* [Qemu-devel] [PATCH] audio/hda: drop atomics
@ 2018-06-27 11:19 Gerd Hoffmann
2018-06-27 16:15 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 4+ messages in thread
From: Gerd Hoffmann @ 2018-06-27 11:19 UTC (permalink / raw)
To: qemu-devel; +Cc: Gerd Hoffmann
Doesn't build on 32bit clang. And because we run under qemu mutex
anyway they are not needed.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/audio/hda-codec.c | 31 +++++++++++++++----------------
1 file changed, 15 insertions(+), 16 deletions(-)
diff --git a/hw/audio/hda-codec.c b/hw/audio/hda-codec.c
index 8a8214de74..a4e24b919d 100644
--- a/hw/audio/hda-codec.c
+++ b/hw/audio/hda-codec.c
@@ -18,7 +18,6 @@
*/
#include "qemu/osdep.h"
-#include "qemu/atomic.h"
#include "hw/hw.h"
#include "hw/pci/pci.h"
#include "intel-hda.h"
@@ -212,7 +211,7 @@ static inline void hda_timer_sync_adjust(HDAAudioStream *st, int64_t target_pos)
}
trace_hda_audio_adjust(st->node->name, target_pos);
- atomic_fetch_add(&st->buft_start, corr);
+ st->buft_start += corr;
}
static void hda_audio_input_timer(void *opaque)
@@ -221,9 +220,9 @@ static void hda_audio_input_timer(void *opaque)
int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
- int64_t wpos = atomic_fetch_add(&st->wpos, 0);
- int64_t rpos = atomic_fetch_add(&st->rpos, 0);
+ int64_t buft_start = st->buft_start;
+ int64_t wpos = st->wpos;
+ int64_t rpos = st->rpos;
int64_t wanted_rpos = hda_bytes_per_second(st) * (now - buft_start)
/ NANOSECONDS_PER_SECOND;
@@ -245,7 +244,7 @@ static void hda_audio_input_timer(void *opaque)
}
rpos += chunk;
to_transfer -= chunk;
- atomic_fetch_add(&st->rpos, chunk);
+ st->rpos += chunk;
}
out_timer:
@@ -259,8 +258,8 @@ static void hda_audio_input_cb(void *opaque, int avail)
{
HDAAudioStream *st = opaque;
- int64_t wpos = atomic_fetch_add(&st->wpos, 0);
- int64_t rpos = atomic_fetch_add(&st->rpos, 0);
+ int64_t wpos = st->wpos;
+ int64_t rpos = st->rpos;
int64_t to_transfer = audio_MIN(B_SIZE - (wpos - rpos), avail);
@@ -272,7 +271,7 @@ static void hda_audio_input_cb(void *opaque, int avail)
uint32_t read = AUD_read(st->voice.in, st->buf + start, chunk);
wpos += read;
to_transfer -= read;
- atomic_fetch_add(&st->wpos, read);
+ st->wpos += read;
if (chunk != read) {
break;
}
@@ -285,9 +284,9 @@ static void hda_audio_output_timer(void *opaque)
int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
- int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
- int64_t wpos = atomic_fetch_add(&st->wpos, 0);
- int64_t rpos = atomic_fetch_add(&st->rpos, 0);
+ int64_t buft_start = st->buft_start;
+ int64_t wpos = st->wpos;
+ int64_t rpos = st->rpos;
int64_t wanted_wpos = hda_bytes_per_second(st) * (now - buft_start)
/ NANOSECONDS_PER_SECOND;
@@ -309,7 +308,7 @@ static void hda_audio_output_timer(void *opaque)
}
wpos += chunk;
to_transfer -= chunk;
- atomic_fetch_add(&st->wpos, chunk);
+ st->wpos += chunk;
}
out_timer:
@@ -323,8 +322,8 @@ static void hda_audio_output_cb(void *opaque, int avail)
{
HDAAudioStream *st = opaque;
- int64_t wpos = atomic_fetch_add(&st->wpos, 0);
- int64_t rpos = atomic_fetch_add(&st->rpos, 0);
+ int64_t wpos = st->wpos;
+ int64_t rpos = st->rpos;
int64_t to_transfer = audio_MIN(wpos - rpos, avail);
