LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

perf_event_open.2: E2BIG documentation 

The following documents the E2BIG error return for
perf_event_open().

I actually ran into this error the hard way and it took me
half a day to figure out why my ->size value was changing.

Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Vince Weaver 2013-10-10 17:20:25 -04:00 committed by Michael Kerrisk
parent b5dedda7d3
commit 82b09254af
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
man2/perf_event_open.2
View File

@ -2121,6 +2121,21 @@ returns the new file descriptor, or \-1 if an error occurred
is set appropriately). is set appropriately).
.SH ERRORS .SH ERRORS
.TP .TP
.B E2BIG
Returned if the perf_event_attr
.I size
value is too small
(smaller than
.BR PERF_ATTR_SIZE_VER0 ),
too big (larger than the page size),
or larger than the kernel supports and the extra bytes are not zero.
When
.B E2BIG
is returned, the perf_event_attr
.I size
field is over-written by the kernel to be the size of the structure
it was expecting.
.TP
.B EINVAL .B EINVAL
Returned if the specified event is not available. Returned if the specified event is not available.
.TP .TP