Re: [PATCH v3 09/10] tools: update hmm-test to support device coherent type
On 1/20/2022 12:14 AM, Alistair Popple wrote:
On Tuesday, 11 January 2022 9:32:00 AM AEDT Alex Sierra wrote:
Test cases such as migrate_fault and migrate_multiple, were modified to
explicit migrate from device to sys memory without the need of page
faults, when using device coherent type.
Snapshot test case updated to read memory device type first and based
on that, get the proper returned results migrate_ping_pong test case
Where is the migrate_ping_pong test? Did you perhaps forget to add it? :-)
Migration from device coherent to system is tested with migrate_multiple
too. Therefore,
I've removed migrate_ping_pong test. BTW, I just added the "number of
pages migrated"
checker after migrate from coherent to system on v4 series.
Regards,
Alejandro Sierra
added to test explicit migration from device to sys memory for both
private and coherent zone types.
Helpers to migrate from device to sys memory and vicerversa
were also added.
Signed-off-by: Alex Sierra
---
v2:
Set FIXTURE_VARIANT to add multiple device types to the FIXTURE. This
will run all the tests for each device type (private and coherent) in
case both existed during hmm-test driver probed.
---
tools/testing/selftests/vm/hmm-tests.c | 122 -
1 file changed, 101 insertions(+), 21 deletions(-)
diff --git a/tools/testing/selftests/vm/hmm-tests.c
b/tools/testing/selftests/vm/hmm-tests.c
index 864f126ffd78..8eb81dfba4b3 100644
--- a/tools/testing/selftests/vm/hmm-tests.c
+++ b/tools/testing/selftests/vm/hmm-tests.c
@@ -44,6 +44,14 @@ struct hmm_buffer {
int fd;
uint64_tcpages;
uint64_tfaults;
+ int zone_device_type;
+};
+
+enum {
+ HMM_PRIVATE_DEVICE_ONE,
+ HMM_PRIVATE_DEVICE_TWO,
+ HMM_COHERENCE_DEVICE_ONE,
+ HMM_COHERENCE_DEVICE_TWO,
};
#define TWOMEG (1 << 21)
@@ -60,6 +68,21 @@ FIXTURE(hmm)
unsigned intpage_shift;
};
+FIXTURE_VARIANT(hmm)
+{
+ int device_number;
+};
+
+FIXTURE_VARIANT_ADD(hmm, hmm_device_private)
+{
+ .device_number = HMM_PRIVATE_DEVICE_ONE,
+};
+
+FIXTURE_VARIANT_ADD(hmm, hmm_device_coherent)
+{
+ .device_number = HMM_COHERENCE_DEVICE_ONE,
+};
+
FIXTURE(hmm2)
{
int fd0;
@@ -68,6 +91,24 @@ FIXTURE(hmm2)
unsigned intpage_shift;
};
+FIXTURE_VARIANT(hmm2)
+{
+ int device_number0;
+ int device_number1;
+};
+
+FIXTURE_VARIANT_ADD(hmm2, hmm2_device_private)
+{
+ .device_number0 = HMM_PRIVATE_DEVICE_ONE,
+ .device_number1 = HMM_PRIVATE_DEVICE_TWO,
+};
+
+FIXTURE_VARIANT_ADD(hmm2, hmm2_device_coherent)
+{
+ .device_number0 = HMM_COHERENCE_DEVICE_ONE,
+ .device_number1 = HMM_COHERENCE_DEVICE_TWO,
+};
+
static int hmm_open(int unit)
{
char pathname[HMM_PATH_MAX];
@@ -81,12 +122,19 @@ static int hmm_open(int unit)
return fd;
}
+static bool hmm_is_coherent_type(int dev_num)
+{
+ return (dev_num >= HMM_COHERENCE_DEVICE_ONE);
+}
+
FIXTURE_SETUP(hmm)
{
self->page_size = sysconf(_SC_PAGE_SIZE);
self->page_shift = ffs(self->page_size) - 1;
- self->fd = hmm_open(0);