@@ -345,7 +344,7 @@ static void hda_audio_output_cb(void *opaque, int avail)
uint32_t written = AUD_write(st->voice.out, st->buf + start, chunk);
rpos += written;
to_transfer -= written;
- atomic_fetch_add(&st->rpos, written);
+ st->rpos += written;
if (chunk != written) {
break;
}
--
2.9.3
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] audio/hda: drop atomics
2018-06-27 11:19 [Qemu-devel] [PATCH] audio/hda: drop atomics Gerd Hoffmann
@ 2018-06-27 16:15 ` Philippe Mathieu-Daudé
2018-06-29 17:49 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 4+ messages in thread
From: Philippe Mathieu-Daudé @ 2018-06-27 16:15 UTC (permalink / raw)
To: Gerd Hoffmann, Richard Henderson; +Cc: qemu-devel
On 06/27/2018 08:19 AM, Gerd Hoffmann wrote:
> Doesn't build on 32bit clang. And because we run under qemu mutex
> anyway they are not needed.
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> hw/audio/hda-codec.c | 31 +++++++++++++++----------------
> 1 file changed, 15 insertions(+), 16 deletions(-)
>
> diff --git a/hw/audio/hda-codec.c b/hw/audio/hda-codec.c
> index 8a8214de74..a4e24b919d 100644
> --- a/hw/audio/hda-codec.c
> +++ b/hw/audio/hda-codec.c
> @@ -18,7 +18,6 @@
> */
>
> #include "qemu/osdep.h"
> -#include "qemu/atomic.h"
> #include "hw/hw.h"
> #include "hw/pci/pci.h"
> #include "intel-hda.h"
> @@ -212,7 +211,7 @@ static inline void hda_timer_sync_adjust(HDAAudioStream *st, int64_t target_pos)
> }
>
> trace_hda_audio_adjust(st->node->name, target_pos);
> - atomic_fetch_add(&st->buft_start, corr);
> + st->buft_start += corr;
> }
>
> static void hda_audio_input_timer(void *opaque)
> @@ -221,9 +220,9 @@ static void hda_audio_input_timer(void *opaque)
>
> int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
>
> - int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
> + int64_t buft_start = st->buft_start;
> + int64_t wpos = st->wpos;
> + int64_t rpos = st->rpos;
>
> int64_t wanted_rpos = hda_bytes_per_second(st) * (now - buft_start)
> / NANOSECONDS_PER_SECOND;
> @@ -245,7 +244,7 @@ static void hda_audio_input_timer(void *opaque)
> }
> rpos += chunk;
> to_transfer -= chunk;
> - atomic_fetch_add(&st->rpos, chunk);
> + st->rpos += chunk;
> }
>
> out_timer:
> @@ -259,8 +258,8 @@ static void hda_audio_input_cb(void *opaque, int avail)
> {
> HDAAudioStream *st = opaque;
>
> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
> + int64_t wpos = st->wpos;
> + int64_t rpos = st->rpos;
>
> int64_t to_transfer = audio_MIN(B_SIZE - (wpos - rpos), avail);
>
> @@ -272,7 +271,7 @@ static void hda_audio_input_cb(void *opaque, int avail)
> uint32_t read = AUD_read(st->voice.in, st->buf + start, chunk);
> wpos += read;
> to_transfer -= read;
> - atomic_fetch_add(&st->wpos, read);
> + st->wpos += read;
> if (chunk != read) {
> break;
> }
> @@ -285,9 +284,9 @@ static void hda_audio_output_timer(void *opaque)
>
> int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
>
> - int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
> + int64_t buft_start = st->buft_start;
> + int64_t wpos = st->wpos;
> + int64_t rpos = st->rpos;
>
> int64_t wanted_wpos = hda_bytes_per_second(st) * (now - buft_start)
> / NANOSECONDS_PER_SECOND;
> @@ -309,7 +308,7 @@ static void hda_audio_output_timer(void *opaque)
