File 7221-Eliminate-the-temporary-buffer-for-binary-... of Package erlang

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File 7221-Eliminate-the-temporary-buffer-for-binary-constructi.patch of Package erlang (Revision b4f72044e1af8cfe32130ab849a401a1)

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From 9256aad02f77bc4ca8c2ed5a4b41d5cad834fad1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Wed, 14 Jun 2023 06:56:53 +0200
Subject: [PATCH] Eliminate the temporary buffer for binary construction

In the old non-SMP emulator there was one global temporary buffer.
In the SMP emulator, there is one per scheduler thread, which
reduces the possibility for reuse and potentially wastes memory.

As well as saving some memory, the rewritten operation are also
slightly faster.
---
 erts/emulator/beam/erl_alloc.c                |   5 -
 erts/emulator/beam/erl_bits.c                 | 516 ++++++++++--------
 erts/emulator/beam/erl_bits.h                 |  12 -
 erts/emulator/beam/erl_init.c                 |   1 -
 erts/emulator/beam/erl_process.c              |   2 -
 erts/emulator/beam/jit/arm/process_main.cpp   |   3 -
 erts/emulator/beam/jit/x86/process_main.cpp   |   3 -
 erts/emulator/valgrind/suppress.patched.3.6.0 |  15 -
 8 files changed, 279 insertions(+), 278 deletions(-)

diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index 8233eb9310..703d7bdc28 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -2641,11 +2641,6 @@ erts_allocated_areas(fmtfn_t *print_to_p, void *print_to_arg, void *proc)
     values[i].ui[0] = erts_node_table_size();
     i++;
 
-    values[i].arity = 2;
-    values[i].name = "bits_bufs_size";
-    values[i].ui[0] = erts_bits_bufs_size();
-    i++;
-
     values[i].arity = 2;
     values[i].name = "bif_timer";
     values[i].ui[0] = erts_bif_timer_memory_size();
diff --git a/erts/emulator/beam/erl_bits.c b/erts/emulator/beam/erl_bits.c
index f8f8c0a472..541753f9e2 100644
--- a/erts/emulator/beam/erl_bits.c
+++ b/erts/emulator/beam/erl_bits.c
@@ -83,46 +83,6 @@ static byte get_bit(byte b, size_t a_offs);
 #define GROW_PROC_BIN_SIZE(size) \
     (((size) > (1ull << 24)) ? 1.2*(size) : 2*(size))
 
-/* the state resides in the current process' scheduler data */
-
-#define byte_buf	(ErlBitsState.byte_buf_)
-#define byte_buf_len	(ErlBitsState.byte_buf_len_)
-
-static erts_atomic_t bits_bufs_size;
-
-Uint
-erts_bits_bufs_size(void)
-{
-    return (Uint) erts_atomic_read_nob(&bits_bufs_size);
-}
-
-void
-erts_bits_init_state(ERL_BITS_PROTO_0)
-{
-    byte_buf_len = 1;
-    byte_buf = erts_alloc(ERTS_ALC_T_BITS_BUF, byte_buf_len);
-
-    erts_bin_offset = 0;
-}
-
-void
-erts_bits_destroy_state(ERL_BITS_PROTO_0)
-{
-    erts_free(ERTS_ALC_T_BITS_BUF, byte_buf);
-}
-
-void
-erts_init_bits(void)
-{
-    ERTS_CT_ASSERT(offsetof(Binary,orig_bytes) % 8 == 0);
-    ERTS_CT_ASSERT(offsetof(ErtsMagicBinary,u.aligned.data) % 8 == 0);
-    ERTS_CT_ASSERT(offsetof(ErtsBinary,driver.binary.orig_bytes)
-                == offsetof(Binary,orig_bytes));
-
-    erts_atomic_init_nob(&bits_bufs_size, 0);
-    /* erl_process.c calls erts_bits_init_state() on all state instances */
-}
-
 /*****************************************************************
  ***
  *** New matching binaries functions
@@ -614,6 +574,33 @@ erts_bs_get_binary_all_2(Process *p, ErlBinMatchBuffer* mb)
    } \
  } while(0)
 
