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igt/gem_seqno_wrap: Use debugfs singleton

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This has the added advantage of automounting debugfs for us.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-08-29 21:25:14 +01:00
parent 982f7eb238
commit 255bade1ea
1 changed files with 3 additions and 19 deletions
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22
tests/gem_seqno_wrap.c
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@ -45,6 +45,7 @@
#include "drmtest.h" #include "drmtest.h"
#include "igt_core.h" #include "igt_core.h"
#include "igt_aux.h" #include "igt_aux.h"
#include "igt_debugfs.h"
#include "intel_bufmgr.h" #include "intel_bufmgr.h"
#include "intel_batchbuffer.h" #include "intel_batchbuffer.h"
#include "intel_io.h" #include "intel_io.h"
@ -277,23 +278,6 @@ static void run_sync_test(int num_buffers, bool verify)
close(fd); close(fd);
} }
static const char *dfs_base = "/sys/kernel/debug/dri";
static const char *dfs_entry = "i915_next_seqno";
static int dfs_open(int mode)
{
char fname[FILENAME_MAX];
int fh;
snprintf(fname, FILENAME_MAX, "%s/%i/%s",
dfs_base, card_index, dfs_entry);
fh = open(fname, mode);
igt_require(fh >= 0);
return fh;
}
static int __read_seqno(uint32_t *seqno) static int __read_seqno(uint32_t *seqno)
{ {
int fh; int fh;
@ -302,7 +286,7 @@ static int __read_seqno(uint32_t *seqno)
char *p; char *p;
unsigned long int tmp; unsigned long int tmp;
fh = dfs_open(O_RDONLY); fh = igt_debugfs_open("i915_next_seqno", O_RDONLY);
r = read(fh, buf, sizeof(buf) - 1); r = read(fh, buf, sizeof(buf) - 1);
close(fh); close(fh);
@ -358,7 +342,7 @@ static int write_seqno(uint32_t seqno)
if (options.dontwrap) if (options.dontwrap)
return 0; return 0;
fh = dfs_open(O_RDWR); fh = igt_debugfs_open("i915_next_seqno", O_RDWR);
igt_assert(snprintf(buf, sizeof(buf), "0x%x", seqno) > 0); igt_assert(snprintf(buf, sizeof(buf), "0x%x", seqno) > 0);
r = write(fh, buf, strnlen(buf, sizeof(buf))); r = write(fh, buf, strnlen(buf, sizeof(buf)));