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Wed, 27 May 2020 08:41:07 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3077A5204F; Wed, 27 May 2020 08:41:07 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.52.97]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id C6C6952063; Wed, 27 May 2020 08:41:06 +0000 (GMT) Subject: Re: [PATCH v3 2/9] pc-bios: s390x: Consolidate timing functions into time.h To: Christian Borntraeger , qemu-devel@nongnu.org References: <20200527074920.43669-1-frankja@linux.ibm.com> <20200527074920.43669-3-frankja@linux.ibm.com> From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; prefer-encrypt=mutual; keydata= mQINBFubpD4BEADX0uhkRhkj2AVn7kI4IuPY3A8xKat0ihuPDXbynUC77mNox7yvK3X5QBO6 qLqYr+qrG3buymJJRD9xkp4mqgasHdB5WR9MhXWKH08EvtvAMkEJLnqxgbqf8td3pCQ2cEpv 15mH49iKSmlTcJ+PvJpGZcq/jE42u9/0YFHhozm8GfQdb9SOI/wBSsOqcXcLTUeAvbdqSBZe zuMRBivJQQI1esD9HuADmxdE7c4AeMlap9MvxvUtWk4ZJ/1Z3swMVCGzZb2Xg/9jZpLsyQzb lDbbTlEeyBACeED7DYLZI3d0SFKeJZ1SUyMmSOcr9zeSh4S4h4w8xgDDGmeDVygBQZa1HaoL Esb8Y4avOYIgYDhgkCh0nol7XQ5i/yKLtnNThubAcxNyryw1xSstnKlxPRoxtqTsxMAiSekk 0m3WJwvwd1s878HrQNK0orWd8BzzlSswzjNfQYLF466JOjHPWFOok9pzRs+ucrs6MUwDJj0S cITWU9Rxb04XyigY4XmZ8dywaxwi2ZVTEg+MD+sPmRrTw+5F+sU83cUstuymF3w1GmyofgsU Z+/ldjToHnq21MNa1wx0lCEipCCyE/8K9B9bg9pUwy5lfx7yORP3JuAUfCYb8DVSHWBPHKNj HTOLb2g2UT65AjZEQE95U2AY9iYm5usMqaWD39pAHfhC09/7NQARAQABtCVKYW5vc2NoIEZy YW5rIDxmcmFua2phQGxpbnV4LmlibS5jb20+iQI3BBMBCAAhBQJbm6Q+AhsjBQsJCAcCBhUI CQoLAgQWAgMBAh4BAheAAAoJEONU5rjiOLn4p9gQALjkdj5euJVI2nNT3/IAxAhQSmRhPEt0 AmnCYnuTcHRWPujNr5kqgtyER9+EMQ0ZkX44JU2q7OWxTdSNSAN/5Z7qmOR9JySvDOf4d3mS bMB5zxL9d8SbnSs1uW96H9ZBTlTQnmLfsiM9TetAjSrR8nUmjGhe2YUhJLR1v1LguME+YseT eXnLzIzqqpu311/eYiiIGcmaOjPCE+vFjcXL5oLnGUE73qSYiujwhfPCCUK0850o1fUAYq5p CNBCoKT4OddZR+0itKc/cT6NwEDwdokeg0+rAhxb4Rv5oFO70lziBplEjOxu3dqgIKbHbjza EXTb+mr7VI9O4tTdqrwJo2q9zLqqOfDBi7NDvZFLzaCewhbdEpDYVu6/WxprAY94hY3F4trT rQMHJKQENtF6ZTQc9fcT5I3gAmP+OEvDE5hcTALpWm6Z6SzxO7gEYCnF+qGXqp8sJVrweMub UscyLqHoqdZC2UG4LQ1OJ97nzDpIRe0g6oJ9ZIYHKmfw5jjwH6rASTld5MFWajWdNsqK15k/ RZnHAGICKVIBOBsq26m4EsBlfCdt3b/6emuBjUXR1pyjHMz2awWzCq6/6OWs5eANZ0sdosNq dq2v0ULYTazJz2rlCXV89qRa7ukkNwdBSZNEwsD4eEMicj1LSrqWDZMAALw50L4jxaMD7lPL jJbauQINBFubpD4BEADAcUTRqXF/aY53OSH7IwIK9lFKxIm0IoFkOEh7LMfp7FGzaP7ANrZd cIzhZi38xyOkcaFY+npGEWvko7rlIAn0JpBO4x3hfhmhBD/WSY8LQIFQNNjEm3vzrMo7b9Jb JAqQxfbURY3Dql3GUzeWTG9uaJ00u+EEPlY8zcVShDltIl5PLih20e8xgTnNzx5c110lQSu0 iZv2lAE6DM+2bJQTsMSYiwKlwTuv9LI9Chnoo6+tsN55NqyMxYqJgElk3VzlTXSr3+rtSCwf tq2cinETbzxc1XuhIX6pu/aCGnNfuEkM34b7G1D6CPzDMqokNFbyoO6DQ1+fW6c5gctXg/lZ 602iEl4C4rgcr3+EpfoPUWzKeM8JXv5Kpq4YDxhvbitr8Dm8gr38+UKFZKlWLlwhQ56r/zAU v6LIsm11GmFs2/cmgD1bqBTNHHcTWwWtRTLgmnqJbVisMJuYJt4KNPqphTWsPY8SEtbufIlY HXOJ2lqUzOReTrie2u0qcSvGAbSfec9apTFl2Xko/ddqPcZMpKhBiXmY8tJzSPk3+G4tqur4 