+static void
+fmt_small(byte *buf, Uint num_bytes, Eterm arg, Uint num_bits, Uint flags)
+{
+    Uint bit_offset;
+    Sint val;
+
+    ASSERT(is_small(val));
+    ASSERT(num_bits != 0);      /* Tested by caller */
+
+    bit_offset = BIT_OFFSET(num_bits);
+    val = signed_val(arg);
+
+    if (flags & BSF_LITTLE) { /* Little endian */
+        num_bytes--;
+        COPY_VAL(buf, 1, val, num_bytes);
+        *buf = bit_offset ? (val << (8-bit_offset)) : val;
+    } else {		/* Big endian */
+        buf += num_bytes - 1;
+        if (bit_offset) {
+            *buf-- = val << (8-bit_offset);
+            num_bytes--;
+            val >>= bit_offset;
+        }
+        COPY_VAL(buf, -1, val, num_bytes);
+    }
+}
+
 /* calculate a - *cp (carry)  (store result in b), *cp is updated! */
 #define SUBc(a, cp, b) do { \
    byte __x = (a); \
@@ -621,177 +608,150 @@ erts_bs_get_binary_all_2(Process *p, ErlBinMatchBuffer* mb)
    (*cp) = (__y > __x); \
    *(b) = ~__y; \
  } while(0)
-  
-static int
-fmt_int(byte *buf, Uint sz, Eterm val, Uint size, Uint flags)
+
+static void
+fmt_big(byte *buf, Uint num_bytes, Eterm val, Uint num_bits, Uint flags)
 {
     unsigned long offs;
+    int sign;
+    Uint ds;
+    ErtsDigit* dp;
+    int n;
 
-    offs = BIT_OFFSET(size);
-    if (is_small(val)) {
-	Sint v = signed_val(val);
-
-	ASSERT(size != 0);	  /* Tested by caller */
-	if (flags & BSF_LITTLE) { /* Little endian */
-	    sz--;
-	    COPY_VAL(buf,1,v,sz);
-	    *buf = offs ? ((v << (8-offs)) & 0xff) : (v & 0xff);
-	} else {		/* Big endian */
-	    buf += (sz - 1);
-	    if (offs) {
-		*buf-- = (v << (8-offs)) & 0xff;
-		sz--;
-		v >>= offs;
-	    }
-	    COPY_VAL(buf,-1,v,sz);
-	}
-    } else if (is_big(val)) {
-	int sign   = big_sign(val);
-	Uint ds  = big_size(val)*sizeof(ErtsDigit);  /* number of digits bytes */
-	ErtsDigit* dp = big_v(val);
-	int n = MIN(sz,ds);
+    ASSERT(is_big(val));
 
