From: Dan Williams <dan.j.williams@intel.com> To: akpm@linux-foundation.org Cc: Joao Martins <joao.m.martins@oracle.com>, dave.hansen@linux.intel.com, linux-mm@kvack.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 16/17] dax/hmem: introduce dax_hmem.region_idle parameter Date: Fri, 25 Sep 2020 12:13:10 -0700 [thread overview] Message-ID: <160106119033.30709.11249962152222193448.stgit@dwillia2-desk3.amr.corp.intel.com> (raw) In-Reply-To: <160106109960.30709.7379926726669669398.stgit@dwillia2-desk3.amr.corp.intel.com> From: Joao Martins <joao.m.martins@oracle.com> Introduce a new module parameter for dax_hmem which initializes all region devices as free, rather than allocating a pagemap for the region by default. All hmem devices created with dax_hmem.region_idle=1 will have full available size for creating dynamic dax devices. Link: https://lkml.kernel.org/r/159643106460.4062302.5868522341307530091.stgit@dwillia2-desk3.amr.corp.intel.com Link: https://lore.kernel.org/r/20200716172913.19658-4-joao.m.martins@oracle.com Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/dax/hmem/hmem.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dax/hmem/hmem.c b/drivers/dax/hmem/hmem.c index 1a3347bb6143..1bf040dbc834 100644 --- a/drivers/dax/hmem/hmem.c +++ b/drivers/dax/hmem/hmem.c @@ -5,6 +5,9 @@ #include <linux/pfn_t.h> #include "../bus.h" +static bool region_idle; +module_param_named(region_idle, region_idle, bool, 0644); + static int dax_hmem_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -30,7 +33,7 @@ static int dax_hmem_probe(struct platform_device *pdev) data = (struct dev_dax_data) { .dax_region = dax_region, .id = -1, - .size = resource_size(res), + .size = region_idle ? 0 : resource_size(res), }; dev_dax = devm_create_dev_dax(&data); if (IS_ERR(dev_dax)) _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
WARNING: multiple messages have this Message-ID (diff)
From: Dan Williams <dan.j.williams@intel.com> To: akpm@linux-foundation.org Cc: Joao Martins <joao.m.martins@oracle.com>, vishal.l.verma@intel.com, dave.hansen@linux.intel.com, linux-mm@kvack.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 16/17] dax/hmem: introduce dax_hmem.region_idle parameter Date: Fri, 25 Sep 2020 12:13:10 -0700 [thread overview] Message-ID: <160106119033.30709.11249962152222193448.stgit@dwillia2-desk3.amr.corp.intel.com> (raw) In-Reply-To: <160106109960.30709.7379926726669669398.stgit@dwillia2-desk3.amr.corp.intel.com> From: Joao Martins <joao.m.martins@oracle.com> Introduce a new module parameter for dax_hmem which initializes all region devices as free, rather than allocating a pagemap for the region by default. All hmem devices created with dax_hmem.region_idle=1 will have full available size for creating dynamic dax devices. Link: https://lkml.kernel.org/r/159643106460.4062302.5868522341307530091.stgit@dwillia2-desk3.amr.corp.intel.com Link: https://lore.kernel.org/r/20200716172913.19658-4-joao.m.martins@oracle.com Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/dax/hmem/hmem.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dax/hmem/hmem.c b/drivers/dax/hmem/hmem.c index 1a3347bb6143..1bf040dbc834 100644 --- a/drivers/dax/hmem/hmem.c +++ b/drivers/dax/hmem/hmem.c @@ -5,6 +5,9 @@ #include <linux/pfn_t.h> #include "../bus.h" +static bool region_idle; +module_param_named(region_idle, region_idle, bool, 0644); + static int dax_hmem_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -30,7 +33,7 @@ static int dax_hmem_probe(struct platform_device *pdev) data = (struct dev_dax_data) { .dax_region = dax_region, .id = -1, - .size = resource_size(res), + .size = region_idle ? 0 : resource_size(res), }; dev_dax = devm_create_dev_dax(&data); if (IS_ERR(dev_dax))
