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systemd/SOURCES/0683-boot-Introduce-log_wait.patch

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From e2493416cd85725a1198a391f9b1f93e1e9db88e Mon Sep 17 00:00:00 2001
From: Jan Janssen <medhefgo@web.de>
Date: Sun, 5 Jun 2022 13:19:21 +0200
Subject: [PATCH] boot: Introduce log_wait
Instead of stalling for every log message as it appears we now wait for
several messages at strategic locations.
(cherry picked from commit 6ac54809deefddccc7861b5a2cfa4d766cf1aa3b)
Related: RHEL-16952
---
src/boot/efi/boot.c | 18 +++++++++++++-----
src/boot/efi/console.c | 1 +
src/boot/efi/graphics.c | 7 ++++---
src/boot/efi/linux.c | 1 +
src/boot/efi/linux_x86.c | 1 +
src/boot/efi/log.c | 13 +++++++++++--
src/boot/efi/log.h | 1 +
src/boot/efi/stub.c | 19 +++++++++++++------
src/boot/efi/util.c | 1 +
9 files changed, 46 insertions(+), 16 deletions(-)
diff --git a/src/boot/efi/boot.c b/src/boot/efi/boot.c
index 1e7b7a0fa7..1e94aa57b1 100644
--- a/src/boot/efi/boot.c
+++ b/src/boot/efi/boot.c
@@ -2612,7 +2612,7 @@ static EFI_STATUS discover_root_dir(EFI_LOADED_IMAGE_PROTOCOL *loaded_image, EFI
return open_volume(loaded_image->DeviceHandle, ret_dir);
}
-EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
+static EFI_STATUS real_main(EFI_HANDLE image) {
EFI_LOADED_IMAGE_PROTOCOL *loaded_image;
_cleanup_(file_closep) EFI_FILE *root_dir = NULL;
_cleanup_(config_free) Config config = {};
@@ -2621,11 +2621,7 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
uint64_t init_usec;
bool menu = false;
- InitializeLib(image, sys_table);
init_usec = time_usec();
- debug_hook(L"systemd-boot");
- /* Uncomment the next line if you need to wait for debugger. */
- // debug_break();
err = BS->OpenProtocol(image,
&LoadedImageProtocol,
@@ -2714,3 +2710,15 @@ out:
BS->CloseProtocol(image, &LoadedImageProtocol, image, NULL);
return err;
}
+
+EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
+ InitializeLib(image, sys_table);
+
+ debug_hook(L"systemd-boot");
+ /* Uncomment the next line if you need to wait for debugger. */
+ // debug_break();
+
+ EFI_STATUS err = real_main(image);
+ log_wait();
+ return err;
+}
diff --git a/src/boot/efi/console.c b/src/boot/efi/console.c
index b876ff2bd7..001b82854b 100644
--- a/src/boot/efi/console.c
+++ b/src/boot/efi/console.c
@@ -188,6 +188,7 @@ static EFI_STATUS change_mode(int64_t mode) {
mode = CLAMP(mode, CONSOLE_MODE_RANGE_MIN, CONSOLE_MODE_RANGE_MAX);
old_mode = MAX(CONSOLE_MODE_RANGE_MIN, ST->ConOut->Mode->Mode);
+ log_wait();
err = ST->ConOut->SetMode(ST->ConOut, mode);
if (err == EFI_SUCCESS)
return EFI_SUCCESS;
diff --git a/src/boot/efi/graphics.c b/src/boot/efi/graphics.c
index dc646bce1f..350d1bc434 100644
--- a/src/boot/efi/graphics.c
+++ b/src/boot/efi/graphics.c
@@ -25,16 +25,17 @@ EFI_STATUS graphics_mode(bool on) {
return err == EFI_NOT_FOUND ? EFI_SUCCESS : err;
/* check current mode */
- err =ConsoleControl->GetMode(ConsoleControl, &current, &uga_exists, &stdin_locked);
+ err = ConsoleControl->GetMode(ConsoleControl, &current, &uga_exists, &stdin_locked);
if (err != EFI_SUCCESS)
return err;
/* do not touch the mode */
- new = on ? EfiConsoleControlScreenGraphics : EfiConsoleControlScreenText;
+ new = on ? EfiConsoleControlScreenGraphics : EfiConsoleControlScreenText;
if (new == current)
return EFI_SUCCESS;
- err =ConsoleControl->SetMode(ConsoleControl, new);
+ log_wait();
+ err = ConsoleControl->SetMode(ConsoleControl, new);
/* some firmware enables the cursor when switching modes */
ST->ConOut->EnableCursor(ST->ConOut, false);
diff --git a/src/boot/efi/linux.c b/src/boot/efi/linux.c
index 2ae68ec295..727e507101 100644
--- a/src/boot/efi/linux.c
+++ b/src/boot/efi/linux.c
