kernel: update kernel 4.4 to version 4.4.22

[lede.git] / target / linux / generic / patches-4.4 / 930-crashlog.patch

diff --git a/target/linux/generic/patches-4.4/930-crashlog.patch b/target/linux/generic/patches-4.4/930-crashlog.patch
index 339cffa34e7094e231b966cdfd298bee9b0d436d..fdc80d750aa5a1491a2eb9121c64374004536ff0 100644 (file)
--- a/target/linux/generic/patches-4.4/930-crashlog.patch
+++ b/target/linux/generic/patches-4.4/930-crashlog.patch
@@ -43,7 +43,7 @@
  
 --- /dev/null
 +++ b/kernel/crashlog.c
-@@ -0,0 +1,193 @@
+@@ -0,0 +1,213 @@
 +/*
 + * Crash information logger
 + * Copyright (C) 2010 Felix Fietkau <nbd@nbd.name>
@@ -103,37 +103,57 @@
 +
 +extern struct list_head *crashlog_modules;
 +
++static bool crashlog_set_addr(phys_addr_t addr, phys_addr_t size)
++{
++      /* Limit to lower 64 MB to avoid highmem */
++      phys_addr_t limit = 64 * 1024 * 1024;
++
++      if (crashlog_addr)
++              return false;
++
++      if (addr > limit)
++              return false;
++
++      if (addr + size > limit)
++              size = limit - addr;
++
++      crashlog_addr = addr;
++
++      if (addr + size > CRASHLOG_OFFSET)
++              crashlog_addr += size - CRASHLOG_OFFSET;
++
++      return true;
++}
++
 +#ifndef CONFIG_NO_BOOTMEM
 +void __init crashlog_init_bootmem(bootmem_data_t *bdata)
 +{
-+      unsigned long addr;
++      phys_addr_t start, end;
 +
-+      if (crashlog_addr)
++      start = PFN_PHYS(bdata->node_low_pfn);
++      end = PFN_PHYS(bdata->node_min_pfn);
++      if (!crashlog_set_addr(start, end - start))
 +              return;
 +
-+      addr = PFN_PHYS(bdata->node_low_pfn) - CRASHLOG_OFFSET;
-+      if (reserve_bootmem(addr, CRASHLOG_SIZE, BOOTMEM_EXCLUSIVE) < 0) {
-+              printk("Crashlog failed to allocate RAM at address 0x%lx\n", addr);
-+              bdata->node_low_pfn -= CRASHLOG_PAGES;
-+              addr = PFN_PHYS(bdata->node_low_pfn);
++      if (reserve_bootmem(crashlog_addr, CRASHLOG_SIZE, BOOTMEM_EXCLUSIVE) < 0) {
++              printk("Crashlog failed to allocate RAM at address 0x%lx\n",
++                     crashlog_addr);
++              crashlog_addr = 0;
 +      }
-+      crashlog_addr = addr;
 +}
 +#endif
 +
 +#ifdef CONFIG_HAVE_MEMBLOCK
 +void __init_memblock crashlog_init_memblock(phys_addr_t addr, phys_addr_t size)
 +{
-+      if (crashlog_addr)
++      if (!crashlog_set_addr(addr, size))
 +              return;
 +
-+      addr += size - CRASHLOG_OFFSET;
-+      if (memblock_reserve(addr, CRASHLOG_SIZE)) {
-+              printk("Crashlog failed to allocate RAM at address 0x%lx\n", (unsigned long) addr);
-+              return;
++      if (memblock_reserve(crashlog_addr, CRASHLOG_SIZE)) {
++              printk("Crashlog failed to allocate RAM at address 0x%lx\n",
++                     crashlog_addr);
++              crashlog_addr = 0;
 +      }
-+
-+      crashlog_addr = addr;
 +}
 +#endif
 +
@@ -237,24 +257,6 @@
 +      return 0;
 +}
 +module_init(crashlog_init_fs);
---- a/mm/bootmem.c
-+++ b/mm/bootmem.c
-@@ -15,6 +15,7 @@
- #include <linux/export.h>
- #include <linux/kmemleak.h>
- #include <linux/range.h>
-+#include <linux/crashlog.h>
- #include <linux/memblock.h>
- #include <linux/bug.h>
- #include <linux/io.h>
-@@ -177,6 +178,7 @@ static unsigned long __init free_all_boo
-       if (!bdata->node_bootmem_map)
-               return 0;
- 
-+      crashlog_init_bootmem(bdata);
-       map = bdata->node_bootmem_map;
-       start = bdata->node_min_pfn;
-       end = bdata->node_low_pfn;
 --- a/kernel/module.c
 +++ b/kernel/module.c
 @@ -275,6 +275,9 @@ static void mod_update_bounds(struct mod
@@ -277,7 +279,16 @@
  
  #include <asm-generic/sections.h>
  #include <linux/io.h>
-@@ -541,6 +542,8 @@ int __init_memblock memblock_add_range(s
+@@ -503,6 +504,8 @@ static void __init_memblock memblock_ins
+       memblock_set_region_node(rgn, nid);
+       type->cnt++;
+       type->total_size += size;
++      if (type == &memblock.memory)
++              crashlog_init_memblock(base, size);
+ }
+ 
+ /**
+@@ -541,6 +544,8 @@ int __init_memblock memblock_add_range(s
                type->regions[0].flags = flags;
                memblock_set_region_node(&type->regions[0], nid);
                type->total_size = size;
@@ -286,3 +297,21 @@
                return 0;
        }
  repeat:
+--- a/mm/bootmem.c
++++ b/mm/bootmem.c
+@@ -15,6 +15,7 @@
+ #include <linux/export.h>
+ #include <linux/kmemleak.h>
+ #include <linux/range.h>
++#include <linux/crashlog.h>
+ #include <linux/memblock.h>
+ #include <linux/bug.h>
+ #include <linux/io.h>
+@@ -177,6 +178,7 @@ static unsigned long __init free_all_boo
+       if (!bdata->node_bootmem_map)
+               return 0;
+ 
++      crashlog_init_bootmem(bdata);
+       map = bdata->node_bootmem_map;
+       start = bdata->node_min_pfn;
+       end = bdata->node_low_pfn;