mirror of
https://github.com/Qortal/Brooklyn.git
synced 2025-01-30 23:02:18 +00:00
a94b3d14aa
Changes included (and more): 1. Dynamic RAM merge 2. Real-time page scan and allocation 3. Cache compression 4. Real-time IRQ checks 5. Dynamic I/O allocation for Java heap 6. Java page migration 7. Contiguous memory allocation 8. Idle pages tracking 9. Per CPU RAM usage tracking 10. ARM NEON scalar multiplication library 11. NEON/ARMv8 crypto extensions 12. NEON SHA, Blake, RIPEMD crypto extensions 13. Parallel NEON crypto engine for multi-algo based CPU stress reduction
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include "arm64-frame-pointer-unwind-support.h"
|
|
#include "callchain.h"
|
|
#include "event.h"
|
|
#include "perf_regs.h" // SMPL_REG_MASK
|
|
#include "unwind.h"
|
|
|
|
#define perf_event_arm_regs perf_event_arm64_regs
|
|
#include "../../arch/arm64/include/uapi/asm/perf_regs.h"
|
|
#undef perf_event_arm_regs
|
|
|
|
struct entries {
|
|
u64 stack[2];
|
|
size_t length;
|
|
};
|
|
|
|
static bool get_leaf_frame_caller_enabled(struct perf_sample *sample)
|
|
{
|
|
return callchain_param.record_mode == CALLCHAIN_FP && sample->user_regs.regs
|
|
&& sample->user_regs.mask & SMPL_REG_MASK(PERF_REG_ARM64_LR);
|
|
}
|
|
|
|
static int add_entry(struct unwind_entry *entry, void *arg)
|
|
{
|
|
struct entries *entries = arg;
|
|
|
|
entries->stack[entries->length++] = entry->ip;
|
|
return 0;
|
|
}
|
|
|
|
u64 get_leaf_frame_caller_aarch64(struct perf_sample *sample, struct thread *thread, int usr_idx)
|
|
{
|
|
int ret;
|
|
struct entries entries = {};
|
|
struct regs_dump old_regs = sample->user_regs;
|
|
|
|
if (!get_leaf_frame_caller_enabled(sample))
|
|
return 0;
|
|
|
|
/*
|
|
* If PC and SP are not recorded, get the value of PC from the stack
|
|
* and set its mask. SP is not used when doing the unwinding but it
|
|
* still needs to be set to prevent failures.
|
|
*/
|
|
|
|
if (!(sample->user_regs.mask & SMPL_REG_MASK(PERF_REG_ARM64_PC))) {
|
|
sample->user_regs.cache_mask |= SMPL_REG_MASK(PERF_REG_ARM64_PC);
|
|
sample->user_regs.cache_regs[PERF_REG_ARM64_PC] = sample->callchain->ips[usr_idx+1];
|
|
}
|
|
|
|
if (!(sample->user_regs.mask & SMPL_REG_MASK(PERF_REG_ARM64_SP))) {
|
|
sample->user_regs.cache_mask |= SMPL_REG_MASK(PERF_REG_ARM64_SP);
|
|
sample->user_regs.cache_regs[PERF_REG_ARM64_SP] = 0;
|
|
}
|
|
|
|
ret = unwind__get_entries(add_entry, &entries, thread, sample, 2, true);
|
|
sample->user_regs = old_regs;
|
|
|
|
if (ret || entries.length != 2)
|
|
return ret;
|
|
|
|
return callchain_param.order == ORDER_CALLER ? entries.stack[0] : entries.stack[1];
|
|
}
|