-	if (size == 0) {
-	    return 0;
-	}
-	if (flags & BSF_LITTLE) {
-	    sz -= n;                       /* pad with this amount */
-	    if (sign) {
-		int c = 1;
-		while(n >= sizeof(ErtsDigit)) {
-		    ErtsDigit d = *dp++;
-		    int i;
-		    for(i = 0; i < sizeof(ErtsDigit); ++i) {
-			SUBc((d&0xff), &c, buf);
-			buf++;
-			d >>= 8;
-		    }
-		    n -= sizeof(ErtsDigit);
-		}
-		if (n) {
-		    ErtsDigit d = *dp;
-		    do {
-			SUBc((d&0xff), &c, buf);
-			buf++;
-			d >>= 8;
-		    } while (--n > 0);
-		}
-		/* pad */
-		while(sz--) {
-		    SUBc(0, &c, buf);
-		    buf++;
-		}
-	    }
-	    else {
-		while(n >= sizeof(ErtsDigit)) {
-		    ErtsDigit d = *dp++;
-		    int i;
-		    for(i = 0; i < sizeof(ErtsDigit); ++i) {
-			*buf++ = (d & 0xff);
-			d >>= 8;
-		    }
-		    n -= sizeof(ErtsDigit);
-		}
-		if (n) {
-		    ErtsDigit d = *dp;
-		    do {
-			*buf++ = (d & 0xff);
-			d >>= 8;
-		    } while (--n > 0);
-		}
-		/* pad */
-		while(sz) {
-		    *buf++ = 0;
-		    sz--;
-		}
-	    }
-	    /* adjust MSB!!! */
-	    if (offs) {
-		buf--;
-		*buf <<= (8 - offs);
-	    }
-	}
-	else {   /* BIG ENDIAN */
-	    ErtsDigit acc = 0;
-	    ErtsDigit d;
-
-	    buf += (sz - 1);              /* end of buffer */
-	    sz -= n;                      /* pad with this amount */
-	    offs = offs ? (8-offs) : 0;   /* shift offset */
-
-	    if (sign) { /* SIGNED */
-		int c = 1;
-
-		while (n >= sizeof(ErtsDigit)) {
-		    int i;
-
-		    d = *dp++;
-		    acc |= d << offs;
-		    SUBc((acc&0xff), &c, buf);
-		    buf--;
-		    acc = d >> (8-offs);
-		    for (i = 0; i < sizeof(ErtsDigit)-1; ++i) {
-			SUBc((acc&0xff), &c, buf);
-			buf--;
-			acc >>= 8;
-		    }
-		    n -= sizeof(ErtsDigit);
-		}
-		if (n) {
-		    acc |= ((ErtsDigit)*dp << offs);
-		    do {
-			SUBc((acc & 0xff), &c, buf);
-			buf--;
-			acc >>= 8;
-		    } while (--n > 0);
-		}
-		/* pad */
-		while(sz--) {
-		    SUBc((acc & 0xff), &c, buf);
-		    buf--;
-		    acc >>= 8;
-		}
-	    }
-	    else { /* UNSIGNED */
-		while (n >= sizeof(ErtsDigit)) {
-		    int i;
-
-		    d = *dp++;
-		    acc |= d << offs;
-		    *buf-- = acc;
-		    acc = d >> (8-offs);
-		    for (i = 0; i < sizeof(ErtsDigit)-1; ++i) {
-			*buf-- = acc;
-			acc >>= 8;
-		    }
-		    n -= sizeof(ErtsDigit);
-		}
-		if (n) {
-		    acc |= ((ErtsDigit)*dp << offs);
-		    do {
-			*buf-- = acc & 0xff;
-			acc >>= 8;
-		    } while (--n > 0);
-		}
-		while (sz--) {
-		    *buf-- = acc & 0xff;
-		    acc >>= 8;
-		}
-	    }
-	}
-    } else {			/* Neither small nor big */
-	return -1;
+    if (num_bits == 0) {
+        return;
     }
-    return 0;
-}
 
-static void
-ERTS_INLINE need_byte_buf(ERL_BITS_PROTO_1(Uint need))
-{
-    if (byte_buf_len < need) {
-	erts_atomic_add_nob(&bits_bufs_size, need - byte_buf_len);
-	byte_buf_len = need;
-	byte_buf = erts_realloc(ERTS_ALC_T_BITS_BUF, byte_buf, byte_buf_len);
+    sign = big_sign(val);
+    ds = big_size(val)*sizeof(ErtsDigit); /* number of digits bytes */
+    dp = big_v(val);
+    n = MIN(num_bytes, ds);
+
+    offs = BIT_OFFSET(num_bits);
+    if (flags & BSF_LITTLE) {
+        num_bytes -= n;         /* pad with this amount */
+        if (sign) {             /* negative */
+            int c = 1;
+            while (n >= sizeof(ErtsDigit)) {
+                ErtsDigit d = *dp++;
+                int i;
+                for (i = 0; i < sizeof(ErtsDigit); i++) {
+                    SUBc(d & 0xff, &c, buf);
+                    buf++;
+                    d >>= 8;
+                }
+                n -= sizeof(ErtsDigit);
+            }
+            if (n) {
+                ErtsDigit d = *dp;
+                do {
+                    SUBc(d & 0xff, &c, buf);
+                    buf++;
+                    d >>= 8;
+                } while (--n > 0);
+            }
+            /* pad */
+            while (num_bytes--) {
+                SUBc(0, &c, buf);
+                buf++;
+            }
+        } else {                /* positive */
+            while (n >= sizeof(ErtsDigit)) {
+                ErtsDigit d = *dp++;
+                int i;
+                for(i = 0; i < sizeof(ErtsDigit); i++) {
+                    *buf++ = d;
+                    d >>= 8;
+                }
+                n -= sizeof(ErtsDigit);
+            }
+            if (n) {
+                ErtsDigit d = *dp;
+                do {
+                    *buf++ = d;
+                    d >>= 8;
+                } while (--n > 0);
+            }
+            /* pad */
+            while (num_bytes) {
+                *buf++ = 0;
+                num_bytes--;
+            }
+        }
+
+        /* adjust MSB */
+        if (offs) {
+            buf--;
+            *buf <<= (8 - offs);
+        }
+    } else {   /* BIG ENDIAN */
+        ErtsDigit acc = 0;
+        ErtsDigit d;
+
+        buf += num_bytes - 1;       /* end of buffer */
+        num_bytes -= n;             /* pad with this amount */
+        offs = offs ? (8-offs) : 0; /* shift offset */
+
+        if (sign) {             /* negative bignum */
+            int c = 1;
+
+            while (n >= sizeof(ErtsDigit)) {
+                int i;
+
+                d = *dp++;
+                acc |= d << offs;
+                SUBc(acc & 0xff, &c, buf);
+                buf--;
+                acc = d >> (8-offs);
+                for (i = 0; i < sizeof(ErtsDigit)-1; i++) {
+                    SUBc(acc & 0xff, &c, buf);
+                    buf--;
+                    acc >>= 8;
+                }
+                n -= sizeof(ErtsDigit);
+            }
+            if (n) {
+                acc |= ((ErtsDigit)*dp << offs);
+                do {
+                    SUBc(acc & 0xff, &c, buf);
+                    buf--;
+                    acc >>= 8;
+                } while (--n > 0);
+            }
+            /* pad */
+            while (num_bytes--) {
+                SUBc(acc & 0xff, &c, buf);
+                buf--;
+                acc >>= 8;
+            }
+        } else {                /* positive bignum */
+            while (n >= sizeof(ErtsDigit)) {
+                int i;
+
+                d = *dp++;
+                acc |= d << offs;
+                *buf-- = acc;
+                acc = d >> (8-offs);
+                for (i = 0; i < sizeof(ErtsDigit)-1; i++) {
+                    *buf-- = acc;
+                    acc >>= 8;
+                }
+                n -= sizeof(ErtsDigit);
+            }
+            if (n) {
+                acc |= (*dp << offs);
+                do {
+                    *buf-- = acc;
+                    acc >>= 8;
+                } while (--n > 0);
+            }
+            while (num_bytes--) {
+                *buf-- = acc;
+                acc >>= 8;
+            }
+        }
     }
 }
 
