linux-kernel - [PATCH 01/42] tools/nolibc: use pselect6 on RISCV

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Date:   Mon,  7 Feb 2022 17:23:13 +0100
From:   Willy Tarreau <w@....eu>
To:     "Paul E . McKenney" <paulmck@...nel.org>
Cc:     Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        Willy Tarreau <w@....eu>
Subject: [PATCH 01/42] tools/nolibc: use pselect6 on RISCV

This arch doesn't provide the old-style select() syscall, we have to
use pselect6().

Signed-off-by: Willy Tarreau <w@....eu>
---
 tools/include/nolibc/nolibc.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index c1c285fe494a..ad23712f9cb5 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -1256,7 +1256,10 @@ struct sys_stat_struct {
  *   - the arguments are cast to long and assigned into the target
  *     registers which are then simply passed as registers to the asm code,
  *     so that we don't have to experience issues with register constraints.
+ *
+ * On riscv, select() is not implemented so we have to use pselect6().
  */
+#define __ARCH_WANT_SYS_PSELECT6
 
 #define my_syscall0(num)                                                      \
 ({                                                                            \
-- 
2.35.1