Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Benjamin Herrenschmidt |
33 |
37.50% |
2 |
16.67% |
| Steven Rostedt |
23 |
26.14% |
1 |
8.33% |
| Ingo Molnar |
19 |
21.59% |
1 |
8.33% |
| Anton Blanchard |
3 |
3.41% |
2 |
16.67% |
| Tiejun Chen |
2 |
2.27% |
1 |
8.33% |
| Michael Ellerman |
2 |
2.27% |
1 |
8.33% |
| Madhavan Srinivasan |
2 |
2.27% |
1 |
8.33% |
| Stephen Rothwell |
2 |
2.27% |
1 |
8.33% |
| David Howells |
1 |
1.14% |
1 |
8.33% |
| Greg Kroah-Hartman |
1 |
1.14% |
1 |
8.33% |
| Total |
88 |
|
12 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* IRQ flags handling
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
/*
* Get definitions for arch_local_save_flags(x), etc.
*/
#include <asm/hw_irq.h>
#else
#ifdef CONFIG_TRACE_IRQFLAGS
#ifdef CONFIG_IRQSOFF_TRACER
/*
* Since the ftrace irqsoff latency trace checks CALLER_ADDR1,
* which is the stack frame here, we need to force a stack frame
* in case we came from user space.
*/
#define TRACE_WITH_FRAME_BUFFER(func) \
mflr r0; \
stdu r1, -STACK_FRAME_OVERHEAD(r1); \
std r0, 16(r1); \
stdu r1, -STACK_FRAME_OVERHEAD(r1); \
bl func; \
ld r1, 0(r1); \
ld r1, 0(r1);
#else
#define TRACE_WITH_FRAME_BUFFER(func) \
bl func;
#endif
/*
* These are calls to C code, so the caller must be prepared for volatiles to
* be clobbered.
*/
#define TRACE_ENABLE_INTS TRACE_WITH_FRAME_BUFFER(trace_hardirqs_on)
#define TRACE_DISABLE_INTS TRACE_WITH_FRAME_BUFFER(trace_hardirqs_off)
/*
* This is used by assembly code to soft-disable interrupts first and
* reconcile irq state.
*
* NB: This may call C code, so the caller must be prepared for volatiles to
* be clobbered.
*/
#define RECONCILE_IRQ_STATE(__rA, __rB) \
lbz __rA,PACAIRQSOFTMASK(r13); \
lbz __rB,PACAIRQHAPPENED(r13); \
andi. __rA,__rA,IRQS_DISABLED; \
li __rA,IRQS_DISABLED; \
ori __rB,__rB,PACA_IRQ_HARD_DIS; \
stb __rB,PACAIRQHAPPENED(r13); \
bne 44f; \
stb __rA,PACAIRQSOFTMASK(r13); \
TRACE_DISABLE_INTS; \
44:
#else
#define TRACE_ENABLE_INTS
#define TRACE_DISABLE_INTS
#define RECONCILE_IRQ_STATE(__rA, __rB) \
lbz __rA,PACAIRQHAPPENED(r13); \
li __rB,IRQS_DISABLED; \
ori __rA,__rA,PACA_IRQ_HARD_DIS; \
stb __rB,PACAIRQSOFTMASK(r13); \
stb __rA,PACAIRQHAPPENED(r13)
#endif
#endif
#endif