From f0f4711aa16b82016c0b6e59871934bbd71258da Mon Sep 17 00:00:00 2001 From: Toshi Kani <toshi.kani@hpe.com> Date: Tue, 26 Jan 2016 21:57:30 +0100 Subject: [PATCH] x86, kexec, nvdimm: Use walk_iomem_res_desc() for iomem search Change the callers of walk_iomem_res() scanning for the following resources by name to use walk_iomem_res_desc() instead. "ACPI Tables" "ACPI Non-volatile Storage" "Persistent Memory (legacy)" "Crash kernel" Note, the caller of walk_iomem_res() with "GART" will be removed in a later patch. Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Dave Young <dyoung@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chun-Yi <joeyli.kernel@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Don Zickus <dzickus@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Lee, Chun-Yi <joeyli.kernel@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: Minfei Huang <mnfhuang@gmail.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Takao Indoh <indou.takao@jp.fujitsu.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: kexec@lists.infradead.org Cc: linux-arch@vger.kernel.org Cc: linux-mm <linux-mm@kvack.org> Cc: linux-nvdimm@lists.01.org Link: http://lkml.kernel.org/r/1453841853-11383-15-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/crash.c | 4 ++-- arch/x86/kernel/pmem.c | 4 ++-- drivers/nvdimm/e820.c | 2 +- kernel/kexec_file.c | 8 ++++---- 4 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c index 58f34319b29a..35e152eeb6e0 100644 --- a/arch/x86/kernel/crash.c +++ b/arch/x86/kernel/crash.c @@ -599,12 +599,12 @@ int crash_setup_memmap_entries(struct kimage *image, struct boot_params *params) /* Add ACPI tables */ cmd.type = E820_ACPI; flags = IORESOURCE_MEM | IORESOURCE_BUSY; - walk_iomem_res("ACPI Tables", flags, 0, -1, &cmd, + walk_iomem_res_desc(IORES_DESC_ACPI_TABLES, flags, 0, -1, &cmd, memmap_entry_callback); /* Add ACPI Non-volatile Storage */ cmd.type = E820_NVS; - walk_iomem_res("ACPI Non-volatile Storage", flags, 0, -1, &cmd, + walk_iomem_res_desc(IORES_DESC_ACPI_NV_STORAGE, flags, 0, -1, &cmd, memmap_entry_callback); /* Add crashk_low_res region */ diff --git a/arch/x86/kernel/pmem.c b/arch/x86/kernel/pmem.c index 14415aff1813..92f70147a9a6 100644 --- a/arch/x86/kernel/pmem.c +++ b/arch/x86/kernel/pmem.c @@ -13,11 +13,11 @@ static int found(u64 start, u64 end, void *data) static __init int register_e820_pmem(void) { - char *pmem = "Persistent Memory (legacy)"; struct platform_device *pdev; int rc; - rc = walk_iomem_res(pmem, IORESOURCE_MEM, 0, -1, NULL, found); + rc = walk_iomem_res_desc(IORES_DESC_PERSISTENT_MEMORY_LEGACY, + IORESOURCE_MEM, 0, -1, NULL, found); if (rc <= 0) return 0; diff --git a/drivers/nvdimm/e820.c b/drivers/nvdimm/e820.c index b0045a505dc8..95825b38559a 100644 --- a/drivers/nvdimm/e820.c +++ b/drivers/nvdimm/e820.c @@ -55,7 +55,7 @@ static int e820_pmem_probe(struct platform_device *pdev) for (p = iomem_resource.child; p ; p = p->sibling) { struct nd_region_desc ndr_desc; - if (strncmp(p->name, "Persistent Memory (legacy)", 26) != 0) + if (p->desc != IORES_DESC_PERSISTENT_MEMORY_LEGACY) continue; memset(&ndr_desc, 0, sizeof(ndr_desc)); diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 2bfcdc064116..56b18eb1f001 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -524,10 +524,10 @@ int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz, /* Walk the RAM ranges and allocate a suitable range for the buffer */ if (image->type == KEXEC_TYPE_CRASH) - ret = walk_iomem_res("Crash kernel", - IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY, - crashk_res.start, crashk_res.end, kbuf, - locate_mem_hole_callback); + ret = walk_iomem_res_desc(crashk_res.desc, + IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY, + crashk_res.start, crashk_res.end, kbuf, + locate_mem_hole_callback); else ret = walk_system_ram_res(0, -1, kbuf, locate_mem_hole_callback); -- 2.20.1