diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/kprobes-arm.c | 4 | ||||
| -rw-r--r-- | arch/arm/kernel/kprobes-test-arm.c | 27 | ||||
| -rw-r--r-- | arch/arm/kernel/kprobes-test-thumb.c | 16 | ||||
| -rw-r--r-- | arch/arm/kernel/kprobes-test.h | 100 | ||||
| -rw-r--r-- | arch/arm/kernel/perf_event.c | 17 | ||||
| -rw-r--r-- | arch/arm/kernel/pmu.c | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/process.c | 3 | ||||
| -rw-r--r-- | arch/arm/kernel/topology.c | 2 |
9 files changed, 117 insertions, 55 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 9ad50c4208ae..b145f16c91bc 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -497,7 +497,7 @@ ENDPROC(__und_usr) .popsection .pushsection __ex_table,"a" .long 1b, 4b -#if __LINUX_ARM_ARCH__ >= 7 +#if CONFIG_ARM_THUMB && __LINUX_ARM_ARCH__ >= 6 && CONFIG_CPU_V7 .long 2b, 4b .long 3b, 4b #endif diff --git a/arch/arm/kernel/kprobes-arm.c b/arch/arm/kernel/kprobes-arm.c index 9fe8910308af..8a30c89da70e 100644 --- a/arch/arm/kernel/kprobes-arm.c +++ b/arch/arm/kernel/kprobes-arm.c @@ -519,10 +519,12 @@ static const union decode_item arm_cccc_0000_____1001_table[] = { static const union decode_item arm_cccc_0001_____1001_table[] = { /* Synchronization primitives */ +#if __LINUX_ARM_ARCH__ < 6 + /* Deprecated on ARMv6 and may be UNDEFINED on v7 */ /* SMP/SWPB cccc 0001 0x00 xxxx xxxx xxxx 1001 xxxx */ DECODE_EMULATEX (0x0fb000f0, 0x01000090, emulate_rd12rn16rm0_rwflags_nopc, REGS(NOPC, NOPC, 0, 0, NOPC)), - +#endif /* LDREX/STREX{,D,B,H} cccc 0001 1xxx xxxx xxxx xxxx 1001 xxxx */ /* And unallocated instructions... */ DECODE_END diff --git a/arch/arm/kernel/kprobes-test-arm.c b/arch/arm/kernel/kprobes-test-arm.c index fc82de8bdcce..ba32b393b3f0 100644 --- a/arch/arm/kernel/kprobes-test-arm.c +++ b/arch/arm/kernel/kprobes-test-arm.c @@ -427,18 +427,25 @@ void kprobe_arm_test_cases(void) TEST_GROUP("Synchronization primitives") - /* - * Use hard coded constants for SWP instructions to avoid warnings - * about deprecated instructions. - */ - TEST_RP( ".word 0xe108e097 @ swp lr, r",7,VAL2,", [r",8,0,"]") - TEST_R( ".word 0x610d0091 @ swpvs r0, r",1,VAL1,", [sp]") - TEST_RP( ".word 0xe10cd09e @ swp sp, r",14,VAL2,", [r",12,13*4,"]") +#if __LINUX_ARM_ARCH__ < 6 + TEST_RP("swp lr, r",7,VAL2,", [r",8,0,"]") + TEST_R( "swpvs r0, r",1,VAL1,", [sp]") + TEST_RP("swp sp, r",14,VAL2,", [r",12,13*4,"]") +#else + TEST_UNSUPPORTED(".word 0xe108e097 @ swp lr, r7, [r8]") + TEST_UNSUPPORTED(".word 0x610d0091 @ swpvs r0, r1, [sp]") + TEST_UNSUPPORTED(".word 0xe10cd09e @ swp sp, r14 [r12]") +#endif TEST_UNSUPPORTED(".word 0xe102f091 @ swp pc, r1, [r2]") TEST_UNSUPPORTED(".word 0xe102009f @ swp r0, pc, [r2]") TEST_UNSUPPORTED(".word 0xe10f0091 @ swp r0, r1, [pc]") - TEST_RP( ".word 0xe148e097 @ swpb lr, r",7,VAL2,", [r",8,0,"]") - TEST_R( ".word 0x614d0091 @ swpvsb r0, r",1,VAL1,", [sp]") +#if __LINUX_ARM_ARCH__ < 6 + TEST_RP("swpb lr, r",7,VAL2,", [r",8,0,"]") + TEST_R( "swpvsb r0, r",1,VAL1,", [sp]") +#else + TEST_UNSUPPORTED(".word 0xe148e097 @ swpb lr, r7, [r8]") + TEST_UNSUPPORTED(".word 0x614d0091 @ swpvsb r0, r1, [sp]") +#endif TEST_UNSUPPORTED(".word 0xe142f091 @ swpb pc, r1, [r2]") TEST_UNSUPPORTED(".word 0xe1100090") /* Unallocated space */ @@ -550,7 +557,7 @@ void kprobe_arm_test_cases(void) TEST_RPR( "strccd r",8, VAL2,", [r",13,0, ", r",12,48,"]") TEST_RPR( "strd r",4, VAL1,", [r",2, 24,", r",3, 48,"]!") TEST_RPR( "strcsd r",12,VAL2,", [r",11,48,", -r",10,24,"]!") - TEST_RPR( "strd r",2, VAL1,", [r",3, 24,"], r",4,48,"") + TEST_RPR( "strd r",2, VAL1,", [r",5, 24,"], r",4,48,"") TEST_RPR( "strd r",10,VAL2,", [r",9, 48,"], -r",7,24,"") TEST_UNSUPPORTED(".word 0xe1afc0fa @ strd r12, [pc, r10]!") diff --git a/arch/arm/kernel/kprobes-test-thumb.c b/arch/arm/kernel/kprobes-test-thumb.c index 5e726c31c45a..5d8b85792222 100644 --- a/arch/arm/kernel/kprobes-test-thumb.c +++ b/arch/arm/kernel/kprobes-test-thumb.c @@ -222,8 +222,8 @@ void kprobe_thumb16_test_cases(void) DONT_TEST_IN_ITBLOCK( TEST_BF_R( "cbnz r",0,0, ", 2f") TEST_BF_R( "cbz r",2,-1,", 2f") - TEST_BF_RX( "cbnz r",4,1, ", 2f",0x20) - TEST_BF_RX( "cbz r",7,0, ", 2f",0x40) + TEST_BF_RX( "cbnz r",4,1, ", 2f", SPACE_0x20) + TEST_BF_RX( "cbz r",7,0, ", 2f", SPACE_0x40) ) TEST_R("sxth r0, r",7, HH1,"") TEST_R("sxth r7, r",0, HH2,"") @@ -246,7 +246,7 @@ DONT_TEST_IN_ITBLOCK( TESTCASE_START(code) \ TEST_ARG_PTR(13, offset) \ TEST_ARG_END("") \ - TEST_BRANCH_F(code,0) \ + TEST_BRANCH_F(code) \ TESTCASE_END TEST("push {r0}") @@ -319,8 +319,8 @@ CONDITION_INSTRUCTIONS(8, TEST_BF( "b 2f") TEST_BB( "b 2b") - TEST_BF_X("b 2f", 0x400) - TEST_BB_X("b 2b", 0x400) + TEST_BF_X("b 2f", SPACE_0x400) + TEST_BB_X("b 2b", SPACE_0x400) TEST_GROUP("Testing instructions in IT blocks") @@ -746,7 +746,7 @@ CONDITION_INSTRUCTIONS(22, TEST_BB("bne.w 2b") TEST_BF("bgt.w 2f") TEST_BB("blt.w 2b") - TEST_BF_X("bpl.w 2f",0x1000) + TEST_BF_X("bpl.w 2f", SPACE_0x1000) ) TEST_UNSUPPORTED("msr cpsr, r0") @@ -786,11 +786,11 @@ CONDITION_INSTRUCTIONS(22, TEST_BF( "b.w 2f") TEST_BB( "b.w 2b") - TEST_BF_X("b.w 2f", 0x1000) + TEST_BF_X("b.w 2f", SPACE_0x1000) TEST_BF( "bl.w 2f") TEST_BB( "bl.w 2b") - TEST_BB_X("bl.w 2b", 0x1000) + TEST_BB_X("bl.w 2b", SPACE_0x1000) TEST_X( "blx __dummy_arm_subroutine", ".arm \n\t" diff --git a/arch/arm/kernel/kprobes-test.h b/arch/arm/kernel/kprobes-test.h index 0dc5d77b9356..e28a869b1ae4 100644 --- a/arch/arm/kernel/kprobes-test.h +++ b/arch/arm/kernel/kprobes-test.h @@ -149,23 +149,31 @@ struct test_arg_end { "1: "instruction" \n\t" \ " nop \n\t" -#define TEST_BRANCH_F(instruction, xtra_dist) \ +#define TEST_BRANCH_F(instruction) \ TEST_INSTRUCTION(instruction) \ - ".if "#xtra_dist" \n\t" \ " b 99f \n\t" \ - ".space "#xtra_dist" \n\t" \ - ".endif \n\t" \ + "2: nop \n\t" + +#define TEST_BRANCH_B(instruction) \ + " b 50f \n\t" \ + " b 99f \n\t" \ + "2: nop \n\t" \ + " b 99f \n\t" \ + TEST_INSTRUCTION(instruction) + +#define TEST_BRANCH_FX(instruction, codex) \ + TEST_INSTRUCTION(instruction) \ + " b 99f \n\t" \ + codex" \n\t" \ " b 99f \n\t" \ "2: nop \n\t" -#define TEST_BRANCH_B(instruction, xtra_dist) \ +#define TEST_BRANCH_BX(instruction, codex) \ " b 50f \n\t" \ " b 99f \n\t" \ "2: nop \n\t" \ " b 99f \n\t" \ - ".if "#xtra_dist" \n\t" \ - ".space "#xtra_dist" \n\t" \ - ".endif \n\t" \ + codex" \n\t" \ TEST_INSTRUCTION(instruction) #define TESTCASE_END \ @@ -301,47 +309,60 @@ struct test_arg_end { TESTCASE_START(code1 #reg1 code2) \ TEST_ARG_PTR(reg1, val1) \ TEST_ARG_END("") \ - TEST_BRANCH_F(code1 #reg1 code2, 0) \ + TEST_BRANCH_F(code1 #reg1 code2) \ TESTCASE_END -#define TEST_BF_X(code, xtra_dist) \ +#define TEST_BF(code) \ TESTCASE_START(code) \ TEST_ARG_END("") \ - TEST_BRANCH_F(code, xtra_dist) \ + TEST_BRANCH_F(code) \ TESTCASE_END -#define TEST_BB_X(code, xtra_dist) \ +#define TEST_BB(code) \ TESTCASE_START(code) \ TEST_ARG_END("") \ - TEST_BRANCH_B(code, xtra_dist) \ + TEST_BRANCH_B(code) \ TESTCASE_END -#define TEST_BF_RX(code1, reg, val, code2, xtra_dist) \ - TESTCASE_START(code1 #reg code2) \ - TEST_ARG_REG(reg, val) \ - TEST_ARG_END("") \ - TEST_BRANCH_F(code1 #reg code2, xtra_dist) \ +#define TEST_BF_R(code1, reg, val, code2) \ + TESTCASE_START(code1 #reg code2) \ + TEST_ARG_REG(reg, val) \ + TEST_ARG_END("") \ + TEST_BRANCH_F(code1 #reg code2) \ TESTCASE_END -#define TEST_BB_RX(code1, reg, val, code2, xtra_dist) \ - TESTCASE_START(code1 #reg code2) \ - TEST_ARG_REG(reg, val) \ - TEST_ARG_END("") \ - TEST_BRANCH_B(code1 #reg code2, xtra_dist) \ +#define TEST_BB_R(code1, reg, val, code2) \ + TESTCASE_START(code1 #reg code2) \ + TEST_ARG_REG(reg, val) \ + TEST_ARG_END("") \ + TEST_BRANCH_B(code1 #reg code2) \ TESTCASE_END -#define TEST_BF(code) TEST_BF_X(code, 0) -#define TEST_BB(code) TEST_BB_X(code, 0) - -#define TEST_BF_R(code1, reg, val, code2) TEST_BF_RX(code1, reg, val, code2, 0) -#define TEST_BB_R(code1, reg, val, code2) TEST_BB_RX(code1, reg, val, code2, 0) - #define TEST_BF_RR(code1, reg1, val1, code2, reg2, val2, code3) \ TESTCASE_START(code1 #reg1 code2 #reg2 code3) \ TEST_ARG_REG(reg1, val1) \ TEST_ARG_REG(reg2, val2) \ TEST_ARG_END("") \ - TEST_BRANCH_F(code1 #reg1 code2 #reg2 code3, 0) \ + TEST_BRANCH_F(code1 #reg1 code2 #reg2 code3) \ + TESTCASE_END + +#define TEST_BF_X(code, codex) \ + TESTCASE_START(code) \ + TEST_ARG_END("") \ + TEST_BRANCH_FX(code, codex) \ + TESTCASE_END + +#define TEST_BB_X(code, codex) \ + TESTCASE_START(code) \ + TEST_ARG_END("") \ + TEST_BRANCH_BX(code, codex) \ + TESTCASE_END + +#define TEST_BF_RX(code1, reg, val, code2, codex) \ + TESTCASE_START(code1 #reg code2) \ + TEST_ARG_REG(reg, val) \ + TEST_ARG_END("") \ + TEST_BRANCH_FX(code1 #reg code2, codex) \ TESTCASE_END #define TEST_X(code, codex) \ @@ -372,6 +393,25 @@ struct test_arg_end { TESTCASE_END +/* + * Macros for