next prev parent reply other threads:[~2020-09-25 19:31 UTC|newest] Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-25 19:11 [PATCH v5 00/17] device-dax: support sub-dividing soft-reserved ranges Dan Williams 2020-09-25 19:11 ` Dan Williams 2020-09-25 19:11 ` [PATCH v5 01/17] device-dax: make pgmap optional for instance creation Dan Williams 2020-09-25 19:11 ` Dan Williams 2020-10-01 8:41 ` David Hildenbrand 2020-10-01 8:41 ` David Hildenbrand 2020-10-01 16:54 ` Dan Williams 2020-10-01 16:54 ` Dan Williams 2020-10-01 16:54 ` Dan Williams 2020-10-01 17:39 ` David Hildenbrand 2020-10-01 17:39 ` David Hildenbrand 2020-10-01 19:12 ` Dan Williams 2020-10-01 19:12 ` Dan Williams 2020-10-01 19:12 ` Dan Williams 2020-09-25 19:11 ` [PATCH v5 02/17] device-dax/kmem: introduce dax_kmem_range() Dan Williams 2020-09-25 19:11 ` Dan Williams 2020-09-30 16:14 ` David Hildenbrand 2020-09-30 16:14 ` David Hildenbrand 2020-09-25 19:11 ` [PATCH v5 03/17] device-dax/kmem: move resource name tracking to drvdata Dan Williams 2020-09-25 19:11 ` Dan Williams 2020-09-30 16:19 ` David Hildenbrand 2020-09-30 16:19 ` David Hildenbrand 2020-09-25 19:12 ` [PATCH v5 04/17] device-dax/kmem: replace release_resource() with release_mem_region() Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-30 16:23 ` David Hildenbrand 2020-09-30 16:23 ` David Hildenbrand 2020-09-30 17:28 ` Dan Williams 2020-09-30 17:28 ` Dan Williams 2020-09-30 17:28 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 05/17] device-dax: add an allocation interface for device-dax instances Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 06/17] device-dax: introduce 'struct dev_dax' typed-driver operations Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 07/17] device-dax: introduce 'seed' devices Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 08/17] drivers/base: make device_find_child_by_name() compatible with sysfs inputs Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 09/17] device-dax: add resize support Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 10/17] mm/memremap_pages: convert to 'struct range' Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-28 19:12 ` boris.ostrovsky 2020-09-28 19:12 ` boris.ostrovsky 2020-09-25 19:12 ` [PATCH v5 11/17] mm/memremap_pages: support multiple ranges per invocation Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 12/17] device-dax: add dis-contiguous resource support Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 13/17] device-dax: introduce 'mapping' devices Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:12 ` [PATCH v5 14/17] device-dax: make align a per-device property Dan Williams 2020-09-25 19:12 ` Dan Williams 2020-09-25 19:13 ` [PATCH v5 15/17] device-dax: add an 'align' attribute Dan Williams 2020-09-25 19:13 ` Dan Williams 2020-09-26 2:22 ` Andrew Morton 2020-09-26 2:22 ` Andrew Morton 2020-09-26 3:31 ` Dan Williams 2020-09-26 3:31 ` Dan Williams 2020-09-26 3:31 ` Dan Williams 2020-09-25 19:13 ` Dan Williams [this message] 2020-09-25 19:13 ` [PATCH v5 16/17] dax/hmem: introduce dax_hmem.region_idle parameter Dan Williams 2020-09-25 19:13 ` [PATCH v5 17/17] device-dax: add a range mapping allocation attribute Dan Williams 2020-09-25 19:13 ` Dan Williams 2020-09-25 20:51 ` [PATCH v5 00/17] device-dax: support sub-dividing soft-reserved ranges Joao Martins 2020-09-25 20:51 ` Joao Martins 2020-09-25 21:01 ` Dan Williams 2020-09-25 21:01 ` Dan Williams 2020-09-25 21:05 ` Joao Martins 2020-09-25 21:05 ` Joao Martins
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=160106119033.30709.11249962152222193448.stgit@dwillia2-desk3.amr.corp.intel.com \ --to=dan.j.williams@intel.com \ --cc=akpm@linux-foundation.org \ --cc=dave.hansen@linux.intel.com \ --cc=joao.m.martins@oracle.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=linux-nvdimm@lists.01.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: linkBe 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.