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| author | Lawrence Stewart <lstewart@FreeBSD.org> | 2011-11-21 01:26:10 +0000 |
|---|---|---|
| committer | Lawrence Stewart <lstewart@FreeBSD.org> | 2011-11-21 01:26:10 +0000 |
| commit | cf13a585108b17af3458834fe79d608c6a425649 (patch) | |
| tree | e812bc9031b95cd473bdb74037774c00712f0667 /sys/kern/systrace_args.c | |
| parent | ebcc5e9a0db66a12ec367780d4656e34e98af5fa (diff) | |
| download | src-cf13a585108b17af3458834fe79d608c6a425649.tar.gz src-cf13a585108b17af3458834fe79d608c6a425649.zip | |
- Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate()
system calls to provide feed-forward clock management capabilities to
userspace processes. ffclock_getcounter() returns the current value of the
kernel's feed-forward clock counter. ffclock_getestimate() returns the current
feed-forward clock parameter estimates and ffclock_setestimate() updates the
feed-forward clock parameter estimates.
- Document the syscalls in the ffclock.2 man page.
- Regenerate the script-derived syscall related files.
Committed on behalf of Julien Ridoux and Darryl Veitch from the University of
Melbourne, Australia, as part of the FreeBSD Foundation funded "Feed-Forward
Clock Synchronization Algorithms" project.
For more information, see http://www.synclab.org/radclock/
Submitted by: Julien Ridoux (jridoux at unimelb edu au)
Notes
Notes:
svn path=/head/; revision=227776
Diffstat (limited to 'sys/kern/systrace_args.c')
| -rw-r--r-- | sys/kern/systrace_args.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sys/kern/systrace_args.c b/sys/kern/systrace_args.c index 0933685d38fa..4a5d72a983f1 100644 --- a/sys/kern/systrace_args.c +++ b/sys/kern/systrace_args.c @@ -1337,6 +1337,27 @@ systrace_args(int sysnum, void *params, uint64_t *uarg, int *n_args) *n_args = 2; break; } + /* ffclock_getcounter */ + case 241: { + struct ffclock_getcounter_args *p = params; + uarg[0] = (intptr_t) p->ffcount; /* ffcounter * */ + *n_args = 1; + break; + } + /* ffclock_setestimate */ + case 242: { + struct ffclock_setestimate_args *p = params; + uarg[0] = (intptr_t) p->cest; /* struct ffclock_estimate * */ + *n_args = 1; + break; + } + /* ffclock_getestimate */ + case 243: { + struct ffclock_getestimate_args *p = params; + uarg[0] = (intptr_t) p->cest; /* struct ffclock_estimate * */ + *n_args = 1; + break; + } /* ntp_gettime */ case 248: { struct ntp_gettime_args *p = params; @@ -5381,6 +5402,36 @@ systrace_entry_setargdesc(int sysnum, int ndx, char *desc, size_t descsz) break; }; break; + /* ffclock_getcounter */ + case 241: + switch(ndx) { + case 0: + p = "ffcounter *"; + break; + default: + break; + }; + break; + /* ffclock_setestimate */ + case 242: + switch(ndx) { + case 0: + p = "struct ffclock_estimate *"; + break; + default: + break; + }; + break; + /* ffclock_getestimate */ + case 243: + switch(ndx) { + case 0: + p = "struct ffclock_estimate *"; + break; + default: + break; + }; + break; /* ntp_gettime */ case 248: switch(ndx) { @@ -9398,6 +9449,21 @@ systrace_return_setargdesc(int sysnum, int ndx, char *desc, size_t descsz) if (ndx == 0 || ndx == 1) p = "int"; break; + /* ffclock_getcounter */ + case 241: + if (ndx == 0 || ndx == 1) + p = "int"; + break; + /* ffclock_setestimate */ + case 242: + if (ndx == 0 || ndx == 1) + p = "int"; + break; + /* ffclock_getestimate */ + case 243: + if (ndx == 0 || ndx == 1) + p = "int"; + break; /* ntp_gettime */ case 248: if (ndx == 0 || ndx == 1) |