CN102855922A - Method for recording computer crash information in Flash - Google Patents
Method for recording computer crash information in Flash Download PDFInfo
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- CN102855922A CN102855922A CN2012103255658A CN201210325565A CN102855922A CN 102855922 A CN102855922 A CN 102855922A CN 2012103255658 A CN2012103255658 A CN 2012103255658A CN 201210325565 A CN201210325565 A CN 201210325565A CN 102855922 A CN102855922 A CN 102855922A
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- flash
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- access controller
- kernel
- storer
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention relates to a method for recording computer crash information in a Flash. According to the method, when a failure of an access controller AC occurs, failure information of a kernel is recorded in a Flash memory of the access controller AC, and is output to a user. According to the present invention, fault information at the scene can be recorded so as to analyze and position the problem after restoring the system.
Description
Technical field
The present invention relates to field of wireless communication, especially abnormal problem appears in the Linux computer system, and the method for record trouble information was incited somebody to action when equipment was restarted, specifically a kind of method that records deadlock information in Flash.
Background technology
At present, field of wireless communication has specific access controller (AC) usually.Access controller (AC) will converge and access Internet from the data of different AP, finish simultaneously configuration management, the wireless user's of AP equipment the control function such as authentication, management and bandwidth, access, switching, safety.The common Faulty Analysis of on-the-spot AC gets, and the kernel crash that important process is restarted, certain causes unusually etc. is most common failure, and these faults have plenty of difficult reproduction.
Along with some existing networks of NPU platform AC are used and system level testing, system crash happens occasionally, in order to locate fast and to deal with problems, important information function when increasing at present the collapse of Flash register system, this function can record the information that needs concern effectively, such as OOM, Crash, value of register etc. during the Watchdog onset.After system restarted, application layer can be written to the information that records among the Flash in the daily record, used when dealing with problems.
Summary of the invention
The objective of the invention is to be difficult for for the common fault of on-the-spot AC the problem of reproduction, propose a kind of method that in Flash, records deadlock information.Important information when increasing the collapse of Flash register system, this function can record the information that needs concern effectively, such as OOM, Crash, value of register etc. during the Watchdog onset.After system restarted, application layer can be written to the information that records among the Flash in the daily record, used when dealing with problems.
Technical scheme of the present invention is:
A kind of method that records deadlock information in Flash, when access controller AC broke down, the failure message of record kernel exported the user in the Flash of access controller AC storer.
The present invention specifically may further comprise the steps:
(1) when the kernel of access controller AC breaks down, use the MTD technology, the key message of fault is saved in the Flash storer;
(2) system restarts, and the application layer process of access controller AC reads Flash, and the Flash information that reads is preserved; Simultaneously with the initialization of Flash content.
In the Flash storer of access controller of the present invention, reserve the kernel failure message of physical memory space storage AC.
Flash storer of the present invention position of mark in system is/dev/mtd3.
Flash of the present invention space is the 128K byte.
Beneficial effect of the present invention:
The method that records deadlock information in Flash of the present invention is recorded on-the-spot at that time failure message by system of the present invention, so that post analysis, orientation problem are recovered by system.
Description of drawings
Fig. 1 is the structural representation of Flash recording exceptional information of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, design of the present invention is at first to divide the 128K space in Flash, and kernel exception information is saved in Flash, and waiting system is restarted the interface that rear application call module provides, and the Flash content is read and write log system, is used for preserving.
The below is with access controller (AC), introduces and realizes kernel exception information is saved in method in the log system.
In the present embodiment, specifically comprise following step:
Step 1, the Flash of pre-defined use is/dev/mtd3 that this Flash space reaches the 128K byte.Because Flash is different from file, file can be done easily and append operation, and Flash must provide definite address or side-play amount.
Step 2 is directly called MTD when system's abnormal, before kernel is restarted information is write among the Flash.
Step 3, system kernel is restarted, and reads Flash information by application program, and the Flash information that reads writes daily record and preserve, and simultaneously with the initialization of Flash content, is used for using during record next time.
