/* * Copyright 2015, Sam Bobroff, IBM Corp. * Licensed under GPLv2. * * Test the kernel's system call code to ensure that a system call * made from within an active HTM transaction is aborted with the * correct failure code. * Conversely, ensure that a system call made from within a * suspended transaction can succeed. */ #include #include #include #include #include #include #include "utils.h" #include "tm.h" extern int getppid_tm_active(void); extern int getppid_tm_suspended(void); unsigned retries = 0; #define TEST_DURATION 10 /* seconds */ #define TM_RETRIES 100 pid_t getppid_tm(bool suspend) { int i; pid_t pid; for (i = 0; i < TM_RETRIES; i++) { if (suspend) pid = getppid_tm_suspended(); else pid = getppid_tm_active(); if (pid >= 0) return pid; if (failure_is_persistent()) { if (failure_is_syscall()) return -1; printf("Unexpected persistent transaction failure.\n"); printf("TEXASR 0x%016lx, TFIAR 0x%016lx.\n", __builtin_get_texasr(), __builtin_get_tfiar()); exit(-1); } retries++; } printf("Exceeded limit of %d temporary transaction failures.\n", TM_RETRIES); printf("TEXASR 0x%016lx, TFIAR 0x%016lx.\n", __builtin_get_texasr(), __builtin_get_tfiar()); exit(-1); } int tm_syscall(void) { unsigned count = 0; struct timeval end, now; SKIP_IF(!have_htm_nosc()); setbuf(stdout, NULL); printf("Testing transactional syscalls for %d seconds...\n", TEST_DURATION); gettimeofday(&end, NULL); now.tv_sec = TEST_DURATION; now.tv_usec = 0; timeradd(&end, &now, &end); for (count = 0; timercmp(&now, &end, <); count++) { /* * Test a syscall within a suspended transaction and verify * that it succeeds. */ FAIL_IF(getppid_tm(true) == -1); /* Should succeed. */ /* * Test a syscall within an active transaction and verify that * it fails with the correct failure code. */ FAIL_IF(getppid_tm(false) != -1); /* Should fail... */ FAIL_IF(!failure_is_persistent()); /* ...persistently... */ FAIL_IF(!failure_is_syscall()); /* ...with code syscall. */ gettimeofday(&now, 0); } printf("%d active and suspended transactions behaved correctly.\n", count); printf("(There were %d transaction retries.)\n", retries); return 0; } int main(void) { return test_harness(tm_syscall, "tm_syscall"); } tion value='grep'>log msg
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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 /sound/soc/atmel/atmel_wm8904.c
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 'sound/soc/atmel/atmel_wm8904.c')