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benchmarks/gem_latency: Add a -C switch to measure impact of cmdparser

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-04-03 16:44:27 +01:00
parent bd292436ed
commit eac26718e6
1 changed files with 23 additions and 9 deletions
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32
benchmarks/gem_latency.c
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@ -44,6 +44,10 @@
#include <sys/resource.h> #include <sys/resource.h>
#include "drm.h" #include "drm.h"
#define CONTEXT 0x1
#define REALTIME 0x2
#define CMDPARSER 0x4
static int done; static int done;
static int fd; static int fd;
static volatile uint32_t *timestamp_reg; static volatile uint32_t *timestamp_reg;
@ -169,7 +173,8 @@ static uint32_t create_workload(int gen, int factor)
static void setup_workload(struct producer *p, int gen, static void setup_workload(struct producer *p, int gen,
uint32_t scratch, uint32_t scratch,
uint32_t batch, uint32_t batch,
int factor) int factor,
unsigned flags)
{ {
struct drm_i915_gem_execbuffer2 *eb; struct drm_i915_gem_execbuffer2 *eb;
const int has_64bit_reloc = gen >= 8; const int has_64bit_reloc = gen >= 8;
@ -206,11 +211,13 @@ static void setup_workload(struct producer *p, int gen,
eb = memset(&p->workload_dispatch.execbuf, 0, sizeof(*eb)); eb = memset(&p->workload_dispatch.execbuf, 0, sizeof(*eb));
eb->buffers_ptr = (uintptr_t)p->workload_dispatch.exec; eb->buffers_ptr = (uintptr_t)p->workload_dispatch.exec;
eb->buffer_count = 2; eb->buffer_count = 2;
if (flags & CMDPARSER)
eb->batch_len = 4096;
eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC; eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC;
eb->rsvd1 = p->ctx; eb->rsvd1 = p->ctx;
} }
static void setup_latency(struct producer *p, int gen) static void setup_latency(struct producer *p, int gen, unsigned flags)
{ {
struct drm_i915_gem_execbuffer2 *eb; struct drm_i915_gem_execbuffer2 *eb;
const int has_64bit_reloc = gen >= 8; const int has_64bit_reloc = gen >= 8;
@ -250,6 +257,8 @@ static void setup_latency(struct producer *p, int gen)
eb = memset(&p->latency_dispatch.execbuf, 0, sizeof(*eb)); eb = memset(&p->latency_dispatch.execbuf, 0, sizeof(*eb));
eb->buffers_ptr = (uintptr_t)p->latency_dispatch.exec; eb->buffers_ptr = (uintptr_t)p->latency_dispatch.exec;
eb->buffer_count = 1; eb->buffer_count = 1;
if (flags & CMDPARSER)
eb->batch_len = sizeof(*map) * ((i + 1) & ~1);
eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC; eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC;
eb->rsvd1 = p->ctx; eb->rsvd1 = p->ctx;
} }
@ -265,7 +274,7 @@ static uint32_t create_nop(void)
return handle; return handle;
} }
static void setup_nop(struct producer *p, uint32_t batch) static void setup_nop(struct producer *p, uint32_t batch, unsigned flags)
{ {
struct drm_i915_gem_execbuffer2 *eb; struct drm_i915_gem_execbuffer2 *eb;
@ -274,6 +283,8 @@ static void setup_nop(struct producer *p, uint32_t batch)
eb = memset(&p->nop_dispatch.execbuf, 0, sizeof(*eb)); eb = memset(&p->nop_dispatch.execbuf, 0, sizeof(*eb));
eb->buffers_ptr = (uintptr_t)p->nop_dispatch.exec; eb->buffers_ptr = (uintptr_t)p->nop_dispatch.exec;
eb->buffer_count = 1; eb->buffer_count = 1;
if (flags & CMDPARSER)
eb->batch_len = 8;
eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC; eb->flags = I915_EXEC_BLT | LOCAL_EXEC_NO_RELOC;
eb->rsvd1 = p->ctx; eb->rsvd1 = p->ctx;
} }
@ -388,8 +399,6 @@ static double cpu_time(const struct rusage *r)
(r->ru_utime.tv_usec + r->ru_stime.tv_usec); (r->ru_utime.tv_usec + r->ru_stime.tv_usec);
} }
#define CONTEXT 1
#define REALTIME 2
static int run(int seconds, static int run(int seconds,
int nproducers, int nproducers,
int nconsumers, int nconsumers,
@ -442,9 +451,9 @@ static int run(int seconds,
if (flags & CONTEXT) if (flags & CONTEXT)
p[n].ctx = gem_context_create(fd); p[n].ctx = gem_context_create(fd);
setup_nop(&p[n], nop_batch); setup_nop(&p[n], nop_batch, flags);
setup_workload(&p[n], gen, scratch, workload_batch, workload); setup_workload(&p[n], gen, scratch, workload_batch, workload, flags);
setup_latency(&p[n], gen); setup_latency(&p[n], gen, flags);
pthread_mutex_init(&p[n].lock, NULL); pthread_mutex_init(&p[n].lock, NULL);
pthread_cond_init(&p[n].p_cond, NULL); pthread_cond_init(&p[n].p_cond, NULL);
@ -546,7 +555,7 @@ int main(int argc, char **argv)
unsigned flags = 0; unsigned flags = 0;
int c; int c;
while ((c = getopt(argc, argv, "p:c:n:w:t:f:sR")) != -1) { while ((c = getopt(argc, argv, "Cp:c:n:w:t:f:sR")) != -1) {
switch (c) { switch (c) {
case 'p': case 'p':
/* How many threads generate work? */ /* How many threads generate work? */
@ -605,6 +614,11 @@ int main(int argc, char **argv)
flags |= REALTIME; flags |= REALTIME;
break; break;
case 'C':
/* Don't hide from the command parser (gen7) */
flags |= CMDPARSER;
break;
default: default:
break; break;
} }