Because Flash is different from file, file can be done easily and append operation, and Flash must provide definite address or side-play amount.
dev: offset size erasesize name
mtd3: 00420000 00020000 00020000 "bak"
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (5)
1. the method for a record deadlock information in Flash when it is characterized in that access controller AC breaks down, records the failure message of kernel in the Flash of access controller AC storer, exports the user to.
According to claim 1 in Flash the method for record deadlock information, it is characterized in that it specifically may further comprise the steps:
(1) when the kernel of access controller AC breaks down, use the MTD technology, the key message of fault is saved in the Flash storer;
(2) system restarts, and the application layer process of access controller AC reads Flash, and the Flash information that reads is preserved; Simultaneously with the initialization of Flash content.
3. the method that records deadlock information in Flash according to claim 1 is characterized in that in the Flash of access controller storer, reserves the kernel failure message of physical memory space storage AC.
4. one of according to claim 1-3 described in Flash the method for record deadlock information, it is characterized in that Flash storer position of mark in system is/dev/mtd3.
5. the method that records deadlock information in Flash according to claim 3 is characterized in that the Flash space is the 128K byte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103255658A CN102855922A (en) | 2012-09-05 | 2012-09-05 | Method for recording computer crash information in Flash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103255658A CN102855922A (en) | 2012-09-05 | 2012-09-05 | Method for recording computer crash information in Flash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102855922A true CN102855922A (en) | 2013-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103255658A Pending CN102855922A (en) | 2012-09-05 | 2012-09-05 | Method for recording computer crash information in Flash |
Country Status (1)
| Country | Link |
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| CN (1) | CN102855922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339213A (en) * | 2016-08-16 | 2017-01-18 | Tcl移动通信科技（宁波）有限公司 | Control method and system for preventing mobile terminal from burning card when in starting up |
| CN108664655A (en) * | 2018-05-18 | 2018-10-16 | 上海赛治信息技术有限公司 | The log storing method and system of embedded system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036109A1 (en) * | 1999-12-17 | 2001-11-01 | Sanjay Jha | Mobile communication device having integrated embedded flash SRAM memory |
| CN1813454A (en) * | 2003-04-28 | 2006-08-02 | 钱特利网络公司 | System and method for mobile unit session management across a wireless communication network |
| CN101201770A (en) * | 2006-12-15 | 2008-06-18 | 大唐移动通信设备有限公司 | Method and system for storing important information before system collapse |
| CN101217440A (en) * | 2008-01-15 | 2008-07-09 | 杭州华三通信技术有限公司 | An access method and access device of AP to AC in wireless LAN |
-
2012
- 2012-09-05 CN CN2012103255658A patent/CN102855922A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010036109A1 (en) * | 1999-12-17 | 2001-11-01 | Sanjay Jha | Mobile communication device having integrated embedded flash SRAM memory |
| CN1813454A (en) * | 2003-04-28 | 2006-08-02 | 钱特利网络公司 | System and method for mobile unit session management across a wireless communication network |
| CN101201770A (en) * | 2006-12-15 | 2008-06-18 | 大唐移动通信设备有限公司 | Method and system for storing important information before system collapse |
| CN101217440A (en) * | 2008-01-15 | 2008-07-09 | 杭州华三通信技术有限公司 | An access method and access device of AP to AC in wireless LAN |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106339213A (en) * | 2016-08-16 | 2017-01-18 | Tcl移动通信科技（宁波）有限公司 | Control method and system for preventing mobile terminal from burning card when in starting up |
| CN106339213B (en) * | 2016-08-16 | 2020-09-22 | Tcl移动通信科技（宁波）有限公司 | Control method and system for preventing card burning during starting of mobile terminal |
| CN108664655A (en) * | 2018-05-18 | 2018-10-16 | 上海赛治信息技术有限公司 | The log storing method and system of embedded system |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |