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include: Make sbi_current_hartid() as macro in riscv_asm.h

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The sbi_current_hartid() being a regular function is quite
expensive because for callers it is a function call instead
of a direct CSR read. This patch converts sbi_current_hartid()
into a macro in riscv_asm.h.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-03-12 10:21:25 +05:30
committed by Anup Patel
parent 16e7071f6d
commit 823345ecae
20 changed files with 49 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
lib/sbi/sbi_ecall_legacy.c
View File

@@ -8,6 +8,7 @@
* Atish Patra <atish.patra@wdc.com>
*/
#include <sbi/riscv_asm.h>
#include <sbi/sbi_console.h>
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_ecall_interface.h>
@@ -46,7 +47,7 @@ static int sbi_ecall_legacy_handler(struct sbi_scratch *scratch,
{
int ret = 0;
struct sbi_tlb_info tlb_info;
u32 source_hart = sbi_current_hartid();
u32 source_hart = current_hartid();
ulong hmask = 0;
switch (extid) {

4
lib/sbi/sbi_ecall_replace.c
View File

@@ -8,6 +8,7 @@
* Atish Patra <atish.patra@wdc.com>
*/
#include <sbi/riscv_asm.h>
#include <sbi/sbi_ecall.h>
#include <sbi/sbi_ecall_interface.h>
#include <sbi/sbi_error.h>
@@ -15,7 +16,6 @@
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_timer.h>
#include <sbi/sbi_tlb.h>
#include <sbi/riscv_asm.h>
static int sbi_ecall_time_handler(struct sbi_scratch *scratch,
unsigned long extid, unsigned long funcid,
@@ -50,7 +50,7 @@ static int sbi_ecall_rfence_handler(struct sbi_scratch *scratch,
{
int ret = 0;
struct sbi_tlb_info tlb_info;
u32 source_hart = sbi_current_hartid();
u32 source_hart = current_hartid();
if (funcid >= SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA &&
funcid <= SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID)

8
lib/sbi/sbi_hart.c
View File

@@ -17,14 +17,6 @@
#include <sbi/sbi_hart.h>
#include <sbi/sbi_platform.h>
/**
* Return HART ID of the caller.
*/
unsigned int sbi_current_hartid()
{
return (u32)csr_read(CSR_MHARTID);
}
static void mstatus_init(struct sbi_scratch *scratch, u32 hartid)
{
const struct sbi_platform *plat = sbi_platform_ptr(scratch);

4
lib/sbi/sbi_hsm.c
View File

@@ -204,7 +204,7 @@ void __noreturn sbi_hsm_exit(struct sbi_scratch *scratch)
fail_exit:
/* It should never reach here */
sbi_printf("ERR: Failed stop hart [%u]\n", sbi_current_hartid());
sbi_printf("ERR: Failed stop hart [%u]\n", current_hartid());
sbi_hart_hang();
}
@@ -256,7 +256,7 @@ int sbi_hsm_hart_start(struct sbi_scratch *scratch, u32 hartid,
int sbi_hsm_hart_stop(struct sbi_scratch *scratch, bool exitnow)
{
int oldstate;
u32 hartid = sbi_current_hartid();
u32 hartid = current_hartid();
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
struct sbi_hsm_data *hdata = sbi_scratch_offset_ptr(scratch,
hart_data_offset);

4
lib/sbi/sbi_init.c
View File

@@ -273,7 +273,7 @@ static atomic_t coldboot_lottery = ATOMIC_INITIALIZER(0);
void __noreturn sbi_init(struct sbi_scratch *scratch)
{
bool coldboot = FALSE;
u32 hartid = sbi_current_hartid();
u32 hartid = current_hartid();
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
if ((SBI_HARTMASK_MAX_BITS <= hartid) ||
@@ -316,7 +316,7 @@ unsigned long sbi_init_count(u32 hartid)
*/
void __noreturn sbi_exit(struct sbi_scratch *scratch)
{
u32 hartid = sbi_current_hartid();
u32 hartid = current_hartid();
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
if (sbi_platform_hart_disabled(plat, hartid))

2
lib/sbi/sbi_ipi.c
View File

@@ -176,7 +176,7 @@ void sbi_ipi_process(struct sbi_scratch *scratch)
struct sbi_ipi_data *ipi_data =
sbi_scratch_offset_ptr(scratch, ipi_data_off);
u32 hartid = sbi_current_hartid();
u32 hartid = current_hartid();
sbi_platform_ipi_clear(plat, hartid);
ipi_type = atomic_raw_xchg_ulong(&ipi_data->ipi_type, 0);

13
lib/sbi/sbi_system.c
View File

@@ -8,6 +8,7 @@
* Nick Kossifidis <mick@ics.forth.gr>
*/
#include <sbi/riscv_asm.h>
#include <sbi/sbi_bitops.h>
#include <sbi/sbi_hart.h>
#include <sbi/sbi_hsm.h>
@@ -39,12 +40,12 @@ void sbi_system_final_exit(struct sbi_scratch *scratch)
void __noreturn sbi_system_reboot(struct sbi_scratch *scratch, u32 type)
{
ulong hbase = 0, hmask;
u32 current_hartid = sbi_current_hartid();
u32 cur_hartid = current_hartid();
/* Send HALT IPI to every hart other than the current hart */
while (!sbi_hsm_hart_started_mask(scratch, hbase, &hmask)) {
if (hbase <= current_hartid)
hmask &= ~(1UL << (current_hartid - hbase));
if (hbase <= cur_hartid)
hmask &= ~(1UL << (cur_hartid - hbase));
if (hmask)
sbi_ipi_send_halt(scratch, hmask, hbase);
hbase += BITS_PER_LONG;
@@ -63,12 +64,12 @@ void __noreturn sbi_system_reboot(struct sbi_scratch *scratch, u32 type)
void __noreturn sbi_system_shutdown(struct sbi_scratch *scratch, u32 type)
{
ulong hbase = 0, hmask;
u32 current_hartid = sbi_current_hartid();
u32 cur_hartid = current_hartid();
/* Send HALT IPI to every hart other than the current hart */
while (!sbi_hsm_hart_started_mask(scratch, hbase, &hmask)) {
if (hbase <= current_hartid)
hmask &= ~(1UL << (current_hartid - hbase));
if (hbase <= cur_hartid)
hmask &= ~(1UL << (cur_hartid - hbase));
if (hmask)
sbi_ipi_send_halt(scratch, hmask, hbase);
hbase += BITS_PER_LONG;

2
lib/sbi/sbi_tlb.c
View File

@@ -319,7 +319,7 @@ static int sbi_tlb_update(struct sbi_scratch *scratch,
int ret;
struct sbi_fifo *tlb_fifo_r;
struct sbi_tlb_info *tinfo = data;
u32 curr_hartid = sbi_current_hartid();
u32 curr_hartid = current_hartid();
/*
* If address range to flush is too big then simply

2
lib/sbi/sbi_trap.c
View File

@@ -217,7 +217,7 @@ void sbi_trap_handler(struct sbi_trap_regs *regs,
{
int rc = SBI_ENOTSUPP;
const char *msg = "trap handler failed";
u32 hartid = sbi_current_hartid();
u32 hartid = current_hartid();
ulong mcause = csr_read(CSR_MCAUSE);
ulong mtval = csr_read(CSR_MTVAL), mtval2 = 0, mtinst = 0;
struct sbi_trap_info trap, *uptrap;