@@ -142,6 +142,7 @@ EFI_STATUS linux_exec(
if (err != EFI_SUCCESS)
return log_error_status(err, "Error registering initrd: %m");
+ log_wait();
err = BS->StartImage(kernel_image, NULL, NULL);
/* Try calling the kernel compat entry point if one exists. */
diff --git a/src/boot/efi/linux_x86.c b/src/boot/efi/linux_x86.c
index cbd92201b6..eaae988d97 100644
--- a/src/boot/efi/linux_x86.c
+++ b/src/boot/efi/linux_x86.c
@@ -209,6 +209,7 @@ EFI_STATUS linux_exec_efi_handover(
boot_params->hdr.ramdisk_size = initrd_length;
boot_params->ext_ramdisk_size = ((uint64_t) initrd_length) >> 32;
+ log_wait();
linux_efi_handover(parent, (uintptr_t) linux_buffer, boot_params);
return EFI_LOAD_ERROR;
}
diff --git a/src/boot/efi/log.c b/src/boot/efi/log.c
index 38e7c5a8a8..b1a613e4e5 100644
--- a/src/boot/efi/log.c
+++ b/src/boot/efi/log.c
@@ -5,6 +5,8 @@
#include "log.h"
+static unsigned log_count = 0;
+
void efi_assert(const char *expr, const char *file, unsigned line, const char *function) {
log_error("systemd-boot assertion '%s' failed at %s:%u@%s. Halting.", expr, file, line, function);
for (;;)
@@ -28,7 +30,14 @@ EFI_STATUS log_internal(EFI_STATUS status, const char *format, ...) {
ST->ConOut->OutputString(ST->ConOut, (char16_t *) u"\r\n");
ST->ConOut->SetAttribute(ST->ConOut, attr);
- /* Give the user a chance to see the message. */
- BS->Stall(3 * 1000 * 1000);
+ log_count++;
return status;
}
+
+void log_wait(void) {
+ if (log_count == 0)
+ return;
+
+ BS->Stall(MIN(4u, log_count) * 2500 * 1000);
+ log_count = 0;
+}
diff --git a/src/boot/efi/log.h b/src/boot/efi/log.h
index c6e8d626ce..f24034fd78 100644
--- a/src/boot/efi/log.h
+++ b/src/boot/efi/log.h
@@ -3,6 +3,7 @@
#include "efi-string.h"
+void log_wait(void);
_gnu_printf_(2, 3) EFI_STATUS log_internal(EFI_STATUS status, const char *format, ...);
#define log_error_status(status, ...) log_internal(status, __VA_ARGS__)
#define log_error(...) log_internal(EFI_INVALID_PARAMETER, __VA_ARGS__)
diff --git a/src/boot/efi/stub.c b/src/boot/efi/stub.c
index f9c023e11c..f71f041a2f 100644
--- a/src/boot/efi/stub.c
+++ b/src/boot/efi/stub.c
@@ -180,7 +180,7 @@ static bool use_load_options(
return true;
}
-EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
+static EFI_STATUS real_main(EFI_HANDLE image) {
_cleanup_free_ void *credential_initrd = NULL, *global_credential_initrd = NULL, *sysext_initrd = NULL, *pcrsig_initrd = NULL, *pcrpkey_initrd = NULL;
size_t credential_initrd_size = 0, global_credential_initrd_size = 0, sysext_initrd_size = 0, pcrsig_initrd_size = 0, pcrpkey_initrd_size = 0;
size_t linux_size, initrd_size, dt_size;
@@ -194,11 +194,6 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
uint64_t loader_features = 0;
EFI_STATUS err;
- InitializeLib(image, sys_table);
- debug_hook(L"systemd-stub");
- /* Uncomment the next line if you need to wait for debugger. */
- // debug_break();
-
err = BS->OpenProtocol(
image,
&LoadedImageProtocol,
@@ -426,3 +421,15 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
graphics_mode(false);
return err;
}
+
+EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
+ InitializeLib(image, sys_table);
+
+ debug_hook(L"systemd-stub");
+ /* Uncomment the next line if you need to wait for debugger. */
+ // debug_break();
+
+ EFI_STATUS err = real_main(image);
+ log_wait();
+ return err;
+}
diff --git a/src/boot/efi/util.c b/src/boot/efi/util.c
index 320bddec1b..aa7b1fa1a2 100644
--- a/src/boot/efi/util.c
+++ b/src/boot/efi/util.c
@@ -333,6 +333,7 @@ void print_at(size_t x, size_t y, size_t attr, const char16_t *str) {
}
void clear_screen(size_t attr) {
+ log_wait();
ST->ConOut->SetAttribute(ST->ConOut, attr);
ST->ConOut->ClearScreen(ST->ConOut);
}
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