diff options
| author | Michael Brown | 2014-05-03 19:25:19 +0200 |
|---|---|---|
| committer | Michael Brown | 2014-05-03 19:50:26 +0200 |
| commit | a0da06c306f4c106136909ad149204005fe82ab1 (patch) | |
| tree | 2278e138c0d70ee4f950fd0e4587149184f6dd45 /src/include/ipxe | |
| parent | [librm] Speed up protected-mode calls under KVM (diff) | |
| download | ipxe-a0da06c306f4c106136909ad149204005fe82ab1.tar.gz ipxe-a0da06c306f4c106136909ad149204005fe82ab1.tar.xz ipxe-a0da06c306f4c106136909ad149204005fe82ab1.zip | |
[profile] Provide methods for profiling individual stages of operations
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include/ipxe')
| -rw-r--r-- | src/include/ipxe/profile.h | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/src/include/ipxe/profile.h b/src/include/ipxe/profile.h index 0b15fe54..d4fc4f90 100644 --- a/src/include/ipxe/profile.h +++ b/src/include/ipxe/profile.h @@ -9,7 +9,6 @@ FILE_LICENCE ( GPL2_OR_LATER ); -#include <stdint.h> #include <bits/profile.h> #include <ipxe/tables.h> @@ -26,7 +25,9 @@ struct profiler { /** Name */ const char *name; /** Start timestamp */ - uint64_t started; + unsigned long started; + /** Stop timestamp */ + unsigned long stopped; /** Number of samples */ unsigned int count; /** Mean sample value (scaled) */ @@ -66,29 +67,56 @@ extern unsigned long profile_stddev ( struct profiler *profiler ); * Start profiling * * @v profiler Profiler + * @v started Start timestamp + */ +static inline __attribute__ (( always_inline )) void +profile_start_at ( struct profiler *profiler, unsigned long started ) { + + /* If profiling is active then record start timestamp */ + if ( PROFILING ) + profiler->started = started; +} + +/** + * Start profiling + * + * @v profiler Profiler */ static inline __attribute__ (( always_inline )) void profile_start ( struct profiler *profiler ) { /* If profiling is active then record start timestamp */ if ( PROFILING ) - profiler->started = profile_timestamp(); + profile_start_at ( profiler, profile_timestamp() ); } /** * Record profiling result * * @v profiler Profiler + * @v stopped Stop timestamp */ static inline __attribute__ (( always_inline )) void -profile_stop ( struct profiler *profiler ) { - uint64_t ended; +profile_stop_at ( struct profiler *profiler, unsigned long stopped ) { /* If profiling is active then record end timestamp and update stats */ if ( PROFILING ) { - ended = profile_timestamp(); - profile_update ( profiler, ( ended - profiler->started ) ); + profiler->stopped = stopped; + profile_update ( profiler, ( stopped - profiler->started ) ); } } +/** + * Record profiling result + * + * @v profiler Profiler + */ +static inline __attribute__ (( always_inline )) void +profile_stop ( struct profiler *profiler ) { + + /* If profiling is active then record end timestamp and update stats */ + if ( PROFILING ) + profile_stop_at ( profiler, profile_timestamp() ); +} + #endif /* _IPXE_PROFILE_H */ |