> }
> wpos += chunk;
> to_transfer -= chunk;
> - atomic_fetch_add(&st->wpos, chunk);
> + st->wpos += chunk;
> }
>
> out_timer:
> @@ -323,8 +322,8 @@ static void hda_audio_output_cb(void *opaque, int avail)
> {
> HDAAudioStream *st = opaque;
>
> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
> + int64_t wpos = st->wpos;
> + int64_t rpos = st->rpos;
>
> int64_t to_transfer = audio_MIN(wpos - rpos, avail);
>
> @@ -345,7 +344,7 @@ static void hda_audio_output_cb(void *opaque, int avail)
> uint32_t written = AUD_write(st->voice.out, st->buf + start, chunk);
> rpos += written;
> to_transfer -= written;
> - atomic_fetch_add(&st->rpos, written);
> + st->rpos += written;
> if (chunk != written) {
> break;
> }
>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] audio/hda: drop atomics
2018-06-27 16:15 ` Philippe Mathieu-Daudé
@ 2018-06-29 17:49 ` Philippe Mathieu-Daudé
2018-07-02 10:52 ` Peter Maydell
0 siblings, 1 reply; 4+ messages in thread
From: Philippe Mathieu-Daudé @ 2018-06-29 17:49 UTC (permalink / raw)
To: Gerd Hoffmann, Richard Henderson, Max Reitz, Peter Maydell
Cc: qemu-devel, Martin Schrodt
On 06/27/2018 01:15 PM, Philippe Mathieu-Daudé wrote:
> On 06/27/2018 08:19 AM, Gerd Hoffmann wrote:
>> Doesn't build on 32bit clang. And because we run under qemu mutex
>> anyway they are not needed.
>>
>> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
>
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Applying this patch as build fix on master would fix the mips/mipsel
host builds (also clang -m32 reported by Max). But there's no hurry.
>
>> ---
>> hw/audio/hda-codec.c | 31 +++++++++++++++----------------
>> 1 file changed, 15 insertions(+), 16 deletions(-)
>>
>> diff --git a/hw/audio/hda-codec.c b/hw/audio/hda-codec.c
>> index 8a8214de74..a4e24b919d 100644
>> --- a/hw/audio/hda-codec.c
>> +++ b/hw/audio/hda-codec.c
>> @@ -18,7 +18,6 @@
>> */
>>
>> #include "qemu/osdep.h"
>> -#include "qemu/atomic.h"
>> #include "hw/hw.h"
>> #include "hw/pci/pci.h"
>> #include "intel-hda.h"
>> @@ -212,7 +211,7 @@ static inline void hda_timer_sync_adjust(HDAAudioStream *st, int64_t target_pos)
>> }
>>
>> trace_hda_audio_adjust(st->node->name, target_pos);
>> - atomic_fetch_add(&st->buft_start, corr);
>> + st->buft_start += corr;
>> }
>>
>> static void hda_audio_input_timer(void *opaque)
>> @@ -221,9 +220,9 @@ static void hda_audio_input_timer(void *opaque)
>>
>> int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
>>
>> - int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
>> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
>> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
>> + int64_t buft_start = st->buft_start;
>> + int64_t wpos = st->wpos;
>> + int64_t rpos = st->rpos;
>>
>> int64_t wanted_rpos = hda_bytes_per_second(st) * (now - buft_start)
>> / NANOSECONDS_PER_SECOND;
>> @@ -245,7 +244,7 @@ static void hda_audio_input_timer(void *opaque)
>> }
>> rpos += chunk;
>> to_transfer -= chunk;
>> - atomic_fetch_add(&st->rpos, chunk);
>> + st->rpos += chunk;
>> }
>>
>> out_timer:
>> @@ -259,8 +258,8 @@ static void hda_audio_input_cb(void *opaque, int avail)
>> {
>> HDAAudioStream *st = opaque;
>>
>> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
>> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
>> + int64_t wpos = st->wpos;
>> + int64_t rpos = st->rpos;
>>
>> int64_t to_transfer = audio_MIN(B_SIZE - (wpos - rpos), avail);
>>
>> @@ -272,7 +271,7 @@ static void hda_audio_input_cb(void *opaque, int avail)
>> uint32_t read = AUD_read(st->voice.in, st->buf + start, chunk);
>> wpos += read;
>> to_transfer -= read;
>> - atomic_fetch_add(&st->wpos, read);
>> + st->wpos += read;
>> if (chunk != read) {
>> break;
>> }
>> @@ -285,9 +284,9 @@ static void hda_audio_output_timer(void *opaque)
>>
>> int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
>>
>> - int64_t buft_start = atomic_fetch_add(&st->buft_start, 0);
>> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
>> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
>> + int64_t buft_start = st->buft_start;
>> + int64_t wpos = st->wpos;
>> + int64_t rpos = st->rpos;
>>
>> int64_t wanted_wpos = hda_bytes_per_second(st) * (now - buft_start)
>> / NANOSECONDS_PER_SECOND;
>> @@ -309,7 +308,7 @@ static void hda_audio_output_timer(void *opaque)
>> }
>> wpos += chunk;
>> to_transfer -= chunk;
>> - atomic_fetch_add(&st->wpos, chunk);
>> + st->wpos += chunk;
>> }
>>
>> out_timer:
>> @@ -323,8 +322,8 @@ static void hda_audio_output_cb(void *opaque, int avail)
>> {
>> HDAAudioStream *st = opaque;
>>
>> - int64_t wpos = atomic_fetch_add(&st->wpos, 0);
>> - int64_t rpos = atomic_fetch_add(&st->rpos, 0);
>> + int64_t wpos = st->wpos;
>> + int64_t rpos = st->rpos;
>>
>> int64_t to_transfer = audio_MIN(wpos - rpos, avail);
>>
>> @@ -345,7 +344,7 @@ static void hda_audio_output_cb(void *opaque, int avail)
>> uint32_t written = AUD_write(st->voice.out, st->buf + start, chunk);
>> rpos += written;
>> to_transfer -= written;
>> - atomic_fetch_add(&st->rpos, written);
>> + st->rpos += written;
>> if (chunk != written) {
>> break;
>> }
>>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] audio/hda: drop atomics
2018-06-29 17:49 ` Philippe Mathieu-Daudé
@ 2018-07-02 10:52 ` Peter Maydell
0 siblings, 0 replies; 4+ messages in thread
From: Peter Maydell @ 2018-07-02 10:52 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Gerd Hoffmann, Richard Henderson, Max Reitz, QEMU Developers,
Martin Schrodt
On 29 June 2018 at 18:49, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> On 06/27/2018 01:15 PM, Philippe Mathieu-Daudé wrote:
>> On 06/27/2018 08:19 AM, Gerd Hoffmann wrote:
>>> Doesn't build on 32bit clang. And because we run under qemu mutex
>>> anyway they are not needed.
>>>
>>> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
>>
>> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>
> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
>
> Applying this patch as build fix on master would fix the mips/mipsel
> host builds (also clang -m32 reported by Max). But there's no hurry.
Thanks; applied to master as a build fix.
-- PMM
^ permalink raw reply [flat|nested] 4+ messages in thread
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2018-06-27 11:19 [Qemu-devel] [PATCH] audio/hda: drop atomics Gerd Hoffmann
2018-06-27 16:15 ` Philippe Mathieu-Daudé
2018-06-29 17:49 ` Philippe Mathieu-Daudé
2018-07-02 10:52 ` Peter Maydell
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