@@ -812,7 +772,7 @@ erts_new_bs_put_integer(ERL_BITS_PROTO_3(Eterm arg, Uint num_bits, unsigned flag
 	} else if (bit_offset + num_bits <= 8) {
 	    /*
 	     * All bits are in the same byte.
-	     */ 
+	     */
 	    iptr = erts_current_bin+BYTE_OFFSET(bin_offset);
 	    b = *iptr & (0xff << rbits);
 	    b |= (signed_val(arg) & ((1 << num_bits)-1)) << (8-bit_offset-num_bits);
@@ -820,17 +780,72 @@ erts_new_bs_put_integer(ERL_BITS_PROTO_3(Eterm arg, Uint num_bits, unsigned flag
 	} else if (bit_offset == 0) {
 	    /*
 	     * More than one bit, starting at a byte boundary.
-	     * That will be quite efficiently handled by fmt_int().
-	     *
-	     * (We know that fmt_int() can't fail here.)
 	     */
-	    (void) fmt_int(erts_current_bin+BYTE_OFFSET(bin_offset),
-			   NBYTES(num_bits), arg, num_bits, flags);
+            iptr = erts_current_bin + BYTE_OFFSET(bin_offset);
+            fmt_small(iptr, NBYTES(num_bits), arg, num_bits, flags);
 	} else if (flags & BSF_LITTLE) {
-	    /*
-	     * Can't handle unaligned little-endian in a simple way.
-	     */
-	    goto unaligned;
+            /*
+             * Little endian small in more than one byte, not
+             * aligned on a byte boundary.
+             */
+            Sint val = signed_val(arg);
+            Uint rshift = bit_offset;
+            Uint lshift = rbits;
+            Uint lmask = MAKE_MASK(8 - bit_offset);
+            Uint count = (num_bits - (8 - bit_offset)) / 8;
+            Uint bits, bits1;
+
+            iptr = erts_current_bin+BYTE_OFFSET(bin_offset);
+
+            if (BIT_OFFSET(num_bits) == 0) {
+                bits = val;
+                bits1 = bits >> rshift;
+                *iptr = MASK_BITS(bits1, *iptr, lmask);
+                iptr++;
+                val >>= 8;
+
+                while (count--) {
+                    bits1 = bits << lshift;
+                    bits = val & 0xff;
+                    *iptr++ = bits1 | (bits >> rshift);
+                    val >>= 8;
+                }
+
+                *iptr = bits << lshift;
+            } else {
+                Sint num_bytes = NBYTES(num_bits) - 1;
+                Uint deoffs = BIT_OFFSET(bit_offset + num_bits);
+
+                if (num_bytes-- > 0) {
+                    bits = val;
+                } else {
+                    bits = (val << (8 - BIT_OFFSET(num_bits)));
+                }
+                bits1 = bits >> rshift;
+                *iptr = MASK_BITS(bits1, *iptr, lmask);
+                iptr++;
+                val >>= 8;
+
+                while (count--) {
+                    bits1 = bits << lshift;
+                    if (num_bytes-- > 0) {
+                        bits = val & 0xff;
+                    } else {
+                        bits = (val << (8 - BIT_OFFSET(num_bits))) & 0xff;
+                    }
+                    *iptr++ = bits1 | (bits >> rshift);
+                    val >>= 8;
+                }
+
+                if (deoffs) {
+                    bits1 = bits << lshift;
+                    if (rshift < deoffs) {
+                        bits = (val << (8 - BIT_OFFSET(num_bits))) & 0xff;
+                        bits1 |= bits >> rshift;
+                    }
+                    *iptr = bits1;
+                }
+            }
 	} else {		/* Big endian */
 	    /*
 	     * Big-endian, more than one byte, but not aligned on a byte boundary.
@@ -857,34 +872,61 @@ erts_new_bs_put_integer(ERL_BITS_PROTO_3(Eterm arg, Uint num_bits, unsigned flag
 	    }
 	    *iptr++ = b;
 
