All of lore.kernel.org
 help / color / mirror / Atom feed
From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
To: <joro@8bytes.org>, <bp@alien8.de>, <peterz@infradead.org>,
	<mingo@redhat.com>, <acme@kernel.org>
Cc: <andihartmann@freenet.de>, <linux-kernel@vger.kernel.org>,
	<iommu@lists.linux-foundation.org>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Subject: [PATCH V3 3/5] iommu/amd: Introduce amd_iommu_get_num_iommus()
Date: Tue, 9 Feb 2016 16:53:53 -0600	[thread overview]
Message-ID: <1455058435-8716-4-git-send-email-Suravee.Suthikulpanit@amd.com> (raw)
In-Reply-To: <1455058435-8716-1-git-send-email-Suravee.Suthikulpanit@amd.com>

This patch introduces amd_iommu_get_num_iommus(). Initially, this is
intended to be used by Perf AMD IOMMU driver.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
---
 drivers/iommu/amd_iommu_init.c            | 7 ++++++-
 include/linux/perf/perf_event_amd_iommu.h | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 275c0f5..531b2e1 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1030,7 +1030,7 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
 
 	/* Add IOMMU to internal data structures */
 	list_add_tail(&iommu->list, &amd_iommu_list);
-	iommu->index             = amd_iommus_present++;
+	iommu->index = amd_iommus_present++;
 
 	if (unlikely(iommu->index >= MAX_IOMMUS)) {
 		WARN(1, "AMD-Vi: System has more IOMMUs than supported by this driver\n");
@@ -2244,6 +2244,11 @@ bool amd_iommu_v2_supported(void)
 }
 EXPORT_SYMBOL(amd_iommu_v2_supported);
 
+int amd_iommu_get_num_iommus(void)
+{
+	return amd_iommus_present;
+}
+
 /****************************************************************************
  *
  * IOMMU EFR Performance Counter support functionality. This code allows
diff --git a/include/linux/perf/perf_event_amd_iommu.h b/include/linux/perf/perf_event_amd_iommu.h
index 815eabb..cb820c2 100644
--- a/include/linux/perf/perf_event_amd_iommu.h
+++ b/include/linux/perf/perf_event_amd_iommu.h
@@ -25,6 +25,8 @@
 #define PC_MAX_SPEC_CNTRS			16
 
 /* amd_iommu_init.c external support functions */
+extern int amd_iommu_get_num_iommus(void);
+
 extern bool amd_iommu_pc_supported(void);
 
 extern u8 amd_iommu_pc_get_max_banks(void);
-- 
2.5.0

WARNING: multiple messages have this Message-ID (diff)
From: Suravee Suthikulpanit <Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org,
	bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org,
	peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
	mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
	acme-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org
Cc: andihartmann-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Subject: [PATCH V3 3/5] iommu/amd: Introduce amd_iommu_get_num_iommus()
Date: Tue, 9 Feb 2016 16:53:53 -0600	[thread overview]
Message-ID: <1455058435-8716-4-git-send-email-Suravee.Suthikulpanit@amd.com> (raw)
In-Reply-To: <1455058435-8716-1-git-send-email-Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>

This patch introduces amd_iommu_get_num_iommus(). Initially, this is
intended to be used by Perf AMD IOMMU driver.

Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit-5C7GfCeVMHo@public.gmane.org>
---
 drivers/iommu/amd_iommu_init.c            | 7 ++++++-
 include/linux/perf/perf_event_amd_iommu.h | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 275c0f5..531b2e1 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1030,7 +1030,7 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
 
 	/* Add IOMMU to internal data structures */
 	list_add_tail(&iommu->list, &amd_iommu_list);
-	iommu->index             = amd_iommus_present++;
+	iommu->index = amd_iommus_present++;
 
 	if (unlikely(iommu->index >= MAX_IOMMUS)) {
 		WARN(1, "AMD-Vi: System has more IOMMUs than supported by this driver\n");
@@ -2244,6 +2244,11 @@ bool amd_iommu_v2_supported(void)
 }
 EXPORT_SYMBOL(amd_iommu_v2_supported);
 
