/* ADJ_FREQ Skew change test * by: john stultz (johnstul@us.ibm.com) * (C) Copyright IBM 2012 * Licensed under the GPLv2 * * NOTE: This is a meta-test which cranks the ADJ_FREQ knob and * then uses other tests to detect problems. Thus this test requires * that the raw_skew, inconsistency-check and nanosleep tests be * present in the same directory it is run from. * * To build: * $ gcc change_skew.c -o change_skew -lrt * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #ifdef KTEST #include "../kselftest.h" #else static inline int ksft_exit_pass(void) { exit(0); } static inline int ksft_exit_fail(void) { exit(1); } #endif #define NSEC_PER_SEC 1000000000LL int change_skew_test(int ppm) { struct timex tx; int ret; tx.modes = ADJ_FREQUENCY; tx.freq = ppm << 16; ret = adjtimex(&tx); if (ret < 0) { printf("Error adjusting freq\n"); return ret; } ret = system("./raw_skew"); ret |= system("./inconsistency-check"); ret |= system("./nanosleep"); return ret; } int main(int argv, char **argc) { struct timex tx; int i, ret; int ppm[5] = {0, 250, 500, -250, -500}; /* Kill ntpd */ ret = system("killall -9 ntpd"); /* Make sure there's no offset adjustment going on */ tx.modes = ADJ_OFFSET; tx.offset = 0; ret = adjtimex(&tx); if (ret < 0) { printf("Maybe you're not running as root?\n"); return -1; } for (i = 0; i < 5; i++) { printf("Using %i ppm adjustment\n", ppm[i]); ret = change_skew_test(ppm[i]); if (ret) break; } /* Set things back */ tx.modes = ADJ_FREQUENCY; tx.offset = 0; adjtimex(&tx); if (ret) { printf("[FAIL]"); return ksft_exit_fail(); } printf("[OK]"); return ksft_exit_pass(); } ild-id.h'>
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authorPeter Zijlstra <peterz@infradead.org>2017-01-26 23:15:08 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-30 11:41:26 +0100
commit0b3589be9b98994ce3d5aeca52445d1f5627c4ba (patch)
tree85d0d9b3ac902af2c938b19a566884caf8d00323 /tools/perf/util/build-id.h
parenta76a82a3e38c8d3fb6499e3dfaeb0949241ab588 (diff)
perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory
Andres reported that MMAP2 records for anonymous memory always have their protection field 0. Turns out, someone daft put the prot/flags generation code in the file branch, leaving them unset for anonymous memory. Reported-by: Andres Freund <andres@anarazel.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Don Zickus <dzickus@redhat.com Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: anton@ozlabs.org Cc: namhyung@kernel.org Cc: stable@vger.kernel.org # v3.16+ Fixes: f972eb63b100 ("perf: Pass protection and flags bits through mmap2 interface") Link: http://lkml.kernel.org/r/20170126221508.GF6536@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/util/build-id.h')