-	    /* fmt_int() can't fail here. */
-	    (void) fmt_int(iptr, NBYTES(num_bits-rbits), arg,
-			   num_bits-rbits, flags);
+            fmt_small(iptr, NBYTES(num_bits-rbits), arg, num_bits-rbits, flags);
 	}
-    } else if (bit_offset == 0) {
+    } else if (is_big(arg) && bit_offset == 0) {
 	/*
 	 * Big number, aligned on a byte boundary. We can format the
 	 * integer directly into the binary.
 	 */
-	if (fmt_int(erts_current_bin+BYTE_OFFSET(bin_offset),
-		    NBYTES(num_bits), arg, num_bits, flags) < 0) {
-	    return 0;
-	}
+	fmt_big(erts_current_bin+BYTE_OFFSET(bin_offset),
+                NBYTES(num_bits), arg, num_bits, flags);
+    } else if (is_big(arg)) {
+        /*
+         * Big number, not aligned on a byte boundary.
+         */
+        Uint rshift = bit_offset;
+        Uint lshift = 8 - bit_offset;
+        Uint deoffs = BIT_OFFSET(bit_offset + num_bits);
+        Uint lmask = MAKE_MASK(8 - bit_offset);
+        Uint rmask = (deoffs) ? (MAKE_MASK(deoffs)<<(8-deoffs)) : 0;
+        Uint count = (num_bits - (8 - bit_offset)) / 8;
+        Uint bits, bits1;
+
+        /*
+         * Format it byte-aligned using the binary itself as a
+         * temporary buffer.
+         */
+        iptr = erts_current_bin + BYTE_OFFSET(bin_offset);
+        b = *iptr;
+        fmt_big(iptr, NBYTES(num_bits), arg, num_bits, flags);
+
+        /*
+         * Now restore the overwritten bits of the first byte and
+         * shift everything to the right.
+         */
+        bits = *iptr;
+        bits1 = bits >> rshift;
+        *iptr = MASK_BITS(bits1, b, lmask);
+        iptr++;
+
+        while (count--) {
+            bits1 = bits << lshift;
+            bits = *iptr;
+            *iptr++ = bits1 | (bits >> rshift);
+        }
+
+        if (rmask) {
+            bits1 = bits << lshift;
+            if ((rmask << rshift) & 0xff) {
+                bits = *iptr;
+                bits1 |= (bits >> rshift);
+            }
+            *iptr = MASK_BITS(bits1, *iptr, rmask);
+        }
     } else {
-    unaligned:
-	/*
-	 * Big number or small little-endian number, not byte-aligned,
-	 * or not a number at all.
-	 *
-	 * We must format the number into a temporary buffer, and then
-	 * copy that into the binary.
-	 */
-	need_byte_buf(ERL_BITS_ARGS_1(NBYTES(num_bits)));
-	iptr = byte_buf;
-	if (fmt_int(iptr, NBYTES(num_bits), arg, num_bits, flags) < 0) {
-	    return 0;
-	}
-	erts_copy_bits(iptr, 0, 1, erts_current_bin, bin_offset, 1, num_bits);
+        /* Not an integer. */
+        return 0;
     }
     erts_bin_offset = bin_offset + num_bits;
     return 1;
diff --git a/erts/emulator/beam/erl_bits.h b/erts/emulator/beam/erl_bits.h
index 631f6679ae..7c3623f955 100644
--- a/erts/emulator/beam/erl_bits.h
+++ b/erts/emulator/beam/erl_bits.h
@@ -51,11 +51,6 @@ typedef struct erl_bin_match_buffer {
 