+int amd_iommu_get_num_iommus(void)
+{
+	return amd_iommus_present;
+}
+
 /****************************************************************************
  *
  * IOMMU EFR Performance Counter support functionality. This code allows
diff --git a/include/linux/perf/perf_event_amd_iommu.h b/include/linux/perf/perf_event_amd_iommu.h
index 815eabb..cb820c2 100644
--- a/include/linux/perf/perf_event_amd_iommu.h
+++ b/include/linux/perf/perf_event_amd_iommu.h
@@ -25,6 +25,8 @@
 #define PC_MAX_SPEC_CNTRS			16
 
 /* amd_iommu_init.c external support functions */
+extern int amd_iommu_get_num_iommus(void);
+
 extern bool amd_iommu_pc_supported(void);
 
 extern u8 amd_iommu_pc_get_max_banks(void);
-- 
2.5.0

  parent reply	other threads:[~2016-02-09 22:54 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-09 22:53 [PATCH V3 0/5] perf/amd/iommu: Enable multi-IOMMU support Suravee Suthikulpanit
2016-02-09 22:53 ` Suravee Suthikulpanit
2016-02-09 22:53 ` [PATCH V3 1/5] perf/amd/iommu: Consolidate and move perf_event_amd_iommu header Suravee Suthikulpanit
2016-02-09 22:53   ` Suravee Suthikulpanit
2016-02-10 16:41   ` Borislav Petkov
2016-02-10 18:42     ` Suravee Suthikulpanit
2016-02-10 18:42       ` Suravee Suthikulpanit
2016-02-10 18:51       ` Borislav Petkov
2016-02-10 18:51         ` Borislav Petkov
2016-02-10 18:56         ` Suravee Suthikulpanit
2016-02-10 18:56           ` Suravee Suthikulpanit
2016-02-10 19:00           ` Borislav Petkov
2016-02-10 19:00             ` Borislav Petkov
2016-02-09 22:53 ` [PATCH V3 2/5] perf/amd/iommu: Modify functions to query max banks and counters Suravee Suthikulpanit
2016-02-09 22:53   ` Suravee Suthikulpanit
2016-02-09 22:53 ` Suravee Suthikulpanit [this message]
2016-02-09 22:53   ` [PATCH V3 3/5] iommu/amd: Introduce amd_iommu_get_num_iommus() Suravee Suthikulpanit
2016-02-09 22:53 ` [PATCH V3 4/5] perf/amd/iommu: Introduce get_iommu_bnk_cnt_evt_idx Suravee Suthikulpanit
2016-02-09 22:53   ` Suravee Suthikulpanit
2016-02-10 16:43   ` Borislav Petkov
2016-02-10 16:43     ` Borislav Petkov
2016-02-09 22:53 ` [PATCH V3 5/5] perf/amd/iommu: Enable support for multiple IOMMUs Suravee Suthikulpanit
2016-02-09 22:53   ` Suravee Suthikulpanit
2016-02-10 17:14   ` Borislav Petkov
2016-02-10 17:14     ` Borislav Petkov
2016-02-11  8:34     ` Suravee Suthikulpanit
2016-02-11  8:34       ` Suravee Suthikulpanit
2016-02-10  0:08 ` [PATCH V3 0/5] perf/amd/iommu: Enable multi-IOMMU support Borislav Petkov
2016-02-10  0:08   ` Borislav Petkov
2016-02-10 13:43   ` Suravee Suthikulpanit
2016-02-10 13:43     ` Suravee Suthikulpanit

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1455058435-8716-4-git-send-email-Suravee.Suthikulpanit@amd.com \
    --to=suravee.suthikulpanit@amd.com \
    --cc=acme@kernel.org \
    --cc=andihartmann@freenet.de \
    --cc=bp@alien8.de \
    --cc=iommu@lists.linux-foundation.org \
    --cc=joro@8bytes.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@redhat.com \
    --cc=peterz@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.