Commit 0eee08dbddea520536197657da7a0b (perf-counter: simplify the
performance macro) introduces the PERF macro, which is empty for non-linux
platforms.
Added to commit bc487aeff2 (ovsdb: Add per
transaction commit instruction counter), that uses such macro, it causes
segfaults, since it makes ovsdb_txn_commit return an uninitialized pointer as
error.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
[blp@nicira.com added {} around the macro expansion]
Signed-off-by: Ben Pfaff <blp@nicira.com>
Replace the original PERF_FUNCTION_BEGIN and PERF_FUNCTION_END
pair with a single PERF macro. This design is also more flexible,
removing the restriction of have only one measurement per function.
The next patch will make use of this macro.
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
Unit tests "corrupted database log" and "database log with bad
transaction" will fail without this patch.
Reported-by: Ansis Atteka <aatteka@nicira.com>¬
Signed-off-by: Andy Zhou <azhou@nicira.com>
Older Linux prior to version 2.6.32 do not support user mode
performance events, They also don't have 'linux/perf_event.h' header
file. Add check for those older Linux to conditionally compile
perf-counter.c
Reported-by: Alex Wang <alexw@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Alex Wang <alexw@nicira.com>
First cut of adding a performance library that provides access to
hardware counters. Please see comments in perf-counter.h for
more details.
Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