6TYAm5ouitJsgAR61Cu7s+PNuq/pTLDhK+6/Njmc94NGBcRA4qTuysEGE79vYWP2oIAU4Fv6 gqaWHZ4MEI2XTqH8wiwzPdCQPYsSE0fXWiYu7ObeErT6iLSTZGx4rQARAQABiQIfBBgBCAAJ BQJbm6Q+AhsMAAoJEONU5rjiOLn4DDEP/RuyckW65SZcPG4cMfNgWxZF8rVjeVl/9PBfy01K 8R0hajU40bWtXSMiby7j0/dMjz99jN6L+AJHJvrLz4qYRzn2Ys843W+RfXj62Zde4YNBE5SL jJweRCbMWKaJLj6499fctxTyeb9+AMLQS4yRSwHuAZLmAb5AyCW1gBcTWZb8ON5BmWnRqeGm IgC1EvCnHy++aBnHTn0m+zV89BhTLTUal35tcjUFwluBY39R2ux/HNlBO1GY3Z+WYXhBvq7q katThLjaQSmnOrMhzqYmdShP1leFTVbzXUUIYv/GbynO/YrL2gaQpaP1bEUEi8lUAfXJbEWG dnHFkciryi092E8/9j89DJg4mmZqOau7TtUxjRMlBcIliXkzSLUk+QvD4LK1kWievJse4mte FBdkWHfP4BH/+8DxapRcG1UAheSnSRQ5LiO50annOB7oXF+vgKIaie2TBfZxQNGAs3RQ+bga DchCqFm5adiSP5+OT4NjkKUeGpBe/aRyQSle/RropTgCi85pje/juYEn2P9UAgkfBJrOHvQ9 Z+2Sva8FRd61NJLkCJ4LFumRn9wQlX2icFbi8UDV3do0hXJRRYTWCxrHscMhkrFWLhYiPF4i phX7UNdOWBQ90qpHyAxHmDazdo27gEjfvsgYMdveKknEOTEb5phwxWgg7BcIDoJf9UMC Message-ID: Date: Wed, 27 May 2020 10:41:06 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="ATvfKllMZTOh5D4BHCrfEs4FAZeip3Itj" X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-05-27_02:2020-05-26, 2020-05-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 cotscore=-2147483648 impostorscore=0 mlxscore=0 lowpriorityscore=0 spamscore=0 suspectscore=0 bulkscore=0 adultscore=0 phishscore=0 clxscore=1015 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005270062 Received-SPF: pass client-ip=148.163.158.5; envelope-from=frankja@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/27 03:49:35 X-ACL-Warn: Detected OS = Linux 3.x [generic] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, KHOP_DYNAMIC=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, cohuck@redhat.com, thuth@redhat.com, david@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --ATvfKllMZTOh5D4BHCrfEs4FAZeip3Itj Content-Type: multipart/mixed; boundary="vAmZSzG6F8USlYihHfgj3Vb7Q403Fphu4" --vAmZSzG6F8USlYihHfgj3Vb7Q403Fphu4 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 5/27/20 10:36 AM, Christian Borntraeger wrote: >=20 >=20 > On 27.05.20 09:49, Janosch Frank wrote: >> Let's consolidate timing related functions into one header. >> >> Signed-off-by: Janosch Frank >> --- >> pc-bios/s390-ccw/menu.c | 1 + >> pc-bios/s390-ccw/netmain.c | 15 +++------------ >> pc-bios/s390-ccw/s390-ccw.h | 2 -- >> pc-bios/s390-ccw/time.h | 23 +++++++++++++++++++++++ >=20 > what happened to Thomas comment about a header with the same name from = SLOF. > I think it is safer to renamme this one to s390-time.h? I extensively talked with Thomas about that on IRC and it doesn't seem to be a problem right now. Since I got no answer to my mail asking if s390-time.h would be better and he said I don't need to change it when it works, I just left it like it was and waited for more comments. >=20 >> pc-bios/s390-ccw/virtio-net.c | 1 + >> pc-bios/s390-ccw/virtio-scsi.c | 1 + >> pc-bios/s390-ccw/virtio.c | 18 +++--------------- >> 7 files changed, 32 insertions(+), 29 deletions(-) >> create mode 100644 pc-bios/s390-ccw/time.h >> >> diff --git a/pc-bios/s390-ccw/menu.c b/pc-bios/s390-ccw/menu.c >> index ce3815b201..7925c33248 100644 >> --- a/pc-bios/s390-ccw/menu.c >> +++ b/pc-bios/s390-ccw/menu.c >> @@ -12,6 +12,7 @@ >> #include "libc.h" >> #include "s390-ccw.h" >> #include "sclp.h" >> +#include "time.h" >> =20 >> #define KEYCODE_NO_INP '\0' >> #define KEYCODE_ESCAPE '\033' >> diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c >> index 309ffa30d9..73def8de4f 100644 >> --- a/pc-bios/s390-ccw/netmain.c >> +++ b/pc-bios/s390-ccw/netmain.c >> @@ -35,6 +35,7 @@ >> #include "s390-ccw.h" >> #include "cio.h" >> #include "virtio.h" >> +#include "time.h" >> =20 >> #define DEFAULT_BOOT_RETRIES 10 >> #define DEFAULT_TFTP_RETRIES 20 >> @@ -57,24 +58,14 @@ static SubChannelId net_schid =3D { .one =3D 1 }; >> static uint8_t mac[6]; >> static uint64_t dest_timer; >> =20 >> -static uint64_t get_timer_ms(void) >> -{ >> - uint64_t clk; >> - >> - asm volatile(" stck %0 " : : "Q"(clk) : "memory"); >> - >> - /* Bit 51 is incremented each microsecond */ >> - return (clk >> (63 - 51)) / 1000; >> -} >> - >> void set_timer(int val) >> { >> - dest_timer =3D get_timer_ms() + val; >> + dest_timer =3D get_time_ms() + val; >> } >> =20 >> int get_timer(void) >> { >> - return dest_timer - get_timer_ms(); >> + return dest_timer - get_time_ms(); >> } >> =20 >> int get_sec_ticks(void) >> diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h= >> index 21f27e7990..9514b76596 100644 >> --- a/pc-bios/s390-ccw/s390-ccw.h >> +++ b/pc-bios/s390-ccw/s390-ccw.h >> @@ -74,8 +74,6 @@ unsigned long virtio_load_direct(ulong rec_list1, ul= ong rec_list2, >> bool virtio_is_supported(SubChannelId schid); >> void virtio_blk_setup_device(SubChannelId schid); >> int virtio_read(ulong sector, void *load_addr); >> -u64 get_clock(void); >> -ulong get_second(void); >> =20 >> /* bootmap.c */ >> void zipl_load(void); >> diff --git a/pc-bios/s390-ccw/time.h b/pc-bios/s390-ccw/time.h >> new file mode 100644 >> index 0000000000..ed6d982371 >> --- /dev/null >> +++ b/pc-bios/s390-ccw/time.h >> @@ -0,0 +1,23 @@ >> +#ifndef TIME_H >> +#define TIME_H >> + >> +static inline u64 get_clock(void) >> +{ >> + u64 r; >> + >> + asm volatile("stck %0" : "=3DQ" (r) : : "cc"); >> + return r; >> +} >> + >> +static inline u64 get_time_ms(void) >> +{ >> + /* Bit 51 is incremented each microsecond */ >> + return (get_clock() >> 12) / 1000; >> +} >> + >> +static inline u64 get_time_seconds(void) >> +{ >> + return get_time_ms() / 1000; >> +} >> + >> +#endif >> diff --git a/pc-bios/s390-ccw/virtio-net.c b/pc-bios/s390-ccw/virtio-n= et.c >> index ff7f4dad25..4de03728bb 100644 >> --- a/pc-bios/s390-ccw/virtio-net.c >> +++ b/pc-bios/s390-ccw/virtio-net.c >> @@ -19,6 +19,7 @@ >> #include >> #include "s390-ccw.h" >> #include "virtio.h" >> +#include "time.h" >> =20 >> #ifndef DEBUG_VIRTIO_NET >> #define DEBUG_VIRTIO_NET 0 >> diff --git a/pc-bios/s390-ccw/virtio-scsi.c b/pc-bios/s390-ccw/virtio-= scsi.c >> index 4fe4b9d261..0620651da8 100644 >> --- a/pc-bios/s390-ccw/virtio-scsi.c >> +++ b/pc-bios/s390-ccw/virtio-scsi.c >> @@ -14,6 +14,7 @@ >> #include "virtio.h" >> #include "scsi.h" >> #include "virtio-scsi.h" >> +#include "time.h" >> =20 >> static ScsiDevice default_scsi_device; >> static VirtioScsiCmdReq req; >> diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c >> index fb40ca9828..43717b83d7 100644 >> --- a/pc-bios/s390-ccw/virtio.c >> +++ b/pc-bios/s390-ccw/virtio.c >> @@ -15,6 +15,7 @@ >> #include "virtio-scsi.h" >> #include "bswap.h" >> #include "helper.h" >> +#include "time.h" >> =20 >> #define VRING_WAIT_REPLY_TIMEOUT 30 >> =20 >> @@ -157,19 +158,6 @@ void vring_send_buf(VRing *vr, void *p, int len, = int flags) >> } >> } >> =20 >> -u64 get_clock(void) >> -{ >> - u64 r; >> - >> - asm volatile("stck %0" : "=3DQ" (r) : : "cc"); >> - return r; >> -} >> - >> -ulong get_second(void) >> -{ >> - return (get_clock() >> 12) / 1000000; >> -} >> - >> int vr_poll(VRing *vr) >> { >> if (vr->used->idx =3D=3D vr->used_idx) { >> @@ -194,7 +182,7 @@ int vr_poll(VRing *vr) >> */ >> int vring_wait_reply(void) >> { >> - ulong target_second =3D get_second() + vdev.wait_reply_timeout; >> + ulong target_second =3D get_time_seconds() + vdev.wait_reply_time= out; >> =20 >> /* Wait for any queue to be updated by the host */ >> do { >> @@ -207,7 +195,7 @@ int vring_wait_reply(void) >> if (r) { >> return 0; >> } >> - } while (!vdev.wait_reply_timeout || (get_second() < target_secon= d)); >> + } while (!vdev.wait_reply_timeout || (get_time_seconds() < target= _second)); >> =20 >> return 1; >> } >> --vAmZSzG6F8USlYihHfgj3Vb7Q403Fphu4-- --ATvfKllMZTOh5D4BHCrfEs4FAZeip3Itj Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl7OJ6IACgkQ41TmuOI4 ufjOHA/+KKfzZXYH4j+EG05VaQIM9VCvt2RQDbPPD0l9V/T/Ppf8cHo1kxCqaRdN rpRfKw195B67Qe4IGM3K7NJUPHLJEcHnYBtEoWzyj8KC5y02oAvd0JQFMQ4obbLP deTUxztyEs6Wg/EsEUKXOMCgrMiqc2BqcwbPEPy+Am/YyN4BNRN2o7kTgwfwdLgW /nbKAl0TPHzf7F2o6Jb5sI8A4JwyoSdWkFWhiIU0vTqHHg59+I3F7y+YgqHi9VYc KAlKrKEWetfgr7URewNLqvJU/DZHeoNHgv/aHttN7GFz8IE38V07Gu3eKkrO3dtz rkknhr3ouRq8oNoEEosLV82eiCHsgfXFEstqVxnMxsmdWcv22j2ppQGt6Ne+ib/y c2ao0Z2lgD/Z4kU/flH3z8WqhM+ZiJYLM7v6eKGvNjpgWOKRP9A8i51k/I01OWLQ 1z+0XahWiirEn2MjsDcqJ/GtmZIF7N0uoImR7/rdosESIY7LSThNou85POltP6GK g9XV9GLfJVwBUerBkFqwl6TwpDS2X06xaBh5wr/4W9p9W1oRAwTUdVixSuMjQjad 6WtdiaG3M3XesI4AIc8D0Eg0pSjRQvHxCxZ7x2eVkdOf+0IgMKDjLQCzQTpEUXKI MRdBX0pAN17L7gBCB+94d9i9xJ+Kor3xvDqOXiKjja10IrouXcI= =Qut7 -----END PGP SIGNATURE----- --ATvfKllMZTOh5D4BHCrfEs4FAZeip3Itj--