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Remove I/O priority. It is harmful when used with the new file code.

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HAVE_IO_PRIORITY was defined for native targets with dircache.

It is already effectively disabled for the most part since dircache no
longer lowers its thread's I/O priority. It existed primarily for the
aforementioned configuration.

Change-Id: Ia04935305397ba14df34647c8ea29c2acaea92aa
This commit is contained in:
Michael Sevakis 2014-08-30 11:28:50 -04:00
parent 5d31d3c3bc
commit 5b08f1a5b9
9 changed files with 0 additions and 121 deletions
Download patch file Download diff file Expand all files Collapse all files

9
apps/buffering.c
View file

@ -1572,15 +1572,6 @@ size_t buf_get_watermark(void)
return BUF_WATERMARK;
}
#ifdef HAVE_IO_PRIORITY
void buf_back_off_storage(bool back_off)
{
int priority = back_off ?
IO_PRIORITY_BACKGROUND : IO_PRIORITY_IMMEDIATE;
thread_set_io_priority(buffering_thread_id, priority);
}
#endif
/** -- buffer thread helpers -- **/
static void shrink_buffer_inner(struct memory_handle *h)
{

3
apps/buffering.h
View file

@ -111,9 +111,6 @@ size_t buf_length(void);
size_t buf_used(void);
bool buf_pin_handle(int handle_id, bool pin);
bool buf_signal_handle(int handle_id, bool signal);
#ifdef HAVE_IO_PRIORITY
void buf_back_off_storage(bool back_off);
#endif
/* Settings */
void buf_set_watermark(size_t bytes);

8
apps/codec_thread.c
View file

@ -470,15 +470,7 @@ static void load_codec(const struct codec_load_info *ev_data)
/* Either not a valid handle or the buffer method failed */
const char *codec_fn = get_codec_filename(data.afmt);
if (codec_fn)
{
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(true);
#endif
status = codec_load_file(codec_fn, &ci);
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(false);
#endif
}
}
/* Types must agree */

13
apps/playback.c
View file

@ -1560,9 +1560,6 @@ static bool audio_load_cuesheet(struct track_info *info,
int hid = ERR_UNSUPPORTED_TYPE;
struct cuesheet_file cue_file;
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(true);
#endif
if (look_for_cuesheet_file(track_id3, &cue_file))
{
hid = bufalloc(NULL, sizeof (struct cuesheet), TYPE_CUESHEET);
@ -1586,9 +1583,6 @@ static bool audio_load_cuesheet(struct track_info *info,
}
}
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(false);
#endif
if (hid == ERR_BUFFER_FULL)
{
logf("buffer is full for now (%s)", __func__);
@ -1627,10 +1621,6 @@ static bool audio_load_albumart(struct track_info *info,
memset(&user_data, 0, sizeof(user_data));
user_data.dim = &albumart_slots[i].dim;
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(true);
#endif
/* We can only decode jpeg for embedded AA */
if (track_id3->has_embedded_albumart && track_id3->albumart.type == AA_TYPE_JPG)
{
@ -1651,9 +1641,6 @@ static bool audio_load_albumart(struct track_info *info,
}
}
#ifdef HAVE_IO_PRIORITY
buf_back_off_storage(false);
#endif
if (hid == ERR_BUFFER_FULL)
{
logf("buffer is full for now (%s)", __func__);

4
firmware/export/config.h
View file

@ -1196,10 +1196,6 @@ Lyre prototype 1 */
#define HAVE_PLUGIN_CHECK_OPEN_CLOSE
#endif
#if defined(HAVE_DIRCACHE) && (CONFIG_PLATFORM & PLATFORM_NATIVE)
#define HAVE_IO_PRIORITY
#endif
#if defined(CPU_COLDIRE) || CONFIG_CPU == IMX31L
/* Can record and play simultaneously */
#define HAVE_PCM_FULL_DUPLEX

5
firmware/kernel/include/thread.h
View file

@ -169,11 +169,6 @@ int thread_set_priority(unsigned int thread_id, int priority);
int thread_get_priority(unsigned int thread_id);
#endif /* HAVE_PRIORITY_SCHEDULING */
#ifdef HAVE_IO_PRIORITY
void thread_set_io_priority(unsigned int thread_id, int io_priority);
int thread_get_io_priority(unsigned int thread_id);
#endif /* HAVE_IO_PRIORITY */
#if NUM_CORES > 1
unsigned int switch_core(unsigned int new_core);
#endif

