* [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
@ 2023-04-05 10:13 Hao Ge
2023-04-05 14:46 ` Sean Christopherson
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Hao Ge @ 2023-04-05 10:13 UTC (permalink / raw)
To: pbonzini, shuah, seanjc, dmatlack, coltonlewis, vipinsh
Cc: gehao, kvm, linux-kselftest, linux-kernel, gehao618
Close the "current_clocksource" file descriptor before
returning or exiting from stable_tsc_check_supported()
in vmx_nested_tsc_scaling_test
Signed-off-by: Hao Ge <gehao@kylinos.cn>
---
.../selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
index d427eb146bc5..fa03c8d1ce4e 100644
--- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
@@ -126,12 +126,16 @@ static void stable_tsc_check_supported(void)
goto skip_test;
if (fgets(buf, sizeof(buf), fp) == NULL)
- goto skip_test;
+ goto close_fp;
if (strncmp(buf, "tsc", sizeof(buf)))
- goto skip_test;
+ goto close_fp;
+ fclose(fp);
return;
+
+close_fp:
+ fclose(fp);
skip_test:
print_skip("Kernel does not use TSC clocksource - assuming that host TSC is not stable");
exit(KSFT_SKIP);
--
2.25.1
No virus found
Checked by Hillstone Network AntiVirus
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
2023-04-05 10:13 [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported() Hao Ge
@ 2023-04-05 14:46 ` Sean Christopherson
2023-04-06 2:56 ` gehao
2023-04-06 0:13 ` Sean Christopherson
2023-04-06 0:18 ` Sean Christopherson
2 siblings, 1 reply; 6+ messages in thread
From: Sean Christopherson @ 2023-04-05 14:46 UTC (permalink / raw)
To: Hao Ge
Cc: pbonzini, shuah, dmatlack, coltonlewis, vipinsh, kvm,
linux-kselftest, linux-kernel, gehao618
This is not a RESEND, it is a new version. From Documentation/process/submitting-patches.rst:
Don't add "RESEND" when you are submitting a modified version of your
patch or patch series - "RESEND" only applies to resubmission of a
patch or patch series which have not been modified in any way from the
previous submission.
And the "in any way" really does mean in _any_ way. E.g. if a patch is rebased,
the version needs to be bumped. RESEND should only ever be used when sending
literally the same patch/email file, e.g. if something went awry in the delivery
of the email, or you forgot to Cc the right people, tec.
On Wed, Apr 05, 2023, Hao Ge wrote:
> Close the "current_clocksource" file descriptor before
Wrap closer to ~75 chars, wrapping at ~55 is too aggressive.
> returning or exiting from stable_tsc_check_supported()
> in vmx_nested_tsc_scaling_test
Vipin provided his Reviewed-by, that should have been captured here. Please read
through Documentation/process/submitting-patches.rst, guidance on "using" the
various tags is also provided there. And if you have time, pretty much all of
Documentation/process/ is worth reading.
No need to send a new version, all of this is easy to fixup when applying.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
2023-04-05 10:13 [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported() Hao Ge
2023-04-05 14:46 ` Sean Christopherson
@ 2023-04-06 0:13 ` Sean Christopherson
2023-04-06 0:18 ` Sean Christopherson
2 siblings, 0 replies; 6+ messages in thread
From: Sean Christopherson @ 2023-04-06 0:13 UTC (permalink / raw)
To: Hao Ge
Cc: pbonzini, shuah, dmatlack, coltonlewis, vipinsh, kvm,
linux-kselftest, linux-kernel, gehao618
On Wed, Apr 05, 2023, Hao Ge wrote:
> Close the "current_clocksource" file descriptor before
> returning or exiting from stable_tsc_check_supported()
> in vmx_nested_tsc_scaling_test
>
> Signed-off-by: Hao Ge <gehao@kylinos.cn>
> ---
> .../selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
> index d427eb146bc5..fa03c8d1ce4e 100644
> --- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
> +++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c
> @@ -126,12 +126,16 @@ static void stable_tsc_check_supported(void)
> goto skip_test;
>
> if (fgets(buf, sizeof(buf), fp) == NULL)
> - goto skip_test;
> + goto close_fp;
>
> if (strncmp(buf, "tsc", sizeof(buf)))
> - goto skip_test;
> + goto close_fp;
>
> + fclose(fp);
> return;
> +
> +close_fp:
> + fclose(fp);
> skip_test:
> print_skip("Kernel does not use TSC clocksource - assuming that host TSC is not stable");
> exit(KSFT_SKIP);
Actually, this can be streamlined by having the helper return a bool and punting
the skip logic to TEST_REQUIRE. I'll still apply this patch first, but I'll post
a patch on top to yield:
static bool system_has_stable_tsc(void)
{
bool tsc_is_stable;
FILE *fp;
char buf[4];
fp = fopen("/sys/devices/system/clocksource/clocksource0/current_clocksource", "r");
if (fp == NULL)
return false;
tsc_is_stable = fgets(buf, sizeof(buf), fp) &&
!strncmp(buf, "tsc", sizeof(buf));
fclose(fp);
return tsc_is_stable;
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
2023-04-05 10:13 [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported() Hao Ge
2023-04-05 14:46 ` Sean Christopherson
2023-04-06 0:13 ` Sean Christopherson
@ 2023-04-06 0:18 ` Sean Christopherson
2 siblings, 0 replies; 6+ messages in thread
From: Sean Christopherson @ 2023-04-06 0:18 UTC (permalink / raw)
To: Sean Christopherson, pbonzini, shuah, dmatlack, coltonlewis,
vipinsh, Hao Ge
Cc: kvm, linux-kselftest, linux-kernel, gehao618
On Wed, 05 Apr 2023 18:13:50 +0800, Hao Ge wrote:
> Close the "current_clocksource" file descriptor before
> returning or exiting from stable_tsc_check_supported()
> in vmx_nested_tsc_scaling_test
>
>
Applied to kvm-x86 selftests, thanks!
[1/1] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
https://github.com/kvm-x86/linux/commit/771214507387
--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
2023-04-05 14:46 ` Sean Christopherson
@ 2023-04-06 2:56 ` gehao
2023-04-06 8:07 ` Hao Ge
0 siblings, 1 reply; 6+ messages in thread
From: gehao @ 2023-04-06 2:56 UTC (permalink / raw)
To: Sean Christopherson
Cc: pbonzini, shuah, dmatlack, coltonlewis, vipinsh, kvm,
linux-kselftest, linux-kernel, gehao618
在 4/5/23 22:46, Sean Christopherson 写道:
> This is not a RESEND, it is a new version. From Documentation/process/submitting-patches.rst:
>
> Don't add "RESEND" when you are submitting a modified version of your
> patch or patch series - "RESEND" only applies to resubmission of a
> patch or patch series which have not been modified in any way from the
> previous submission.
>
> And the "in any way" really does mean in _any_ way. E.g. if a patch is rebased,
> the version needs to be bumped. RESEND should only ever be used when sending
> literally the same patch/email file, e.g. if something went awry in the delivery
> of the email, or you forgot to Cc the right people, tec.
>
> On Wed, Apr 05, 2023, Hao Ge wrote:
>> Close the "current_clocksource" file descriptor before
> Wrap closer to ~75 chars, wrapping at ~55 is too aggressive.
>
>> returning or exiting from stable_tsc_check_supported()
>> in vmx_nested_tsc_scaling_test
>
> Vipin provided his Reviewed-by, that should have been captured here. Please read
> through Documentation/process/submitting-patches.rst, guidance on "using" the
> various tags is also provided there. And if you have time, pretty much all of
> Documentation/process/ is worth reading.
>
> No need to send a new version, all of this is easy to fixup when applying.
Thank you for your guidance,this has been very helpful to me for sunmitting
patches.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported()
2023-04-06 2:56 ` gehao
@ 2023-04-06 8:07 ` Hao Ge
0 siblings, 0 replies; 6+ messages in thread
From: Hao Ge @ 2023-04-06 8:07 UTC (permalink / raw)
To: Sean Christopherson
Cc: pbonzini, shuah, dmatlack, coltonlewis, vipinsh, kvm,
linux-kselftest, linux-kernel, gehao618
Sorry for bother yours, the computer has updated some configurations,
causing an issue with the email name,so correct it.
On 4/6/23 10:56, gehao@kylinos.cn wrote:
> 在 4/5/23 22:46, Sean Christopherson 写道:
>
>> This is not a RESEND, it is a new version. From
>> Documentation/process/submitting-patches.rst:
>>
>> Don't add "RESEND" when you are submitting a modified version of your
>> patch or patch series - "RESEND" only applies to resubmission of a
>> patch or patch series which have not been modified in any way from
>> the
>> previous submission.
>>
>> And the "in any way" really does mean in _any_ way. E.g. if a patch
>> is rebased,
>> the version needs to be bumped. RESEND should only ever be used when
>> sending
>> literally the same patch/email file, e.g. if something went awry in
>> the delivery
>> of the email, or you forgot to Cc the right people, tec.
>>
>> On Wed, Apr 05, 2023, Hao Ge wrote:
>>> Close the "current_clocksource" file descriptor before
>> Wrap closer to ~75 chars, wrapping at ~55 is too aggressive.
>>
>>> returning or exiting from stable_tsc_check_supported()
>>> in vmx_nested_tsc_scaling_test
>>
>> Vipin provided his Reviewed-by, that should have been captured here.
>> Please read
>> through Documentation/process/submitting-patches.rst, guidance on
>> "using" the
>> various tags is also provided there. And if you have time, pretty
>> much all of
>> Documentation/process/ is worth reading.
>>
>> No need to send a new version, all of this is easy to fixup when
>> applying.
>
> Thank you for your guidance,this has been very helpful to me for
> submitting
>
> patches.
>
>
Thanks
Best Regards
Hao
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-04-06 8:08 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-04-05 10:13 [RESEND PATCH] kvm/selftests: Close opened file descriptor in stable_tsc_check_supported() Hao Ge
2023-04-05 14:46 ` Sean Christopherson
2023-04-06 2:56 ` gehao
2023-04-06 8:07 ` Hao Ge
2023-04-06 0:13 ` Sean Christopherson
2023-04-06 0:18 ` Sean Christopherson
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