d78940ec5d
The PLIC previously used a mutex to protect against concurrent access to the claimed and pending bitfields. Instead of using a mutex, we update the bitfields using atomic_cmpxchg. Rename sifive_plic_num_irqs_pending to sifive_plic_irqs_pending and add an early out if any interrupts are pending as the count of pending interrupts is not used. Cc: Sagar Karandikar <sagark@eecs.berkeley.edu> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Alistair Francis <Alistair.Francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alistair Francis <alistair.francis@wdc.com> |
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| .. | ||
| Makefile.objs | ||
| riscv_hart.c | ||
| riscv_htif.c | ||
| sifive_clint.c | ||
| sifive_e.c | ||
| sifive_plic.c | ||
| sifive_prci.c | ||
| sifive_test.c | ||
| sifive_u.c | ||
| sifive_uart.c | ||
| spike.c | ||
| virt.c | ||