diff options
| author | Len Brown <len.brown@intel.com> | 2017-07-15 14:57:37 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2018-06-01 12:13:04 -0400 |
| commit | 8aa2ed0b2839718b9147bb0119a8012217d25a8b (patch) | |
| tree | 5e5ce89d93ea8d180262cf0ed8f2fe78d6959414 /tools | |
| parent | 3f44a5c62be2f2b15317942fa7bc4a810d2420aa (diff) | |
tools/power turbostat: on SIGINT: sample, print and exit
When running in interval-mode, catch interrupts
and print a final data record before exiting.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.8 | 4 | ||||
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 30 |
2 files changed, 34 insertions, 0 deletions
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8 index 04262ab1b78b..2dafba4900ab 100644 --- a/tools/power/x86/turbostat/turbostat.8 +++ b/tools/power/x86/turbostat/turbostat.8 @@ -267,6 +267,10 @@ CPU PRF_CTRL .fi +.SH SIGNALS + +SIGINT will interrupt interval-mode. +The end-of-interval data will be collected and displayed before turbostat exits. .SH NOTES .B "turbostat " diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 627e5749d7d1..d9703b728fbb 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2600,11 +2600,37 @@ int snapshot_proc_sysfs_files(void) return 0; } +int exit_requested; + +static void signal_handler (int signal) +{ + switch (signal) { + case SIGINT: + exit_requested = 1; + if (debug) + fprintf(stderr, " SIGINT\n"); + break; + } +} + +void setup_signal_handler(void) +{ + struct sigaction sa; + + memset(&sa, 0, sizeof(sa)); + + sa.sa_handler = &signal_handler; + + if (sigaction(SIGINT, &sa, NULL) < 0) + err(1, "sigaction SIGINT"); +} void turbostat_loop() { int retval; int restarted = 0; + setup_signal_handler(); + restart: restarted++; @@ -2646,6 +2672,8 @@ restart: compute_average(EVEN_COUNTERS); format_all_counters(EVEN_COUNTERS); flush_output_stdout(); + if (exit_requested) + break; nanosleep(&interval_ts, NULL); if (snapshot_proc_sysfs_files()) goto restart; @@ -2665,6 +2693,8 @@ restart: compute_average(ODD_COUNTERS); format_all_counters(ODD_COUNTERS); flush_output_stdout(); + if (exit_requested) + break; } } |