3
firmware/kernel/thread-internal.h
View file

@ -134,9 +134,6 @@ struct thread_entry
#ifdef HAVE_SCHEDULER_BOOSTCTRL
unsigned char cpu_boost; /* CPU frequency boost flag */
#endif
#ifdef HAVE_IO_PRIORITY
unsigned char io_priority;
#endif
};
/* Thread ID, 32 bits = |VVVVVVVV|VVVVVVVV|VVVVVVVV|SSSSSSSS| */

18
firmware/kernel/thread.c
View file

@ -367,10 +367,6 @@ static void new_thread_base_init(struct thread_entry *thread,
#ifdef HAVE_SCHEDULER_BOOSTCTRL
thread->cpu_boost = 0;
#endif
#ifdef HAVE_IO_PRIORITY
/* Default to high (foreground) priority */
thread->io_priority = IO_PRIORITY_IMMEDIATE;
#endif
}
/*---------------------------------------------------------------------------
@ -1421,20 +1417,6 @@ int thread_get_priority(unsigned int thread_id)
}
#endif /* HAVE_PRIORITY_SCHEDULING */
#ifdef HAVE_IO_PRIORITY
int thread_get_io_priority(unsigned int thread_id)
{
struct thread_entry *thread = __thread_id_entry(thread_id);
return thread->io_priority;
}
void thread_set_io_priority(unsigned int thread_id,int io_priority)
{
struct thread_entry *thread = __thread_id_entry(thread_id);
thread->io_priority = io_priority;
}
#endif
/*---------------------------------------------------------------------------
* Starts a frozen thread - similar semantics to wakeup_thread except that
* the thread is on no scheduler or wakeup queue at all. It exists simply by

58
firmware/storage.c
View file

@ -33,63 +33,9 @@ static unsigned int storage_drivers[NUM_DRIVES];
static unsigned int num_drives;
#endif
#ifdef HAVE_IO_PRIORITY
/* Same for flash? */
#define STORAGE_MINIMUM_IDLE_TIME (HZ/10)
#define STORAGE_DELAY_UNIT (HZ/20)
static unsigned int storage_last_thread[NUM_DRIVES];
static unsigned int storage_last_activity[NUM_DRIVES];
static bool storage_should_wait(int drive, int prio)
{
int other_prio = thread_get_io_priority(storage_last_thread[drive]);
if(TIME_BEFORE(current_tick,storage_last_activity[drive]+STORAGE_MINIMUM_IDLE_TIME))
{
if(prio<=other_prio)
{
/* There is another active thread, but we have lower priority */
return false;
}
else
{
/* There is another active thread, but it has lower priority */
return true;
}
}
else
{
/* There's nothing going on anyway */
return false;
}
}
static void storage_wait_turn(IF_MD_NONVOID(int drive))
{
#ifndef HAVE_MULTIDRIVE
int drive=0;
#endif
int my_prio = thread_get_io_priority(thread_self());
int loops=my_prio;
while(storage_should_wait(drive, my_prio) && (loops--)>=0)
{
sleep(STORAGE_DELAY_UNIT);
}
storage_last_thread[drive] = thread_self();
storage_last_activity[drive] = current_tick;
}
#endif
int storage_read_sectors(IF_MD(int drive,) unsigned long start, int count,
void* buf)
{
#ifdef HAVE_IO_PRIORITY
storage_wait_turn(IF_MD(drive));
#endif
#ifdef CONFIG_STORAGE_MULTI
int driver=(storage_drivers[drive] & DRIVER_MASK)>>DRIVER_OFFSET;
int ldrive=(storage_drivers[drive] & DRIVE_MASK)>>DRIVE_OFFSET;
@ -132,10 +78,6 @@ int storage_read_sectors(IF_MD(int drive,) unsigned long start, int count,
int storage_write_sectors(IF_MD(int drive,) unsigned long start, int count,
const void* buf)
{
#ifdef HAVE_IO_PRIORITY
storage_wait_turn(IF_MD(drive));
#endif
#ifdef CONFIG_STORAGE_MULTI
int driver=(storage_drivers[drive] & DRIVER_MASK)>>DRIVER_OFFSET;
int ldrive=(storage_drivers[drive] & DRIVE_MASK)>>DRIVE_OFFSET;