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GET /api/1.2/patches/2225277/?format=api
{ "id": 2225277, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2225277/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260420192520.1444749-6-rs@ti.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/1.2/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260420192520.1444749-6-rs@ti.com>", "list_archive_url": null, "date": "2026-04-20T19:25:19", "name": "[PATCHv4,5/6] efi_mem_sort: use list_for_each_entry_safe instead", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "d1e9a0e147512dc6b3ae31d8675b3ce923cce1d2", "submitter": { "id": 88727, "url": "http://patchwork.ozlabs.org/api/1.2/people/88727/?format=api", "name": "Randolph Sapp", "email": "rs@ti.com" }, "delegate": { "id": 68728, "url": "http://patchwork.ozlabs.org/api/1.2/users/68728/?format=api", "username": "xypron", "first_name": "Heinrich", "last_name": "Schuchardt", "email": "xypron.glpk@gmx.de" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260420192520.1444749-6-rs@ti.com/mbox/", "series": [ { "id": 500668, "url": "http://patchwork.ozlabs.org/api/1.2/series/500668/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=500668", "date": "2026-04-20T19:25:18", "name": "various memory related fixups", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500668/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225277/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225277/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256\n header.s=selector1 header.b=SX8gQDR7;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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Ip=[198.47.23.195];\n Helo=[lewvzet201.ext.ti.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n MWH0EPF000C6193.namprd02.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "CH0PR10MB5132", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "From: Randolph Sapp <rs@ti.com>\n\nUse list_for_each_entry_safe and comparisons against the current and\nnext efi_mem_desc. This reduces the computation required for merging\nregions, prevents unnecessary additional iterations of the list, and\nrequires less temporary values.\n\nSigned-off-by: Randolph Sapp <rs@ti.com>\nReviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>\nReviewed-by: Simon Glass <sjg@chromium.org>\n---\n lib/efi_loader/efi_memory.c | 47 +++++++++++++------------------------\n 1 file changed, 16 insertions(+), 31 deletions(-)", "diff": "diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c\nindex b77c2f980cc..046a2bb4641 100644\n--- a/lib/efi_loader/efi_memory.c\n+++ b/lib/efi_loader/efi_memory.c\n@@ -128,44 +128,29 @@ static uint64_t desc_get_end(struct efi_mem_desc *desc)\n */\n static void efi_mem_sort(void)\n {\n-\tstruct efi_mem_list *lmem;\n-\tstruct efi_mem_list *prevmem = NULL;\n-\tbool merge_again = true;\n+\tstruct efi_mem_list *curmem, *nextmem = NULL;\n \n \tlist_sort(NULL, &efi_mem, efi_mem_cmp);\n \n \t/* Now merge entries that can be merged */\n-\twhile (merge_again) {\n-\t\tmerge_again = false;\n-\t\tlist_for_each_entry(lmem, &efi_mem, link) {\n-\t\t\tstruct efi_mem_desc *prev;\n-\t\t\tstruct efi_mem_desc *cur;\n-\t\t\tuint64_t pages;\n+\tlist_for_each_entry_safe(curmem, nextmem, &efi_mem, link) {\n+\t\tstruct efi_mem_desc *cur;\n+\t\tstruct efi_mem_desc *next;\n \n-\t\t\tif (!prevmem) {\n-\t\t\t\tprevmem = lmem;\n-\t\t\t\tcontinue;\n-\t\t\t}\n+\t\t/* Exit when we've got nothing to compare with */\n+\t\tif (&nextmem->link == &efi_mem)\n+\t\t\tbreak;\n \n-\t\t\tcur = &lmem->desc;\n-\t\t\tprev = &prevmem->desc;\n-\n-\t\t\tif ((desc_get_end(cur) == prev->physical_start) &&\n-\t\t\t (prev->type == cur->type) &&\n-\t\t\t (prev->attribute == cur->attribute)) {\n-\t\t\t\t/* There is an existing map before, reuse it */\n-\t\t\t\tpages = cur->num_pages;\n-\t\t\t\tprev->num_pages += pages;\n-\t\t\t\tprev->physical_start -= pages << EFI_PAGE_SHIFT;\n-\t\t\t\tprev->virtual_start -= pages << EFI_PAGE_SHIFT;\n-\t\t\t\tlist_del(&lmem->link);\n-\t\t\t\tfree(lmem);\n-\n-\t\t\t\tmerge_again = true;\n-\t\t\t\tbreak;\n-\t\t\t}\n+\t\tcur = &curmem->desc;\n+\t\tnext = &nextmem->desc;\n \n-\t\t\tprevmem = lmem;\n+\t\tif ((cur->physical_start == desc_get_end(next)) &&\n+\t\t (cur->type == next->type) &&\n+\t\t (cur->attribute == next->attribute)) {\n+\t\t\t/* There is another similar map coming up, reuse it */\n+\t\t\tnext->num_pages += cur->num_pages;\n+\t\t\tlist_del(&curmem->link);\n+\t\t\tfree(curmem);\n \t\t}\n \t}\n }\n", "prefixes": [ "PATCHv4", "5/6" ] }