[POWERPC] spufs: Add spu stats in sysfs
Export spu statistics in sysfs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c
index 3a9e49a..e064d0c 100644
--- a/arch/powerpc/platforms/cell/spufs/fault.c
+++ b/arch/powerpc/platforms/cell/spufs/fault.c
@@ -187,6 +187,10 @@
dsisr, ctx->state);
ctx->stats.hash_flt++;
+ if (ctx->state == SPU_STATE_RUNNABLE) {
+ ctx->spu->stats.hash_flt++;
+ spu_switch_state(ctx->spu, SPU_UTIL_IOWAIT);
+ }
/* we must not hold the lock when entering spu_handle_mm_fault */
spu_release(ctx);
@@ -212,6 +216,12 @@
ctx->stats.min_flt++;
else
ctx->stats.maj_flt++;
+ if (ctx->state == SPU_STATE_RUNNABLE) {
+ if (flt == VM_FAULT_MINOR)
+ ctx->spu->stats.min_flt++;
+ else
+ ctx->spu->stats.maj_flt++;
+ }
if (ctx->spu)
ctx->ops->restart_dma(ctx);
diff --git a/arch/powerpc/platforms/cell/spufs/run.c b/arch/powerpc/platforms/cell/spufs/run.c
index 05cf815..58ae13b 100644
--- a/arch/powerpc/platforms/cell/spufs/run.c
+++ b/arch/powerpc/platforms/cell/spufs/run.c
@@ -352,7 +352,8 @@
SPU_STATUS_SINGLE_STEP)));
if ((status & SPU_STATUS_STOPPED_BY_STOP) &&
- (((status >> SPU_STOP_STATUS_SHIFT) & 0x3f00) == 0x2100))
+ (((status >> SPU_STOP_STATUS_SHIFT) & 0x3f00) == 0x2100) &&
+ (ctx->state == SPU_STATE_RUNNABLE))
ctx->stats.libassist++;
ctx->ops->master_stop(ctx);
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 9fb3133..e5b4dd1 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -251,6 +251,7 @@
spu_cpu_affinity_set(spu, raw_smp_processor_id());
spu_switch_notify(spu, ctx);
ctx->state = SPU_STATE_RUNNABLE;
+ spu_switch_state(spu, SPU_UTIL_SYSTEM);
}
/**
@@ -263,6 +264,8 @@
pr_debug("%s: unbind pid=%d SPU=%d NODE=%d\n", __FUNCTION__,
spu->pid, spu->number, spu->node);
+ spu_switch_state(spu, SPU_UTIL_IDLE);
+
spu_switch_notify(spu, NULL);
spu_unmap_mappings(ctx);
spu_save(&ctx->csa, spu);
@@ -426,6 +429,7 @@
spu_remove_from_active_list(spu);
spu_unbind_context(spu, victim);
victim->stats.invol_ctx_switch++;
+ spu->stats.invol_ctx_switch++;
mutex_unlock(&victim->state_mutex);
/*
* We need to break out of the wait loop in spu_run
@@ -526,6 +530,7 @@
spu_remove_from_active_list(spu);
spu_unbind_context(spu, ctx);
ctx->stats.vol_ctx_switch++;
+ spu->stats.vol_ctx_switch++;
spu_free(spu);
if (new)
wake_up(&new->stop_wq);
@@ -572,8 +577,10 @@
mutex_lock(&ctx->state_mutex);
if (__spu_deactivate(ctx, 0, MAX_PRIO))
spuctx_switch_state(ctx, SPUCTX_UTIL_USER);
- else
+ else {
spuctx_switch_state(ctx, SPUCTX_UTIL_LOADED);
+ spu_switch_state(ctx->spu, SPU_UTIL_USER);
+ }
mutex_unlock(&ctx->state_mutex);
}
}
@@ -603,6 +610,7 @@
__spu_remove_from_active_list(spu);
spu_unbind_context(spu, ctx);
ctx->stats.invol_ctx_switch++;
+ spu->stats.invol_ctx_switch++;
spu_free(spu);
wake_up(&new->stop_wq);
/*
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index cd2b54f..08b3530 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -307,4 +307,17 @@
}
}
+static inline void spu_switch_state(struct spu *spu,
+ enum spuctx_execution_state new_state)
+{
+ if (spu->stats.utilization_state != new_state) {
+ unsigned long curtime = jiffies;
+
+ spu->stats.times[spu->stats.utilization_state] +=
+ curtime - spu->stats.tstamp;
+ spu->stats.tstamp = curtime;
+ spu->stats.utilization_state = new_state;
+ }
+}
+
#endif