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kms_frontbuffer_tracking: don't keep debugfs open

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Make the code smaller and simpler, also ready for when we move
debugfs_read() to lib/.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2015-07-13 14:09:30 -03:00
parent 1048aa9aa5
commit 7f952bd976
1 changed files with 27 additions and 41 deletions
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68
tests/kms_frontbuffer_tracking.c
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@ -138,7 +138,6 @@ struct {
} drm;
struct {
int fd;
bool can_test;
bool supports_compressing;
@ -146,17 +145,14 @@ struct {
struct timespec last_action;
} fbc = {
.fd = -1,
.can_test = false,
.supports_last_action = false,
.supports_compressing = false,
};
struct {
int fd;
bool can_test;
} psr = {
.fd = -1,
.can_test = false,
};
@ -560,45 +556,47 @@ static bool set_mode_for_params(struct modeset_params *params)
return (rc == 0);
}
#define DEBUGFS_MSG_SIZE 256
static void get_debugfs_string(int fd, char *buf)
static void debugfs_read(const char *filename, char *buf, int buf_size)
{
ssize_t n_read;
FILE *file;
size_t n_read;
lseek(fd, 0, SEEK_SET);
file = igt_debugfs_fopen(filename, "r");
igt_assert(file);
n_read = fread(buf, 1, buf_size - 1, file);
igt_assert(n_read > 0);
igt_assert(feof(file));
n_read = read(fd, buf, DEBUGFS_MSG_SIZE -1);
igt_assert(n_read >= 0);
buf[n_read] = '\0';
igt_assert(fclose(file) == 0);
}
static bool fbc_is_enabled(void)
{
char buf[DEBUGFS_MSG_SIZE];
get_debugfs_string(fbc.fd, buf);
char buf[128];
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
return strstr(buf, "FBC enabled\n");
}
static bool psr_is_enabled(void)
{
char buf[DEBUGFS_MSG_SIZE];
get_debugfs_string(psr.fd, buf);
char buf[256];
debugfs_read("i915_edp_psr_status", buf, ARRAY_SIZE(buf));
return (strstr(buf, "\nActive: yes\n"));
}
static struct timespec fbc_get_last_action(void)
{
struct timespec ret = { 0, 0 };
char buf[DEBUGFS_MSG_SIZE];
char buf[128];
char *action;
ssize_t n_read;
get_debugfs_string(fbc.fd, buf);
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
action = strstr(buf, "\nLast action:");
igt_assert(action);
@ -644,10 +642,10 @@ static void fbc_update_last_action(void)
static void fbc_setup_last_action(void)
{
ssize_t n_read;
char buf[DEBUGFS_MSG_SIZE];
char buf[128];
char *action;
get_debugfs_string(fbc.fd, buf);
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
action = strstr(buf, "\nLast action:");
if (!action) {
@ -664,9 +662,9 @@ static void fbc_setup_last_action(void)
static bool fbc_is_compressing(void)
{
char buf[DEBUGFS_MSG_SIZE];
char buf[128];
get_debugfs_string(fbc.fd, buf);
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
return strstr(buf, "\nCompressing: yes\n") != NULL;
}
@ -677,9 +675,9 @@ static bool fbc_wait_for_compression(void)
static void fbc_setup_compressing(void)
{
char buf[DEBUGFS_MSG_SIZE];
char buf[128];
get_debugfs_string(fbc.fd, buf);
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
if (strstr(buf, "\nCompressing:"))
fbc.supports_compressing = true;
@ -1187,18 +1185,14 @@ static void teardown_crcs(void)
static bool fbc_supported_on_chipset(void)
{
char buf[DEBUGFS_MSG_SIZE];
get_debugfs_string(fbc.fd, buf);
char buf[128];
debugfs_read("i915_fbc_status", buf, ARRAY_SIZE(buf));
return !strstr(buf, "FBC unsupported on this chipset\n");
}
static void setup_fbc(void)
{
fbc.fd = igt_debugfs_open("i915_fbc_status", O_RDONLY);
igt_assert(fbc.fd >= 0);
if (!fbc_supported_on_chipset()) {
igt_info("Can't test FBC: not supported on this chipset\n");
return;
@ -1211,16 +1205,13 @@ static void setup_fbc(void)
static void teardown_fbc(void)
{
if (fbc.fd != -1)
close(fbc.fd);
}
static bool psr_sink_has_support(void)
{
char buf[DEBUGFS_MSG_SIZE];
get_debugfs_string(psr.fd, buf);
char buf[256];
debugfs_read("i915_edp_psr_status", buf, ARRAY_SIZE(buf));
return strstr(buf, "Sink_Support: yes\n");
}
@ -1232,9 +1223,6 @@ static void setup_psr(void)
return;
}
psr.fd = igt_debugfs_open("i915_edp_psr_status", O_RDONLY);
igt_assert(psr.fd >= 0);
if (!psr_sink_has_support()) {
igt_info("Can't test PSR: not supported by sink.\n");
return;
@ -1244,8 +1232,6 @@ static void setup_psr(void)
static void teardown_psr(void)
{
if (psr.fd != -1)
close(psr.fd);
}
static void setup_environment(void)