defining space directives spread over multiple lines. + * These are required so the compiler guesses better the length of inline asm + * code and will spill the literal pool early enough to avoid generating PC + * relative loads with out of range offsets. + */ +#define TWICE(x) x x +#define SPACE_0x8 TWICE(".space 4\n\t") +#define SPACE_0x10 TWICE(SPACE_0x8) +#define SPACE_0x20 TWICE(SPACE_0x10) +#define SPACE_0x40 TWICE(SPACE_0x20) +#define SPACE_0x80 TWICE(SPACE_0x40) +#define SPACE_0x100 TWICE(SPACE_0x80) +#define SPACE_0x200 TWICE(SPACE_0x100) +#define SPACE_0x400 TWICE(SPACE_0x200) +#define SPACE_0x800 TWICE(SPACE_0x400) +#define SPACE_0x1000 TWICE(SPACE_0x800) + + /* Various values used in test cases... */ #define N(val) (val ^ 0xffffffff) #define VAL1 0x12345678 diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 24e2347be6b1..8e9c98edc068 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -343,19 +343,25 @@ validate_group(struct perf_event *event) { struct perf_event *sibling, *leader = event->group_leader; struct pmu_hw_events fake_pmu; + DECLARE_BITMAP(fake_used_mask, ARMPMU_MAX_HWEVENTS); - memset(&fake_pmu, 0, sizeof(fake_pmu)); + /* + * Initialise the fake PMU. We only need to populate the + * used_mask for the purposes of validation. + */ + memset(fake_used_mask, 0, sizeof(fake_used_mask)); + fake_pmu.used_mask = fake_used_mask; if (!validate_event(&fake_pmu, leader)) - return -ENOSPC; + return -EINVAL; list_for_each_entry(sibling, &leader->sibling_list, group_entry) { if (!validate_event(&fake_pmu, sibling)) - return -ENOSPC; + return -EINVAL; } if (!validate_event(&fake_pmu, event)) - return -ENOSPC; + return -EINVAL; return 0; } @@ -396,6 +402,9 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu) int i, err, irq, irqs; struct platform_device *pmu_device = armpmu->plat_device; + if (!pmu_device) + return -ENODEV; + err = reserve_pmu(armpmu->type); if (err) { pr_warning("unable to reserve pmu\n"); diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c index 2c3407ee8576..2334bf8a650a 100644 --- a/arch/arm/kernel/pmu.c +++ b/arch/arm/kernel/pmu.c @@ -33,3 +33,4 @@ release_pmu(enum arm_pmu_type type) { clear_bit_unlock(type, pmu_lock); } +EXPORT_SYMBOL_GPL(release_pmu); diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 75316f0dd02a..3d0c6fb74ae4 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -192,6 +192,9 @@ void cpu_idle(void) #endif local_irq_disable(); +#ifdef CONFIG_PL310_ERRATA_769419 + wmb(); +#endif if (hlt_counter) { local_irq_enable(); cpu_relax(); diff --git a/arch/arm/kernel/topology.c b/arch/arm/kernel/topology.c index 1040c00405d0..8200deaa14f6 100644 --- a/arch/arm/kernel/topology.c +++ b/arch/arm/kernel/topology.c @@ -43,7 +43,7 @@ struct cputopo_arm cpu_topology[NR_CPUS]; -const struct cpumask *cpu_coregroup_mask(unsigned int cpu) +const struct cpumask *cpu_coregroup_mask(int cpu) { return &cpu_topology[cpu].core_sibling; } |
