)]}'
{
  "commit": "4f8b96cd47b06f1e3ec71c1a3216113efe8dbfb5",
  "tree": "e2024b147f7d55c20c9e3aaf24a4bfe7b22ef60e",
  "parents": [
    "673afbace459ae6fd8d03bda410e0a9f10438c99"
  ],
  "author": {
    "name": "Thomas Gleixner",
    "email": "tglx@linutronix.de",
    "time": "Tue Nov 03 10:27:17 2020 +0100"
  },
  "committer": {
    "name": "Thomas Gleixner",
    "email": "tglx@linutronix.de",
    "time": "Fri Nov 06 23:14:54 2020 +0100"
  },
  "message": "asm-generic: Provide kmap_size.h\n\nkmap_types.h is a misnomer because the old atomic MAP based array does not\nexist anymore and the whole indirection of architectures including\nkmap_types.h is inconinstent and does not allow to provide guard page\ndebugging for this misfeature.\n\nAdd a common header file which defines the mapping stack size for all\narchitectures. Will be used when converting architectures over to a\ngeneric kmap_local/atomic implementation.\n\nThe array size is chosen with the following constraints in mind:\n\n    - The deepest nest level in one context is 3 according to code\n      inspection.\n\n    - The worst case nesting for the upcoming reemptible version would be:\n\n      2 maps in task context and a fault inside\n      2 maps in the fault handler\n      3 maps in softirq\n      2 maps in interrupt\n\nSo a total of 16 is sufficient and probably overestimated.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nLink: https://lore.kernel.org/r/20201103095857.078043987@linutronix.de\n\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "e78bbb9a07e90b72df2da87f35950b6f30673833",
      "old_mode": 33188,
      "old_path": "include/asm-generic/Kbuild",
      "new_id": "ed62d384fb797bf582acb3b11b1d04faf9cf321e",
      "new_mode": 33188,
      "new_path": "include/asm-generic/Kbuild"
    },
    {
      "type": "add",
      "old_id": "0000000000000000000000000000000000000000",
      "old_mode": 0,
      "old_path": "/dev/null",
      "new_id": "9d6c7786a645f86917c524912cba7a080bbd26b9",
      "new_mode": 33188,
      "new_path": "include/asm-generic/kmap_size.h"
    }
  ]
}