04-19-2011
how to display pid and other parameters of current process through kernel module ?
how to display pid and other parameters of current process in linux platform ?
i know it can be done through a linux commmand ps -F
but i want it done through kernel program
thanks in advance
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LEARN ABOUT SUNOS
sched_getparam
sched_getparam(3RT) Realtime Library Functions sched_getparam(3RT)
NAME
sched_getparam - get scheduling parameters
SYNOPSIS
cc [ flag... ] file... -lrt [ library... ]
#include <sched.h>
int sched_getparam(pid_t pid, struct sched_param *param);
DESCRIPTION
The sched_getparam() function returns the scheduling parameters of a process specified by pid in the sched_param structure pointed to by
param.
If a process specified by pid exists and if the calling process has permission, the scheduling parameters for the process whose process ID
is equal to pid will be returned.
If pid is 0, the scheduling parameters for the calling process will be returned. The behavior of the sched_getparam() function is unspeci-
fied if the value of pid is negative.
RETURN VALUES
Upon successful completion, the sched_getparam() function returns 0. If the call to sched_getparam() is unsuccessful, the function returns
-1 and sets errno to indicate the error.
ERRORS
The sched_getparam() function will fail if:
ENOSYS The sched_getparam() function is not supported by the system.
EPERM The requesting process does not have permission to obtain the scheduling parameters of the specified process.
ESRCH No process can be found corresponding to that specified by pid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
librt(3LIB), sched.h(3HEAD), sched_getscheduler(3RT), sched_setparam(3RT), sched_setscheduler(3RT), attributes(5)
NOTES
Solaris 2.6 was the first release to support libposix4/librt. Prior to this release, this function always returned -1 and set errno to
ENOSYS.
SunOS 5.10 5 Oct 2001 sched_getparam(3RT)