+ self->fd = hmm_open(variant->device_number);
+ if (self->fd < 0 && hmm_is_coherent_type(variant->device_number))
+ SKIP(exit(0), "DEVICE_COHERENT not available");
ASSERT_GE(self->fd, 0);
}
@@ -95,9 +143,11 @@ FIXTURE_SETUP(hmm2)
self->page_size = sysconf(_SC_PAGE_SIZE);
self->page_shift = ffs(self->page_size) - 1;
- self->fd0 = hmm_open(0);
+ self->fd0 = hmm_open(variant->device_number0);
+ if (self->fd0 < 0 && hmm_is_coherent_type(variant->device_number0))
+ SKIP(exit(0), "DEVICE_COHERENT not available");
ASSERT_GE(self->fd0, 0);
- self->fd1 = hmm_open(1);
+ self->fd1 = hmm_open(variant->device_number1);
ASSERT_GE(self->fd1, 0);
}
@@ -144,6 +194,7 @@ static int hmm_dmirror_cmd(int fd,
}
buffer->cpages = cmd.cpages;
buffer->faults = cmd.faults;
+ buffer->zone_device_type = cmd.zone_device_type;
return 0;
}
@@ -211,6 +262,20 @@ static void hmm_nanosleep(unsigned int n)
nanosleep(, NULL);
}
+static int hmm_migrate_sys_to_dev(int fd,
+ struct hmm_buffer *buffer,
+ unsigned long npages)
+{
+ return hmm_dmirror_cmd(fd, HMM_DMIRROR_MIGRATE_TO_DEV, buffer, npages);
+}
+
+static int hmm_migrate_dev_to_sys(int fd,
+ struct hmm_buffer *buffer,
+ unsigned long npages)
+{
+ return hmm_dmirror_cmd(fd, HMM_DMIRROR_MIGRATE_TO_SYS, buffer, npages);
+}
+
/*
* Simple NULL test of device open/close.
*/
@@ -875,7 +940,7 @@ TEST_F(hmm, migrate)
ptr[i] = i;
/* Migrate memory to device. */
- ret = hmm_dmirror_cmd(self->fd,
Re: [PATCH v3 09/10] tools: update hmm-test to support device coherent type
On Tuesday, 11 January 2022 9:32:00 AM AEDT Alex Sierra wrote:
> Test cases such as migrate_fault and migrate_multiple, were modified to
> explicit migrate from device to sys memory without the need of page
> faults, when using device coherent type.
>
> Snapshot test case updated to read memory device type first and based
> on that, get the proper returned results migrate_ping_pong test case
Where is the migrate_ping_pong test? Did you perhaps forget to add it? :-)
> added to test explicit migration from device to sys memory for both
> private and coherent zone types.
>
> Helpers to migrate from device to sys memory and vicerversa
> were also added.
>
> Signed-off-by: Alex Sierra
> ---
> v2:
> Set FIXTURE_VARIANT to add multiple device types to the FIXTURE. This
> will run all the tests for each device type (private and coherent) in
> case both existed during hmm-test driver probed.
> ---
> tools/testing/selftests/vm/hmm-tests.c | 122 -
> 1 file changed, 101 insertions(+), 21 deletions(-)
>
> diff --git a/tools/testing/selftests/vm/hmm-tests.c
> b/tools/testing/selftests/vm/hmm-tests.c
> index 864f126ffd78..8eb81dfba4b3 100644
> --- a/tools/testing/selftests/vm/hmm-tests.c
> +++ b/tools/testing/selftests/vm/hmm-tests.c
> @@ -44,6 +44,14 @@ struct hmm_buffer {
> int fd;
> uint64_tcpages;
> uint64_tfaults;
> + int zone_device_type;
> +};
> +
> +enum {
> + HMM_PRIVATE_DEVICE_ONE,
> + HMM_PRIVATE_DEVICE_TWO,
> + HMM_COHERENCE_DEVICE_ONE,
> + HMM_COHERENCE_DEVICE_TWO,
> };
>
> #define TWOMEG (1 << 21)
> @@ -60,6 +68,21 @@ FIXTURE(hmm)
> unsigned intpage_shift;
> };
>
> +FIXTURE_VARIANT(hmm)
> +{
> + int device_number;
> +};
> +
> +FIXTURE_VARIANT_ADD(hmm, hmm_device_private)
> +{
> + .device_number = HMM_PRIVATE_DEVICE_ONE,
> +};
> +
> +FIXTURE_VARIANT_ADD(hmm, hmm_device_coherent)
> +{
> + .device_number = HMM_COHERENCE_DEVICE_ONE,
> +};
> +
> FIXTURE(hmm2)
> {
> int fd0;
> @@ -68,6 +91,24 @@ FIXTURE(hmm2)
> unsigned intpage_shift;
> };
>
> +FIXTURE_VARIANT(hmm2)
> +{
> + int device_number0;
> + int device_number1;
> +};
> +
> +FIXTURE_VARIANT_ADD(hmm2, hmm2_device_private)
> +{
> + .device_number0 = HMM_PRIVATE_DEVICE_ONE,
> + .device_number1 = HMM_PRIVATE_DEVICE_TWO,
> +};
> +
> +FIXTURE_VARIANT_ADD(hmm2, hmm2_device_coherent)
> +{
> + .device_number0 = HMM_COHERENCE_DEVICE_ONE,
> + .device_number1 = HMM_COHERENCE_DEVICE_TWO,
> +};
> +
> static int hmm_open(int unit)
> {
> char pathname[HMM_PATH_MAX];
> @@ -81,12 +122,19 @@ static int hmm_open(int unit)
> return fd;
> }
>
> +static bool hmm_is_coherent_type(int dev_num)
> +{
> + return (dev_num >= HMM_COHERENCE_DEVICE_ONE);
> +}
> +
> FIXTURE_SETUP(hmm)
> {
> self->page_size = sysconf(_SC_PAGE_SIZE);
> self->page_shift = ffs(self->page_size) - 1;
>
> - self->fd = hmm_open(0);
> + self->fd = hmm_open(variant->device_number);
> + if (self->fd < 0 && hmm_is_coherent_type(variant->device_number))
> + SKIP(exit(0), "DEVICE_COHERENT not available");
> ASSERT_GE(self->fd, 0);
> }
>
> @@ -95,9 +143,11 @@ FIXTURE_SETUP(hmm2)
> self->page_size = sysconf(_SC_PAGE_SIZE);
> self->page_shift = ffs(self->page_size) - 1;
>
> - self->fd0 = hmm_open(0);
> + self->fd0 = hmm_open(variant->device_number0);
> + if (self->fd0 < 0 && hmm_is_coherent_type(variant->device_number0))
> + SKIP(exit(0), "DEVICE_COHERENT not available");
> ASSERT_GE(self->fd0, 0);
> - self->fd1 = hmm_open(1);
> + self->fd1 = hmm_open(variant->device_number1);
> ASSERT_GE(self->fd1, 0);
> }
>
> @@ -144,6 +194,7 @@ static int hmm_dmirror_cmd(int fd,
> }
> buffer->cpages = cmd.cpages;
> buffer->faults = cmd.faults;
> + buffer->zone_device_type = cmd.zone_device_type;
>
> return 0;
> }
> @@ -211,6 +262,20 @@ static void hmm_nanosleep(unsigned int n)
> nanosleep(, NULL);
> }
>
> +static int hmm_migrate_sys_to_dev(int fd,
> +struct hmm_buffer *buffer,
> +unsigned long npages)
> +{
> + return hmm_dmirror_cmd(fd, HMM_DMIRROR_MIGRATE_TO_DEV, buffer, npages);
> +}
> +
> +static int hmm_migrate_dev_to_sys(int fd,
> +struct hmm_buffer *buffer,
> +unsigned long npages)
> +{
> + return hmm_dmirror_cmd(fd, HMM_DMIRROR_MIGRATE_TO_SYS, buffer, npages);
> +}
> +
> /*
> * Simple NULL test of device open/close.
> */
> @@ -875,7 +940,7 @@ TEST_F(hmm, migrate)
> ptr[i] = i;
>
> /* Migrate memory to device. */
> - ret = hmm_dmirror_cmd(self->fd, HMM_DMIRROR_MIGRATE, buffer, npages);
> + ret = hmm_migrate_sys_to_dev(self->fd, buffer, npages);
> ASSERT_EQ(ret, 0);
>
