diff options
Diffstat (limited to 'include/linux/init.h')
-rw-r--r-- | include/linux/init.h | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/include/linux/init.h b/include/linux/init.h index de994304e0bb..9146f39cdddf 100644 --- a/include/linux/init.h +++ b/include/linux/init.h | |||
@@ -46,16 +46,23 @@ | |||
46 | #define __exitdata __section(.exit.data) | 46 | #define __exitdata __section(.exit.data) |
47 | #define __exit_call __used __section(.exitcall.exit) | 47 | #define __exit_call __used __section(.exitcall.exit) |
48 | 48 | ||
49 | /* modpost check for section mismatches during the kernel build. | 49 | /* |
50 | * modpost check for section mismatches during the kernel build. | ||
50 | * A section mismatch happens when there are references from a | 51 | * A section mismatch happens when there are references from a |
51 | * code or data section to an init section (both code or data). | 52 | * code or data section to an init section (both code or data). |
52 | * The init sections are (for most archs) discarded by the kernel | 53 | * The init sections are (for most archs) discarded by the kernel |
53 | * when early init has completed so all such references are potential bugs. | 54 | * when early init has completed so all such references are potential bugs. |
54 | * For exit sections the same issue exists. | 55 | * For exit sections the same issue exists. |
56 | * | ||
55 | * The following markers are used for the cases where the reference to | 57 | * The following markers are used for the cases where the reference to |
56 | * the *init / *exit section (code or data) is valid and will teach | 58 | * the *init / *exit section (code or data) is valid and will teach |
57 | * modpost not to issue a warning. | 59 | * modpost not to issue a warning. Intended semantics is that a code or |
58 | * The markers follow same syntax rules as __init / __initdata. */ | 60 | * data tagged __ref* can reference code or data from init section without |
61 | * producing a warning (of course, no warning does not mean code is | ||
62 | * correct, so optimally document why the __ref is needed and why it's OK). | ||
63 | * | ||
64 | * The markers follow same syntax rules as __init / __initdata. | ||
65 | */ | ||
59 | #define __ref __section(.ref.text) noinline | 66 | #define __ref __section(.ref.text) noinline |
60 | #define __refdata __section(.ref.data) | 67 | #define __refdata __section(.ref.data) |
61 | #define __refconst __section(.ref.rodata) | 68 | #define __refconst __section(.ref.rodata) |
@@ -72,29 +79,29 @@ | |||
72 | #define __exitused __used | 79 | #define __exitused __used |
73 | #endif | 80 | #endif |
74 | 81 | ||
75 | #define __exit __section(.exit.text) __exitused __cold | 82 | #define __exit __section(.exit.text) __exitused __cold notrace |
76 | 83 | ||
77 | /* Used for HOTPLUG */ | 84 | /* Used for HOTPLUG */ |
78 | #define __devinit __section(.devinit.text) __cold | 85 | #define __devinit __section(.devinit.text) __cold notrace |
79 | #define __devinitdata __section(.devinit.data) | 86 | #define __devinitdata __section(.devinit.data) |
80 | #define __devinitconst __section(.devinit.rodata) | 87 | #define __devinitconst __section(.devinit.rodata) |
81 | #define __devexit __section(.devexit.text) __exitused __cold | 88 | #define __devexit __section(.devexit.text) __exitused __cold notrace |
82 | #define __devexitdata __section(.devexit.data) | 89 | #define __devexitdata __section(.devexit.data) |
83 | #define __devexitconst __section(.devexit.rodata) | 90 | #define __devexitconst __section(.devexit.rodata) |
84 | 91 | ||
85 | /* Used for HOTPLUG_CPU */ | 92 | /* Used for HOTPLUG_CPU */ |
86 | #define __cpuinit __section(.cpuinit.text) __cold | 93 | #define __cpuinit __section(.cpuinit.text) __cold notrace |
87 | #define __cpuinitdata __section(.cpuinit.data) | 94 | #define __cpuinitdata __section(.cpuinit.data) |
88 | #define __cpuinitconst __section(.cpuinit.rodata) | 95 | #define __cpuinitconst __section(.cpuinit.rodata) |
89 | #define __cpuexit __section(.cpuexit.text) __exitused __cold | 96 | #define __cpuexit __section(.cpuexit.text) __exitused __cold notrace |
90 | #define __cpuexitdata __section(.cpuexit.data) | 97 | #define __cpuexitdata __section(.cpuexit.data) |
91 | #define __cpuexitconst __section(.cpuexit.rodata) | 98 | #define __cpuexitconst __section(.cpuexit.rodata) |
92 | 99 | ||
93 | /* Used for MEMORY_HOTPLUG */ | 100 | /* Used for MEMORY_HOTPLUG */ |
94 | #define __meminit __section(.meminit.text) __cold | 101 | #define __meminit __section(.meminit.text) __cold notrace |
95 | #define __meminitdata __section(.meminit.data) | 102 | #define __meminitdata __section(.meminit.data) |
96 | #define __meminitconst __section(.meminit.rodata) | 103 | #define __meminitconst __section(.meminit.rodata) |
97 | #define __memexit __section(.memexit.text) __exitused __cold | 104 | #define __memexit __section(.memexit.text) __exitused __cold notrace |
98 | #define __memexitdata __section(.memexit.data) | 105 | #define __memexitdata __section(.memexit.data) |
99 | #define __memexitconst __section(.memexit.rodata) | 106 | #define __memexitconst __section(.memexit.rodata) |
100 | 107 | ||