 struct erl_bits_state {
     /*
-     * Used for building binaries.
-     */
-    byte *byte_buf_;
-    Uint byte_buf_len_;
-    /*
      * Used for building binaries using the new instruction set.
      */
     byte* erts_current_bin_;	/* Pointer to beginning of current binary. */
@@ -131,11 +126,6 @@ typedef struct erl_bin_match_struct{
     }											    \
   }  while (0)
 
-void erts_init_bits(void);	/* Initialization once. */
-void erts_bits_init_state(ERL_BITS_PROTO_0);
-void erts_bits_destroy_state(ERL_BITS_PROTO_0);
-
-
 /*
  * NBYTES(x) returns the number of bytes needed to store x bits.
  */
@@ -176,7 +166,6 @@ int erts_new_bs_put_binary_all(Process *c_p, Eterm Bin, Uint unit);
 int erts_new_bs_put_float(Process *c_p, Eterm Float, Uint num_bits, int flags);
 void erts_new_bs_put_string(ERL_BITS_PROTO_2(byte* iptr, Uint num_bytes));
 
-Uint erts_bits_bufs_size(void);
 Uint32 erts_bs_get_unaligned_uint32(ErlBinMatchBuffer* mb);
 Eterm erts_bs_get_utf8(ErlBinMatchBuffer* mb);
 Eterm erts_bs_get_utf16(ErlBinMatchBuffer* mb, Uint flags);
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 7df1e6a841..5f42548ca2 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -343,7 +343,6 @@ erl_init(int ncpu,
     BIN_VH_MIN_SIZE = erts_next_heap_size(BIN_VH_MIN_SIZE, 0);
 
     erts_init_trace();
-    erts_init_bits();
     erts_code_ix_init();
     erts_init_fun_table();
     init_atom_table();
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 7a89df49e0..92cda704b9 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -5810,7 +5810,6 @@ init_scheduler_data(ErtsSchedulerData* esdp, int num,
                     Uint64 time_stamp)
 {
     esdp->timer_wheel = NULL;
-    erts_bits_init_state(&esdp->erl_bits_state);
     esdp->match_pseudo_process = NULL;
     esdp->free_process = NULL;
     esdp->x_reg_array =
diff --git a/erts/emulator/valgrind/suppress.patched.3.6.0 b/erts/emulator/valgrind/suppress.patched.3.6.0
index d3489e5b27..ea0187dd91 100644
--- a/erts/emulator/valgrind/suppress.patched.3.6.0
+++ b/erts/emulator/valgrind/suppress.patched.3.6.0
@@ -279,21 +279,6 @@ obj:*/ssleay.*
    fun:RC4
 }
 
-{
-erts_bits_init_state; Why is this needed?
-Memcheck:Leak
-PossiblyLost
-fun:malloc
-fun:erts_sys_alloc
-...
-fun:erts_alloc
-fun:erts_bits_init_state
-fun:erts_init_scheduling
-fun:erl_init
-fun:erl_start
-fun:main
-}
-
 {
 Prebuilt constant terms in os_info_init
 Memcheck:Leak
-- 
2.35.3

Places

File 7221-Eliminate-the-temporary-buffer-for-binary-constructi.patch of Package erlang (Revision b4f72044e1af8cfe32130ab849a401a1)

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