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lib: add igt_debugfs_search

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Add igt_debugfs_search to search each line in a debugfs file for a
specified substring.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
This commit is contained in:
Thomas Wood 2015-09-23 16:52:24 +01:00
parent 1ea96af776
commit 6c89204da7
4 changed files with 35 additions and 45 deletions
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31
lib/igt_debugfs.c
View File

@ -212,6 +212,37 @@ void __igt_debugfs_read(const char *filename, char *buf, int buf_size)
igt_assert(fclose(file) == 0);
}
/**
* igt_debugfs_search:
* @filename: file name
* @substring: string to search for in @filename
*
* Searches each line in @filename for the substring specified in @substring.
*
* Returns: True if the @substring is found to occur in @filename
*/
bool igt_debugfs_search(const char *filename, const char *substring)
{
FILE *file;
size_t n = 0;
char *line = NULL;
bool matched = false;
file = igt_debugfs_fopen(filename, O_RDONLY);
igt_assert(file);
while (getline(&line, &n, file) >= 0) {
matched = (strstr(line, substring) != NULL);
if (matched)
break;
}
free(line);
fclose(file);
return matched;
}
/*
* Pipe CRC
*/

1
lib/igt_debugfs.h
View File

@ -35,6 +35,7 @@ int igt_debugfs_open(const char *filename, int mode);
FILE *igt_debugfs_fopen(const char *filename,
const char *mode);
void __igt_debugfs_read(const char *filename, char *buf, int buf_size);
bool igt_debugfs_search(const char *filename, const char *substring);
/**
* igt_debugfs_read:

35
tests/gem_ppgtt.c
View File

@ -266,37 +266,6 @@ static void flink_and_close(void)
close(fd2);
}
static bool grep_name(const char *fname, const char *match)
{
int fd;
FILE *fh;
size_t n = 0;
char *line = NULL;
char *matched = NULL;
fd = igt_debugfs_open(fname, O_RDONLY);
igt_assert(fd >= 0);
fh = fdopen(fd, "r");
igt_assert(fh);
while (getline(&line, &n, fh) >= 0) {
matched = strstr(line, match);
if (line) {
free(line);
line = NULL;
}
if (matched)
break;
}
if (line)
free(line);
fclose(fh);
return matched != NULL;
}
static void flink_and_exit(void)
{
uint32_t fd, fd2;
@ -323,7 +292,7 @@ static void flink_and_exit(void)
gem_sync(fd2, flinked_bo);
/* Verify looking for string works OK. */
matched = grep_name("i915_gem_gtt", match);
matched = igt_debugfs_search("i915_gem_gtt", match);
igt_assert_eq(matched, true);
gem_close(fd2, flinked_bo);
@ -338,7 +307,7 @@ retry:
/* The flinked bo VMA should have been cleared now, so list of VMAs
* in debugfs should not contain the one for the imported object.
*/
matched = grep_name("i915_gem_gtt", match);
matched = igt_debugfs_search("i915_gem_gtt", match);
if (matched && retry++ < retries)
goto retry;

13
tests/gem_tiled_swapping.c
View File

@ -157,19 +157,8 @@ static void thread_fini(struct thread *t)
static void check_memory_layout(void)
{
FILE *tiling_debugfs_file;
char *line = NULL;
size_t sz = 0;
tiling_debugfs_file = igt_debugfs_fopen("i915_swizzle_info", "r");
igt_assert(tiling_debugfs_file);
while (getline(&line, &sz, tiling_debugfs_file) > 0) {
if (strstr(line, "L-shaped") == NULL)
continue;
if (igt_debugfs_search("i915_swizzle_info", "L-shaped"))
igt_skip("L-shaped memory configuration detected\n");
}
igt_debug("normal memory configuration detected, continuing\n");
}