;
uv_mmask = (1UL << uv_hub_info->m_val) - 1;
nuvhubs = uv_num_possible_blades();